Project information

Delaware Memorial (USA)

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Project description mageba scope Highlights & Facts The Memorial is a twin In 2019 mageba supplied sixteen crossing the Delaware RESTON®SPHERICAL bearings, designed to mageba Products: River. The toll bridges carry Interstate 295 resist frequent service limit state uplift loads Type: RESTON®SPHERICAL and U.S. Route 40 between Delaware and of up to 302 kips (1,344 kN). bearings with . All bearings are equipped with modern up-lift control It is one of only two crossings of the Dela- structural health monitoring system, com- TENSA®POLYFLEX ware River with both U.S. and In- prising of embedded pressure sensors, tilt- Advanced flexible plug expansion joints terstate Highway designations, the other meter, displacement sensor and proximity Feature: Bearings equipped with being the . sensors, that measure the load, rotation, Structural Health Scope of this project was to replace the ex- movement and wear of sliding material Monitoring System isting pin & links, with modern uplift spher- respectively. The monitoring system is ac- Installation: 2019 / 2020 ical bearings which offer lower friction as cessible 24/7 by the owner, through a user well as a robust uplift restraint. friendly web interface. Structure: A full scale production bearing was test- City: Wilmington, DE ed to 150 % proof tension load, as well as Country: United States cyclic tension compression loading to simu- Type: Suspension bridge late the frequent uplift load case. Span: 2,150 ft. (655 m) In November 2020 mageba installed two Length: 10,765 ft. (3,281 m) flexible plug expansion joints to replace Owner: and Bay some of the aging and damaged strip seal Authority joints on the bridge. Contractor: American Bridge Company Engineer: HNTB Corporation

The Delaware Memorial Bridge is located in Installation of the POLYFLEX joint on two lanes at a Wilmington, in the state of Delaware time allowing traffic to remain flowing One of the bearings ready for shipping

USA Wilmington

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