U.S. Route 1 in Virginia

US 1 enters southeastern Mecklenburg County, Virginia, from Warren County, North Carolina, east of Palmer Springs, north of Wise, North Carolina, and north of an interchange between I-85 and US 1 between Wise and the state line. The U.S. Highway heads north as a two-lane road, passes to the east of Palmer Springs, and crosses Lake Gaston, an impoundment of the Roanoke River. North of the lake, the highway gains an intermittent second lane northbound to its junction with US 58 at Big Fork. The U.S. Highways run concurrently northeast along a four-lane road with center turn lane to the southwestern edge of South Hill, where the highway expands to a four-lane divided highway shortly before US 1 and US 58 Bus. split northeast from US 58. The mainline highway and business route enter the town of South Hill along Danville Street, a two-lane road with center turn lane. As the highways approach downtown South Hill, the center turn lane ends. In downtown, US 1 and US 58 Bus. turn north onto Mecklenburg Avenue next to the historic Colonial Theatre, then US 58 Bus. turns east onto Atlantic Street; SR 47 heads west from the intersection on Atlantic Street. US 1 gains a center turn lane again northeast of downtown. The U.S. Highway meets the southern end of SR 138 (Union Mill Road), then expands to a four-lane divided highway for its four-ramp partial cloverleaf interchange with I-85 before leaving the town of South Hill.

US 1 continues northeast as a three-lane road that alternates between two lanes northbound, two lanes southbound, and a center turn lane. The route expands to a four-lane divided highway after entering Brunswick County, where the highway's name becomes Boydton Plank Road, and before crossing the Meherrin River. US 1 reduces to a three-lane road and passes through Meredithville. At Cochran, the highway intersects SR 46 (Christanna Highway) just south of the Christanna Campus of Southside Virginia Community College. US 1 expands to a four-lane divided highway; the southbound lanes pass under a narrow former railroad bridge. The highway has a diamond interchange with I-85, then passes through the southern edge of the town of Alberta, where the U.S. Highway meets the eastern end of SR 136 (Church Street). East of Alberta, US 1 becomes three lanes and passes through the adjacent communities of Warfield and Sturgeonville and to the east of Rawlings before expanding to a four-lane divided highway immediately before crossing the Nottoway River into Dinwiddie County.

US 1 reduces to three lanes a short distance north of the river and passes through the town of McKenney, where the highway intersects SR 40 (Doyle Boulevard). The highway passes through DeWitt, then expands to a four-lane divided highway and crosses a former railroad line. US 1 crosses Stony Creek and drops to three lanes as it enters the county seat of Dinwiddie and passes the Dinwiddie County Court House. Northeast of Dinwiddie, US 1 passes under I-85 with no access and meets the eastern end of Airport Street, which comprises the westernmost segment of US 460 Bus. that connects US 1 with I-85 and US 460 and, to the west of the Interstate, Dinwiddie County Airport. US 1 and US 460 Bus. pass Pamplin Historical Park, which preserves the Petersburg Breakthrough Battlefield, then cross over Norfolk Southern Railway's Norfolk District rail line. The routes expand to a four-lane divided highway at its intersection with SR 142 (Simpson Road), then they meet I-85 and US 460 at a six-ramp partial cloverleaf interchange. US 1 and US 460 Bus. reduce to two lanes plus center turn lane and pass along the western and northern sides of Central State Hospital; on their curve east, the routes meet the eastern end of SR 226 (Cox Road). East of the hospital complex, the highways enter the independent city of Petersburg.

US 1 and US 460 Bus. enter Petersburg along Washington Street, a four-lane road with center turn lane. After passing under CSX's North End Subdivision rail line, the highways split into a one-way pair, with northbound US 1 and eastbound US 460 Bus. using Wythe Street and southbound US 1 and westbound US 460 Bus. using Washington Street. US 1 and US 460 Bus. pass through the residential Folly Castle Historic District, which includes Second Presbyterian Church on Washington Street, and the Atlantic Coast Line Railroad Commercial and Industrial Historic District. Eastbound SR 36 joins the eastbound concurrency at Market Street within the smaller South Market Street Historic District. US 301 Alt. joins both directions at Sycamore Street; one block to the east—a block that contains Washington Street Methodist Church—US 1 and US 301 Alt. turn north onto four-lane Adams Street. The two U.S. Highways pass between the commercial Petersburg Courthouse Historic District, which contains the namesake judicial building, and the residential Centre Hill Historic District, which contains the eponymous mansion and museum. US 1 continues into the Petersburg Old Town Historic District, where the highway intersects Bank Street and Bolingbrook Street, which is the northern terminus of US 301 Alt. Southbound US 301 leaves US 1 at Bank Street, northbound US 301 joins US 1 at Bolingbrook Street, and Bolingbrook Street also carries westbound SR 36. North of Bolingbrook Street, US 1 and US 301 cross the Appomattox River on the Martin Luther King Jr. Memorial Bridge. On the bridge, the U.S. Highways have an intersection with Bridge Street, which leads to Pocahontas Island and its namesake historic district.

US 1 and US 301 enter the independent city of Colonial Heights along Boulevard, a four-lane street with center turn lane. The highways pass along the western edge of the residential Chesterfield Highlands Historic District before intersecting SR 144 (Temple Avenue), which joins the U.S. Highways. The three highways pass under CSX's North End Subdivision, then cross Swift Creek into Chesterfield County, where SR 144 splits northwest onto Harrowgate Road at Pickadat Corner. US 1 and US 301 continue along four-lane Jefferson Davis Highway, which passes under the CSX rail line and intersects SR 10 (West Hundred Road) on the eastern edge of Chester. The U.S. routes briefly expand to a divided highway at the SR 10 intersection and within the highway's cloverleaf interchange with SR 288 (World War II Veterans Memorial Highway), which ends at I-95 (Richmond–Petersburg Turnpike) a short distance to the east. US 1 and US 301 expand to a divided highway at their junction with SR 145 (Chester Road), cross over CSX's Bellwood Subdivision, and pass to the east of Defense Supply Center, Richmond, as they pass through Bellwood. As they pass through Bensley, the U.S. Highways cross over Falling Creek, across which sits an abandoned bridge between the two carriageways.

North of Falling Creek, US 1 and US 301 expand to six lanes and have a cloverleaf interchange with SR 150 (Chippenham Parkway), which leads east to I-95 and SR 895 (Pocahontas Parkway), which leads to Richmond International Airport. Between SR 150 and SR 161 (Bells Road), the U.S. highways enter the city of Richmond. US 1 and US 301 continue into the Manchester neighborhood, where the highways intersect US 360 (Hull Street) and veer onto Cowardin Avenue, which passes along the western edge of the Manchester Residential and Commercial Historic District. The highways intersect US 60 (Semmes Avenue), then veer north onto the Robert E. Lee Bridge, which the bifurcated James River and Belle Isle. The bridge also crosses Norfolk Southern's Richmond District rail yard on the south side of the river and CSX's Rivanna Subdivision on the north side. On either end of the bridge are partial interchanges: Riverside Drive on the south side of the river accessible from the southbound direction and Second Street from the northbound direction; Second Street leads to Downtown Richmond and the Tredegar Iron Works.

US 1 and US 301 follow Belvidere Street along the east side of the Oregon Hill Historic District. The highways intersect Byrd Street and Cumberland Street, a one-way pair that provide access to SR 195 (Downtown Expressway) in between. US 1 and US 301 continue through the Monroe Park campus of Virginia Commonwealth University, within which the highways intersect SR 147—Cary Street eastbound and Main Street westbound—and veer northeast at Monroe Park. The U.S. Highways intersect US 250 (Broad Street) on the western edge of the Broad Street Commercial Historic District. US 1 and US 301 intersect SR 33 (Leigh Street) immediately before their incomplete partial cloverleaf interchange with I-64 and I-95 (Richmond–Petersburg Turnpike). There is no access from the southbound route to westbound I-64 and northbound I-95. Access to the U.S. Highways from that direction of the Interstate is via Chamberlayne Parkway, with which the routes have a partial interchange as they cross over CSX's Richmond Terminal Subdivision rail line.

US 1 and US 301 continue along Chamberlayne Avenue through the northern part of the city. The highways reduce to four lanes and intersect SR 197 (Laburnum Avenue) within the Ginter Park Historic District. At Azalea Avenue, US 301 and SR 2 continue straight on Chamberlayne Avenue; US 1 turns west onto Azalea Avenue, then north on Brook Road and leaves the city of Richmond and enters Henrico County. The highway has a partial interchange with I-95 (Richmond–Petersburg Turnpike) that allows access to southbound I-95 and from northbound I-95. US 1 becomes undivided north of the eastern end of SR 161 (Hillard Road) to the east of Lakeside. The route expands to a six-lane divided highway ahead of its intersection with Parham Road at Yellow Tavern; Parham Road heads east as SR 73, a connector between US 1 and I-95. US 1 has a cloverleaf interchange with I-295 between Glen Allen and the I-95–I-295 junction before the U.S. Highway crosses the Chickahominy River into Hanover County.

View north along US 1 in Thornburg

US 1's name changes to Washington Highway and it becomes a four-lane undivided highway shortly after entering Hanover County. The highway has brief divided sections as it passes through the eastern part of town of Ashland. Within the town, US 1 intersects SR 54 (England Street) and passes to the east of the Ashland Historic District and Randolph-Macon College. After leaving Ashland, US 1 crosses to the west side of CSX's RF&P Subdivision and crosses over the South Anna River. North of the Little River, the route passes through Doswell, where it meets the western end of SR 30 (Kings Dominion Boulevard). US 1 crosses over the Piedmont Subdivision, which is owned by CSX and operated by the Buckingham Branch Railroad, west of the Doswell Diamond, then briefly expands to a divided highway to cross the North Anna River into Caroline County. US 1 continues as Jefferson Davis Highway and meets the western end of SR 207 (Rogers Clark Boulevard) at the hamlet of Carmel Church west of Ruther Glen; SR 207 leads to US 301 at Bowling Green and thence along that U.S. Highway to the Potomac River Bridge.

US 1 passes through Golansville, Ladysmith, and Cedon before entering Spotsylvania County. The highway crosses the Matta River south of Thornburg and the Po and Ni River to the north of the hamlet. US 1 passes through Massaponax, the site of Massaponax Baptist Church, then expands to a six-lane divided highway at Spotsylvania Parkway, which leads to Spotsylvania Regional Medical Center. The U.S. Highway is joined by US 17 (Mills Drive) south of their five ramp partial cloverleaf interchange with I-95, where US 17 joins the Interstate to bypass Fredericksburg. US 1 continues with four lanes to Four Mile Fork, where the highway meets the northern end of SR 208 (Courthouse Road) and the southern end of US 1 Bus. (Lafayette Boulevard), which serves the Fredericksburg Historic District and the Fredericksburg Unit of Fredericksburg and Spotsylvania National Military Park. US 1 continues north flanked by service roads to where it enters the independent city of Fredericksburg. The highway meets SR 3 (William Street) at a cloverleaf interchange, passes under a pedestrian bridge along the edge of Mary Washington College, and crosses over the Rappahannock Canal. US 1 meets the northern end of US 1 Bus. and US 17 Bus. (Princess Anne Street) immediately before US 1 and US 17 Bus. cross the Rappahannock River into Stafford County.

US 1 southbound in Stafford County

US 17 Bus. diverges onto Warrenton Road at a four-way intersection that also serves as the western end of SR 218 (Butler Road) in the center of Falmouth and its historic district, which contains the Gari Melchers Home, the Conway House, Union Church and Cemetery, Carlton, Clearview. US 1 has a grade-separated junction with SR 8900 (Centreport Parkway), which serves Stafford Regional Airport, before crossing Potomac Creek. The highway passes the Stafford Training School and passes through the county seat of Stafford. North of Stafford, the highway briefly divides into two carriageways with a wide median. The directions of US 1 come back together and approach I-95; ramps to and from northbound I-95 connect directly with US 1 as part of the Interstate's cloverleaf interchange with SR 610 (Garrisonville Road) just west of the historic Aquia Church. US 1 crosses Aquia Creek and passes through the village of Aquia.

North of Aquia, US 1 enters the property of Marine Corps Base Quantico, within which the highway crosses Chopawamsic Creek into Prince William County. Immediately north of the county line, the route has a partial cloverleaf interchange with Russell Road, a major highway within the military base. US 1 passes the National Museum of the Marine Corps before its intersection at Triangle with SR 619 (Fuller Road), which leads east to the town of Quantico. At SR 619, US 1 leaves the base property and briefly expands to a six-lane divided highway, then splits onto separate carriageways—Fraley Boulevard northbound and Main Street southbound—to pass through the town of Dumfries, within which the U.S. Highway crosses Quantico Creek. The carriageways reunite and US 1 meets the eastern end of SR 234 (Dumfries Road) at the northern limit of the town. The Dumfries Road Commuter Lot, a park and ride facility, is located north of this intersection. US 1 crosses Neabsco Creek into the large unincorporated area of Woodbridge near the Woodbridge Campus of Northern Virginia Community College. The U.S. Highway meets the eastern end of SR 294 (Prince William Parkway) and begins to parallel the RF&P Subdivision rail line. US 1 passes the Woodbridge station, which is served by Amtrak and Virginia Railway Express, shortly before its junction with SR 123 (Gordon Boulevard). The highway then crosses the Occoquan River into Fairfax County.

US 1 continues as Richmond Highway through a partial interchange with I-95 at the southern end of Henry G. Shirley Memorial Highway. The interchange includes ramps from northbound US 1 to northbound I-95, southbound US 1 to southbound I-95, northbound I-95 to northbound US 1, and southbound I-95 to southbound US 1. At the north end of the interchange, US 1 passes under the RF&P Subdivision rail line and passes through the eastern fringe of Lorton, where it meets the northern end of SR 242 (Gunston Road). At Pohick Creek, the highway expands to six lanes and heads east and passes the Pohick Church, then through Fort Belvoir. Within the military property, US 1 crosses Accotink Creek, meets the southern end of SR 286 (Fairfax County Parkway), and passes under an overpass of a road within the base. East of Fort Belvoir, the highway passes the historic plantation Woodlawn and the western end of SR 235 (Mount Vernon Memorial Highway), which leads to Mount Vernon. US 1 is reduced to a four-lane undivided highway before it crosses Dogue Creek, and until it meets the eastern end of SR 235 (Mount Vernon Highway) just west of Little Hunting Creek.

US 1 expands to six lanes as it curves north through Hybla Valley and Groveton. On the southern edge of Huntington, the U.S. Highway has a tangent intersection with Kings Highway, which heads north as SR 241. US 1 veers northeast and expands to eight lanes at Huntington Avenue and maintains that width until its major interchange with the Capital Beltway (I-95 and I-495) at Cameron Run on the boundary between Fairfax County and the independent city of Alexandria. The interchange includes several flyovers and provides partial access to the express and local lanes of the Beltway in both directions. US 1 continues north as a six-lane divided Patrick Street into Old Town Alexandria, which at Wilkes Street splits into a one-way pair, Patrick Street northbound and Henry Street southbound. The highway intersects SR 236 (Duke Street) and SR 7 (King Street) within Old Town. North of Montgomery Street, the directions come together as Henry Street, which crosses the Monroe Avenue Bridge[2] over the RF&P Subdivision rail line and the Washington Metro's Blue and Yellow lines.

View north along US 1 in Crystal City

US 1 again becomes Richmond Highway (changed from Jefferson Davis Highway in 2019) north of the railroad tracks.[3] The four-lane divided highway, which contains the Metroway bus rapid transit course in its median, passes between the Town of Potomac Historic District (and the Del Ray neighborhood) to the west and a large residential and commercial development built on what was formerly Potomac Yard to the east. Metroway merges with the main streams of US 1 traffic, which expand to three lanes each way as the highway approaches the northern city limit at Four Mile Run. The U.S. Highway leaves Alexandria for Arlington County and has an intersection with the southern end of SR 120 (Glebe Road). US 1—again bearing the name Richmond Highway—continues through the urban village of Crystal City, where the highway has a trumpet interchange with SR 233, a connector to Washington National Airport. The route becomes a freeway north of 20th Street South and has a diamond interchange with 15th Street south on the eastern edge of Pentagon City. US 1 then joins I-395 on Henry G. Shirley Memorial Highway via a pair of flyover ramps; Richmond Highway continues north as SR 110, which passes by The Pentagon and Arlington National Cemetery on its way to Rosslyn. I-395 and US 1, which have 12 lanes over four carriageways, have a partial cloverleaf interchange with Clark Street and Boundary Channel Drive and another interchange with the George Washington Memorial Parkway before the two highways cross the Potomac River into the District of Columbia on the 14th Street Bridge complex.