A390 road

UK road routebox
road= A390
length-mi=
length-km=
direction= North West - South East
start= Tavistock
destinations=
end= Blackwater
construction-date=
completion-date=
junctions= ukroadsmall|386
ukroadsmall|388
ukroadsmall|38
ukroadsmall|3082
ukroadsmall|391
ukroadsmall|3058
ukroadsmall|3078
ukroadsmall|39
ukroadsmall|30
ukroadsmall|3075|

The A390 is a road in Cornwall and Devon, England. It runs from Tavistock to 5 miles north west of the city of Truro. Starting in Tavistock, it heads south-westwards towards Liskeard, crossing over the River Tamar and into Cornwall, then through Gunnislake and Callington. Immediately before Liskeard, it merges with the A38 north of the town. It diverges from the A38 at Dobwalls, where it then runs in a south-westerly direction to Truro via Lostwithiel, St. Blazey, and St Austell. It then forms a loop, and bypasses Truro City Centre. It then heads north west out of the city, where it forms the main corridor into Truro from the west. It passes the Royal Cornwall Hospital and through the suburb of Threemilestone, before linking up with the A30 road at Chiverton Cross, where the A390 terminates.
It forms part of the main route (the Truro to Dobwalls section) from Truro to Plymouth, although after a severe accident in Lostwithiel in 1999 heavy goods vehicles are diverted from it at the top of Edgcumbe Road, Lostwithiel.

By far the busiest section of the road is between Truro City Centre and Chiverton Cross, where it carries through traffic to West Cornwall,as well as commuting traffic to and from Truro, and traffic for the Royal Cornwall Hospital, Truro College and the Richard Lander School. There are many residential new housing estates in this area which have created further traffic.
The section from Truro College heading into Truro from the west also includes a bus lane and some dual carriageway sections.