Poniel Interchange forms junction 11 of the M74. It gives access to the B7078, Happendon services and the A70 from the north, while junction 12 gives access from the south.
It was built in 1986-7 as part of the first southern extension of the M74 (see M74 and A74(M) History). It is very unusual for the way a dual carriageway gives way to a slip road. This is a consequence of its history: the dual carriageway was there because it had been the A74 mainline, but was no longer expected to carry heavy traffic, so it was dealt with in the cheapest practicable manner.