What is "ironbridge"

Ironbridge is a village on the River Severn, at the heart of the Ironbridge Gorge, in Shropshire, England. It lies in the civil parish of The Gorge, in the borough of Telford and Wrekin. Ironbridge developed beside, and takes its name from, the famous Iron Bridge, a 30-metre (100 ft) cast iron bridge that was built across the river in 1779.