Another question: are trucks going to/from Dulles allowed to use I-66 to the Airport Access Road like non-HOVs are?
No. No trucks over 10,000 pounds gross vehicle weight on I-66 between the Rosslyn Tunnel (North Lynn Street) and I-495 - and no trucks over 10,000 pounds gross vehicle weight on the Dulles Connector Road. Eastbound on the Dulles Access Road, there is signage telling trucks to exit at the last slipramp exit to Va. 267 just prior to the I-495.
Post Merge: December 13, 2011, 10:27:40 PM
Street view shows signs telling motorists they can go 110 NB to US 29 via I-66 without worrying about HOV but there are oddly no signs that I could find on street view telling trucks they had to do the same.
There were also no signs on 66 EB at the 110 SB ramp saying trucks must follow 110, should any have gotten onto 66 from 29.
Trucks (mostly "local" trucks, as in trash trucks, dump trucks and locally-based delivery trucks, including tractor-trailer combinations (usually belonging to grocery store chains)) all know this route.
VA 110 is definitely not on the VDOT truck exclusion list linked above.
For some time after the 09/11 attack on the Pentagon, there were no trucks allowed on Va. 110 between Va. 27 and I-395, but since 110 was re-routed away from the Pentagon, that restriction has been lifted.
NO TRUCKS signs are more prevalent at entry points to the Memorial Bridge.
Probably because the Arlington Memorial Bridge is under jurisdiction of the National Park Service. U.S. Park Police vehicles (cars and motor units) frequently sit at the east end of the bridge (on the west side of the Lincoln Memorial) and will stop and ticket trucks crossing the bridge in either direction. I don't know what the law says, but they generally ignore trucks up to 10,000 pounds GVW, even if they have commercial markings. Buses (WMATA, PRTC and all sorts of private charter and tour buses) are allowed on the Memorial Bridge.
Post Merge: December 31, 1969, 06:59:59 PM
Getting into fictional land, it would seem that a US 50 Truck should be posted along US 29/I-66/E Street Expressway/Virginia Avenue.
The perfect U.S. 50 truck would diverge from U.S. 50 proper at 15th Street and Constitution Avenue, N.W. and follow U.S. 1 south (back to 14th Street), across the 14th Street Bridge, then south on I-395 to Va. 236 (Duke Street/Little River Turnpike).
Then west on Va. 236 to the City of Fairfax, and north on Pickett Road (past the large petroleum tank farm) back to U.S. 50.