N31 Aqueduct Harlingen

Project description

Due to the number of recreational (sailing) vessels passing the existing moveable bridge in the N31 being the cause of usual traffic delay, the new crossing has been designed as an aqueduct under the canal.

The cross section of the aqueduct comprises two motorway tubes with 2 lanes each, with a low internal wall with columns in between. The aqueduct is suited only for motorway traffic. 

Scope of work

Civil, structural and marine works:

• Transport and immersion engineering and work preparations of transport configuration, provisions and equipment for float up, transport, immersion, installation and sand flow of the aqueduct element
• Ballast plan, ballast capacity, jacking plan and sand flow calculations
• Geo-hydrological advisory of canal bottom and shore protection
• Construction methods, construction time schedules and transport and immersion time schedules
• Operational management and command of all preparations phases and transport and Immersion operations
• Advisory and provision of working/construction method and guidelines for post-immersion finishing works such as ballast exchange (in co-operation with the client)
• Advisory and supervision upon construction (in co-operation with the client)