|Location Map ( geo)|
|Via:||Cobden Street, New Park Road, Grove Road|
|Distance:||1.4 miles (2.3 km)|
|Met (1948):||A4048, A467|
|Route outline (key)|
The B4490 was a short link road in the lower Ebbw Valley. It was originally unclassified but had gained its number by 1939 as part of a bypass to Risca. However, road improvements in the area have now provided a more substantial bypass and so the B4490 has been declassified again.
The road started on the A4048 Gladstone Street in Crosskeys and headed southeastwards along the residential Cobden Street. After opening out it continued along the valley bottom and entered Risca along Crescent Road along the bank of the Ebbw River. After running along Grove Road, once again lined with terraced houses, the road ended on the A467 (present B4591) St Mary Street.