All lanes of I-495 south, Outer Loop, at Dulles Toll Road (Route 267) will be closed on Friday and Saturday nights, August 12-13, according to the Virginia Department of Transportation.
VDOT says it's for steel beam placement, part of the Capital Beltway High Occupancy Toll (HOT) Lanes Project Jones Branch Drive Connection. Should inclement weather cancel this work, it will be rescheduled for August 15-16.
Each night, starting at 9:30 p.m., one lane will close on I-495 south at Exit 45, Dulles Toll Road, progressing to a full roadway closure after 11 p.m. All lanes will reopen by 8 a.m.
Motorists will be detoured to Exit 45B, Dulles Connector Road (Route 267) east towards I-66 to Exit 19B, Chain Bridge Road (Route 123) south, stay right and follow detour signage back to I-495 south.
Police will be onsite directing traffic. Motorists should expect delays.The detour may add 15-20 minutes onto a trip during the peak overnight hour between 11 p.m. and midnight.
VDOT also warns that the Dulles Toll Road exit ramp to I-495 south will also close overnight and motorists will be directed to continue east on Dulles Toll Road and follow the above detour.