Heigham Holmes Floating Pontoon Swing Bridge
Eadon Consulting carried out the design of the operating equipment for the replacement floating swing bridge at Heigham Holmes in Norfolk. The river crossing at Martham Ferry provides access to the environmentally sensitive island of Heigham Homes. This area of land requires ongoing land management to maintain it, access for farm vehicles is therefore important.
Heigham Holmes, Norfolk
The National Trust
In Partnership with
This area of the fens is particularly popular with sailing boats and as such the bridge has to be left in the river open position, this means that when the bridge is swung into the position, once the vehicle has been driven over it, the operator has to row back onto one side of the river, open the bridge and then row back to the other side to carry on their journey. This makes the operation of the bridge very slow and inconvenient.
A number of different bridge concepts were considered including traditional design bascule lift bridges and swing bridges. However due to the surrounding area and architecture, it was felt that a floating swing bridge similar in concept to the existing pontoon design was the most suitable.
Eadon produced the detailed design of the mechanical equipment and closely supervised the design and construction of the hydraulic and electrical systems. Further support was given with the carrying out of the CE marking of the structure to demonstrate compliance with the Machineries Directive.