On This Day in Construction:

The Prince Edward Viaduct, more commonly known as the Bloor Street Viaduct in Toronto- Construction started on June 16, 1915.

Designed by Edmund W. Burke, the Prince Edward Viaduct is a three hinged concrete-steel arch bridge with a total span of 494 metres (1,620 feet), at 40 metres (131 feet) above the Don Valley.