A4087 (Menai Bridge - Capel-y-Graig)
|Location Map ( geo)
|Menai Bridge (SH557712)
|1.8 miles (2.9 km)
|Now part of:
|Route outline (key)
The original A4087 was the highest-numbered A4xxx road outside London in the 1922 Road Lists and was located, as expected, at the far corner of the 4-zone, in north Caernarfonshire.
The road started on the A5 on the southern side of the Menai Suspension Bridge and headed southwestwards, crossing the railway line immediately. The road continued across open country, passing through no places of any size. Over a mile later it passed the hamlet of Capel-y-Graig and then descended to end on the A499.
When the west coast trunk road was created it followed the A4087 to meet the A5 rather than following the A499 into Bangor city centre. As such, when the A487 was extended north to meet the A5 it followed the route of the A4087. The number therefore became redundant and was reused immediately for the old road through Bangor.