|Location Map ( geo)|
|Distance:||1.8 miles (2.9 km)|
|Route outline (key)|
The explanation is that the old A7 through Canonbie became an extension of the B720 when the bypass was built in 1984, but then part of the route was closed to traffic. They therefore added a 1 to the remaining B720 section from Canonbie south to the A7. Logical?
The closure of the section of the B720 north of Canonbie came about as the result of a landslip between Gilnockie Bridge and Byreburnfoot Bridge in late-1985, 18 months after the Canonbie bypass opened. The landslip removed part of of the northbound carriageway, which fell into the River Esk; the road was subsequently stopped-up and the southbound carriageway turned into a footpath. The official stopping-up order for the permanent closure of the road to through traffic took effect from 17 August 1987 - just over 18 months after the landslip occurred - and having been legally enforced by temporary TROs in the interim.
Our road starts less than half a mile north of the English border by turning off the A7 at the southern end of the bypass. We head northeast briefly before zigzagging to reach the river and run parallel upstream. When the river meanders we do not but bear left to enter Canonbie. After passing the Cross Keys our road ends when the B6357 comes in from the left and TOTSOs, taking on the road ahead.