Viaduct Leading to North Parade Bridge, with Associated Lodges

The viaduct leading to North Parade Bridge, built in 1836, features two associated tollhouses. It was designed by engineer William Tierney Clarke, with the tollhouses possibly created by Edward Davis. The structure is made of limestone ashlar and has Welsh slate roofs on the tollhouses.

The viaduct consists of five semicircular arches with console keyed heads, a platband, and a parapet wall, which may have been added later. Only the first arch is open, while the others are walled in and slightly recessed from the face of the viaduct. It connects the embankment at the east end to the level of North Parade Bridge, which was built to align with the existing North Parade.

The two former tollhouses are located on either side of the roadway at the junction of the embankment and the viaduct. They are designed in a Jacobean style with a one-room plan, standing one storey and an attic high, with a cellar below the roadway. The tollhouses are symmetrical but mirror each other. Each features an arched doorway with a pedimented head and a roundel in the gable, facing the road. They also have tripartite oriels with pediments, each light containing four panes, and pilasters styled as Jacobean balusters. A coat-of-arms is displayed in a cartouche above the gable, which has a pierced segmental pediment. The elevation repeats along the embankment, with another oriel on the side away from the road, which also has a gable and a small chimney above. The bases of the tollhouses feature horizontal rustication below the road level.

This viaduct is noted as an elaborate piece of civic improvement and is recognized for its use of the emerging Tudorbethan style in its architectural design.