The spa town of Droitwich Spa has had historical importance for its brine for centuries. The romans built long 'saltways' which lead from the town in various directions; many of these are still well used with the A38 to Worcester and Birmingham as well as the B4090 towards Alcester. During the early 20th Century, the town was a major bottleneck on the A38 route to the South West; therefore a large dual carriagewaybypass was constructed which the A38 now uses. The M5 was then built in the 1960s which took traffic away from the town.
The town is served by two motorway junctions. During the 1991 widening works of the M5, J5 was redesigned and became a dumbbell junction; further improvements modified this junction in 2009.
The original A38 that once went through the town was re-designated as B4090. The remainder from the B4090 to the A38 was designated B4065.
Droitwich Spa was also the proposed start of a motorway that ran to Leicester, however this plan was shelved in the 1960s.