Old Double Lock is a Grade II listed building in the St. Helens local planning authority area, England. First listed on 23 August 1985. Lock.

Old Double Lock

WRENN ID
western-corbel-brook
Grade
II
Local Planning Authority
St. Helens
Country
England
Date first listed
23 August 1985
Type
Lock
Source
Historic England listing

Description

SJ 59 NW ST. HELENS BLACKBROOK ROAD (south side) 4/68 Old double lock

-

  • II

Two-rise staircase lock at head of branch to east of main canal. 1758. Stone. Barrel-shaped plan. Gates removed and lock preserved as cascade. Part of north side reduced in height. This is the oldest British example of a staircase lock.

Listing NGR: SJ5358896094

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