Leeds-based CML has been called in to build a replacement for a stricken tunnel in the North East that has closed a major road.
The contractor will create a new structure after the water tunnel near Howden in Yorkshire partially collapsed last week and shut the A614.
Network Rail owns the culvert, which carries water alongside the railway and under the road, and is managing the project even though the railway is unaffected.
The cause of the collapse remains under investigation, but work has begun to replace the tunnel with a new structure. The road will be opened to single-file traffic when it can be, before being fully reopened in about five weeks.
Network Rail area director Mark Tarry said: “Safely carrying out structural repairs to tunnels like this one is something we are very experienced in and work has already started to get the tunnel rebuilt and the road reopened.”