In recent weeks, the work progress of two short hidden compensation spans, 30 m long, with a post-tensioned concrete box girder cross section, where will be embedded the large central span of 160 m design by means of a steel truss with double composite (steel&concrete) action.
In addition, progress the assembled of central section steel truss segments on both banks of the river. Later, these segments will be positioned to conform the deck with two cantilever advance carriages, avoiding any condition or dependence on the Usumacinta River crossing.
The new viaduct is located parallel to and very close to the impressive Boca del Cerro arch bridge, in service since 1950, and allows jumping the great span of the river Usumacinta -the largest in Mexico-, respecting its integration into a natural environment of extraordinary beauty and avoiding “competing” with the existing bridge, which must continue to maintain its preponderance in the landscape.
Once completed, the bridge will become the largest span of all of the Maya train.
▶IDEAM | A TYLin Company is collaborating with Mota-Engil México, and has carried out the conception, the detailed design and is providing technical assistance during execution. Recal is the Mexican steel workshop that is executing the steel structure.
Video with assembly sequence: