a steam train crosses the Waimakariri River, Canterbury, 1900s
But not the bridge that most rail enthusiasts associate with the river on the Midland Line. This bridge crossed the river across a small gorge between the settlements of Oxford and Sheffield on the Canterbury Plains not far from the foothills of the alps. It was a linking line that never saw a lot of traffic and was closed in 1930; the bridge was turned into a road bridge and still exists as such.
For lots more, see the book On the TransAlpine Trail.