Inter-Dominion Line

The Inter-Dominion Line is an electrified 529.5 mile railway line of the British Columbia Railway (BC Rail) running from Pacific Central Station in Vancouver to Jasper, Alberta, Canada. It is the busiest railway line in British Columbia,and the second-longest of BC Rail's lines.

The Inter-Dominion Line makes numerous connections along its length: at Grandview Junction, Vancouver it connects to the South False Creek Line and the Washington & British Columbia Railway's Burrard Inlet Line, at Brentwood Junction, Burnaby to the North Shore Line, at Brunette to the W&BC Semiahmoo Line, at Sapperton to the Canadian Pacific Railway's Westminster Subdivision, at Liverpool to the BC Hydro Railway's Fraser Valley Line and the W&BC New Westminster Southern Line, at Eagles Reach to the BCH Fraser Valley Line, at Gifford and at Matsqui to the North Western Pacific Railroad's Bellingham & Northern Line, at Chilliwack to the BCH Fraser Valley Line and the W&BC VV&E Line, at Hope to the Coquihalla Line, at Siska, Spences Bridge, South Nepa, and Barnes Creek to the CPR Thompson Subdivision, at Ashcroft to the Sitlika Line, at Brocklehurst to the Airport Branch and the Supertest Spur, at Kamloops to the CPR Shuswap Subdivision, at Valemount Junction to the Valemount Connecting Line, and at Jasper, Alberta to the Grand Trunk Line and the Canadian National Railway's transcontinental trunk line.

The Inter-Dominion Line is divided amongst several Regions of BC Rail: the Vancouver–Ashcroft section is Line 20 of the Lower Mainland Region, the Ashcroft–Vavenby section is Line 30 of the Fraser Region, and the Vavenby–Jasper section is Line 71 of the Grand Trunk Region. The Airport Branch is Line 3001 and the Supertest Spur is Line 3002 of the Fraser Region.