|Location Map ( geo)|
|Distance:||8.1 miles (13 km)|
|Meets:||A8, B7054, B786, A761|
|Old route now:||A761, B789|
|Route outline (key)|
The B788 is a cross-country B-road in west Renfrewshire.
It starts at traffic lights on the A8 opposite Victoria Quay in central Greenock. It heads south along Dellingburn Street, which is dual-carriageway until the road goes under the Inverclyde Line. The road then climbs Baker Street before it TOTSOs left at traffic lights, with the B7054 continuing ahead. There is another TOTSO right shortly afterwards and the road continues climbing away from the Firth of Clyde. It goes over the mouth of a tunnel on the other branch of the Inverclyde Line, with Whinhill station just to the west.
After running through the Strone area of town the road reaches open country. There are excellent views to the left over the Clyde and the hills of Dunbartonshire. Eventually, however, the road bends to the right, turning away from the coast and onto the moors. It passes Knocknair'shill Reservoir before descending to Auchenfoyle, where it crosses the Gryfe Water. The road does not remain in the valley, however, as it climbs out the far side before following the valley of a tributary for a mile or so.
The road then climbs out of this valley as well, on the same side as it entered. It heads eastwards over the hills before descending to the B786, which has priority at the crossroads. The road continues to descend and crosses the River Gryfe once more. It then goes under a disused railway bridge before ending at a T-junction on the A761 to the south of Kilmacolm.
Originally the B788 continued to the right via Bridge of Weir to end on the original line of the A737 on the far side of Johnstone, although this section was renumbered to what it is today later in the 1920s. Most of the road to Johnstone is now the A751 whilst the final section through Johnstone itself is the B789.