|Distance:||2 miles (3.2 km)|
|Met:||A604, A14, B1043, A1128, A141, B1043, A141|
|Now part of:||A141, B1044, B1519|
|Route outline (key)|
Beginning at the crossroads with the A14 and A604 that is now Spittals Interchange, the road headed northeast to a roundabout where it met the former A14 (renumbered B1043 to the north) and turned right to head into Huntingdon along it. In the town centre, the A1128 cut the corner off to the A141 northeastwards along Cromwell Walk; shortly after there was a brief merger with the A141, which went through the town. The A1126 went along Riverside Road, the southern half of what is now the ring road around the town centre, ending on the A141 to the east of the town.
The new-build section has now been dualled and to become part of the A141 northern bypass whilst the rest of the road has been downgraded to Class II status along with all roads in the town centre.