It spans the Albula east of the hamlet of Solis, in the canton of Graubünden, Switzerland.

Designed by the engineer Hans Studer, it was built in 1902 by Munari, Cayre und Marasi for the Rhaetian Railway, which still owns and uses it today.

The limestone-built viaduct was conceived by Hans Studer as the first stone arch bridge in Switzerland to be designed in accordance with the elasticity theory.

With its height of 89 metres (292 ft), the Solis Viaduct is the highest on the Rhaetian Railway.

The previous isolation between the gravel bed and walls was filled in by a new sealing system, incorporating liquid plastic film and shotcrete.