Box Jacking under C60 bridge
Colmenar Viejo station, Madrid

Description

Single span C60 temporary bridge to sustain the tracks and allow trains at 30 km/h speed during jacking operations underneath.

A total of 12 segments of 17 tons each, for a total weight of 205 tons and total length of 18 meters. Installation and pushing of the box executed in just 9 hours.