Banverket (The Swedish Railway Administrator) wanted to increase the maximum allowed axle load from 225 to 250 kN along the Swedish main northern railway line. One of the bridges, Bridge over The Vindel River, needed to be studied more. The bridge crosses the Vindel River near Vindeln some 60 km NW of Umeå and was built in 1952. The structure consists of a concrete arch with a span of 110 m and a height of 22 m. The arch carries a concrete trough deck with concrete columns. This report summarizes the research work on monitoring and numerical analysis of dynamic behaviour for The Vindel Bridge.