The Severn Valley Railway is a heritage train line in Shropshire and Worcestershire, England. The 16 mile (26 km) line runs along Severn Valley from Bridgnorth to Kidderminster, following the course of the Stream Severn for most of its route.Train services are hauled generally by steam locomotives ; however diesel traction is also occasionally used. The train line is among the most well liked heritage railways in the country.