From the archives: A bridge too far

The ingeniously twisted canal bridge; the first bridge of iron; the “bridge” to Sri Lanka; and folding, curling, tilting, swinging, and submerging bridges.

The roving bridge is designed so that a horse pulling a canal boat can change banks without detaching the rope.


The first iron bridge in the world has been standing for 240 years.


Rama’s Bridge is a chain of islands and shoals that link Sri Lanka to India.


Gateshead Millennium Bridge
Mike1024 / Public domain

To let marine traffic past, bridges can lift, fold, curl, retract, tilt, swing, or submerge.

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