21. Grade separated junction at Hirwaun Ponds. (Site Plan No. 11).
Four routes to connect the eastbound and westbound carriageways of the main new trunk road with a roundabout to be constructed as part of the highway to be provided for in associated side roads Orders, in the vicinity of the existing roundabout at Hirwaun Ponds (the new trunk roads along these routes being given the numbers 45, 46, 47 and 48 on the deposited plan at site plan 11).