 The Caledonian Railway (CR) became the successor to the Glasgow Paisley and Greenock Railway, and it too wished build a larger passenger terminal on the north side of the Clyde; on 31 July 1879, the CR opened a new terminus called Glasgow Central, fronting Gordon Street; the line was extended across the Clyde from Bridge Street on a four-track bridge built by Sir William Arrol & Co.. Bridge Street station was also improved to include two new through platforms leading to Central Station and four bay platforms