From Roader's Digest: The SABRE Wiki
Route
Colsterworth - Holbeach
Low Bridge where A151 passes under ECML
The present terminus of this road is at the Colsterworth roundabout on the A1, and we travel from there East through nondescript Lincolnshire countryside, passing Corby Glen after 5 miles. The next few miles take us around numerous bends - like most of this county's roads there are few straight sections - and a tight left hander leads into several sweeping right-hand bends, before a sharp descent down a 12% gradient with a tight left bend at the base take us into the pretty village of Grimsthorpe.
We then cross a small river at Edenham on a single-track stone bridge that has recently installed lights to control the flow of traffic, before passing the junction of the A6121 and entering Bourne. We meet the A15 right in the town centre at a busy traffic light-controlled crossroads.
I haven't driven the remaining section, but the stretch described above was formerly the B676, the A151 previously started at the A15 junction in Bourne. Also, the current eastern end is at Holbeach - it TOTSO's left just before Holbeach and goes on a new alignment to meet the new section of A17, the Penny Hill bypass.
History
Historically though, the A151 used to continue along what is now the B1515 through Holbeach and meet the A17 at Fleet Hargate.
Original Author(s): Andy(Coasterjunkie)
