Myanmar
Since the existing Bridge No. 13 was constructed and under operation since the year of 1920. Myanmar Railways has the intention to construct the new bridge no.13 side-by-side and to the existing bridge which is very dilapidated. The bridge no.13 is located at km. 9+656 of Yangon – Mandalay Railway Improvement Phase 1.
Service
OCT performs the detailed design of a new bridge no.13 with the span lengths be adjusted to approximately 30+80+80+30 m (220.0 m) by keeping position of main pier in the river to be aligned and at the same location with that of the existing bridge. The bridge is designed for supporting double tracks of trains Two main spans of 80 m length are designed as the Pennsylvania Petit steel truss configuration, while both of end spans of 30 m length will be designed by using pretension I-girder. The substructures are reinforced concrete piers and abutments on 1.2m.-diameter bored pile foundations. In addition, OCT also performs the design review of box culvert and detailed design of the underpass.