The A39 is an A road in south west England. It runs south-west from Bath in Somerset through Wells, Glastonbury, Street and Bridgwater. It then follows the north coast of Somerset and Devon through Williton, Minehead, Porlock, Lynmouth, Barnstaple, Bideford, Stratton, Camelford, Wadebridge and St Columb Major. It then joins the route of the A30 road for around five miles, re-emerging near Zelah to head for the south Cornish coast via Truro and Falmouth.
In Cornwall and North Devon (until the junction with the A361 "North Devon Link Road"), the road is known as the Atlantic Highway, and was classified as a trunk road until 2002.
In 1899 a 10 ton lifeboat was somehow manoeuvred down this hill using 20 horses, after an epic overland journey from Lynmouth. Porlock was the only safe harbour from which to launch, such were the storm conditions, and the endeavour enabled 13 seamen to be rescued.
There is a less steep toll road that small vehicles and cyclists can take as an alternative route. It formed part of the route in the 2007 Tour of Britain cycle race.
It is so called, as it is the main road (it was a trunk road until 2002) from mid-Cornwall to North Devon and follows the line of the Atlantic Ocean's coast. It is also named thus due to the former Southern Railway express that ran in this part of North Devon and North Cornwall (the Atlantic Coast Express). Views of the Atlantic can be seen along its length, although the road does not approach very close to the coastline itself.
The road is signified as the Atlantic Highway by road signs indicating the route mileage throughout its length, in both directions, in white on brown above the green background of the route mileage boards.
It passes by Wadebridge, Bude and Bideford, and directly through Camelford.