SCOTT SIMON, HOST:
Cars may be the least safe place to be during a tornado - and here's another unfortunate fact: chances are one in nine that the bridge you drive over has been deemed structurally deficient or basically in bad shape by the federal government. The collapse of the I-5 bridge in Washington state last month has renewed the focus on the deteriorating condition of the nation's infrastructure but there is no consensus on how to tackle the problem or pay for proposed solutions. NPR's Brian Naylor reports.
BRIAN NAYLOR, BYLINE: On Thursday, May 23rd, KCPQ TV in Seattle led the evening newscast with a dramatic story.
(SOUNDBITE OF TV NEWS BROADCASTS)
UNIDENTIFIED MAN: Following breaking news tonight. A bridge collapsed on I-5 over the Skagit River between Burlington and Mount Vernon, sending cars plunging into the water.
UNIDENTIFIED WOMAN: This is a developing situation right now. Three rescue boats and some private vessels are on the scene taking a look right...
NAYLOR: Just to be clear, the I-5 bridge was not one of the nearly 67,000 bridges across the nation deemed structurally deficient. It was, however, on a somewhat larger list of bridges determined to be functionally obsolete, meaning it was designed to meet earlier, older engineering standards. Its traffic lanes were narrower than current requirements and its overhead clearance lower. Barry LePatner, a New York real estate and construction lawyer, says the bridge was also fracture-critical.
BARRY LEPATNER: Fracture-critical means it was designed cheaply and quickly in the '50s, and many others in the '60s and '70s, so that there was no redundancy. If one piece breaks on the entire bridge, the bridge goes straight down because there is no other structural support within the bridge to hold the bridge up.
NAYLOR: In that way, LePatner says, the Washington bridge is like the bridge on I-35 in Minneapolis that collapsed in 2007, killing 13 and injuring more than 100. LePatner is author of "Too Big to Fall," about the nation's failing infrastructure. What happened in Washington and Minneapolis, he says, is a harbinger of what might happen to thousands of other bridges in the nation.
LEPATNER: When you combine those poor bridges that must have traffic limited on them because they can't support the weight as originally designed, and you combine that with a fracture-critical design, that is a bridge that if one member falls the entire goes down, we have a very toxic combination that imperils the travelling public.
NAYLOR: LePatner says for decades the nation has starved its roads and bridges. The federal gas tax, which provides the bulk of the funding for the Highway Trust Fund, hasn't been raised in two decades. And the trust fund which pays the federal share of road and bridge construction is expected to go broke next year. President Obama has called for spending $50 billion to pay for bridge and road construction, as well as setting up a national infrastructure bank, an idea that's gained little traction so far in Congress. Democratic Congresswoman Janice Hahn of California says infrastructure spending provides a good return on investment.
REPRESENTATIVE JANICE HAHN: We know that this will create jobs. We know it will put people to work. It will improve the efficiency of our nation's transportation system and it's going to be worth the investment.
NAYLOR: Hahn has called for hearings on the Washington bridge collapse as a way to raise awareness of the infrastructure problem. While Congress has been gridlocked, states have been trying their own solutions to funding bridge and road repairs. Some have raised their own gas taxes; others like Massachusetts and Colorado have authorized increased borrowing. Charlie Chieppo of Harvard's Kennedy School of Government says this is a good time for bridge building, or rebuilding.
CHARLIE CHIEPPO: Yeah, borrowing costs are low, and although this is starting to change now, construction prices are relatively low and construction inflation is relatively low. The sense is that that is going to change or is already starting to change. So, I think the window is closing on that.
NAYLOR: Spending by all levels of government on bridges totaled more than $28 billion last year, according to the American Road and Transportation Builders Association. Still, the Federal Highway Administration estimates it will take an extra $20 billion a year over the next 16 years to bring all the nation's bridges up to standard. Brian Naylor, NPR News, Washington.
NPR transcripts are created on a rush deadline by a contractor for NPR, and accuracy and availability may vary. This text may not be in its final form and may be updated or revised in the future. Please be aware that the authoritative record of NPR's programming is the audio.