Sgt. Aubrey Cosens VC Memorial Bridge

The Sgt. Aubrey Cosens VC Memorial Bridge is a road bridge in Latchford, Ontario,[1] which carries Ontario Highway 11, a branch of the Trans-Canada Highway system, across the Montreal River.[2]

Sgt. Aubrey Cosens VC Memorial Bridge
Sgt. Aubrey Cosens VC Memorial Bridge over the Montreal River.
Coordinates47°19′20″N 79°48′35″W
Carries2 lanes Ontario Highway 11/Trans-Canada Highway
CrossesMontreal River
LocaleLatchford, Ontario
Other name(s)Latchford Bridge
Maintained byOntario Ministry of Transportation
History
OpenedOctober 1960
Location

History

The bridge was constructed in October 1960.[3] Prior to the bridge's construction, Highway 11 traffic crossed the river by driving directly over the nearby Latchford Dam.[2]

The bridge was renamed in 1986 in honour of Aubrey Cosens, a military sergeant and Victoria Cross recipient from the area.[3] Members of the Argyll and Sutherland Highlanders of Canada(A&SHofC), Cosens' original regiment, were present at the official unveiling. The regimental cadet corps formed a guard of honor and the Argyll Pipes & Drums provided musical support. Just a few months earlier, provincial Transportation Minister Ed Fulton had refused the town's request to name the bridge for Cosens on the grounds that government policy was to not name bridges after people, despite the fact that the government had just recently renamed the Burlington Bay Skyway in Burlington and Hamilton for former cabinet minister James Allan.[4]

Failure and reconstruction

On January 14, 2003 there was a partial failure of the bridge, resulting in the closure of the highway.[5] At approximately 2:45 p.m., as a transport truck was passing over the bridge, several rivets suddenly tore away from the support cables, causing the northwest corner of the bridge deck to drop approximately two metres.[5] There were no casualties in the incident, as the truck driver made it safely off the bridge.[5]

The collapse forced Highway 11 traffic to detour, resulting in abnormally high traffic loads being pushed onto routes such as Ontario Highway 65, Quebec Route 101, Ontario Highway 63 and Ontario Highway 533,[6] or to drive as far as Latchford, walk across the dam and have another vehicle pick them up on the other side.[7] Ontario Northland also instituted a special train service between Temagami and New Liskeard for the duration of the interruption.[8]

A temporary one-lane Bailey bridge, which opened two weeks after the incident, was immediately constructed to carry traffic on the highway;[9] due to the expected water levels on the Montreal River once ice and snow began to melt in the spring, however, a second temporary bridge then had to be constructed for the duration of the original bridge's reconstruction.[10]

According to the Ministry of Transportation's final report, the failure was caused by fatigue fracture of three steel hanger rods on the northwest side of the bridge.[11] The report also recommended a number of improvements to the ministry's design and inspection practices to prevent future failures of this type.

Following reconstruction, the bridge resumed service in 2005.[12] Each hanger rod was replaced with four cable wires, to provide greater stability in the event of a wire failure.[12]

References
  1. "Bridge collapse has trucks scrambling: Latchford span repair of 'the utmost urgency'". Sudbury Star, January 17, 2003.
  2. "Bridges and roads aren't being maintained". Sudbury Star, January 22, 2003.
  3. "Bridge re-named in memory of VC". Toronto Star, May 4, 1986.
  4. "Ontario town irked by refusal to name bridge after war hero". Ottawa Citizen, October 3, 1985.
  5. "Highway 11 bridge collapses: 'I heard what sounded like shotgun blasts'". Sudbury Star, January 16, 2003.
  6. "Collapsed bridge creates 200-kilometre detour". Montreal Gazette, January 17, 2003.
  7. "New bridge welcomed by users: Travellers have been taking long detours for past two weeks". Sudbury Star, January 29, 2003.
  8. "New bridge will be built". Sudbury Star, January 18, 2003.
  9. "Temporary bridge opens in Latchford". Sudbury Star, January 28, 2003.
  10. "Up and running". Sudbury Star, March 5, 2003.
  11. Mohamed Ben-Daya, Uday Kumar and D. N. Prabhakar Murthy, Introduction to Maintenance Engineering: Modelling, Optimization and Management. John Wiley & Sons, 2016. ISBN 9781118487198. p. 68.
  12. Björn Åkesson, Understanding Bridge Collapses. CRC Press, 2008. ISBN 9780415436236. pp. 243-245.
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