Carson: (
Archived Bridge Hunter; Bridge Hunter returns 403;
Historic Bridges; Satellite)
PC&Y: (Archived Bridge Hunter is a mess; Bridge Hunter returns 403;
Historic Bridges; Satellite)
The above described shared ownership of the railroad bridges explains the ArchivedBridgeHunter_PC&Y mess. I think there are six entries for the two bridges. It is hard to tell because I kept getting 429s and had to translate archived Google Maps links to real links. I think they have an entry for PC&Y, PL&E and Pennsy for each of the trusses. BridgeHunter being totally broke didn't help. Fortunately, HistoricBridges has entries for the road and railroad bridges.
The blue pony truss bridge is the road bridge and the dark through trusses are the railroad bridge.
Two of the four tracks are still in service and are now owned by CSX.
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HistoricBridges_Carson
"The Carson Street Bridge was originally built as a pony truss, and in 1978 overhead bracing was added. The braces clearly look out of place and context on the structure, however, it is worth noting that imagining the bridge without those braces one realizes this was one tall pony truss. Given this information, the bridge could perhaps be viewed as a historically significant structure that pushed the limits of the truss bridge, building the largest possible pony truss. Clearly, these limits were pushed too far for the comfort of 1970s engineers."
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Dave Kuntz Drone Photos
posted five photos with the comment: "In McKees Rocks, PA, in sight of the Pittsburgh Skyline, Chartiers Creek dumps into the mighty Ohio River. Here we see 4 tracks have been reduced to 2, leaving an entirely unused span sandwiched between the active tracks and a road bridge."
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