The Tiefenau bridge in Worblaufen is considered as the main line of the Regionalverkehr Bern-Solothurn (RBS). All railway lines cross that bridge, which belongs to the most frequented railway bridges in Switzerland with 550 trains rides and 60'000 train passengers daily.
Various elements of the 50-year-old construction are damaged despite the occasional consolidation and refurbishment works. The restoration works led by Marti AG Bern have started in April 2017. The end of construction works, which include the replacement of the bridge bearings, the drainage system, the leaking bridging of joints and the surfacing of the walkway, is planned for late fall in 2018. Strengthening measures will be applied to the inside of the box girder as well as to the pillars and the abutments. Concrete surfaces, railings and cable ducts will be restored.
Since the Tiefenau bridge is declared an object worthy of protection by the cantonal department of monument preservation, the alteration of exterior appearance of the 200 meters long, 11 meters wide and 30 meters tall bridge will be kept to a minimum.
Marti AG Bern (German)