|Distance:||4.9 miles (7.9 km)|
|Meets:||B1238, B1239, B1362, A1033|
|Route outline (key)|
The B1240 is a rural B-road to the east of Hull.
It starts on the B1238 in Sproatley and heads south. It meets the B1239 on the northern edge of Preston before going through the village and reaching Hedon soon afterwards. Originally the B1240 ended in Hedon but when the town was bypassed in 1990 the road was extended most of the way to Thorngumbald to reach the new bypass. This road was originally the B1241 but soon became the A1033.
On arrival in Hedon the B1240 reaches a one-way system, with southbound traffic running along Station Lane and northbound traffic using the parallel Soutter Gate. Halfway along the route the B1362 heads off to the east and there's a one-way link road to access that from Soutter Gate. Both the northbound and southbound routes of the B1240 reach Fletcher Gate, the old A1033; this is now numbered B1362 to the west whilst to the east the B1240 TOTSOs and takes over its route.