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London North Branch Railway Bridge

London North Branch Railway Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: July 12, 2005 and August 5, 2006

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Key Facts

Location
London: Middlesex County, Ontario: Canada
Structure Type
Metal 7 Panel Rivet-Connected Pratt Through Truss, Fixed and Approach Spans: Metal 12 Panel Rivet-Connected Baltimore Through Truss, Fixed
Construction Date and Builder / Engineer
By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
157 Feet (48 Meters)
Structure Length
753 Feet (230 Meters)
Roadway Width
Not Available
Spans
1 Main Span(s)
NBI Number
Not Applicable

Historic Significance Rating (HSR)

Bridge Documentation

There is something for every bridge enthusiast here! Three spans of breathtaking Pratt through truss bridges carry the railroad over the North Branch Thames River, and are followed by deck plate girder spans. Finally, a Baltimore through truss carries the railroad over Oxford Street. The overpass span has a heavy skew giving it a distinct appearance. The overhead bracing for the overpass span is, like the river span, riveted together and includes built-up beams, but the overpass span is completely devoid of lattice or v-lacing, while the river spans have a lattice design. It is unclear why this variation in design exists, which makes the spans look quite different visually. One natural thing to consider is that the overpass span was not built at the same time. However, it is unclear why it would be built at a different time, since the bridge needs that span given where the abutment is positioned.

The bridge sits on concrete abutments and piers, with two exceptions. The middle support of the deck plate girder section is a steel bent, and there is a stone pier at the spot where the plate girder and river span meets.

Overall, the historic integrity of the bridge appears to be good. The variety of span types, variety of features crossed, and length of the bridge makes this one of the most complex and noteworthy heritage bridges on southwestern Ontario railways.

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Photo Galleries and Videos: London North Branch Railway Bridge

 
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Maps and Links: London North Branch Railway Bridge

Coordinates (Latitude, Longitude):

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