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Dufferin Street bridges

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Maintained by
  
City of Toronto

Construction begin
  
1911 1958

Clearance above
  
6.37 m

Province
  
Ontario

Carries
  
Pedestrian, Vehicle

No. of spans
  
2

Opened
  
1912

Location
  
Toronto

Materials
  
Steel, Concrete

Dufferin Street bridges httpsuploadwikimediaorgwikipediacommonsthu

Crosses
  
Metrolinx/GO Transit rail corridor

Locale
  
Toronto, Ontario, Canada

Total length
  
30 metres (98 ft) (rail bridge) 35 metres (115 ft) (overpass)

Similar
  
Lake Shore Boulevard Bailey Bri, Cherry Street lift bridge, Sewells Road Bridge, Crawford Street Bridge, Old Finch Avenue Bailey Bri

The Dufferin Street bridges are two inter-connected vehicular bridges in Toronto, Ontario, Canada. The bridges carry Dufferin Street over a railway corridor and the Gardiner Expressway to Exhibition Place. The bridges closed to vehicular traffic in 2013. Temporary structures will be built in 2013-2014 to allow a resumption of traffic in early 2014. Beginning in 2016 the bridges will be completely rebuilt to allow more tracks to cross underneath and create a single span to the CNE grounds.

Contents

Map of Dufferin St Bridge, Toronto, ON M6K, Canada

North span

The truss bridge is a 30 metres (98 ft) steel truss bridge, built from 1911 to 1912 to cross over railway tracks south of Springhurst Avenue. Four tracks pass under the bridge. A 2013 engineering study determined that the bridge was unsafe and not viable to be repaired.

South span

The south span is a 35 metres (115 ft) concrete overpass built in 1958 after demolition of the old Dufferin Gate to allow for clearance for the Gardiner Expressway below and will be replaced after 2016 along with the north span in 2016.

Deterioration and replacement

After a report from external inspections conducted in 2007 the city decided to replace both spans with a single span:

  • 1911 bridge over rail corridor is structurally unsafe for vehicular traffic
  • lack space below to expanded rail corridor
  • need to provide space for future LRT corridor to the south end of the bridge
  • 1958 bridge over Gardiner Expressway needs maintenance to keep it structurally safe
  • eliminate the existing 10 metres (33 ft) gap between the two existing bridges spans
  • From June 2013 the bridges have been closed to vehicular traffic. Starting in November 2013, the north bridge superstructure will be replaced by three temporary bridges - two for traffic, and a third for pedestrians. These will open in early 2014. The temporary bridges will be used until 2016, when construction will begin on a new bridge to replace the two current spans.

    City is deciding the type of bridge that will span over the tracks.

  • steel plate box girder
  • hung arch
  • cable stay
  • concrete box girder
  • References

    Dufferin Street bridges Wikipedia


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