Marine Works
Bristol Bridge Lift Meets the Winter Lock Programme
IMWO original engineering diagram; source: Bristol Harbour Authority
Three Pero's Bridge spans are due to move by barge in the week of 2 November. Survey work and the approaching Netham winter closure put separate constraints on harbour access and marine plant movements.
Three spans move to Albion Dry Dock
Bristol Harbour Authority's notice 48/26 schedules a heavy-lift barge and tug for the week beginning 2 November 2026. Three spans of Pero's Bridge are to be removed and taken to Albion Dry Dock. Lifting and vessel movements are restricted to daylight, with temporary relocation of affected moorings and navigation restrictions during manoeuvres [1]. The September Harbour Committee recorded repair-contract decisions and a further decision needed for temporary span removal after the bridge failure [2].
Reserve the lifting area and the transit route
The marine work area extends from the crane position to the receiving dock. Before a lift, the barge and tug need a clear route for the suspended or secured load, suitable temporary moorings and an agreed receiving arrangement. Moving the nearby boats creates space at the bridge; transit restrictions protect a different part of the operation. A lift programme should allocate both so that an available crane does not face an occupied route. The daylight condition also limits the time available for securing the span and completing its tow. HSE's lifting guidance also requires the plan to address the resources, procedures and responsibilities for the lift [3].
Evidence conclusion
Netham closes after the 8 November passage deadline
Notice 49/26 schedules bathymetric work on the River Avon and Cumberland Basin on 3 November, around Netham Lock on 4 November, with 5 November held as contingency. Notice 47/26 closes Netham from 9 November through winter, with passage required by 8 November and reopening expected after repairs in spring 2027 [1]. Contractors moving plant between these areas should confirm their intended route and the applicable lock with the Harbour Authority. Netham's closure applies to its own transit; the bridge-lift restrictions move with the lifting and towage operation.
Outstanding evidence
- Daily lifting and towage instructions
- Mooring clearance and Albion Dry Dock receiving arrangements
- Survey movements and the specific locks needed for plant transit
Subject index
Related subjects
These subject pages bring together related projects, technical articles, reports, and evidence methods.
Sources used 3
- Harbour notices 48/26,49/26,47/26 and winter operating arrangements Bristol Harbour Authority, Current notices read 1 November 2026
- Harbour Committee: bridge failure, repair contracts and span-removal programme Bristol City Council, 15 September 2026 meeting record
- Planning, resources, competence and crane-hire responsibilities Health and Safety Executive, Current guidance read 1 November 2026