WWW.SYSTRAIBT.COM CABLE-STAYED BRIDGE ATLANTIC BRIDGE COLŌN, PANAMA Client: La Société internaonale du Canal Owner: Panama Canal Authority Contractor: VINCI Construcon Grands Projets ESSENTIALS: Bridge Design Consultant: SYSTRA IBT Year Completed: 2018 SYSTRA IBT’s Role: Redesign and construcon engineering for main span, independent checking for approaches. The Atlanc Bridge is a 3081 m (10,108 ſt) long bridge near the city of Colón, Panama. The main cable-stayed unit has a central span of 530 m (1,738 ſt) and provides a minimum vercal clearance of 75 m (246 ſt) above the canal. Approach spans have lengths of 45 m (147 ſt), 82 m (269 ſt), and 125 m (410 ſt). The 23.6 m (7.7 ſt) wide deck carries four traffic lanes with emergency shoulders. The bridge has been designed for significant seismic forces resulng from a peak rock acceleraon of approximately 0.8 g. The cable-stayed spans consist of two parallel box girders connected with transverse diaphragms. The deck, which is built using the balanced canlever method, is supported by two planes of stay cables anchored along its edges. The delta shape pylons extend 135 m (442 ſt) above the roadway, and their legs are connected with a crossbeam directly under the bridge deck. The approach span superstructure consists of a single-cell box girder with constant depth for the 45 m (147 ſt) spans and variable depth for the 82 m (269 ſt) and 125 m (410 ſt) spans. The 45 m (147 ſt) spans are incrementally launched, while the 82 m (269 ſt) and 125 m (410 ſt) spans are built in balanced canlever using traveling forms. Foundaons consist of 1.8 m (5 ſt) and 2.5 m (8 ſt) diameter drilled shaſts. Design-Bid-Build-Value Engineering. Photo Credit: VINCI Photo Library