Interstate 45

Interstate 45 (I-45) is an Interstate Highway located entirely within the U.S. state of Texas. While most Interstate routes ending in "5" are cross-country north-south routes, I-45 is comparatively short, with the entire route located in Texas. It connects the cities of Dallas and Houston, continuing southeast from Houston to Galveston over the Galveston Causeway to the Gulf of Mexico.

Interstate 45
I-45 highlighted in red
Route information
Maintained by TxDOT
Length284.913 mi[1] (458.523 km)
Existed1971–present
Major junctions
South end SH 87 in Galveston
 
North end I-30 / I-345 / US 75 in Dallas
Location
CountiesGalveston, Harris, Montgomery, Walker, Madison, Leon, Freestone, Navarro, Ellis, Dallas
Highway system
SH 44 SH 45

I-45 replaced US 75 over its entire length, although portions of US 75 remained parallel to I-45 until its elimination south of downtown Dallas in 1987. At the south end of I-45, State Highway 87 (formerly part of US 75) continues into downtown Galveston. The north end is at Interstate 30 in downtown Dallas, where US 75 used the Good-Latimer Expressway. A short continuation, known by traffic reporters as the I-45 overhead,[2] signed as part of US 75, and officially Interstate 345, continues north to the merge with the current end of US 75. Traffic can use Spur 366 (better known locally as the Woodall Rodgers Freeway) to connect to Interstate 35E at the north end of I-345.

The portion of I-45 between downtown Houston and Galveston is known to Houston residents as the Gulf Freeway. The short elevated section of I-45 which forms the southern boundary of downtown Houston is known as the Pierce Elevated, after the surface street next to which the freeway runs, while north of Interstate 10 it is known as the North Freeway. I-45 and I-345 in the Dallas area, north of the interchanges with Interstate 20 and State Highway 310 (old US 75), is the Julius Schepps Freeway. The Gulf Freeway and North Freeway both include reversible high-occupancy vehicle lanes for buses and other high-occupancy vehicles to and from downtown Houston.

Route description

In addition to the official control cities of Galveston, Houston, and Dallas,[3] I-45 serves a number of other communities, including La Marque, League City, Spring, The Woodlands, Conroe, Willis, Huntsville, Madisonville, Centerville, Buffalo, Fairfield, Corsicana, and Ennis.

U.S. Highway 190 joins I-45 for 26 miles (42 km) from Huntsville, Texas to Madisonville, Texas. U.S. Highway 287 joins I-45 for 18 miles (29 km) from Corsicana, Texas to Ennis, Texas. US 287 signs are only posted (with I-45) from the northern end of Business Loop 45 in Corsicana to the Ellis County line.

Hurricane Rita evacuation from the Louetta Road (exit 68) overpass (2005)

Interstate 45 gained notoriety during Hurricane Rita in 2005. Thousands of Houston area evacuees jammed the roadway trying to leave. As a result, the freeway became a parking lot. Gas stations ran dry and hundreds of people's cars simply ran empty, their occupants having to spend the night along the shoulder. Four-hour drives suddenly became 24-hour drives. Even though the Texas Department of Transportation started contraflow lane reversal at FM 1488, it did not alleviate the traffic jam deep into the city, as that starting point was even north of The Woodlands, which is close to Conroe, the northern terminus of the greater Houston area.

At just 284.913 miles (458.523 km), I-45 is the shortest of the primary interstates (ending in 0 or 5), and the only primary interstate to be entirely inside of one state.

Gulf Freeway

The stretch of I-45 connecting Galveston with Houston is known as the Gulf Freeway. It was the first freeway built in Texas—opened in stages beginning on October 1, 1948, up to a full completion to Galveston in 1952, as part of U.S. Highway 75. At the north (Houston) end, it connects to the North Freeway via the short Pierce Elevated, completed in 1967.[4] The section north of the curve near Monroe Road/State Highway 3 in southeastern Houston was built on the right-of-way of the former Galveston-Houston Electric Railway, which entered downtown on Pierce Street.[5][6]

  • from January 1974 until December 1995, the speed limit was 55 mph for the entire route of the Gulf Freeway Houston-Galveston

After several interchanges, I-45 crosses the Galveston Causeway and passes Tiki Island. Old U.S. Highway 75 south of this junction was upgraded on the spot.[7]

The Gulf Freeway generally parallels State Highway 3 (old US 75) about 1 mile (1.6 km) to the west, bypassing La Marque, Dickinson and South Houston. It includes interchanges with several other freeways: the Emmett F. Lowry Expressway (Farm to Market Road 1764), NASA Road 1 Bypass and the Sam Houston Tollway, meeting the north end of State Highway 3 in southeastern Houston. (This part of SH 3 — on Winkler Drive and Monroe Road — is not part of old US 75.) A center reversible HOV lane begins just south of the Sam Houston Tollway.

I-45 and I-10/US 90 next to Downtown Houston

In Houston, I-45 meets Interstate Highway 610 and State Highway 35 at a complicated interchange.[8] At the merge with Spur 5, a short freeway spur to the University of Houston, elevated collector/distributor roads (also part of Spur 5) begin. The C/D roads and the HOV lane end at Emancipation Avenue, the original end of the Gulf Freeway. Just past Emancipation Avenue is an interchange with Interstate 69/U.S. Highway 59 (Eastex Freeway and Southwest Freeway) and State Highway 288 (South Freeway), after which I-45 technically becomes the North Freeway[9] as it runs along the northwest half of the block between Pierce Street and Gray Street as the Pierce Elevated.

The reversible high-occupancy vehicle lane begins in downtown Houston at the intersection of St. Joseph Parkway and Emancipation Avenue, with easy access inbound to St. Joseph Parkway and outbound from Pierce Street. It runs down the median of the Gulf Freeway, mostly at the same level as the main lanes. Ramps are provided for access to and from the following roads:

  • Eastwood Transit Center — full access
  • Interstate Highway 610 north frontage road — full access
  • Monroe Road and Monroe Park & Ride — full access
  • Fuqua Park & Ride and South Point Park & Ride — full access
  • Frontage roads north of Dixie Farm Road (Farm to Market Road 1959) - towards downtown, with a ramp stub for continuation

North Freeway

The Interstate 45 North Freeway HOV begins in downtown Houston near the University of Houston–Downtown, with easy access inbound on Milam Street and outbound on Travis Street. Ramps and entrances are provided for access from the following roads. All are fully accessible.

  • Interstate 10/U.S. Highway 90 westbound exit and entrance onlys
  • Quitman Street
  • Airline Drive (to Crosstimbers Road)
  • N. Shepherd (to N. Shepherd Park & Ride)
  • Farm to Market Road 525 (Aldine-Bender Rd)
  • Kuykendahl Park & Ride
  • Farm to Market Road 1960 (to Spring Park & Ride)

The HOV ends approximately one mile north of the Cypress Creek Parkway (FM1960) exit and becomes a diamond white line at grade separated HOV north to just before exit 84 Loop 336 on the south side of Conroe. This provides HOV access 24 hours a day 7 days a week with one lane on the northbound side and one lane on the southbound side with periodic dotted lines for access at major exits.

Julius Schepps Freeway

The stretch of I-45 along the Julius Schepps Freeway in Dallas, from the Trinity River to Downtown Dallas up to and including the I-345, is elevated above the surrounding areas for most of its length. As such, when ice storms hit the Dallas area (usually on average 1-2 times per year), the freeway is shut down, and traffic is diverted to State Highway 310 and U.S. Highway 175 which parallel I-45.

Lane configuration

From south to north, the following one-way lane counts are for mainlanes only:

  • 3 lanes between Galveston and NASA Road 1
  • 5 lanes between NASA Road 1 and Beltway 8 (south)
  • 4 lanes between Beltway 8 (south) and I-69/US 59
  • 3 lanes between I-69/US 59 and McKinney Street
  • 4 lanes between McKinney Street and Beltway 8 (north)
  • 5 lanes between Beltway 8 (north) and Parramatta Lane
  • 4 lanes between Parramatta Lane and Spring Crossing Drive
  • 5 lanes between Spring Crossing Drive and Lake Woodlands Drive
  • 4 lanes between Lake Woodlands Drive and FM 3083 (exit 91)
  • 3 lanes between FM 3083 (exit 91) and the Walker County line (near milepost 100)
  • 2 lanes between Walker County line and exit 213
  • 3 lanes between exit 213 and US 175
  • 5 lanes between US 175 and I-30

History

In the initial assignment of state highways in 1917, Dallas-Fort Worth and Houston were connected by a branch of State Highway 2 (the Meridian Highway), which ran via Waco and Bryan and continued on to Galveston. The more direct route followed by I-45 was not initially part of the system between Richland and Huntsville;[10][11] this cutoff was added by 1919 as State Highway 32,[12] and U.S. Highway 75 was assigned to the alignment in 1926.[13] Prior to the coming of the Interstate Highway System in the late 1950s, the only improvements to US 75 in Texas beyond building a two-lane paved roadway were in the Houston and Dallas areas.[14] However, the highways in and near these cities included some of the first freeways in the state: the Gulf Freeway (Houston) and the Central Expressway (Dallas).

Gulf Freeway (Houston to Galveston)

The Galveston-Houston Electric Railway began operating an interurban between those cities on December 5, 1911, and last ran on October 31, 1936, though the Houston Electric Company, operator of Houston's city transit system, continued to run trains on the portion between downtown and Park Place. A proposal for a "super-highway" between the cities was first made in 1930, and Houston Mayor Oscar Holcombe began to work towards it later that decade. He announced an agreement with the Houston Electric Company on April 12, 1940, through which the company could convert its four remaining lines to buses, in exchange for the right-of-way used by the Park Place line. This line was last used on June 9, 1940, the last day of streetcar service in Houston;[15] the replacement is still operated by METRO as the 40 along Telephone Road.

Before the new highway was built, U.S. Highway 75 followed Galveston Road (now mostly State Highway 3), Broadway Street, and Harrisburg Boulevard into downtown Houston. State Highway 225 carried traffic from La Porte along La Porte Road to US 75 in Harrisburg, and State Highway 35 connected Alvin with downtown Houston along Telephone Road and Leeland Street.[16] Plans made in October 1943, when the Texas Transportation Commission signed an agreement with Houston and Harris County, referred to the new bypass as a relocation of US 75. Drawings were released by the state on January 31, 1946, and included almost continuous frontage roads, broken only at railroad crossings.[15] Although the freeway ended at Live Oak Street, a so-called "four-street distribution system"[17] of four one-way streets, timed for 30 miles per hour (50 kilometers per hour), carried traffic to Main Street.[18] Initially, the two southwestern streets — Pierce Street and Calhoun Avenue (now St. Joseph Parkway) - carried traffic towards the freeway, and the other two — Jefferson and Pease Streets — carried exiting traffic;[19] once the freeway was completed far enough to allow US 75 to be marked along it, Pease and Pierce Streets carried that highway to Fannin Street.[20]

The first freeway dedication in the state took place at 7 p.m. on September 30, 1948, at the overpass over Calhoun Road by the University of Houston. The roadway between downtown and Telephone Road was opened to traffic after speeches, but lacked an official name, being called the "Interurban Expressway", after the rail line that it replaced, by the press. Mayor Holcombe quickly started a contest to assign a name, and the city chose the winning entry on December 17, 1948. Sara Yancy of Houston Heights won $100 for her submission of "Gulf Freeway", named for the Gulf of Mexico that the highway would reach when completed. The freeway was extended to Griggs Road in February 1951, Reveille Street (onto which SH 35 was realigned) in July 1951, and was completed to the Galveston Causeway on August 2, 1952, with a ceremony on the bridge over Farm to Market Road 517 near Dickinson. However, beyond Reveille Street, the road was not built to freeway standards, with 32 at-grade intersections, though no traffic signals. The highway curved away from the old interurban right-of-way near Monroe Road, about where the Park Place streetcar line had ended. In December 1952, a short spur, now part of Interstate 610, was opened to connect with SH 225.[21] A three-way split in the northwest part of Park Place, near where Gulfgate Shopping Center opened in 1956, carried non-stop traffic to and from SH 35 and SH 225.[15][22][23] This split was also the location of a lane drop; the roadway carried six lanes (three in each direction) between Houston and the interchange, and four beyond to Galveston. After the new US 75 was completed, the old road between downtown and South Houston was dropped from the state highway system, while the remainder became State Highway 3, connecting to the Gulf Freeway via Winkler Drive, effective August 20, 1952.[24]

The first major change was made in preparation for the North Freeway connection, when the directions of Calhoun Avenue and Jefferson Street were swapped so that they would alternate. A bridge, dated 1954, was built to carry traffic from Jefferson Street over traffic to Jefferson Street,[23] and US 75 was moved to Calhoun Avenue northbound,[25] soon crossing downtown on the one-way pair of Calhoun Avenue and Pierce Street to the new North Freeway.[26] A median barrier was added in 1956 to prevent crossover accidents. Southeast of downtown Houston, the at-grade intersections proved dangerous, and only two had been replaced with interchanges by 1959, when the Texas Highway Department began a program to upgrade the road to full freeway standards. Frontage roads would be required along the entire highway, since the state had not purchased access rights, and so abutting property owners were able to build driveways to the road. To accomplish this, traffic was shifted to the newly built frontage roads so that the central main lanes could be reconstructed. This grade separation was completed from Houston to Almeda-Genoa Road (exit 34) in June 1959, Farm to Market Road 1959 (exit 30) in October 1964, Farm to Market Road 518 (exit 23) in December 1970, and Farm to Market Road 1764 (exit 15) in 1976. As the section beyond FM 1764 into Galveston had already been rebuilt,[23][27] this marked the completion of the Gulf Freeway as an actual freeway.[15]

Looking northwest along the Gulf Freeway towards downtown; the Spur 5 distributor lanes, completed in 1988, are to the right

As the first freeway in Texas, the standards of the Gulf Freeway soon became inadequate, with poor sight lines and little room to merge when entering. It also attracted development, such as Gulfgate Shopping City, the first mall in the Houston area, the Manned Spacecraft Center, and many residential developments. Heavy congestion began to affect the freeway by the early 1960s; two roughly parallel freeways — the Harrisburg Freeway and Alvin Freeway - were proposed at that time to relieve the traffic, but were not built. A short project to widen the road to six lanes between I-610 and Sims Bayou was completed in 1960, and ramp meters were installed in 1966. The I-610 interchange was rebuilt with direct connections for most movements in 1975. Plans to reconstruct the freeway near downtown began in 1972, taking about 170 houses and 22 businesses from the southwest side for the room to expand the main lanes and add parallel lanes for the Alvin Freeway. Local opposition was unsuccessful at stopping the project, and construction on this segment, and others to the southeast, took place in the 1980s. The lanes were shifted outward to make room for the transitway, which opened to I-610 on May 16, 1988. These lanes were inspired by the similar ones on the Shirley Highway in the Washington Metropolitan Area.[28] That year also marked the end of the reconstruction inside I-610, along with the elevated distribution lanes alongside the main lanes near downtown; the first short piece of the Alvin Freeway was finally connected to these in 1999. This project gave I-45 its current configuration, mostly eight main lanes wide, from Sims Bayou past I-610 to Griggs Road in 1981, to Telephone Road in 1982, to Lockwood Drive in 1985, and finally to downtown in 1988.[15]

However, this was not the end of construction on the Gulf Freeway. The highway beyond I-610 to FM 1959, which had just been upgraded in the 1950s and 1960s, saw an extension of the transitway to a temporary end near FM 1959, widening to eight lanes, and a large stack interchange at the Sam Houston Tollway. This reconstruction was completed between Almeda-Genoa Road and College Avenue in 1991, between College Avenue and Sims Bayou in 1994, and finally, in 1997, there was no construction anywhere on the entire length of the freeway when the tollway interchange was opened, along with the widening between Almeda-Genoa Road and FM 1959. A 1999 study recommended widening the entire stretch from the Sam Houston Tollway to Galveston to at least eight lanes. Construction to replace the Galveston Causeway began in mid-2003,[15] and work on a section through Webster, including a new interchange with the NASA Road 1 Bypass, began in mid-2007.[29]

Widening of the freeway between Kurland Drive at Bay Area Boulevard began in July 2011. This construction will expand the number of freeway lanes from six to ten, and increase the number of frontage lanes from four to six. The high occupancy vehicle (HOV) lane will be extended to the southern end of the construction. It will also involve rebuilding the overpasses at Dixie Farm Road and Clear Lake City Boulevard. (Dixie Farm Road bridge demolition has already been completed) [30] The project is expected to take five years to complete.[31] According to the Texas Department of Transportation, the project is approximately fifteen miles in length, starting at Kurland and ending approximately one mile south of Bay Area Boulevard.

The project has six phases. Phase one is the reconstruction of the main lanes from the northern end of the project to just south of FM 1959. The end of this phase will include the demolition and reconstruction of the bridge at the FM 1959 intersection. Phase two, planned to begin in mid-2012, will be the reconstruction of the frontage roads from just south of FM 1959 to the southern end of the project. Phase three will be the reconstruction of the main lanes on the southern half of the project, and is planned to begin in mid-2013. Phase four, scheduled to start late 2014, will be the demolition and reconstruction of the overpass at Clear Lake City Boulevard. Phase five, (which was completed) was the demolition and reconstruction of El Dorado Boulevard, and Bay Area Boulevard. The demolition and reconstruction was finished in 2016. As a result, the 1960s-era cloverleaf interchanges (with the exception of Fuqua Street and Scarsdale Boulevard) have been eliminated with overpasses. Phase six, will be making the new lanes of the freeway. It will have 5 lanes each direction along with the new overpasses for those two underpasses. This will be completed 2017.

In 2015, reconstruction and widening of I-45 began in Downtown Houston due to heavy traffic. The SB on-ramp from Allen Parkway will be moved to enter on the right side, and long-range plans call for the demolition of the outdated Pierce Elevated, with the reroute of I-45 being along Interstate 69/U.S. Highway 59 and Interstate 10/U.S. Highway 90 to the North Freeway; The parts of the Gulf Freeway at I-10 and 45 will be known as the Downtown Connector. If the rerouting of I-45 with the Pierce Elevated demolition (and/or redevelopment into the proposed Pierce SkyPark as part of additional greenspace), the connecting ramps south of Allen Parkway would become a second downtown spur, which will result in the demise of a full freeway loop around Downtown Houston (this will make Dallas, TX the only Texas metropolitan area to retain its downtown freeway loop with Interstates 30, 35E, 345, and Spur 366); as of 2018 there are no plans to place the Pierce Elevated in a tunnel similar to Spur 366 in Dallas since the Houston Metro area is prone to flooding, especially the aftermath of Hurricane Harvey.

North Freeway (Houston to Conroe)

Southbound on the North Freeway

The last alignment of US 75 before the North Freeway was built left downtown Houston to the northwest on Main Street, turning north at Airline Drive, and then northwest along the present alignment of I-45, then known as Stuebner Airline Road, Shepherd Drive, and East Montgomery Road.[25] The freeway replacement was authorized in stages between May 1945 and June 1952, when the Texas Transportation Commission adopted plans for a freeway all the way between Houston and Dallas. The North Freeway name was adopted in 1956; an unsuccessful proposal in 1965 would have renamed it the Dallas Freeway.[32] The first short piece of the freeway to open crossed Buffalo Bayou, connecting the two one-way pairs from the north end of the Gulf Freeway with the south end of Houston Avenue. This was opened on December 12, 1955, and allowed US 75 to bypass its run on Main Street;[26] it included interchanges with Allen Parkway and Memorial Drive. The next piece near downtown opened on July 24, 1962, leaving the 1955 freeway in the Allen Parkway interchange, passing east of Houston Avenue, and connected to an already-built portion at I-610. The six-lane Pierce Elevated, which occupies half a block on the southwest side of Pierce Street, required the acquisition of a number of commercial properties; the cost prevented the full block from being used. This portion opened on August 18, 1967, connecting the Gulf and North Freeways and bypassing the "four-street distribution system", which remains in its original form to this day.[15][33]

The first piece of the North Freeway to be built outside I-610 was an upgrade of existing US 75 on Stuebner Airline Road, between Airline Drive and Shepherd Drive, opened in December 1959. In April 1961, this was completed to the interchange with I-610, and on July 24, 1962 the downtown section was extended north to meet it. As each section opened, US 75 was moved to it, temporarily using I-610 to Airline Drive for about a year.[34] At the other end, US 75 was upgraded from Spring Creek at the north edge of Spring north to the San Jacinto River south of Conroe in 1960.[35] In between, the upgrade was completed from Farm to Market Road 525 to near Richey Road in December 1961, south to the 1959 segment in February 1963, and north to the 1960 segment in March 1963, completing the North Freeway except for the Pierce Elevated (1967). The freeway as initially built had eight lanes (four in each direction) between downtown and I-610, six to Farm to Market Road 1960, and four north of FM 1960.[15]

Southbound I-45 entering downtown Houston

Like the Gulf Freeway, the North Freeway soon became congested. The oil boom of the 1970s resulted in large-scale residential development along the highway, most notably The Woodlands. Since the corridor was strongly directional, with 65% of peak-hour traffic going in the peak direction, a 9.6-mile (15.4 km) contraflow lane for buses and other high-occupancy vehicles (HOV) was implemented later that decade, opening on August 28, 1979 between downtown and Shepherd Drive (exit 56B). The facility, operating during both rush hour periods, occupied the leftmost lane of the other direction, and was separated from the other lanes with a movable pylon every 40 feet (12 metres). In 1980, the existing center breakdown lanes were restriped for HOV traffic for about two miles (3.2 km) from the north end of the contraflow lane. However, off-peak traffic was increasing, and construction began in 1983 on a more permanent reversible transitway in the median. This, the second transitway in Houston (a month after the one on the Katy Freeway), opened on November 23, 1984, replacing the contraflow lane.[15][28]

Reconstruction of the main lanes and frontage roads to handle increased traffic began in 1982 just north of downtown. No lanes were added south of I-610, but the eight-lane cross section, with room for a transitway, was continued north as construction progressed. Work was completed south of Airline Drive (exit 53) in about 1985, to Shepherd Drive (exit 56B) in 1987, and to Farm to Market Road 525 (exit 60A) in 1990; this last opening allowed the transitway to extend to just south of FM 525. The Hardy Toll Road, completed on June 28, 1988 between I-610 and I-45 near The Woodlands, added capacity to that part of the corridor, and in 1990 reconstruction was completed on a short piece of I-45 from the toll road into The Woodlands. Reconstruction continued from FM 525, reaching Airtex Boulevard (exit 63) in 1997, including part of the Sam Houston Tollway interchange (completed in 2003) and a transitway extension, Cypresswood Drive (exit 68) in 1998, extending the transit way to its present terminus, and the Hardy Toll Road (exit 72) in 2003. Work on the section through The Woodlands to Research Forest Drive (exit 77) was completed in 2001, including a direct connection to Woodlands Parkway, and in 2003 work was completed to Farm to Market Road 1488 (exit 81).[15] Construction is now complete between FM 1488 (Exit 81) to the Walker County line near milepost 100 just south of the northbound truck weigh station and New Waverly, near State Highway 75 (exit 98).[36]

As of 2015, widening of the North Freeway from Downtown Houston to Sam Houston Tollway began; The plan for the project is to widen the freeway by adding managed lanes and adding the North Shepherd on and off ramps also known as Texas State Highway Spur 261 (which was already completed) prior to the I-45 widening project.

Between Conroe and Richland

The first part of I-45 between Conroe and Richland was the bypass around Huntsville.[35]

The final piece of I-45 between the cities opened on October 13, 1971, for 12 miles (19 km) between Fairfield and Streetman.[37]

Richland to Dallas (Julius Schepps Freeway)

The Central Expressway was the first freeway in Dallas, built as a new alignment of US 75. It first opened between San Jacinto Street and Fitzhugh Avenue in 1949, and soon stretched south to Hutchins. However, the stretch through downtown ran along the surface, as did the part south of the bridge over the Trinity River, due to diversion of funds to the north portion.[38] By the late 1950s, a bypass to the east of the downtown section was planned.[39] By the time construction reached Hutchins, in about 1955, the state decided to build further segments to full freeway standards. By 1961, the freeway was complete between Hutchins and the State Highway 14 split at Richland, except for the bypass around Corsicana, which was built ca. 1964.[23][35] This freeway was mostly built along the existing US 75; one of the projects in Navarro County, near Corsicana, was the first Interstate project in Texas approved under the Federal-Aid Highway Act of 1956.[37]

1955 "Yellow Book" plan for Interstates in Dallas

It was not until 1964 that I-345, extending I-45 north along the proposed Central Expressway bypass, was added as a proposed state highway.[40] I-45 and I-345 were built and opened in the 1970s, with the final section, between Lamar Street (exit 283A) and the Central Expressway (exit 283B),[23] opening on February 25, 1976.[41] At the north end, before it merged into the Central Expressway (which continued to carry US 75), I-345 straddled the bridges over Bryan Street and Ross Avenue, the latter the location of the opening ceremonies in 1949.[42] Because of their location, these two bridges were not replaced in the 1990s reconstruction of the North Central Expressway, and are the only surviving grade separations from the initial construction north from downtown.[23]

At the time the interchange with I-20 was built, the freeway that crossed I-45 was then a part of I-635; it would not be until later when, initially, I-20 was added to I-635 as a multiplex, then later still, I-635 would be truncated away from the I-45 interchange (back around to just north of what is now I-20's interchange with US 175).[43][44]

Reconstruction and widening to six lanes, from the Ellis-Navarro county line (between exits 243 and 244) north to State Highway 310 (exit 275), began in 1991.[45] The last section, near the north end, was completed in 2002.

Exit list

CountyLocationmikmExitDestinationsNotes
GalvestonGalveston0.00.0 SH 87 (Broadway Avenue J) – Downtown Galveston, East Beach, Port BolivarSouthbound exit and northbound entrance; southern terminus
1A Spur 342 (61st Street) / 71st Street Scholes International Airport, West Beach, Moody Gardens, Schlitterbahn Galveston Island
1.01.61B71st StreetSouthbound exit and northbound entrance; northbound exit is via exit 1A
1.11.81C FM 188 (Teichman Road) / SH 275 (Harborside Drive)
4.26.84Village of Tiki Island
5.28.45Frontage Road
Bayou Vista6.210.06Frontage RoadSouthbound exit only
6.710.87A SH 3 north / SH 146 north Texas City, La MarqueNorthbound exit and southbound entrance
7.011.37B SH 6 west Bayou Vista, HitchcockNorthbound exit and southbound entrance
7.311.77CFrontage RoadNorthbound exit and southbound entrance
8.213.27 SH 6 / SH 146 Texas CitySouthbound exit and northbound entrance
La Marque9.014.58Frontage RoadNorthbound exit and southbound entrance
9.715.69Frontage RoadSouthbound exit and northbound entrance
10.116.310 FM 519 (Main Street)No northbound entrance
11.117.911Vauthier RoadSouthbound entrance only (all other ramps closed until further notice); northbound exit is via exit 10 and southbound exit is via exit 12
Texas City12.219.612 FM 1765 (Texas Avenue) La Marque, Texas CityExit ramps only (southbound entrance closed until February 2021; northbound entrance closed until further notice)
13.221.213Century Boulevard, Delany RoadNo northbound exit
14.723.715 FM 1764 / FM 2004 (Mall of the Mainland Parkway) Hitchcock
15.725.316 FM 1764 east (Emmett F. Lowry Expressway) Texas CityNorthbound entrance and southbound exit, access to Mainland Medical Center
17.027.417Holland Road, Hughes Road
Dickinson18.930.419 FM 517 / Hughes Road Dickinson, Alvin
League City20.032.220 FM 646 (16th Street) Santa Feinterchange is planned to become the SH 99 (Grand Parkway) interchange
22.035.422 SH 96 / League City Parkway
22.736.523 FM 518 (W. Main Street) League City
HarrisWebster25.040.224 NASA 1 (NASA Bypass) Johnson Space CenterSouthbound exit and northbound entrance
24.339.125 FM 528 (NASA Parkway) / NASA 1 Alvin, Johnson Space CenterNorthbound exit for NASA Road 1 via frontage road, access to Houston Methodist St John Hospital; no northbound exit (closed until December 2021)
25.741.426 Bay Area Boulevard University of Houston–Clear LakeAccess to Clear Lake Regional Medical Center
26.843.127El Dorado Boulevard
Houston28.045.129 FM 2351 (Clear Lake City Boulevard) Friendswood
29.447.330 FM 1959 (Dixie Farm Road) Ellington Field
30.949.731 Beltway 8 (Frontage Road) / FM 2553 (Scarsdale Boulevard)Northbound exit and southbound entrance
32.051.532 Sam Houston Tollway
32.752.633 Beltway 8 (Frontage Road) / Fuqua StreetSouthbound exit and northbound entrance
33.654.134Almeda–Genoa Road, South Shaver Road
34.856.035Clearwood Drive, Edgebrook Drive
35.957.836Airport Boulevard, College Avenue
37.059.538 SH 3 (Monroe Road) / Winkler Drive / Bellfort Avenue / Howard Drive
38.762.338BHoward Drive, Bellfort AvenueSouthbound exit and northbound entrance
38.962.639Park Place Boulevard, Broadway Boulevard
40.164.540AFrontage RoadNorthbound exit only, not signed on overhead signage
40.364.940B I-610 east (South Loop Freeway) to SH 225 PasadenaNorthbound exit and southbound entrance; I-610 exit 32B
I-610 (South Loop Freeway) / SH 35 south to SH 225 Pearland, Alvin, PasadenaNorthbound entrance and southbound exit; I-610 exit 32B
40.465.040C I-610 west (South Loop Freeway)Northbound exit and southbound entrance; I-610 exit 32A
40.665.341AWoodridge Drive
41.767.141BGriggs Road, Broad Street
42.668.642
Alt. US 90 (South Wayside Drive / Broad Street)
Northbound exit is via exit 41B
42.768.743ATelephone Road
43.169.443BTellepsen Street
43.870.544AElgin-Lockwood, Cullen Boulevard University of HoustonNorthbound exit and southbound entrance
44.371.344B Spur 5 south University of HoustonSouthbound exit only
44.671.844CCullen Boulevard, Lockwood-Elgin University of HoustonSouthbound exit and northbound entrance
44.070.845Scott Street Texas Southern UniversitySigned as exit 45A southbound
46Saint Joseph Parkway, Pease Street, Emancipation Avenue Downtown HoustonNorthbound exit only
45.8–
45.9
73.7–
73.9
46 I-69 / US 59 (Southwest Freeway, Eastex Freeway) / SH 288 south (South Freeway) Cleveland, Lake Jackson, Freeport, VictoriaI-69/US 59 exit 129A; signed as exits 46A (north) & 46B (south); left exits to 69 northbound from 45 southbound and 288 from 45 northbound
47.576.447AAllen Parkway
47B Houston Avenue, Memorial DriveNorthbound exit only, access to Houston Amtrak Station
47.876.947CMcKinney Street Downtown HoustonNorthbound entrance and southbound exit
47.977.147DDallas Street, Pierce Street, Bagby StreetSouthbound exit and northbound entrance
48.3–
48.6
77.7–
78.2
48 I-10 / US 90 (East Freeway, Katy Freeway) Beaumont, San AntonioSigned as exits 48A (east) & 48B (west); left exit 48B northbound; I-10 exits 768A-B
49.279.249AQuitman Street / White Oak DriveSouthbound exit and northbound entrance
49.780.049BNorth Main Street, Houston Avenue, Cottage Street
50.280.850APatton StreetSouthbound exit is via exit 50
50.881.850BCavalcade Street, Link Road, Patton StreetSigned as exit 50 southbound
51.482.751 I-610 (North Loop Freeway)I-610 exits 17B-C
52.584.552AFrontage RoadSouthbound exit only
52.384.252BCrosstimbers Road
52.885.053Airline Drive
53.285.654Tidwell Road
54.287.255AParker Road, Yale Street
55.489.255BLittle York Road / Victory DriveNorthbound exit and southbound entrance
56.290.4Canino Road / Gulf Bank RoadNorthbound exit and southbound entrance; exit is via exit 57A
56.590.956A Spur 261 (North Shepherd Drive)Southbound access only
56.691.156BVeterans Memorial Drive, Little York RoadSouthbound access only
57.492.457AGulf Bank RoadSigned as exit 57B southbound
57.592.557B SH 249 (West Mount Houston Road) Tomball
58.393.859West Road
59.395.460A FM 525 (Aldine Bender Road) / Fallbrook Road
60.296.960B Beltway 8 (Frontage Road)Southbound exit is via exit 60A
60.4–
60.5
97.2–
97.4
60B Beltway 8 east / Sam Houston Parkway George Bush Intercontinental AirportSigned as exits 60C (west) and 60D (east) northbound
60.897.861Greens Road / TX-8 Frontage Road / Aldine Bender Road / Fallbrook Drive
61.799.362Kuykendahl Road, Rankin Road
62.9101.263Airtex Drive
64.6104.064Richey Road
65.7105.766A FM 1960 (Cypress Creek Parkway) Addicks, HumbleSigned as exit 66 southbound, access to Houston Northwest Medical Center
66.8107.566BHollow Tree Street, Parramatta LaneNorthbound exit and southbound entrance
68.3109.968Cypresswood Drive, Holzwarth Road, Louetta Road
69.0111.070A FM 2920 / Spring Cypress Road / Louetta Road Tomball
70.4113.370BSpring Stuebner Road
71.5115.171 SH 99 Toll (Grand Parkway) Tomball, Cypress, Katy, Humble, KingwoodNorthbound exit is via exit 70B
71.7115.472ASpring Crossing/Springwoods Village Parkway
72.5116.772B Hardy Toll Road southSigned as exit 72 northbound
Montgomery73.3118.073Rayford Road, Sawdust Road
The Woodlands74.3–
75.6
119.6–
121.7
76Robinson Road, Woodlands ParkwaySigned as exits 76A (Robinson Road), and 76B (Woodlands Parkway), The Woodlands Mall, and Cynthia Woods Mitchell Pavilion, northbound
76.2122.677 Lake Woodlands Drive, Research Forest Drive, Tamina RoadAccess to Memorial Hermann The Woodlands Hospital
77.9–
79.1
125.4–
127.3
79 SH 242 (College Park Drive, Needham Road) – Lone Star College–Montgomery, Lone Star College–University CenterNorthbound exits are signed as exits 79A (Free) and 79B (Toll)
Conroe81.0130.481 FM 1488 Magnolia, Hempstead
81.9131.882River Plantation DriveNorthbound exit only, southbound exit is via exit 83
83.2133.983Crighton Road, Camp Strake Road
83.9135.084 SH 75 north (Frazier Street) / Loop 336Signed as exit 84B northbound, access to Conroe Regional Medical Center
84.9136.685 Gladstell StreetAccess to Conroe Regional Medical Center
85.9138.287A SH 105 / FM 2854 Conroe, Lake ConroeSigned as exit 87 southbound, access to Conroe Regional Medical Center, downtown Conroe
87.2140.387BWilson RoadNorthbound exit only, southbound exit is via exit 88
88.0141.688 Loop 336 Navasota, Cleveland
88.9143.189 FM 3083 (Teas Nursery Road)
90.1145.090League Line Road
92.1148.292 FM 830 (Seven Coves Drive)
Willis94.4151.994 FM 1097 (W. Montgomery Street) Willis, Lake Conroe
95.1153.095Longstreet RoadNorthbound exit and southbound entrance
96.7155.697Calvary Road
98.0157.798 SH 75 / Shepard Hill Road, Old Danville RoadSH 75 not signed southbound
Walker102.4164.8102 SH 150 / FM 1374 / FM 1375 New WaverlySigned as exit 103 southbound
109.9176.9109 PR 40 Huntsville State Park
Huntsville112.3180.7112 SH 75 Sam Houston State University
112.7181.4113 SH 19 Riverside, Crockett, Trinity, Lake LivingstonNorthbound exit and southbound entrance
113.5182.7114 FM 1374 (Montgomery Road) Sam Houston State UniversityAccess to Huntsville Memorial Hospital
115.1185.2115Avenue S
116.0186.7116 US 190 east (11th Street) / SH 30 Huntsville, College Station, Livingston, Lake LivingstonSouth end of US 190 overlap
117.0188.3117Frontage RoadNo southbound exit
118.0189.9118
I-14 east / SH 75 / FM 1791 Sam Houston State University, Huntsville, Huntsville Regional Airport
South end of possible I-14 overlap [46]
122.9197.8123 FM 1696
132.3212.9132 FM 2989
Madison136.8220.2136 Spur 67
Madisonville141.8228.2142
I-14 west (E Main Street) / US 190 west / SH 21 west Bryan, Crockett
North end of US 190 (and possible I-14) overlap[46]
146.1235.1146 SH 75 Madisonville
152.2244.9152 SH OSR Normangee
Leon156.2251.4156 FM 977 Leona
Centerville163.9263.8164 SH 7 (St Marys Street) Centerville
Buffalo178.5287.3178 US 79 Buffalo, Palestine, Jacksonville
179.9289.5180 SH 164 Groesbeck
Freestone189.7305.3189 SH 179 Teague
Fairfield198.0318.7197 US 84 Fairfield, Teague
198.8319.9198 FM 27 Fairfield, WorthamAccess to East Texas Medical Center-Fairfield
206.2331.8206 FM 833
211.4340.2211 FM 80 Streetman, Kirvin
Navarro213.4343.4213 SH 75 / FM 246 Streetman, Wortham
218.7352.0218 FM 1394 RichlandNorthbound exit and southbound entrance
219.8353.7219A SH 14 Richland, MexiaNo northbound exit
219.9353.9219BFrontage RoadSouthbound exit and northbound entrance
220.2354.4220Frontage Road
Angus221.3356.1221Frontage Road
224.8361.8225 FM 739 Angus, Mustang
Corsicana228.5367.7228A15th StreetSouthbound exit is via exit 228B
229.0368.5228B I-45 BL north / Frontage Road CorsicanaLeft exit northbound
229.2368.9229 US 287 south PalestineSouth end of US 287 overlap
231.3372.2231 SH 31 (Martin Luther King Jr. Boulevard) Waco, Athens
232.7374.5232Roane Road, East 5th Avenue
235.2378.5235AFrontage RoadSigned as exit 235 northbound
235.7379.3235B I-45 BL south CorsicanaSouthbound exit and northbound entrance
Rice237.3381.9237Frontage Road
238.7384.2238 FM 1603
240.1386.4239 FM 1126
242.2389.8242Calhoun Street Rice
243.1391.2243Frontage Road
Ellis244.1392.8244 FM 1182
Alma246.2396.2246 FM 1183 Alma
257.6414.6247 US 287 north Waxahachie, Fort WorthNorth end of US 287 overlap
Ennis249.2401.0249 I-45 BL north / FM 85 Ennis
251.0403.9251A FM 1181 (Creechville Road)
251.7405.1251B SH 34 (E. Ennis Avenue) Kaufman, Italy
253.3407.6253 I-45 BL south Ennis
255.0410.4255 FM 879 Garrett
Palmer258.1415.4258 I-45 BL north / Parker Hill Road Palmer
258.6416.2259 FM 813 (Jefferson Street)
259.6417.8260 I-45 BL south / Frontage Road Palmer
262.3422.1262Frontage Road
263.0423.3263A Loop 561 Trumbull
263.7424.4263BFrontage RoadNorthbound exit and southbound entrance
266.1428.2264Frontage RoadSouthbound exit and northbound entrance
264.8426.2265 I-45 BL northNorthbound exit and southbound entrance
Ferris265.4427.1266 FM 660 (5th Street)
266.8429.4267Frontage Road
Dallas268.3431.8268 I-45 BL south / Malloy Bridge Road
269.4433.6269Mars Road
Wilmer270.4435.2270Belt Line Road
271.7437.3271Pleasant Run Road
Hutchins272.7438.9272Fulghum Road
273.5440.2273Wintergreen Road
274.7442.1274Dowdy Ferry Road, Palestine Street
Dallas275.9444.0275 SH 310 north (S. Central Expressway)Northbound exit and southbound entrance
276.1–
276.3
444.3–
444.7
276 I-20 (Lyndon B. Johnson Freeway) Fort Worth, ShreveportSigned as exits 276A (west) and 276B (east); I-20 exits 473B-C
278.0447.4277Simpson Stuart Road
279.3–
279.5
449.5–
449.8
279 Loop 12Signed as exits 279A (east) and 279B (west) northbound
280.1450.8280Illinois Avenue, Linfield Street
281.4452.9281Overton RoadSouthbound exit and northbound entrance
282.1454.0282 US 175 east (C.F. Hawn Freeway) KaufmanUnder construction; southbound exit and northbound entrance[47]
283.1455.6283ALamar Street
283.3455.9283BPennsylvania Avenue, Martin Luther King, Jr. BoulevardNorthbound exit and southbound entrance; access to Fair Park
284.4457.7283B US 175 east (S.M. Wright Freeway) / Martin Luther King, Jr. Boulevard KaufmanSouthbound exit and northbound entrance; access to Fair Park and MLK Jr. station; future S.M. Wright Parkway[47]
284.9458.5284A I-30 (East R. L. Thornton Freeway) Fort Worth, TexarkanaI-30 exit 46 eastbound, 47B westbound
US 75 north (via I-345) McKinneyNorthbound exit and southbound entrance; northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

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  2. Hartzel, Tony (July 7, 2002). "Road Names Honor Texas Leaders". The Dallas Morning News.
  3. American Association of State Highway and Transportation Officials (2001). List of Control Cities for Use in Guide Signs on Interstate Highways. Washington, DC: American Association of State Highway and Transportation Officials.
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  40. Transportation Planning and Programming Division (n.d.). "Interstate Highway No. 345". Highway Designation Files. Texas Department of Transportation.
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  46. "City of Huntsville, Walker County officials discuss I-14 project". The Huntsville Item. September 2, 2016.
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