|Location Map ( geo)|
|From:||Pont Tal-y-bont (SH686416)|
|To:||Blaenau Ffestiniog (SH697465)|
|Distance:||3.7 miles (6 km)|
|Met (1923):||B4391, B4409, B4407|
|Now part of:||A496, A470|
|Route outline (key)|
The B4408 was a short B-road in the area of Blaenau Ffestiniog in northern Merionethshire.
In 1922 it started on the B4391 at Pont Tal-y-bont and headed north via Tanygrisiau and round the northern end of Blaenau Ffestiniog to end on the B4407 at Rhiwbrifdir. By the end of the 1920s the southern half of this had become a northern extension of the A496 and the northern section was unclassified, although it became the B4414 in 1935.
The B4408 was rerouted in the 1920s south of Blaenau Ffestiniog. From the new A496 at Congl-y-Wal it headed south along what was the B4407, crossing the B4391 in Llan Ffestiniog and ending on the A487 near Gellilydan. This entire section was renumbered A4108 before 1956.
Road numbers have changed since then. The original route of the B4408 is now mostly numbered A496, although the northern section is bypassed (the B4414 no longer exists) and the later route is now part of the A470.