A75 road
The A75 is a primary trunk road in Scotland, linking Stranraer and its ferry ports at Cairnryan with the A74 at Gretna, close to the border with England and the M6 motorway.
Route
Heading west along the south coast of Scotland from its junction with the A74 motorway at Gretna it continues past Eastriggs, Annan, Dumfries, Castle Douglas, Gatehouse of Fleet, Newton Stewart, Kirkcowan and Glenluce before ending at Stranraer.The majority of the road is of single-carriageway standard, although a few short dual carriageway sections exist, including a one-mile section past Gretna, a section past Collin a two-mile section just west of Dumfries and a 1-mile section at Barlae.
There are also numerous three-lane overtaking sections which allow overtaking in one direction or on some occasion both directions. The road has recently been re-routed at Carrutherstown and a bypass has been constructed to avoid the village of Dunragit and the frequently struck Challoch Railway Bridge, which has earned the title of "most hit bridge in the UK."
There are only two service stations on the A75: one at Collin on the eastern edge of Dumfries, and one at Castle Kennedy to the east of Stranraer.
The road forms part of the international E-road, European route E18.
The majority of heavy goods vehicles which cross the short sea route of the North Channel via Cairnryan use the A75, with a much as 90% of HGV traffic using the A75.
In January 2020, Transport Scotland concluded a transport study of South West Scotland and outlined options for investment to the A75 and other trunk roads. In case of the construction of an Irish Sea Bridge from Great Britain to Northern Ireland, further road widening and potentially an upgrade to motorway status may be required.