|Location Map ( geo)|
|From:||Charlestown, Weymouth (SY657790)|
|To:||Rodwell, Weymouth (SY675786)|
|Via:||Chickerell Road (east)|
|Distance:||1.2 miles (1.9 km)|
|Meets:||B3156, B3158, A354|
|Route outline (key)|
The western section of the road was originally numbered B3157 and remained so until at least the 1970s but then spent some years unclassified before construction of the Weymouth Relief Road brought about an increase in Class II road mileage in the area.