B4066 (Tetbury - Cambridge)
|Distance:||12.9 miles (20.8 km)|
|Met:||A433, A434, A46, B4063, B4065, B4064, A38|
|Now part of:||A4135|
|Route outline (key)|
The original B4066 ran between Tetbury and Cambridge in Gloucestershire, and was upgraded to the A4135 around 1930. The route has basically stayed the same, with the exception of the northern end which has been rerouted to the south of Cambridge, presumably as the M5 severed the road's original line.
The current B4066, which was in place by 1932, crosses this route at Dursley.