In the following link we share a new video with the complete presentation of the Construction Process of the New Boca del Cerro Bridge over the Usumacinta River, in Mexico, in section 1 Palenque-Escárcega of the Mayan Train. IDEAM | A TYLin Company collaborates with Mota-Engil México both in the conception phase, construction project and with technical support during constraction.
The new viaduct is located parallel to and very close to the impressive Boca del Cerro arch bridge, in service since 1950.
The typological and structural solution chosen for the new Mayan Train bridge was based on the condition of seeking the greatest possible transparency, resolving the central span of 160 m by means of a steel truss with double composite (steel&concrete) action, which 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.
The large central span is embedded at the ends by means of two short hidden spans, 30 m long, with a post-tensioned concrete box girder cross section, anchored in abutments, and will be executed by cantilevered advance using a mobile gantry that avoids any dependence on the riverbed.
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.
Later, steel truss segments will be positioned to conform the deck with two cantilever advance arriages, avoiding any condition or dependence on the Usumacinta River crossing.