In 1982, the line was converted from broad gauge to dual gauge track. This coincided with AN's conversion of the Crystal Brook to Adelaide line to standard gauge that same year. Following conversion of the Adelaide to Melbourne corridor to standard gauge in 1995, a south-to-west triangle was constructed at Dry Creek. This link allows trains from Melbourne and the Islington Freight Terminal to travel directly to Port Adelaide without reversing in Dry Creek yard. This section of track is standard gauge only.