Credit: This photo was taken May 10, 1869, at Promontory Summit, Utah, to mark the beginning of transcontinental railway travel in the U.S.

America 250: Iconic 1869 photo marks moment U.S. railroads linked east and west

Metro will halt trains between Friendship Heights and North Bethesda this summer

ICE officers deployed at Dulles, as Trump tries to reduce screening lines during partial government shutdown

Will the 15th Street bike lanes get kicked to the curb?

America 250: How the internal combustion engine transformed modern warfare

Drivers face new lane closures on GW Parkway and Roosevelt Bridge during repairs