Sihlhochstrasse, Bridge in Zürich, Switzerland

Sihlhochstrasse is a road bridge spanning the Sihl River in Zürich, connecting the Brunau and Wiedikon districts. It carries six lanes of traffic and serves as a major thoroughfare in the city's transportation network.

Built between 1969 and 1973, the bridge was part of an ambitious plan to reshape the city's highway network. Construction methods like prestressed concrete reflected the engineering approaches of that period.

The concrete structure represents Swiss engineering precision with its hollow box design and systematic placement of support piers every 42.4 meters.

The Sihlhochstrasse is a six-lane motorway bridge of the A3W and is not open to pedestrians or cyclists. It runs 1,250 metres from Brunau over the Sihl to Wiedikon. The carriageway ends abruptly at a boundary wall where the planned continuation of the Zurich express road network was to begin.

The bridge ends abruptly at a retaining wall because the planned highway extension was never completed. This unfinished ending is a visible reminder of transportation planning decisions from the 1970s.