40 South Bridge Street, Airdrie

40 South Bridge Street in Airdrie is a classical bank building designed by J Smith in 1846. It is a two-storey, five-bay, rectangular structure with a gabled roof, constructed from yellow ashlar sandstone. The building features a columnar porch at the center, a base course, a dividing band between the first and second floors, and a dentil-moulded projecting cornice. The windows have cavetto moulded architraves.

On the principal elevation, there is regular fenestration with stone steps leading to a timber panelled door that includes a letterbox fanlight. Engaged Doric columns flank the entrance and support an entablature with a projecting cornice.

The rear elevation has a modern two-storey, three-bay addition. The north and south side elevations are obscured by closely neighboring buildings. The upper floor has plate glass sash and case windows, while the ground floor features fixed pane plate glass. The roof is covered with grey slates and lead flashing, and there are cast-iron rainwater goods.