The project involves replacing the existing Gawler railway line underbridge crossing over Dry Creek, just south of Mawson Lakes Interchange, with a concrete culvert structure and ballasted track to provide structural improvements.

So far, 161 cubic metres of concrete has been poured for the new crossing since works began in mid-December 2020.

The works are being undertaken during the scheduled closures of the Gawler line to minimise overall impacts to passengers, and are on track for completion by the end of this month, weather permitting.