Humber Bridge | How to Stop a Colossal Bridge Corroding

A decade ago, engineers found the Humber Bridge had the same problem as many of the world's suspension bridges: unexpectedly fast corrosion. Here's how they fixed it, and how they're checking that it's staying fixed.

The Humber Bridge is a suspension bridge that spans the Humber estuary, connecting Hessle on the north bank to Barton-upon-Humber on the south bank in the East Riding of Yorkshire, England. When it opened in 1981, it was the longest single-span suspension bridge in the world, a title it held until the completion of the Akashi Kaikyō Bridge in Japan in 1998.

The bridge has a total length of 2,220 meters (7,283 feet) and a main span of 1,410 meters (4,626 feet). The height of the bridge towers is 155.5 meters (510 feet) above high water, and the clearance below the bridge is 30 meters (98 feet) at high water.

The construction of the bridge began in 1972 and took nine years to complete, with a total cost of £98 million. The Humber Bridge is an important transport link between the East Riding of Yorkshire and North Lincolnshire, with approximately 120,000 vehicles crossing it every week.

The Humber Bridge has also become a popular tourist attraction, with a visitor center on the north bank offering information about the bridge's history and construction, as well as scenic walks and cycling routes along the surrounding countryside.

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