Machinery Pit to West of Swing Bridge at East Side of Dock is a Grade II listed building in the Sunderland local planning authority area, England. First listed on 8 February 1991. Machinery pit.

Machinery Pit to West of Swing Bridge at East Side of Dock

WRENN ID
drifting-postern-rook
Grade
II
Local Planning Authority
Sunderland
Constituency
Sunderland Central MP: Lewis Atkinson (Lab)
Country
England
Date first listed
8 February 1991
Type
Machinery pit
Address
Machinery Pit to West of Swing Bridge at East Side of Dock, Hudson Dock
OS grid reference
NZ 412 571
Coordinates
54.90702, -1.3577
Source
Historic England listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The machinery pit for lock gates No. 4 was constructed around 1880 by Henry W. Wake for the River Wear Commission. This ashlar-lined pit is located immediately west of the eastern swing bridge at the dock and is long and rectangular, positioned at right angles to the bridge. It contains the former chains and cog wheels used for the lock gates. When the swing bridge opens, its long arm rests parallel to this pit. There is also a cast-iron round plate that once covered the lock gate hinge, which is now in the dock workshop. This plate features a low relief inscription that reads: "RIVER WEAR COMMISSION/ NO.4 LOCK GATES/ 1880/ H.W. WAKE. C.E./ ENGINEER."

Local climate

Machinery Pit to West of Swing Bridge at East Side of Dock sits in a drier-than-average part of the UK, with an average of 720 mm of rain a year. This makes it drier than 83% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 95% of listed buildings.

It experiences an average of 27 freeze-thaw cycles a year, fewer than 71% of listed buildings. Of these, 15 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

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  1. Swing Bridge at East Side with Ashlar Walls Grade II 21 m
  2. Trafalgar Square Merchant Seamen's Almshouses Grade II 586 m
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  4. Lampholder in Centre of Trafalgar Square Grade II 608 m
  5. Gates, Piers and Railings to Former Sunderland Orphange Grade II 613 m
  6. Forecourt Wall, Piers and Railings to North of Trafalgar Square Almshouses Grade II 631 m
  7. Swing Bridge, Lock and Walls of North End of Dock Grade II 639 m
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  9. Caretaker's Cottage to Church of Holy Trinity and Attached Wall Grade II 652 m
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