Highbeech is the name of the roundabout junction of the A48 and A466 situated three quarters of a mile south-west of Chepstow town centre.
The A48 (the Gloucester to Carmarthen road via Cardiff and Swansea) is classified as primary north-east of the roundabout.
The A466 runs from King's Thorn on the A49 about five miles south of Hereford to junction 2 of the M48. The section between Highbeech and the motorway is known as the Wye Valley Link and is a primary route.
The roundabout is subject to a 40 mph speed limit while all of its exit roads (other than the Wye Valley Link, which is NSL) are limited to 30 mph.