The Westlink road in Belfast, Northern Ireland is a dual carriageway throughpass, designated the A12, connecting the M1 to the M2 and M3 motorways which run south, north and east of the city, respectively.

Originally planned in 1964 as the Belfast Urban Motorway,[1] the route was to have been fully grade-separated and would have completely encircled the city centre.

Due to lack of money and public opposition only the western portion was completed and this was originally not fully grade-separated.

The Westlink has garnered much negative publicity over the years, owing to rush-hour traffic bottlenecks at its major intersections.

However, plans to upgrade this junction to a fully free-flowing interchange have progressed (as of 16 March 2016) to the point where the scheme has been tendered.