David McCullough Bridge
Backstory and Context
The first bridge on the site was the Mechanics Bridge, which was a covered, wooden structure that was completed in 1837 and was destroyed by fire in 1851. An open bridge was then built on the existing piers in 1854 for pedestrians and horse-drawn vehicles. This span was partially destroyed by a flood in 1865 and rebuilt as a toll bridge. Allegheny County later purchased the bridge in 1911 and eliminated the toll. However, this bridge was also destroyed by fire in 1918.
The city then contracted with Warren and Wetmore in order to design a new bridge in conjunction with the Pittsburgh Art Commission. The city sought a bridge that was “…beautiful as well as ornamental.” In other words, the city was of the belief that form and function should receive equal attention. To that end, the architectural firm, using the old piers, created a through-arch bridge that utilized a Warren truss design on its three arches. The bridge is 1,900 feet long, with its main span measuring 437 feet.
They also designed four massive stone towers, two at each end, that serve as portals and soar 62 feet above the bridge deck. Pedestrians crossing the span walk through arched openings in each tower that include carvings of what are thought to be Poseidon (or perhaps Neptune) and his wife. Atop each tower is a bronze sculpture designed by Italian-born sculptor, Leo Lentelli. Each sculpture features four winged seahorses (more Pegasus-like than an actual seahorse) and an armillary sphere encircled by the signs of the zodiac. Two of the sculptures still retain their oxidized green coloring while two became black in color after the oxidization had been removed and they were coated with lacquer in 1978.
The bridge underwent extensive renovations when it was closed for six months in 1981 when a new deck and expansion dams were installed. It was then closed for a year in 2002-2003 when it underwent a $9.8 million overhaul. The renovations included the replacement or repair of much of its structural steel, abrasive blasting, and a new, yellow coat of paint. In July of 2013, on David McCullough’s 80th birthday, the bridge was renamed to honor the man who was born and raised in the Point Breeze neighborhood of Pittsburgh. The Yale graduate has written such works as The Johnstown Flood in 1968 and The Great Bridge, about the design and construction of the Brooklyn Bridge, in 1972. He won the Pulitzer Prize for both Truman and John Adams.
Pitz, Marylynne. "The Bridges of Pittsburgh: David McCullough Bridge." Pittsburgh Post-Gazette. July 21, 2013. Accessed April 19, 2017. http://www.post-gazette.com/ae/art-architecture/2013/07/21/The-Bridges-of-Pittsburgh-David-McCulloug...
"16th Street Bridge/David McCullough Bridge." Historic Bridges. July 16, 2011. Accessed April 19, 2017. http://historicbridges.org/bridges/browser/?bridgebrowser=other/16th/
"Sixteenth Street Bridge." PGH Bridges. June 17, 1999. Accessed April 19, 2017. http://pghbridges.com/pittsburghE/0585-4478/16thst.htm
Gavin, Kevin. "Pittsburgh Bridge to be Named for David McCullough." 90.5/WESA. July 5, 2013. Accessed April 19, 2017. http://wesa.fm/post/pittsburgh-bridge-be-named-david-mccullough#stream/0