|From:||Long Sutton bypass (TF441217)|
|To:||Bury St Edmunds (TL854650)|
|Length:||53.4 miles (85.9 km)|
|Meets:||A17, B1359, B1165, B1169, B198, A47, B1101, A1122, B1098, B1094, B1100, B1411, A10, B1382, B1102, A11, A1065, B1112, B1106, A143, A1302|
|Former Number(s):||A150, A47, B1101|
|Route outline (key)|
The A1101 runs through the heart of the Cambridgeshire Fenlands into west Suffolk. Its length (it is the longest 4-digit A-road in the country) suggests its importance, although most of the road is not a primary route due to its numerous twists and turns.
The road starts just outside Long Sutton at a roundabout on the A17 and, initially primary, heads south along a reasonably straight road to Wisbech. It runs through the town, meeting the A47 bypass at the other side, and turns southeast to Outwell. The A1122 takes up the primary route to Downham Market, while the A1101 heads south through the Hundred Foot Drain, and out the other side to Littleport, where it briefly multiplexes with the A10 along the bypass.
After crossing the railway and leaving the A10, the A1101 runs southeast through slightly less flat countryside. The Ely to Norwich railway line is crossed at Shippea Hill level crossing, then the road runs past RAF Mildenhall (the old route went straight and is now lost under the runway) to meet the A11 and A1065 at the Fiveways Roundabout in Barton Mills. There's then a run through woodland then along the valley of the River Lark southeast to Bury St Edmunds. After going under the A14 the road ends at a roundabout where it meets the A1302 and a spur of the A143.
The A1101 was originally the A150 to Wisbech, the A47 to Outwell, and the B1101 to Bury St Edmunds; the last stretch into the town was the original line of the A143. By 1927, the B1101 section had been upgraded to Class I, with the road unusually keeping its number but changing its prefix.
On 1 April 1935 the A1101 was further extended over the former A150 to Long Sutton, as it was by this time recognised as an important continuous cross-country route.