I've seen a "delicate" pin connected truss bridge before (Big Four over Wabash River), but not one that is still carrying railroad traffic. As discussed below, this one has had some reinforcement.
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| John Stigall shared a photo Mooresville, Indiana, ex PRR bridge, now Indiana Southern Railroad. Notice the unusual hardware, some kind of stiffeners? |
Bruce Carrick Have seen a few with this type of reinforcements.
Barry T. LidstoneBarry and 694 others joined RAILROAD BRIDGES, TRESTLES, TUNNELS AND CUTS within the last two weeks. Give them a warm welcome into your community! Bottom chord reinfocement. Does not appear to extend over end panels maybe they rated adequately?
John StigallJohn and 694 others joined RAILROAD BRIDGES, TRESTLES, TUNNELS AND CUTS within the last two weeks. Give them a warm welcome into your community! Post-tensioning to stiffen the bottom chord for more load capacity?
Robbie Osborne We have some bridges over here like that. I think the Gundagai bridge has links like that.
Barry T. Lidstone This is a popular late 1800's "Pin Connected Through Truss". CNR's St. Lawrence River Bridge is a 2 track version of this type with roadways on each side carried by large cantilver brackets. It's been in service for about 120years. Prior to 1897 it was a single track "Tubular" bridge.
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| John Stigall commented on his posting |
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| John Stigall commented on his posting The support is ummm innovative. Barry T. Lidstone Used to be a common way of raising the span.This is the fixed end, no rollers, May actually be original if they wanted to use the same rotating assembly at both ends, the rail grillage would have been use to compensate for the height of the rollers at the expansion end. Bottom chord reinforcement. Does not appear to extend over end panels maybe they rated adequately? |
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