Texas State Highway 121
State Highway 121 (SH 121) is a state highway angling from southwest to northeast through north central Texas. It runs from downtown Fort Worth, Texas at the junction of Interstate 35W to Bonham, Texas, just north of a junction with U.S. Highway 82.
Route information | ||||
---|---|---|---|---|
Maintained by TxDOT | ||||
Length | 85.563 mi[1] (137.700 km) | |||
Existed | by 1939–present | |||
Major junctions | ||||
Southwest end | ![]() ![]() ![]() ![]() | |||
| ||||
Northeast end | ![]() | |||
Highway system | ||||
|
Between Fort Worth and Euless, SH 121 is known as Airport Freeway (east of Euless, this name applies to SH 183). East of Coppell, the highway functions as the frontage road for the Sam Rayburn Tollway, a toll road that runs northeast to McKinney. From McKinney to Melissa, the state highway is concurrent with US 75 and the North Central Expressway. Northeast of Melissa, SH 121 is a less-traveled roadway often referred to as the Sam Rayburn Highway.
Route description
![](../I/Bus_Hwy_121_south_from_IH35E_south.jpg.webp)
Sections between downtown Fort Worth and Grapevine are freeway, including a small segment near Hurst that coincides with Interstate 820. At Bedford, Texas it has an interchange with SH 183, the Irving freeway that leads toward Dallas; it has an interchange with SH 360, which leads toward Arlington, just to the west of the north entrance to the Dallas/Fort Worth International Airport, to which State Highway 121 gives access. At Grapevine it has interchanges with SH 114 and Interstate 635 before becoming a limited-access tollway that passes between Lewisville and Frisco.
![](../I/Toll_Texas_121.svg.png.webp)
It is very heavily traveled south and west of McKinney and has become an urban highway due to the rapid growth of the Dallas–Fort Worth metroplex. Service roads extending southwest to northeast along the corridor from Lewisville to McKinney are free of charge; however the main lanes within the right-of-way are tolled as part of the Sam Rayburn Tollway operated by the North Texas Tollway Authority (NTTA). The highway's northeastern section between Melissa and Bonham carries less traffic and until recently was a two-lane rural highway. However, in recent years with an increase in traffic, the 19 mile section between the Collin-Fannin County line and its junction with SH 56 in Bonham has been upgraded to a "Super Two" highway system. This allows for alternating passing lanes. Beginning in 2016, the segment between Melissa and the Collin-Fannin County line is being upgraded to a four-lane divided highway system. In addition, a two mile stretch between SH 56 and US 82 within Bonham city limits, was upgraded to a four-lane highway system with a continuous left-hand turn lane. Long term planning calls for upgrading the 19 mile stretch, from the Collin-Fannin County line to SH 56 in Bonham, into a four-lane divided highway system.
It meets Interstate 35E at Lewisville, SH 289 near Frisco, US 75 and US 380 in McKinney, US 69 at Trenton, and SH 78 just north of Bonham.
Construction began in 2009 on the extension of 121 south from Fort Worth to Cleburne, as a toll road called Chisholm Trail Parkway in Tarrant and Johnson Counties. This section is operated by the NTTA and the entire project, from IH 30 to U.S. 67 opened to traffic in 2013.[2]
In March 2009, work was completed on the eventual southbound lanes on a short stretch of 121 northeast of DFW Airport, which currently shares southbound and northbound traffic. This work upgraded two signalized at-grade intersections to a freeway, with overpasses at both intersections, improving traffic in that area.[3] The northbound freeway lanes are currently under construction, which also include new, separate exits and entrances for Freeport Parkway and Grapevine Mills Boulevard/Sandy Lake Road.
![](../I/Business_Texas_State_Highway_121.JPG.webp)
Sam Rayburn Tollway
From McKinney to Coppell, State Highway 121 acts as a frontage road to Sam Rayburn Tollway, contrary to the popular misconception that the Sam Rayburn Tollway was the new SH 121.
Controversy
In early 2007, the Spanish firm Cintra agreed to a $2.8 billion, 50-year deal where they would lease the highway from TxDOT, finish building and maintain it, and collect the tolls.[4] However, critics of the deal questioned both its length—the contract allowed Cintra to collect tolls for 50 years—and the fact that the North Texas Tollway Authority (NTTA) was prevented from bidding on the contract. In addition, general opposition to the toll plan organized, pointing out that the segment through Denton County had already been paid for by taxpayer money.[5]
To answer some of these complaints, Texas legislators pressed the Texas Department of Transportation to allow the NTTA to bid.[6] The Authority announced their proposed bid in early May 2007, which would provide approximately $3.3 billion in road funding, but is based on traffic counts that differ from those used by Cintra.[7]
On June 28, 2007, the Texas Transportation Commission announced it would pursue the proposal from the North Texas Tollway Authority (NTTA).[8]
Route history
SH 121 was originally numbered on March 17, 1927 as a direct routing between Fort Worth and SH 40 near the Dallas-Denton County line.[9] On April 24, 1928, it extended to McKinney.[10] By 1933, the route had been completed from Ft. Worth northeast through Grapevine to its intersection with SH 40/U.S. Route 77 in far southern Denton County. On July 15, 1935, the east end was truncated to the Denton-Dallas county line.[11] On January 6, 1939, the section from the Dallas-Denton County line to SH 40/US 77 was restored.[12] A road was designated on February 21, 1938, from SH 114 to SH 121; either SH 114 Loop or SH 121 Loop. This was renumbered as Loop 10 on September 26, 1939.[13]
On November 24, 1941, SH 121 was extended from old US 77 to new US 77. On December 16, 1943, the section of SH 121 from US 77 (former SH 40) to McKinney was restored, and the ambitious plan to extend SH 121 northeast beyond McKinney to Bonham was approved by TxDOT, a part of which absorbed Farm to Market Road 82 between Bonham and Trenton. The section from Bonham to Randolph was designated as SH 263 until March 21, 1939. But it wasn't until 1954 that the next section of this highway was completed between U.S. 77 at Lewisville and U.S. Route 75 near McKinney. The final section between McKinney and Trenton was not completed until November 20, 1963, including an extension around the western side of Bonham. In 1965, the section from downtown Fort Worth to Interstate 820 was transferred to newly completed freeway sections. On November 31, 1969, SH 121 was rerouted over Spur 459, which was cancelled. The old route of SH 121 was given to the city of Grapevine.
TxDOT proposed extending SH 121 to FM 1187, via a route to be known as the Northside–Southwest Freeway, on October 4, 1973.[14] This proposed extension was canceled on August 29, 1985.[15]
On April 14, 1980, SH 121 was relocated in Bedford and Grapevine. On November 18, 1999, SH 121 was rerouted over Spur 553, which was cancelled. The old route of SH 121 became Business SH 121. On February 27, 2003, SH 121 was extended to US 67 in Cleburne.
Major intersections
County | Location | mi[16] | km | Destinations | Notes | ||
---|---|---|---|---|---|---|---|
Tarrant | Fort Worth | 0.0 | 0.0 | ![]() ![]() ![]() ![]() ![]() | I-35W exit 52B, access to Fort Worth Central Station | ||
0.8 | 1.3 | Sylvania Avenue | |||||
1.2 | 1.9 | Riverside Drive | |||||
2.1 | 3.4 | Beach Street | |||||
2.7 | 4.3 | Maxine Street | Northbound exit and southbound entrance | ||||
Haltom City | 3.1 | 5.0 | Haltom Road | ||||
4.2 | 6.8 | Carson Street | |||||
4.9 | 7.9 | Minnis Drive | |||||
Richland Hills | 6.4 | 10.3 | ![]() | Access to Richland Hills Station | |||
Hurst | 7.3 | 11.7 | ![]() | south end of I-820 overlap; SH 121 south follows exit 24B | |||
![]() ![]() | south end of SH 183 overlap; I-820 exit 24A | ||||||
8.4 | 13.5 | ![]() | I-820 exit 23, access to North Hills Hospital | ||||
![]() ![]() ![]() | northbound exit and southbound entrance; I-820 exit 23A | ||||||
8.5 | 13.7 | ![]() ![]() | I-820 exit 22B | ||||
8.9 | 14.3 | ![]() | north end of I-820 overlap; SH 121 north follows exit 22A | ||||
10.1 | 16.3 | ![]() | |||||
Hurst–Bedford line | 11.5 | 18.5 | Norwood Drive / Brown Trail | ||||
Bedford | 12.5 | 20.1 | Bedford Road / Forest Ridge Drive | ||||
13.0 | 20.9 | ![]() | Access to Texas Health HEB | ||||
13.6 | 21.9 | ![]() | north end of SH 183 overlap; no direct southbound exit (signed at Murphy Drive) | ||||
14.0 | 22.5 | Westpark Way / Murphy Drive | |||||
15.0 | 24.1 | Harwood Road | |||||
![]() ![]() ![]() | southbound exit and northbound entrance | ||||||
Bedford–Euless line | 16.7 | 26.9 | ![]() | ||||
Euless–Grapevine line | 17.2 | 27.7 | Glade Road | ||||
Grapevine | 18.1 | 29.1 | Hall-Johnson Road | ||||
18.7 | 30.1 | ![]() | Northbound exit and southbound entrance | ||||
19.3 | 31.1 | ![]() | Southbound exit and northbound entrance | ||||
20.8 | 33.5 | ![]() ![]() | south end of SH 114 overlap | ||||
21.9 | 35.2 | ![]() ![]() ![]() ![]() | no northbound entrance | ||||
22.4 | 36.0 | ![]() | North end of SH 114 overlap | ||||
22.9 | 36.9 | DFW Airport (International Parkway) | |||||
24.3 | 39.1 | ![]() | I-635 exit 36 | ||||
24.7 | 39.8 | Bass Pro Drive / Bethel Road / Grapevine Mills Trail | |||||
25.3 | 40.7 | ![]() | northbound exit and southbound entrance, access to Grapevine Mills Mall | ||||
Dallas | Coppell–Grapevine line | 26.2 | 42.2 | Grapevine Mills Boulevard / Sandy Lake Road / Freeport Parkway | |||
Denton | Lewisville | 27.6 | 44.4 | ![]() ![]() | |||
Dallas | Coppell–Lewisville line | 28.8 | 46.3 | ![]() | north end of freeway | ||
Denton | Lewisville | 30.0 | 48.3 | ![]() | |||
31.1 | 50.1 | ![]() ![]() | south end of Sam Rayburn Tollway overlap; south end of freeway; I-35E exits 447A-447B-448A | ||||
Carrollton | 32.3 | 52.0 | Marchant Boulevard / Huffines Boulevard | ||||
33.2 | 53.4 | ![]() | north end of Sam Rayburn Tollway overlap; north end of freeway | ||||
34.3 | 55.2 | ![]() | |||||
Lewisville | 35.1 | 56.5 | ![]() ![]() | ||||
35.7 | 57.5 | ![]() ![]() ![]() ![]() ![]() ![]() | |||||
36.6 | 58.9 | ![]() | |||||
36.9 | 59.4 | ![]() ![]() | |||||
The Colony | 38.3 | 61.6 | ![]() | ||||
![]() | southbound exit and northbound entrance | ||||||
39.9 | 64.2 | ![]() | |||||
Collin | Plano–Frisco line | 40.7 | 65.5 | ![]() | |||
41.7 | 67.1 | ![]() | |||||
![]() | |||||||
42.8 | 68.9 | ![]() ![]() ![]() | |||||
![]() | interchange | ||||||
43.9 | 70.7 | ![]() | |||||
45.2 | 72.7 | ![]() | |||||
46.3 | 74.5 | ![]() | |||||
Plano–Frisco– Allen–McKinney quadripoint | 47.2 | 76.0 | ![]() ![]() | ||||
Allen–McKinney line | 48.1 | 77.4 | ![]() | ||||
49.0 | 78.9 | ![]() | |||||
50.0 | 80.5 | ![]() | |||||
50.8 | 81.8 | ![]() | |||||
51.8 | 83.4 | ![]() | |||||
52.9 | 85.1 | ![]() ![]() | south end of US 75 overlap; SH 121 south follows exit 39 | ||||
see US 75 | |||||||
Melissa | 61.2 | 98.5 | ![]() | north end of US 75 overlap; SH 121 north follows exit 45 | |||
![]() | south end of SH 5 overlap | ||||||
62.2 | 100.1 | ![]() | Interchange; north end of SH 5 overlap | ||||
63.7 | 102.5 | ![]() | |||||
64.9 | 104.4 | ![]() | |||||
Anna | Outer Loop Road | ||||||
![]() | south end of FM 455 overlap | ||||||
![]() ![]() | north end of FM 455 overlap | ||||||
| 71.6 | 115.2 | ![]() | ||||
Desert | 75.4 | 121.3 | ![]() | ||||
Fannin | Trenton | ![]() | south end of FM 814 overlap | ||||
![]() | north end of FM 814 overlap | ||||||
80.7 | 129.9 | ![]() ![]() ![]() ![]() | Interchange | ||||
| 86.0 | 138.4 | ![]() ![]() | ||||
| 86.5 | 139.2 | ![]() | Interchange | |||
| 87.7 | 141.1 | ![]() ![]() | ||||
| 90.5 | 145.6 | ![]() | ||||
| 93.0 | 149.7 | ![]() ![]() | ||||
Bonham | 93.7 | 150.8 | ![]() | South end of SH 56 overlap | |||
94.2 | 151.6 | ![]() | North end of SH 56 overlap | ||||
96.1 | 154.7 | ![]() | US 82 exit 670 | ||||
96.9 | 155.9 | ![]() | |||||
| 98.3 | 158.2 | ![]() | ||||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi |
Business routes
Randolph
![]() | |
---|---|
Location | Randolph |
Length | 1.734 mi[17] (2.791 km) |
Existed | 1990[17]–present |
Business State Highway 121-D (Bus. SH 121-D) is a business route of SH 121 that serves the town of Randolph. The highway was designated in 1990 with the mileage being transferred from Loop 451.[18]
Bus. SH 121-D begins at an intersection with SH 121 and travels northeast before intersecting with FM 896. After intersecting with FM 896, the highway runs north and has a brief overlap with SH 11 through the town. After leaving the concurrency with SH 11, Bus. SH 121-D runs north and northeast before ending at an intersection with SH 121.
- Junction list
The entire route is in Fannin County.
Location | mi[19] | km | Destinations | Notes | |
---|---|---|---|---|---|
| 0.0 | 0.0 | ![]() | ||
Randolph | 0.5 | 0.80 | ![]() | ||
0.6 | 0.97 | ![]() | South end of SH 11 overlap | ||
0.7 | 1.1 | ![]() | North end of SH 11 overlap | ||
| 1.7 | 2.7 | ![]() | ||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
|
Lewisville
![]() | |
---|---|
Location | Dallas and Denton counties |
Length | 8.486 mi[20] (13.657 km) |
Existed | 1999[20]–present |
Business State Highway 121-H (Bus. SH 121-H) is a business route of SH 121 that serves the town of Lewisville. The highway was designated in 1999 when SH 121 was re-routed around the city.
Bus. SH 121-H begins at an interchange with SH 121/Sam Rayburn Tollway in Coppell. The highway runs northeast through industrial areas of Lewisville and turns to the north at an interchange with FM 3040 (Round Grove Road)/Denton Tap Road. Bus. North of here, SH 121-H runs by many residential areas before meeting I-35E. North of I-35E, the highway runs just south of the city's central business district and turns in a northeast direction. At Main Street, Bus. SH 121-H turns in a more eastern direction and crosses over the Elm Fork Trinity River. The highway continues to run east and meets FM 544 at an intersection before ending at an interchange with SH 121/Sam Rayburn Tollway.
- Junction list
County | Location | mi[21] | km | Destinations | Notes |
---|---|---|---|---|---|
Dallas | Coppell | 0.0 | 0.0 | ![]() ![]() | Interchange |
Denton | Lewisville | 1.0 | 1.6 | ![]() | Interchange |
3.3 | 5.3 | ![]() | I-35E exit 450 | ||
4.5 | 7.2 | Main Street | Former FM 1171 | ||
5.7 | 9.2 | Bridge over the Elm Fork Trinity River | |||
7.7 | 12.4 | ![]() | |||
8.4 | 13.5 | ![]() ![]() | Interchange | ||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi |
References
- Transportation Planning and Programming Division (n.d.). "State Highway No. 121". Highway Designation Files. Texas Department of Transportation. Retrieved 2010-06-15.
- http://www.ntta.org/NR/rdonlyres/3FFA8F0C-1525-445F-A169-8B47A341B396/0/NTTA_SWPCT_Brief.pdf", Southwest Parkway/Chisholm Trail Project Status Report March 2009 from the NTTA.
- http://www.wfaa.com/video/?z=y&nvid=344241 "Overpasses give non-stop route between Frisco and D/FW", WFAA-TV report, March 20, 2009.
- Archived 2007-05-26 at the Wayback Machine
- (PDF) https://publicdocs.txdot.gov/minord/MinuteOrderDocLib/003676970.pdf. Missing or empty
|title=
(help) - (PDF) https://publicdocs.txdot.gov/minord/MinuteOrderDocLib/003676991.pdf. Missing or empty
|title=
(help) - (PDF) https://publicdocs.txdot.gov/minord/MinuteOrderDocLib/003673871.pdf. Missing or empty
|title=
(help) - (PDF) https://publicdocs.txdot.gov/minord/MinuteOrderDocLib/003676256.pdf. Missing or empty
|title=
(help) - (PDF) https://publicdocs.txdot.gov/minord/MinuteOrderDocLib/003676241.pdf. Missing or empty
|title=
(help) - Texas State Highway Department. "Minute Orders of the October 4, 1973 Meeting of the Texas State Highway Department" (PDF). Austin, TX. Retrieved August 17, 2020.
- Texas Department of Highways and Public Transportation. "Minute Orders of the August 29, 1985 Meeting of the Texas State Highway and Public Transportation Commission" (PDF). Austin, TX. Retrieved August 17, 2020.
- Google (September 30, 2013). "SH 121" (Map). Google Maps. Google. Retrieved September 30, 2013.
- Transportation Planning and Programming Division (n.d.). "Business State Highway No. 121-D". Highway Designation Files. Texas Department of Transportation. Retrieved July 11, 2017.
- Transportation Planning and Programming Division (n.d.). "State Highway Loop No. 451". Highway Designation Files. Texas Department of Transportation. Retrieved July 11, 2017.
- Google (July 11, 2017). "Overview Map of Bus. SH 121-D" (Map). Google Maps. Google. Retrieved July 11, 2017.
- Transportation Planning and Programming Division (n.d.). "Business State Highway No. 121-H". Highway Designation Files. Texas Department of Transportation. Retrieved July 11, 2017.
- Google (July 11, 2017). "Overview Map of Bus. SH 121-H" (Map). Google Maps. Google. Retrieved July 11, 2017.
External links
![]() |
Wikimedia Commons has media related to Texas State Highway 121. |
- Denton & Collin County section of SH 121 - from dfwfreeways.info