Bridge 148 and Byles Lock

Bridge 148 and Byles Lock is a Grade II listed structure featuring a bridge with a lock chamber extending to the south from its abutments. The bridge has a single span with a brick arch and keystones, complemented by a chamfered blue brick string course and concrete copings. The deck slopes down to the east, where the ground level is lower. The parapets have splayed ends that terminate in piers topped with pyramidal copings. Steps lead down to the towpath on the east side, just north of the bridge.

The lock chamber is constructed of brick with sandstone copings and includes restored timber lock gates at both ends. The northern swing gates are connected to original cast-iron lined rebates by iron straps and feature a cast iron plaque dated 1979. The southern gate is attached by a bracket on the east side, with a cast-iron lined rebate on the west side. In front of the gates is a cast-iron trough with wooden stop planks set in cast-iron rebates. Additionally, the remains of a cast iron rack and pinion-operated gearing mechanism can be seen at the southern end, beyond the southern gate. A brick-lined overflow culvert is located on the west side of the lock, and a simple timber access way has been constructed over the lock to the south of the southern parapet.