SR 612 begins in Fairfax County at an intersection with SR 620 at the Clifton / Fairfax border and travels through a long residential area consisting of single-family homes. It ends at an intersection with SR 641 on the Clifton / Fairfax Station border. There is a portion of southern Colchester Road that is closed, so this segment is discontinuous. Colchester Road and all other Fairfax County portions of SR 612 are 2 lane roads.
Yates Ford Road (Fairfax County)
At this point SR 612 turns east and is concurrent with SR 641, Chapel Road. SR 612 then turns southwest on Yates Ford Road at the Clifton / Fairfax Station border and travels through another residential area consisting of single-family homes. It ends at an intersection with SR 645 in Clifton. This portion of SR 612 was designated a Virginia Byway on May 3, 1997.
Henderson Road (Fairfax County)
At this point SR 612 turns west and is concurrent with SR 645, Clifton Road. SR 612 then turns south on Henderson Road in Clifton. This is the beginning of the SR 612 commuter route as, on Henderson Road, SR 612 overlaps with SR 643. It ends at a Y intersection with SR 612 / Old Yates Ford Road and SR 643 / Henderson Road in Clifton. On this section the speed limit is. In the morning rush hour when the majority of traffic is heading northbound along SR 612, much eastbound traffic turns right on SR 646, Maple Branch Road, while much westbound traffic stays on SR 612. The two roads become practically parallel, and both intersect with SR 645, Clifton Road, two blocks apart. In the evening rush hour, this traffic pattern is reversed. Both the concurrency with SR 645 and the concurrency with SR 643 have been designated as Virginia Byways. The SR 645 section was designated April 20, 1994, and Henderson Road was designated March 13, 2001.
Old Yates Ford Road (Fairfax County)
Old Yates Ford Road starts at the Y intersection mentioned above, and continues west toward the SR 612 Fairfax / Prince William Bridge. On this section the speed limit is.
Yates Ford Road (Prince William County)
When SR 612 empties from the bridge to Prince William County, the speed limit is raised to. It stays 2 lanes until just before an intersection with SR 663 / Davis Ford Road Then it becomes a 5 lane undivided road, with a center turn lane and two thru lanes in each direction. Most traffic headed toward Woodbridge turns on SR 663, as that road joins SR 294, the Prince William Parkway, as it heads east. SR 612 terminates at an intersection with SR 294. Turning left goes toward Woodbridge, while turning right goes toward Manassas. When Yates Ford Road is two lanes, the speed limit is. When Yates Ford Road is wider, the speed limit is.
History
Yates Ford
Yates Ford Road was known as early as 1716, for there are records that, on December 7, 1716, Lady Catherine Fairfax granted Wansford Arrington. One of the boundaries was described as "land along Bull Run from just north of Yates Ford Road to south along Bull Run to a peninsula". A few years later, on September 12, 1730, Richard Kirtling, Jr. was granted by Lord Thomas Fairfax, and this land was described as running "from Popes Head Run to just north of Yates Ford Road". Yates Ford also appears in Civil War history. According to Pennsylvania Cavalry. 3d Regt. William Brooke Rawle, Yates Ford was the scene of a battle. He describes Yates Ford as being "about a mile or so below the railroad bridge". Yates Ford can be found on the 1862 War Department Map, where its position is consistent with the present terminus of Birmingham Drive. http://www.davidrumsey.com/maps4020.html The original Yates Ford appears to be between Yates Ford Road in Clifton, at Hemlock Regional Park, and Birmingham Drive on theManassas Park / Prince William County border. Some of the old Yates Ford Road can still be seen on the Manassas side at the end of the easternmost end of Birmingham Drive, along the border of what is currently property owned by a rod and gun club, another property, and the river. The ford can also be found here by boating and repeatedly portaging along the river. In 1997 the original 30-year-old bridge crossing Bull Run was replaced by the Virginia Department of Transportation. There is another section of Yates Ford Road that is not a part of SR 612. It appears that this section is what led to the original Yates Ford before Hemlock Overlook Regional Park was created by the Northern Virginia Regional Park Authority. That section of Yates Ford Road is now a group of large single-family homes that are nestled against the boundary of the park.
Colchester Road
Colchester Road was originally a road leading from western Fairfax County through the Clifton area to the seaport of Colchester. Silt filled up the Occoquan River, making Colchester untenable as a seaport. The result for Colchester Road was that many different roads took its place, and the only part of Colchester Road left is the part in Fairfax / Clifton that is part of SR 612.
