Kinnaird Bridge

Coordinates: 49 ° 17 ′ 40 "  N , 117 ° 38 ′ 37"  W.

Kinnaird Bridge
Official name	Columbia Bridge
use	Road bridge
Convicted	British Columbia Highway 3
Crossing of	Columbia River
place	Castlegar, British Columbia , Canada
construction	Prestressed concrete bridge
Number of openings	five
Longest span	3 × 80 m
height	45 m
completion	1965
planner	Riccardo Morandi
location

The Kinnaird Bridge , now officially Columbia Bridge , is a two-lane road bridge over the Columbia River in Castlegar , British Columbia , Canada . It belongs to the British Columbia Highway 3 , part of the Crowsnest Highway , and is named after its starting point, the village of Kinnaird , which was not incorporated into Castlegar until 1974.

Since the client was looking for something other than the steel truss bridges that are widespread in North America , Riccardo Morandi was asked to design a concrete bridge. He created the implementation planning together with the engineering office Choukalos, Woodburn, McKenzie from Vancouver .

The Kinnaird Bridge was completed in 1965, according to other sources in 1960.

description

Instead of the usual vertical pillars, the Kinnaird Bridge has four V-shaped structures, each consisting of 2 x 3 struts, standing on massive bases, each stiffened by two crossbars. Two of these structures stand in the river, two on the bank, and form three openings with pillar spacing of 80 m each and two slightly shorter side openings. The V-structures each carry a section of the bridge plate, which function as the cantilever arm of a cantilever bridge . In between (and between the outer V-structures and the abutments ) there are hanging girders, so that a 365 m long carriageway girder is formed, which from a technical point of view corresponds to a Gerber girder . The undersides of the panel sections on the V-structures as well as the suspension beams are slightly bulbous, which gives the 45 m high bridge a filigree impression.

The bridge was completely renovated from 2011 to 2012.

Web links

• Kinnaird Bridge. In: Structurae

Individual evidence

1. ↑ Historic photo of the bridge on media tumblr.com
2. ↑ Castlegar on crowsnest-highway.ca
3. ↑ Kinnaird Bridge, Castlegar, British Columbia on procrete.tumblr.com
4. ↑ Plaque on the bridge
5. ↑ Various sources (including Leonardo Fernández Troyano: Bridge Engineering. A Global Perspective. Colegio de Ingenieros de Caminos, Canales y Puentes, Thomas Telford 2003, ISBN 0-7277-3215-3 , p. 473) name 1960 as the completion date. Columbia River History, Bridges and others name 1965, which corresponds to the plaque on the bridge and fits in with the fact that Morandi probably only had such an international reputation after the Ponte Bisantis and the General Rafael Urdaneta Bridge (both completed in 1962), that they turned to him in distant British Columbia to design a concrete bridge in his style instead of the truss girder bridges customary there.
6. ↑ The information provided by the sources varies between 20 m and 55 m. The height information in Google Earth results in 45 m.
7. ↑ Kinnaird Bridge on the website of Seismic 2000 Construction Ltd.