The B9159 is a short road in Wick. Although previously thought to be defunct, it is still listed by the Highland Council as a classified road, and still marked on the OS online mapping top zoom level.
Starting on the A99 where it turns from Bridge Street into the High Street, the B9159 is the 'other', eastern arm of the High Street. However, we already have a problem, as this piece of the High Street is a pedestrian zone with limited one-way traffic, and that is not in our favour! At the further end, the route TOTSOs with an unclassified road, as it turns south across the Harbour Bridge, on the further side of which is a small roundabout with Martha Terrace. We turn left here and then swing southwards along Harbour Quay, following this shoreside road until we reach Wick's old Herring Mart, where the route terminates. About half way along, Bank Row heads west; this is the former route of the A8002.
Some maps show the entirety of the B9159 on the south bank of the river, using River Street and avoiding the Harbour Bridge and High Street; while possibly a more logical route, this is listed by the local authority as being the U3632 with the route through the High Street being confirmed as the current routing of the B9159 in the 20 mph urban speed limit plan for the town. (source) - (archive.org)