Bridge workers under suspension bridge. The Humber Bridge, UK was built in 1981 and at the time was the world's largest single-span suspension bridge

Portrait of worker on suspension bridge. The Humber Bridge, UK was built in 1981 and at the time was the world's largest single-span suspension bridge

Bridge workers inspecting suspension bridge cables. The Humber Bridge, UK was built in 1981 and at the time was the world's largest single-span suspension bridge

Bridge workers on top of suspension bridge. The Humber Bridge, UK was built in 1981 and at the time was the world's largest single-span suspension bridge

Bridge workers and support truck under suspension bridge. The Humber Bridge, UK was built in 1981 and at the time was the world's largest single-span suspension bridge

Bridge worker on cable of suspension bridge. The Humber Bridge, UK was built in 1981 and at the time was the world's largest single-span suspension bridge

View from the top of suspension bridge. The Humber Bridge, UK was built in 1981 and at the time was the world's largest single-span suspension bridge

Bridge workers on beach under suspension bridge. The Humber Bridge, UK was built in 1981 and at the time was the world's largest single-span suspension bridge

Bridge workers on top of suspension bridge. The Humber Bridge, UK was built in 1981 and at the time was the world's largest single-span suspension bridge

Bridge workers walking on cable of suspension bridge. The Humber Bridge, UK was built in 1981 and at the time was the world's largest single-span suspension bridge

View of the top of suspension bridge. The Humber Bridge, UK was built in 1981 and at the time was the world's largest single-span suspension bridge

Bridge workers inspecting engineering plans for suspension bridge. The Humber Bridge, UK was built in 1981 and at the time was the world's largest single-span suspension bridge

Civil engineers using torch to inspect cable anchorage in suspension bridge. The Humber Bridge, UK, built in 1981 was the world's largest single-span suspension bridge

Civil engineers in discussion in suspension bridge, high angle view. The Humber Bridge, UK, built in 1981 was the world's largest single-span suspension bridge

Toll booths at Humber Bridge. Built in 1981, the bridge was then the world's largest single-span suspension bridge