Altersbergbrücke, Steel motorway bridge in Trebesing, Austria

Altersbergbrücke is a steel bridge carrying the Austrian Tauern Autobahn (A10) across the Lieser valley in the municipality of Trebesing, between Spittal an der Drau and Gmünd in Carinthia. Built by Waagner Biro in 1973 and opened to traffic in 1976, it is 800 m long and stands 60 m above the valley floor. Asfinag designates it internally as L 40.

Waagner Biro built the steel bridge in 1973 and it opened to traffic in 1976 as part of the Tauern Autobahn (A10), designated L 40 by Asfinag. In October 2006 a strong deformation of the steel structure was detected, possibly caused by a heavy transport exceeding the 140 t limit by 20 t; the motorway between Spittal and Gmünd was closed until 14 December 2006. Renovation, originally planned to end in 2007, was completed in 2011 with the Salzburg-bound deck slab demolished and rebuilt.

The bridge carries the Tauern Autobahn (A10) over the Lieser valley; Asfinag designates it internally as L 40. When it was closed in October 2006, traffic was diverted onto the Katschberg Straße (B99) running directly beneath it, while trucks over 7.5 tonnes had to use the Pyhrn Autobahn or the Felbertauerntunnel.

The Altersbergbrücke carries the A10 Tauern Autobahn between Spittal an der Drau and Gmünd, on the municipal territory of Trebesing. It is a motorway bridge with no pedestrian crossing; during the 2006 closure traffic was diverted onto the Katschberg Straße (B99) running directly beneath it, while trucks over 7.5 t were sent via the Pyhrn Autobahn or the Felbertauerntunnel.

The bridge's Asfinag internal designation is L 40. During the 2006 closure, traffic was diverted onto the Katschberg Straße (B99) running directly beneath the bridge, while trucks over 7.5 tonnes had to use the Pyhrn Autobahn or the Felbertauerntunnel.