The B1412 was a loop off the A1101 on the Norfolk/Cambridgeshire border. The road was originally numbered B1101 and was quickly upgraded to become the A1101, before getting its number around 1930. The road survived into the 21st century but is now unclassified, except for a short section in the south which has become the B1098.
The road started on the A1101 in Three Holes and headed west to meet the B1098 before bearing right to reach the River Nene. This was then followed for the rest of the route, with the occasional bridge to the road on the other bank of the river. By now the road was in Upwell and presently ended in the village centre back on the A1101.