Ledgard BridgeLedgard Bridge crosses the River Calder in Mirfield, West Yorkshire, England. It was built in 1800 as a replacement for an earlier bridge in the same location and is a Grade II listed structure.HistoryThe first bridge to cross the River Calder in Mirfield was a wooden structure built in 1303. This was replaced many times, one earlier stone bridge being named as Ledger Bridge on a 1773 map of the West Riding of Yorkshire. The 1800 bridge survived the great flood of 20 September 1946 which caused much damage along the whole valley.