New York City is ranked worst at both building and sustaining bridges, according to a new study that finds the city has more than half of its bridges in need of repair and reconstruction.
The study, which looked at bridges constructed and maintained between 1980 and 2012, found the city had about a quarter of its existing bridges in bad shape, or functionally obsolete.
“It’s not the infrastructure that is the problem.
It’s the infrastructure itself,” said Paul Mott, a transportation planner who co-authored the report with Michael Schulz, a professor at the University of California, San Diego.
Mott said bridges that are outdated are prone to break down, especially in places like the Bronx where the population is high.
“The bridge itself is not a bad thing,” he said.
“But the bridge itself needs to be built and maintained.”
Mott and Schulz examined bridges built between 1980 to 2012 in cities across the United States, as well as in Canada and Japan.
The report focused on bridges that were built before the 1990s and that are older than 20 years.
It also looked at other types of bridges and non-structural bridges, such as utility and maintenance bridges, roadways, street crossings, and culverts.
The analysis found that bridges built before 1980 were nearly 50 percent more likely to need repair and replacement than bridges built since 1980.
In addition, the study found that the infrastructure cost to repair and maintain a bridge more than doubled from 2010 to 2020, from $1.8 billion to $4.2 billion.
The report comes after a slew of bridges in the United Kingdom and elsewhere were struck by mysterious falls in recent years, including the London Eye bridge, the Great Western Bridge in Glasgow, Scotland, and the Dorking Bridge in Dorkington, Kent.
The bridge that was struck was structurally unsound and had to be replaced.
The researchers said they expect that many more bridges will be struck over the next decade or so.
“When a bridge falls, there’s usually an investigation and an investigation finds out why it fell,” Schulz said.
“So it’s a very rare thing.
But I think we will find that a lot of bridges have fallen.”