The first Cross Keys Bridge was completed before the waters of the River Nene were turned into the new outfall. The Stamford-Mercury reported that the bridge was finished on the 16th April 1830. It was designed by Sir John Rennie, who also built the Cross Keys embankment. It was built of oak and had a moveable cast iron centre of 52ft span. The toll-house which stood at the east end of Rennie's bridge survives as a private house. The bridge was replaced in 1850 by the second Cross Keys Bridge, located approximately 100ft to the south, and used to carry both road and railway traffic (see MLI20480). {1}{2}