From Roader's Digest: The SABRE Wiki
|Length:||10.3 miles (16.6 km)|
|Met:||B4399, B4391, A491|
|Now part of:||A495, B4389|
|Route outline (key)|
The B4394 was a short, rural B-road in Wales. It was renumbered in 1935 and became part of a southern extension of the A495.
By the 1940s the southern end of the new A495 was rerouted along a formerly unclassified road to reach Llanfair Caereinion from the west, so the remainder of the ex-B4394 was numbered as an extension of the B4389.