Proposed rules will require companies to provide safe passages for pedestrians and cyclists around construction sites.
Trains are single-tracking between East Falls Church and Ballston stations.
The bridge was temporarily closed because of police activity.
They don't have to in Idaho, and it may be safer not to.
Trains are no longer single-tracking outside Wheaton and Glenmont stations because of a track problem outside Wheaton station.
The Metropolitan Washington Airports Authority is converting 19 lanes that now take "exact change" into E-ZPass-only lanes over the next year.
DDOT has installed 7.5 miles of bike lanes this year, including the first bike lanes in Ward 8.
The Federal Highway Administration is postponing a decision on the Virginia Avenue Tunnel project until at least Sept. 15.
Police said three people were transported to the hospital after a 7:39 a.m. crash on the westbound side of the highway.
Some passengers on the Red and Orange lines will wait longer for trains this weekend.