Delaware Memorial Bridge

 

Solutions & Technologies

In 1951, the Delaware Memorial Bridge was opened to traffic allowing commuters to navigate over the Delaware River on a 3,650 ft (1,112 m) long state-of-the-art suspension bridge. The structure is a twin suspension bridge crossing the Delaware River. This roadway is a major artery which carries I-295 from New Jersey to Delaware. This is a toll road where any rehabilitation to the roadway is a major disturbance to traffic and toll collection.

 

Challenge

The challenge was to provide a durable riding surface on the deteriorated bridge deck within a minimum time window in order to provide the least amount of traffic disturbance. Ductal® Overlay was selected as the solution of choice to supply the overlay riding surface. The existing deck had many areas of severe deterioration which were exposed during the hydrodemolition process.

 

Description

69 years later, structural engineers, project managers, material experts, builders, concrete finishers and many more key players combined forces to accomplish a partial-depth deck rehabilitation pilot project on the New Jersey bound span which consisted of removing deteriorated concrete from the existing deck and replacing it with a layer of Ductal® fiber-reinforced Ultra-High Performance Concrete. This efficient bridge preservation and rehabilitation strategy prevented costly full-depth repairs while providing the structure with a durable, impervious overlay topping.

Discover our projects

 

IA 163 Floyd River Bridge

In partnership with Iowa State University and Iowa State DOT, with participation from Wapello and Buchana counties in Iowa, this project was the first to implement overlay application of UHPC using automated paver system brought by Walo from Europe.

 

Parking Saas Fee

Deformation of the concrete rolling surface, structural deficit in terms of puncture resistance, sloping terrain (5% gradient) ... the equation to be solved for the repair of the covered car park at the Saas-Fee ski resort was arduous. Ductal® took up the challenge and developed an innovative product meeting all these constraints.

 

Zurich Airport railway station

The four tracks of Zurich Airport's underground railway station have been renovated and lowered without interrupting traffic.

 

Commodore Barry Bridge

The Commodore Barry Bridge spans over the Delaware River from Chester PA to Bridgeport NJ. Originally constructed in 1969 and named after the Revolutionary War Hero from Philadelphia John Barry. This bridge is a cantilever truss bridge which was commonly built during those times.

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