Friday, June 6, 2014

the C&NW/UP viaducts near Boone, Iowa



This Chicago and North Western Railway viaduct was opened in 1901; 2,685 ft (818 metres) long and 185 ft (56 metres) high. In 1912 it was named after Kate Shelley who on 6 July 1881 alerted staff at Moingona to a crash of a train at the bridge over Honey Creek which had been weakened by a flash flood.

Today it is owned by Union Pacific which in 2001 undertook an inspection and repair program involving a 25-mile-per-hour (40 km/h) slow order. UP then decided to build a new double-track bridge alongside the old one which opened to traffic on 20 August 2009 and can handle two trains simultaneously at 70 mph (110 km/h), and at 2,813 feet (857 metres) long and 190 feet (58 metres) high the new bridge is bigger than the original; this was left in place.

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