A466 road about long and runs through the counties of Herefordshire and Gloucestershire in England, and Monmouthshire in Wales. It runs south from Kingsthorne, on the A49 south east of Hereford to Monmouth, crossing the A40. After crossing the River Wye at the Wye Bridge, Monmouth and Bigsweir Bridge near Llandogo, it follows a picturesque route south down the Wye valley through Tintern and Chepstow to the M48 motorway at junction 2. The road crosses the border between England and Wales at three places along its length: at Buckholt, Redbrook, and Bigsweir. It runs through an Area of Outstanding Natural Beauty, and
Old Wye Bridge, Chepstow Old Wye Bridge, Chepstow The Old Wye Bridge or Town Bridge at Chepstow crosses the River Wye between Monmouthshire in Wales and Gloucestershire in England, close to Chepstow Castle. Although there had been earlier wooden bridges on the site since Norman times, the current road bridge was constructed of cast iron in 1816 during the Regency period, by John Rastrick of Bridgnorth, who greatly modified earlier plans by John Rennie. The bridge crosses a river with one of the highest tidal ranges in the world. It carried the main A48 road between Newport and Gloucester until 1988, when a new