|Location Map ( geo)|
|From:||Bridge End, Sedbergh (SD627921)|
|To:||Grayrigg Common (SD613989)|
|Distance:||4.6 miles (7.4 km)|
|Route outline (key)|
The B6257 follows the River Lune upstream from Sedbergh.
The road starts on the A684 on the Westmorland bank of the River Lune and heads north, narrowing immediately. The river itself is met a few hundred yards further on and this is followed for the next couple of miles. However, shortly afterwards a dismantled railway line crosses the river and the line runs between river and road, making them largely invisible from each other.
The road goes through the scattered village of Firbank and reaches Beck Foot, where the road descends to cross a stream that the railway line (just to the right) needs a viaduct to go over (this, the Lowgill Viaduct, is a landmark clearly visible from the M6). This is the point where the river (and railway line) and road diverge and, perhaps not coincidentally, is the point where the B6257 widens to S2.
In quick succession, the road goes under the West Coast Main Line and two bridges carrying the M6 before it climbs out of the Lune Valley. The road crosses the moors to end at a T-junction on the A685 on Grayrigg Common.