Tag Archives: Allegheny County
20160625. Follow the seam into Pittsburgh’s Point State Park..
20160412. Under Pittsburgh’s Interstate 579, a younger and cleaner elevated expressway than Toronto’s Gardiner.
20160409. The Portal Bridge to Pittsburgh’s Point State Park.
20160408. A pyramidal view of Pittsburgh’s United Steelworkers Building. Curtis & Davis, 1963.
The exterior diamond lattice of steel provides form and function. With such a load-bearing exoskeleton and a solid central core, no interior columns are needed providing large open interior spaces.
20160405. Crossing Pittsburgh’s Monongahela River on a Port Authority of Allegheny County LRV.
20160402. The Three Sisters of Pittsburgh.
These three self-anchored suspension bridges span the Allegheny River in downtown Pittsburgh. From front to back they are the Roberto Clemente Bridge, the Andy Warhol Bridge and the Rachel Carson Bridge.
Built from 1924 to 1928, they are the only trio of nearly identical bridges, as well as the first self-anchored suspension spans, built in the United States.