There are many unique bridges over the River Cam in central Cambridge. Walking around the city this July I only had a few hours in the city. This is mathematical bridge. A wooden footbridge between Queen’s College and St Catharine’s College. Two central campuses of the world famous University of Cambridge. Wooden Bridge is the bridge’s offical name. Designed and built in 1749. It has since been rebuilt twice. Most recently in 1905 and has kept it’s original design.