This 6 mile section of motorway provides an eastern by-pass of Glasgow. It joins the A8/M8 Glasgow motorway at the Baillieston interchange. This extensive four-level structure incorporates two interchanges and provides links between the M73 and M8 (Monkland motorway), the M73 and A8 and the M8 and A89. The whole interchange covers some 55 hectares and includes 21 concrete bridges. It was officially opened in April 1972 by the Rt. Hon. George Younger.