|To:||Much Wenlock (SO620997)|
|Length:||6.6 miles (10.6 km)|
|Old route now:||A4169|
|Route outline (key)|
The B4378 is a short rural road in central Shropshire.
The route starts on the B4368 in Corvedale, to the south of Shipton, and heads northeasterly through the village before slowly climbing out of the valley. After going through Bourton it reaches a summit and then descends again into the town of Much Wenlock. It ends here at a T-junction on the A458.
The original southern end of the B4378 was on the B4376 in the centre of Much Wenlock, at the northern end of St Mary's Road (quickly moved to the northern end of the High Street). Our road left town along Shineton Street and then continued roughly northwards via Farley to cross the River Severn and end on the B4380 in Buildwas. Later, following the construction of Telford New Town, the entire original section of the B4378 became part of the A4169, to facilitate traffic movement around Telford. A hint of the original road system can be seen in the A4169's TOTSO at the original northern end of the B4378.