In Oklahoma, there is a 38 span pony truss bridge near Bridgeport over the Canadian River. The Tulsa metro has 2 19 span pony trusses across the Arkansas River (Jenks and Bixby) that are closed to automobiles but open to pedestrians and bicycles. Are there any more pony truss bridges in the country that have more than 3 or 4 spans?
On the Tunica Trace Scenic Byway (Louisiana Highway 66), there is a five-span pony truss from 1949 crossing Bayou Sara, and it's open to auto traffic.
Mulberry River on AR 23 near Cass has 3
I reckon that Oklahoma is the king of multiple span pony trusses. I'm pretty sure that nobody else can beat 19 spans, much less 38 spans.
Here are some night shots of the Jenks bridge, between Jenks and Tulsa over the Arkansas River. This bridge might be former OK 11.
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Ffarm9.staticflickr.com%2F8021%2F7679070908_78fc2d12b6_c.jpg&hash=2a2755ecede143111050863283767efc1d3289d0)
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Ffarm8.staticflickr.com%2F7122%2F7679069596_fa40d7e17f_c.jpg&hash=7293e723a1fcc256499f185196952dc4268014e5)
Here's one with 23 spans:
http://okbridges.wkinsler.com/jackson_county/northforkredbridge2.html
US-10 in Glendive, Montana. 5 trusses.
(//www.aaroads.com/shields/blog/photos/043500.jpg)
Nice bridge, but it's a through truss. Multiple span through trusses are much more common than multiple span pony trusses.
really? even when the number of trusses exceeds about 10? I cannot think of any through trusses longer than that much, while you just posted several pony-truss examples.
Can anyone recommend a good BASIC layman's guide to bridge types and especially components--either on-line or in book form? I do a lot of photography and it would be nice to provide accurate labels instead of "big steel thingie" when I shoot artistic close-ups.
And the 38 pony truss bridge near Bridgeport OK was Route 66. It was built in 1933 (replacing a suspension bridge) and still handles local traffic.
http://pghbridges.com/basics.htm looks reasonable.
The 38 span bridge is on US 281, a major highway.
The info at http://pghbridges.com/basics.htm will do the job. 12 pages and free too. Thanks for that.
This is an 8 spanner:
http://bridgehunter.com/ok/blaine/55230000000000/
Here are a few "large" Pony Spans
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fi624.photobucket.com%2Falbums%2Ftt327%2FSteveG1988%2FTacony%2520Bridge%25202012%2FIMG_20120526_171607.jpg&hash=1462f1439ae007dd6781d45346e770da48349c44)
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fi624.photobucket.com%2Falbums%2Ftt327%2FSteveG1988%2FTacony%2520Bridge%25202012%2FIMG_20120526_172406.jpg&hash=2cd52d68c1d1d2cc1345d72f6bba5ae1821fe1ad)
Tacony Palmyra Bridge: Pony truss approaches,pony truss draw span, through arch main span (or one of the main spans, since the main river channel is under the movable span)
Riverside Delanco Bridge (photos not by me): Swing span with pony trusses
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fimg.groundspeak.com%2Fwaymarking%2Fdisplay%2F31bd06bb-b18c-4e07-9c91-4a4d76c0ba44.JPG&hash=fce58ff02eb1b9b6f933be70e3d8c3da735d1585)
Ben Franklin Bridge (photos not by me): Suspension with a pony truss, 7 lanes of US30 and/or I-676 (depends on who you ask)
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fcommons%2F0%2F00%2FBen_Franklin_Bridge_and_Race_Street_Pier.jpg&hash=670665f47c6e6836502d1bb516c0f7b13d4d5b02)
The point of the thread was to list bridges that are primarily pony truss bridges, not bridges of another type with pony approaches or other elements.