| Richmond Highway | ||||
SR 110 highlighted in red | ||||
| Route information | ||||
| Maintained byVDOT | ||||
| Length | 2.41 mi[1] (3.88 km) | |||
| Existed | 1964–present | |||
| Major junctions | ||||
| South end | ||||
| Major intersections | ||||
| North end | ||||
| Location | ||||
| Country | United States | |||
| State | Virginia | |||
| Counties | Arlington | |||
| Highway system | ||||
| ||||
Virginia State Route 110 (SR 110) is a primarystate highway inArlington,Virginia. Known as theRichmond Highway (formerlyJefferson Davis Highway), the state highway runs 2.41 miles (3.88 km) fromU.S. Route 1 (US 1) andInterstate 395 (I-395) inCrystal City north toI-66 in theRosslyn neighborhood. SR 110 is a four- to six-lanefreeway (with the exception of oneat-grade intersection and a few driveways) that parallels thePotomac River, providing a connection between several of Arlington'surban villages and major landmarks, includingthe Pentagon, which is the headquarters of theUnited States Department of Defense, and the grounds ofArlington National Cemetery. The highway also provides access toSR 27, an east–west freeway between the Pentagon and the cemetery, and theGeorge Washington Parkway that parallels thePotomac River. SR 110 is a part of theNational Highway System for its entire length.[2]
SR 110 is a part of thePentagon road network, a network of freeways and surface roads built concurrent with the construction of the Pentagon in the early 1940s. The state highway received its numerical designation in 1964 when maintenance responsibility was transferred to theVirginia Department of Transportation. SR 110's most significant changes in routing were relocation of the highway in Rosslyn to tie into I-66 in the 1980s and relocation of the freeway at the Pentagon to provide a larger security buffer for the building after theSeptember 11 attacks. The highway is sometimes closed for large events held at or around the Pentagon, including theMarine Corps Marathon.[3] In 2019, SR 110 was renamed to Richmond Highway.

SR 110 begins at a partial interchange with US 1 (the southern continuation of the Richmond Highway) in Crystal City where US 1 joins I-395 to cross the14th Street Bridge into Washington; the interchange allows access to and from US 1 in the direction of Alexandria. Immediately to the north, the state highway has a partial interchange with I-395 (Henry G. Shirley Memorial Highway) that allows access from southbound SR 110 to northbound I-395 and US 1 and from southbound I-395 to northbound SR 110. The southbound exit ramp also includes a ramp for Army–Navy Drive, one of the main streets ofPentagon City. North of I-395, SR 110 heads north with six lanes immediately to the east of the Pentagon reservation. The southbound freeway has ramps to and from the Pentagon South Parking area, which serves as the main and visitor entrance to the Department of Defense headquarters. SR 110 passes under a pair of pedestrian bridges from Pentagon parking areas on between Boundary Channel Drive, which parallels the freeway, and theBoundary Channel'sPentagon Lagoon. SR 110 has a southbound exit to and entrance from the Pentagon Mall Terrace and River Terrace areas before the highway leaves the vicinity of the Pentagon by passing under SR 27 (Washington Boulevard). The partial interchange between the highways allows access from eastbound SR 27 to northbound SR 110 and from southbound SR 110 to westbound SR 27, which leads to southbound I-395 andSR 244 (Columbia Pike).[1][4]

North of SR 27, the freeway passes between theWashington Metro'sBlue Line on the east and the grounds of Arlington National Cemetery to the west. SR 110 has a northbound exit to and southbound entrance from Memorial Drive, which is the main entrance to the national cemetery and also leads to theArlington Memorial Bridge to Washington and theGeorge Washington Memorial Parkway. SR 110 continues north with four lanes and has its sole at-grade intersection at Marshall Drive, which leads to theMarine Corps War Memorial, also known as the Iwo Jima Memorial, and theNetherlands Carillon. The highway leaves the cemetery for the urban village of Rosslyn, where the highway reaches its northern terminus. SR 110 passes underUS 50 with no access then has a northbound exit and southbound entrance for Wilson Boulevard, one of the main streets of Rosslyn. Immediately to the north, the highway ends at a partial interchange with I-66 allowing access to and from the direction ofFalls Church. Westbound I-66 leads toDulles International Airport andFront Royal.[1][4]


The road was constructed as a part of the Pentagon Road network duringWorld War II. Those roads were transferred to the Virginia Department of Highways on December 17, 1964, and assigned the number SR 110. At this time, the north end was reconfigured to accommodate the construction to theTheodore Roosevelt Bridge in 1964 over the Potomac River and the re-routing ofArlington Ridge Road. As a result, the north end of SR 110 was shifted west toward the prior bridge that carried US 50 over Arlington Ridge Road. SR 110 then proceeded north on the Arlington Ridge Road right-of-way, under the new bridges that carried the approaches to the Roosevelt Bridge reaching Wilson Boulevard. The road extended north to merge with the future I-66 at the Virginia end of the Roosevelt Bridge. Until the 1980s, this extension ended with the exit and entrance ramps to Lee Highway at Lynn Street. However, when I-66 was completed, this stub was extended so that SR 110 had full access to westbound I-66. One block of the historic Arlington Ridge Road was left to act as a frontage road between Wilson Boulevard and 15th Street North.
Following theSeptember 11 attacks, SR 110 was closed to trucks and tour buses due to its proximity to the Pentagon. Police checkpoints were staffed around the clock to enforce this restriction. In September 2002, a contract was awarded to reroute SR 110 to increase the standoff distance between vehicles and the Pentagon. The project, called the Pentagon Secure Bypass,[5] was completed in 2004. SR 110 was shifted eastward in a long arc to maintain a buffer distance from the Pentagon and a two-lane bridge to provide access to the Pentagon North parking lot and two pedestrian bridges were built over the new route. These and related security improvements cost $35 million (equivalent to $58 million in 2024[6]) and were completed in October 2004.[7][8]
In April 2019, the Arlington County Board voted to rename SR 110 to Richmond Highway. This went into effect in October 2019.[9]
The entire route is inArlington County. All exits are unnumbered.
| Location | mi[1][10] | km | Destinations | Notes | |
|---|---|---|---|---|---|
| Crystal City | 0.00 | 0.00 | Southern terminus; Richmond Highway continues south along US 1 | ||
| 0.20 | 0.32 | Exit 8B on I-395; southbound exit and northbound entrance | |||
| The Pentagon | 0.30 | 0.48 | Pentagon Transit Center | Southbound exit and entrance; authorized buses only | |
| 0.90 | 1.45 | Pentagon River Terrace, Mall Terrace | Southbound exit and entrance | ||
| Arlington Cemetery | 1.12 | 1.80 | Southbound exit and northbound entrance | ||
| 1.70 | 2.74 | Arlington Cemetery /Memorial Bridge –Washington | Northbound exit and southbound entrance; servesArlington Cemetery station | ||
| 1.90 | 3.06 | Marshall Drive –Netherlands Carillon,Iwo Jima Memorial,Fort Myer | At-grade intersection; no northbound entrance | ||
| Rosslyn | 2.30 | 3.70 | Wilson Boulevard –Rosslyn | Northbound exit and southbound entrance | |
| 2.41 | 3.88 | Exit 75 on I-66; tolled PM rush hours (except HOV-3+ vehicles); northern terminus | |||
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
pentagon truck bomb.