Interstate 66 (I-66) is a 76.32 mile east–west Interstate Highway in the eastern United States. The highway runs from an interchange with I-81 near Middletown, Virginia, on its western end to an interchange with U.S. Route 29 (US 29) in Washington, D.C., at the eastern terminus. Much of the route parallels US 29 or State Route 55 (SR 55) in Virginia. I-66 has no physical or historical connection to US 66, which was located in a different region of the United States.
Centreville is a census-designated place (CDP) in Fairfax County, Virginia, United States and a suburb of Washington, D.C. The population was 73,518 as of the 2020 census. Centreville is approximately 20 miles (32 km) west of Washington, D.C.
The Capital Beltway is a 64-mile (103 km) auxiliary Interstate Highway in the Washington metropolitan area that surrounds Washington, D.C., the capital of the United States, and its inner suburbs in adjacent Maryland and Virginia. It is the basis of the phrase "inside the Beltway", used when referring to issues dealing with US federal government and politics. The highway is signed as Interstate 495 (I-495) for its entire length, and its southern and eastern half runs concurrently with I-95.
Virginia State Route 7 (VA 7) is a major primary state highway and busy commuter route in northern Virginia, United States. It travels southeast from downtown Winchester to SR 400 in downtown Alexandria. Its route largely parallels those of the Washington & Old Dominion Trail and the Potomac River. Between its western terminus and Interstate 395 (I-395), SR 7 is part of the National Highway System. In 1968, the Virginia State Highway Commission designated the road as the "Harry Flood Byrd Highway" between Alexandria and Winchester to commemorate Harry F. Byrd Sr. (1887–1966).
State Route 236 is a primary state highway in the U.S. state of Virginia. The state highway runs 15.63 miles (25.15 km) from U.S. Route 29 and US 50 in Fairfax east to SR 400 in Alexandria. SR 236 is a major suburban arterial highway that connects the independent cities of Fairfax and Alexandria via Annandale in Fairfax County. The state highway is known as Main Street in City of Fairfax, Little River Turnpike in Fairfax County, where the highway meets Interstate 495 (I-495), and Duke Street in Alexandria, where the road has junctions with I-395 and US 1.
The Fairfax County Parkway, numbered State Route 286, is a primary state highway in the U.S. state of Virginia, acting as an arterial route in Fairfax County with a mix of interchanges and signalized and unsignalized intersections. Its alignment runs from southeast to northwest and roughly corresponds to part of the once-proposed Outer Beltway around Washington, D.C. The first segment of the roadway opened in 1987; the road was completed in 2010.
State Route 120 is a primary state highway in the U.S. state of Virginia. Known as Glebe Road, the state highway runs 9.10 miles (14.65 km) from U.S. Route 1 (US 1) in Crystal City north to SR 123 at the Chain Bridge. SR 120 is a partial circumferential highway in Arlington County that connects the southeastern and northwestern corners of the county with several urban villages along its crescent-shaped path, including Ballston. The state highway also connects all of the major highways in Virginia that radiate from Washington, including Interstate 395, I-66, US 50, and US 29. SR 120 is a part of the National Highway System for its entire length.
State Route 123 or Virginia State Route 123 is a primary state highway in the U.S. state of Virginia. The state highway runs 29.27 miles (47.11 km) from U.S. Route 1 in Woodbridge north to the Chain Bridge across the Potomac River into Washington from Arlington. It goes by four local names. From its southern terminus to the Occoquan River Bridge, it is known as Gordon Boulevard. From the Occoquan River Bridge to the city of Fairfax it is known as Ox Road. From Fairfax until it enters the Town of Vienna, it is known as Chain Bridge Road. Then, as it passes through the Town of Vienna, it is known as Maple Avenue. After leaving the Town of Vienna, the name reverts to Chain Bridge Road, and continues this way until the intersection with I-495 in Tysons. Between Tysons and the George Washington Memorial Parkway, it is known as Dolley Madison Boulevard. After crossing over the George Washington Memorial Parkway, the name once again reverts to Chain Bridge Road and continues this way until the end of the road, at Chain Bridge. SR 123 is a partial circumferential highway in Northern Virginia that connects Woodbridge in eastern Prince William County with the independent city of Fairfax and the Fairfax County communities of Vienna, Tysons, and McLean, the last being the home of the National Counterterrorism Center and the Central Intelligence Agency. The state highway also connects all of the major highways that radiate from Washington, including Interstate 95 (I-95), I-66, US 29, US 50, SR 267, and the George Washington Memorial Parkway. Furthermore, SR 123 crosses another pair of circumferential highways, I-495 and the Fairfax County Parkway, and SR 7, a major northwest–southeast highway through Northern Virginia. The state highway is a part of the National Highway System for its entire length.
State Route 241 is a primary state highway in the U.S. state of Virginia. The state highway runs 1.88 miles (3.03 km) from U.S. Route 1 in Huntington north to SR 236 in Alexandria. SR 241 connects US 1 and SR 236, bypass Old Town Alexandria to the southwest. The state highway connects those highways with Interstate 95 and I-495, Huntington Avenue, and Eisenhower Avenue in a series of interchanges along the boundary of Fairfax County and the independent city of Alexandria. SR 241 also connects the above highways to the Huntington station of the Washington Metro, for which the portion of the highway from US 1 to the station is part of the National Highway System.
State Route 28 in the U.S. state of Virginia is a primary state highway that traverses the counties of Loudoun, Fairfax, Prince William, and Fauquier in the U.S. state of Virginia. The route serves as a major artery in the Northern Virginia region, with it being an important two-lane highway in rural Fauquier and Prince William Counties, the main thoroughfare through Manassas and Manassas Park, and a high-capacity freeway through Fairfax and Loudoun Counties.
U.S. Route 17 (US 17) is a part of the United States Numbered Highway System that runs from Punta Gorda, Florida, to Winchester, Virginia. In Virginia, the U.S. Highway runs 255.83 miles (411.72 km) from the North Carolina state line in Chesapeake north to its northern terminus at US 11, US 50, and US 522 in Winchester. US 17 is a major highway in the eastern half of Virginia. The U.S. Highway connects the Albemarle Region of North Carolina with the Hampton Roads metropolitan area. Within the urban area, US 17 passes through the South Hampton Roads cities of Chesapeake, Portsmouth, and Suffolk and the Virginia Peninsula city of Newport News. Between Yorktown and Fredericksburg, the U.S. Highway serves as the primary highway of the Middle Peninsula. At Fredericksburg, US 17 leaves the Atlantic Plain; the highway passes through the Piedmont town of Warrenton and crosses the Blue Ridge Mountains on its way to Winchester in the Shenandoah Valley. The route from Tappahannock to Winchester roughly follows the Confederate march during the Civil War to Gettysburg.
State Route 237 is a primary state highway in the U.S. state of Virginia. The state highway runs 13.07 miles (21.03 km) from SR 236 in Fairfax east to U.S. Route 50 in Arlington. SR 237 connects Fairfax and Arlington with Falls Church. Between Fairfax and Falls Church, the state highway mostly runs concurrently with US 29. East of Falls Church, SR 237 parallels Interstate 66 (I-66) and connects several of Arlington's urban villages.
State Route 228 is a primary state highway in the U.S. state of Virginia. The state highway runs 4.53 miles (7.29 km) from SR 657 at the southern town limit of Herndon north to SR 7 near Dranesville. SR 228 is the main north–south highway through Herndon, connecting the town directly with SR 7 and indirectly with SR 267 in northwestern Fairfax County.
Virginia State Route 234 is a primary state highway in the U.S. state of Virginia. It runs from U.S. Route 1 near Dumfries via Independent Hill as Dumfries Road, bypasses Manassas as Prince William Parkway, and has a brief concurrency with Interstate 66 for 2.27 miles (3.65 km) between exits 44 and 47 before continuing northwest via Catharpin to U.S. Route 15 near Woolsey as Sudley Road.
State Route 645 in Fairfax County, Virginia is a secondary state highway. There are six portions, three of them being major, named Wall Road, Lees Corner Road, Stringfellow Road, Clifton Road, Main Street and Burke Lake Road. There are also numerous overlaps : some include SR 657 / Centreville Road, U.S. Route 50, SR 652, SR 612, and SR 641. A concurrency used to exist at US 29 near Centreville until the 1990s.
State Route 609 in Fairfax County, Virginia is a secondary state highway which traverses western portion of the county. The road is also known as Pleasant Valley Road.
State Route 608 in Fairfax County, Virginia is a secondary state highway which traverses the western portion of the county. Before the Fairfax County Parkway from US 29 to Reston was complete, SR 608 was the main north–south road in western Fairfax County.
State Route 606 in Fairfax and Loudoun Counties, Virginia is a secondary state highway traversing the communities of Reston, Herndon, Sterling, Arcola, and South Riding. The road is important not only because it is an inter-county connector, but it goes around the back of Dulles Airport, is part of the Loudoun County Parkway, and it provides a shortcut between the Reston / Herndon area and U.S. Route 50. Although the Herndon streets are not technically part of SR 606, they are signed as SR 606, and they connect to streets that are part of SR 606, thus providing a continuous route.
Schneider Crossroads is an unincorporated community in Fairfax County, in the U.S. state of Virginia. State Route 620 and State Route 609 cross here and it is located 5.3 miles northwest by road from Centreville. It contains little more than a florists' and a site called Cox Farms. Pleasant Valley Golf Club lies to the northeast, with the two other quadrants also incorporated into yet undeveloped Fairfax County Park Authority parks. As the crossroads is a major traffic bottleneck, with traffic flow formally managed by 4-way stop signs, Loudoun County, just west of the crossroads, offered over a million of the county's funds in 2012 to pay for the intersection upgrade as their residents were inconvenienced the most by the traffic problem, although the intersection is completely in Fairfax County. The Virginia Department of Transportation determined that the optimal solution was a roundabout which was built from 2015 to 2016. Although traffic is much improved, the poor nature of the two-lane Braddock Road to the east of the traffic circle, including a hairpin turn and no shoulder, is now the main impediment of east-bound morning traffic.
State Route 662 is a secondary state highway in the U.S. state of Virginia, and traverses western Fairfax County.
SR 244 in Lincolnia near Lake Barcroft 
I-495 in Annandale / Springfield 
SR 28 in Centreville 
SR 705 in Stone Ridge 
