Glenloch Interchange is Canberra's only major interchange which connects Tuggeranong Parkway with Parkes Way, William Hovell Drive and Caswell Drive (Gungahlin Drive Extension). Following a major reconstruction lasting from 2007 to mid-2008, the interchange now operates without traffic lights. A surprising feature was the retention of an unused bridge from the previous alignment which led from the centre of the Parkes Way/Caswell Drive loop, passing east over two northbound roads, before petering out to the east.