Virginia State Route 645 (Fairfax County)

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State Route 645
Length: 15.46 mi (25 km)
Formed: 1948
West end: US 29 at Centreville
Major
junctions:
SR 620 near Clifton
SR 654 at Clifton
SR 658 at Clifton
SR 5590 at Clifton
SR 641 at Clifton
SR 643 near Clifton
SR 612 near Clifton
SR 610 at Makley's Corner
SR 123 near Burke
SR 7100 near Burke
SR 638 near Ravensworth
East end: SR 620 near Ravensworth
Virginia Routes
Primary - Secondary - History - Turnpikes

State Route 645 is a secondary state highway in southern Fairfax County, Virginia. It is the main road through the town of Clifton.

[edit] Speed limit

(From west to east)

  • From starting terminus to the town of Clifton, VA speed limit is 45 M.P.H.
  • In the town of Clifton, VA speed limit is 25 M.P.H.
  • From there until the junction with Ox Road speed limit 35 M.P.H.
  • After junction with Ox Road until second Rte. 643 junction speed limit is 40 M.P.H.
  • Until junction with Braddock Road; speed limit is 35 M.P.H. despite having four lanes