5.9k Share this
HARRISBURG, Pennsylvania — Video footage from a bus of the bridge collapse in Pittsburgh this year shows one end of the structure had already fallen when an expansion joint at the other end was pulling apart, federal investigators said Thursday.

The National Transportation Safety Board issued an update on the Fern Hollow bridge collapse, saying the video is giving them more information about the sequence of events.

So far there’s no evidence of “widespread deficiencies” in the “rigid K-frame superstructure types” that form the bridge’s basic structure, the report said.

The investigative update said that all aspects of the disaster are still being looked at and that the cause has yet to be determined. Investigators plan mechanical and chemical testing on material samples and will examine plate dimensions and weld quality.

RELATED: 10 injured in Pittsburgh bridge collapse; Human chain formed to help rescue people from bus

A preliminary report issued less than two weeks after the Jan. 28 collapse had found the collapse began at the structure’s west end and noted there had been no primary fractures in sections of welded steel girders considered “fracture critical.” A fracture critical area in a beam is the part most likely to show damage if the bridge has suddenly given way.

When the Forbes Avenue bridge gave way, it sent a city bus and four passenger cars down some 100 feet (30 meters) to a ravine carved by Fern Hollow Creek. Another vehicle drove off the east bridge abutment and landed on its roof.

Although the preliminary report had said a total of 10 vehicle occupants had been injured, the agency has now concluded that there were nine people in six vehicles. Two were injured seriously, two had minor injuries, four were not hurt, and the injury status of one person is uncertain, the agency said Thursday. No one was killed.

Natural gas lines ruptured and required the evacuation of nearby homes.

The 447-foot-long (136-meter) bridge, about 50 years old, showed some deterioration during an inspection in September, but not enough to require its closure. The bridge has had a 26-ton (24,000 kilogram) weight limit since 2014.

The future of the bridge is the topic of a virtual meeting Thursday night in which city officials and neighbors are expected to participate.

The Pennsylvania Department of Transportation has said up to $25.3 million in National Highway Performance Program funds is being used to rebuild the structure. The contractor began gearing up for construction last month, and early foundation work is about to begin, PennDOT spokesperson Alexis Campbell said Thursday.

The state agency has posted images of the replacement bridge’s “overall design concept.”

Copyright © 2022 by The Associated Press. All Rights Reserved.

Source: This post first appeared on abc7NY

5.9k Share this
You May Also Like

EXCLUSIVE – Biden Concessions to Venezuela, Cuba Regimes Frustrate, Baffle Hispanics

The administration of President Joe Biden, both formally and via anonymous reports,…

Pennsylvania’s Closing Arguments; Baby Formula Crisis and Buffalo Blame with Rep. Elise Stefanik

Host Alex Marlow begins today’s podcast with some thoughts on his interviews…

Kamala Harris Resumes Diplomatic Trail: Leading U.S. Delegation to UAE Following Death of Emirati President

Vice President Kamala Harris will return to the world stage as the…

Wayne Rooney is likened to Henry VIII as Twitter users poke fun at wife’s Wagatha Christie libel war

Off with her head! Twitter user jokes bearded Wayne Rooney looks like…

Musk says Twitter deal at lower price is ‘not out of the question’

Elon Musk on Monday fueled speculation he could be seeking to negotiate…

Victoria Beckham says ‘it’s an old-fashioned attitude, wanting to be really thin’

Victoria Beckham insist wanting to be thin is an ‘old-fashioned attitude,’ after spending…

Doctor Who casts transgender actress Yasmin Finney to play Billie Piper’s companion role as Rose

Trans actress to be Doctor Who’s sidekick: Yasmin Finney will play the…

Joe Biden Condemns Buffalo Shooting as a ‘Racially Motivated Act of White Supremacy and Violent Extremism’

President Joe Biden reacted to the mass shooting in Buffalo, New York,…