Gadgirth Bridge carries the B742 across the River Ayr a short distance to the south of Mossblown in Ayrshire. It is an unusual twin span truss girder bridge, with the metal sections resting on stone abutments and a central stone pier, which is protected by a triangular cutwater. The roadway across the bridge appears to be just about wide enough for two cars to pass, but in recent years it has been hatched down to a single lane across the centre with priority to southbound traffic, a sharp bend on the south side reducing visibility on this approach. The bridge is also subject to a 7.5T weight limit, which is probably the main reason behind the single lane working. The bridge was built in 1908 by Alex Findlay & Co, bridge engineers from Motherwell.
