More than 50,000 bridges across the U.S. are falling apart and endangering drivers, according to a new report.
NBC News found cases from Florida, Georgia, Michigan and other states where pieces of crumbling bridges broke off and fell to the roadway, sometimes hitting vehicles.
In Utah, driver Mike Peterson escaped serious injury when a chunk of a bridge smashed through his windshield as he drove underneath.
"Another six to eight inches, you might not be talking to me today," said Peterson.
Unique bridges from around the world
Unique bridges from around the world
Spain, Biscay, Basque Country, Steps to the San Juan de Gaztelugatxe, chapel on a rocky island
Rolling bridge Paddington Basin, London UK. (Photo by Photofusion/Universal Images Group via Getty Images)
Worlds highest and longest glass Bridge as of 2016 in Zhangjiajie, CHunan, China
Si-o-se Pol (Persian bridge) or bridge of 33 Arches, also called Allah-Verdi Khan bridge, one of eleven bridges of Isfahan, Iran.
HALSTEREN, THE NETHERLANDS - UNDATED: The 'Moses Bridge' constructed over a 17th century moat and fortress in Halsteren, The Netherlands. Dubbed the Moses Bridge, this incredible structure literally splits the water way to allow people across. The Biblical feature in Halsteren, in the Netherlands was created to allow visitors access to a 17th century fortress. However, designers RO&AD were charged with creating a feature that did not ruin the original look of the castle's moat. So inspired by Moses, who split the Red Sea to allow the Israelites to flee the advancing armies of the Egyptian Pharoah, they created the 'invisible' bridge. 'Its construction is entirely made of wood, waterproofed with foil,' said Ad Kil, a spokesperson for RO&AD. 'The bridge lies like a trench in the moat, which is shaped to blend in with the outlines of the landscape.' A pump has been integrated into the sunken bridge to stop water flowing into the cavity and stopping it from flooding. PHOTOGRAPH BY RO&AD/ Barcroft USA /Barcoft Media via Getty Images
SPAIN - 2006/10/26: The Puente Nuevo, a bridge over the El Tajo gorge and Rio Guadalevï¿½, spanning the gorge in the historic city of Ronda in the Spanish province of Malaga in Andalusia, Spain. (Photo by Wolfgang Kaehler/LightRocket via Getty Images)
The bridge connects Middlesbrough on the south bank of the River to Port Clarence on the north bank. It is a transporter bridge, carrying a moving cradle or gondola suspended from the bridge, across the river in 90 seconds. The gondola can carry 200 people, 9 cars or 6 cars and one minibus.
Henderson Waves is pedestrian bridge, Singapore.
Panorama-Blick vom 700 Meter hohen Berg auf Hï¿½gebrï¿½cke 'Sky-Bridge' ('Himmelsbrï¿½cke') mit Besuchern und dahinter Meer Adamanen-See, Insel Langkawi, Provinz Pantai Tengah, Malaysia, Asien, Inseln, Reise, NB, DIG; P.-Nr.: 1836/2011, 25.11.2011; (Photo by Peter Bischoff/Getty Images)
Canal barge crossing Telford's Pontcysyllte viaduct, near Llangollen, Wales. (Photo by Universal Images Group via Getty Images)
Night view of the Infinity Bridge, a public pedestrian and cycle footbridge across the River Tees in the borough of Stockton-on-Tees in the north east of England.
Dragon bridge cross Han river with reflection at Danang city, Vietnam in August 15th 2014
GATESHEAD, ENGLAND - JUNE 21: The Millennium Bridge opens as part of the opening ceremony for the European Athletics Team Championships at the Quayside on June 21, 2013 in Gateshead, England. (Photo by Stu Forster/Getty Images)
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Using government data, the American Road & Transportation Builders Association compiled a report showing that 54,259 American bridges are "structurally deficient."
So many bridges are in need of repair, says the report, that if placed end-to-end they'd stretch nearly from New York City to Miami. And experts say that at the current rate of repair or replacement it would take 37 years to fix all the bridges.
"It really comes down a failure of leadership in Congress to address some of these issues and provide additional funding," said Dr. Alison Black, author of the ARTBA report.
President Trump is expected to address the country's aging infrastructure during his State of the Union address Tuesday night.
In 2016, NBC National Investigative Correspondent Jeff Rossen inspected a Washington, D.C. bridge with Charles Borders, a transportation branch chief with the National Park Service.
"There is metal literally peeling right off of it," said Rossen as he looked at the underside of the structure.
"Look at this flange right here, paper thin. This is all that's left," said Borders.
"This is what's holding up the roadway?" asked Rossen.
"This beam is holding the bridge up," confirmed Borders. "This is the support for the entire bridge. Just completely rusting away."
That bridge has not been fixed.
Late Monday, an official from the Federal Highway Administration told NBC News in a statement, "ARTBA's report, which relies on data from FHWA, underscores the need for investment in our nation's infrastructure. It also highlights the importance of streamlining the permitting process, so that the projects that are funded can move forward without undue delay. The Department of Transportation looks forward to continuing our work with state and local interests to revitalize the nation's roads and highways, offering improved safety, new jobs, and a better quality of life for the American people."