Greenfield Bridge

The Greenfield Bridge, officially known as the Beechwood Boulevard Bridge, was a concrete arch bridge located in Pittsburgh, Pennsylvania, United States. The bridge spanned the Parkway East (I-376) between the Greenfield and Oakland neighborhoods.HistoryThe Greenfield Bridge was originally constructed in 1921-1923. It was completed by December 1922, but some of the approaches still needed to be filled in. The final cost was $370,000.By the late 1980s, the bridge had begun to decay. In September 1989 debris from the bridge impacted cars, injuring three. By this point nets had been placed under the bridge. A city engineer said he suspected vandals may have thrown the concrete, but one of the drivers said they were watching the bridge after they were forced to stop and saw no one on the bridge.The decrepit condition of the bridge has "become a national symbol of infrastructure failure" in the United States, and its poor condition was featured on 60 Minutes and Last Week Tonight with John Oliver. A makeshift 'bridge under a bridge' was constructed to prevent any falling debris that evaded the old bridge's nets from crashing onto I-376.The bridge was imploded on December 28, 2015 at 9:20 am. The inbound side of I-376 reopened to traffic on the 31st, a day ahead of schedule. However, the outbound side suffered damage despite a protective layer of dirt placed under the bridge for the implosion and its reopening was delayed.New bridgeA replacement bridge is under construction and is set for completion in fall of 2017.