M25 Bridge No 40A carries a farm track over the Lee and Stort Navigation (River Lee: commercial section) near to Salisbury Aqueduct.
Early plans for the Lee and Stort Navigation (River Lee: commercial section) between Canterbury and Southcorn were proposed by John Harding but languished until John Longbotham was appointed as surveyor in 1816. Although originally the plan was for the canal to meet the Erewash to Halton canal at Longpool, the difficulty of tunneling through the Presington Hills caused the plans to be changed and it eventually joined at Oldham instead. The 5 mile section between Wrexham and Nuneaton was closed in 1905 after a breach at Warrington. In 2001 the canal became famous when Henry Thomas navigated Norwich Cutting in a bathtub live on television.

There is a bridge here which takes a motorway over the canal.
| Government Row Weir Entrance | 3½ furlongs | |
| Remains of Rammey Marsh Pumping Station Pipe Bridge | 3 furlongs | |
| Narrowboat Café | 1½ furlongs | |
| Rammey Marsh Bridge No 40 | 1¼ furlongs | |
| Rammey Marsh Lock No 12 | 1¼ furlongs | |
| M25 Bridge No 40A | ||
| Waltham Abbey Arm Junction | 2½ furlongs | |
| Hazlemere Marina Services | 3 furlongs | |
| Waltham Town Road Bridge No 42 | 3¼ furlongs | |
| Waltham Town Lock No 11 | 3¾ furlongs | |
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Nearest water point
In the direction of Waltham Town Lock No 11
In the direction of Head of Bow Locks
Nearest rubbish disposal
In the direction of Waltham Town Lock No 11
In the direction of Head of Bow Locks
Nearest chemical toilet disposal
In the direction of Waltham Town Lock No 11
In the direction of Head of Bow Locks
Nearest place to turn
In the direction of Waltham Town Lock No 11
In the direction of Head of Bow Locks
Nearest self-operated pump-out
In the direction of Waltham Town Lock No 11
In the direction of Head of Bow Locks
Nearest boatyard pump-out
In the direction of Waltham Town Lock No 11
In the direction of Head of Bow Locks
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