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Dulles Corridor Metrorail Project
A 23-mile extension of Washington's existing Metrorail System
- Washington DC, Virginia, USA
- Bridges & Viaducts, Mass Transit
- Completed: 2012
- Bridge length 4.200 m;
- Number of segments 2.700;
- Max span length 53 m;
- Deck surface 40.800 sqm.
The Dulles Corridor Metrorail project (DCMP) is an extension of the existing 170-km-long metro rail network connecting Washington DC, Tysons Corner and Washington Dulles International Airport. The total length of the new rapid rail transit system is approx. 37 km, with 11 new stations and a new service and inspection yard.
The first part of the project relates to 17 km of guideways, of which 4,2 km are elevated (with an average above-ground height of 11 m). The viaducts were of a segmental span by span type, and were erected through the overslung launching girder system.
Rizzani de Eccher entered into a subcontract with DTP for the supply of precast segmental box girders. The design of the temporary solutions and all engineering services required for the erection of segments were developed in the main technical office of Deal and Rizzani de Eccher in Italy.
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