The SW, Taunton M5
18
Avonmouth, Bristol Airport symbol (A4)

Change Route: M5 South

The M49 is unique in that it no junctions of its own. It meets the M4 at one end, the M5 at the other, and, er, that's it. And so, 5 miles from the M4, here's the first part of the M49/M5 junction.