The South Brent bypass opened in 1974 and the Ivybridge bypass in 1973, both on new alignments. The A38 passes Endsleigh Garden Centre, which used to have direct access from the dual carriageway, although since the early 2000s this has been closed and the garden centre is accessed from the Westover junction for Ivybridge. After Ivybridge, the route roughly parallels the original route, bypassing the village of Lee Mill which is now home to a large trading estate. The road widens to a three-lane dual carriageway for the Plympton bypass. This opened in 1971 and was the first section of the Devon Expressway to be built on a new alignment, as well as being the first sizeable dual carriageway section of the route. The route originally ended at the Marsh Mills roundabout, which when opened was the largest in Europe.