Subway related: Northbound Dolley Madison Boulevard (Route 123) Closed at Dulles Connector Road (Route 267) Overnights Dec. 7-10 for Overhead Truss Work

All lanes of northbound Route 123 at the Dulles Connector Road will be closed overnights Tuesday, Dec. 7 through Friday, Dec. 10, 11:00 p.m. through 5:00 a.m. as crews begin the next span of the aerial bridge in the Dulles Connector Road median.

Traffic will be detoured to turn right on Anderson Road, left on [Old] Chain Bridge Road, then left on Great Falls Street to rejoin the northbound lanes of Route 123.

This closure is expected to continue overnights as needed over the next two to three weeks. Police will be onsite for motorist safety.

HOT Lanes Related: Motorists traveling during the overnight hours on I-495 south from Tysons Corner to Springfield may want to consider alternative routes from Dec. 5.11.  Lane closures and detours will cause delays from 30-60 minutes.  along the Beltway at Leesburg Pike (Route 7), I-66, Gallows Road (Route 650)

495 south at I-66: Each night Sunday, Dec. 5 through Saturday, Dec.11 from 9:30 p.m.-5 a.m., crews will close all lanes of I-495 south at I-66 for bridge demolition. Motorists will be detoured to Exit 49, I-66 west, to Nutley Street, follow detour signage around to I-66 east, back to I-495 south.

I-495 south at Leesburg Pike (Route 7): Each night Wednesday, Dec. 8 and Thursday, Dec. 9 from 11:30 p.m. to 5 a.m. crews will close all lanes of I-495 south at Route 7 for steel bridge beam placement. Motorists will be detoured to Exit 47A, Route 7 west, cross over onto Route 7 east, back to I-495 south.

I-495 North and South at Gallows Road (Route 650): Each night Monday, Dec. 6 through Saturday, Dec.11, from 9:30 p.m.-5 a.m., crews will close three lanes of I-495 north and south with temporary Beltway stoppages for up to 30 minutes after midnight at Gallows Road for steel bridge beam placement.

This work is part of the Capital Beltway High Occupancy Toll (HOT) Lanes Project