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( Bridge Hunter ,  Historic Bridges , Satellite ) Note the far (Kentucky side) span is longer. At the time, it was a record long 720' simple span. The other four spans are "just" 551'. 20150821 4227 sternwheel-part4  has a couple of photos of the bridge. That page also has seven facts including: "At 708 feet the bridge contains the longest pin-connected simple through truss span in the world." Birds-Eye View David Honan David Honan 20171230 9402c, east elevation taken from the I-24 Bridge (I still haven't figured out why my bridge pictures are typically so hazy.) First  of nine p hotos in  C Hanchey's Illinois Flickr Album , License: Creative Commons Attribution (CC BY-NC) I have noticed that when you take I-57 to Kentucky you pass under a BN overpass in the southern part of the state. This surprised me when I first saw it because the motto of the Chicago, Burlington, and Quincy was "Everywhere West." Not South. Like the Milwaukee Road, CB...

The dam was removed in 1955 after 1950 and 1954 floods made it a danger to fisherman and canoeists. So I can't provide a satellite image of it. According to John Weeks , it had a head of 17'. I learned about this dam because it was part of a tour of dams taken by two of the engineers for the Chicago Drainage Canal (now the Chicago Sanitary & Ship Canal). They studied the 80'  bear trap gate at this dam to refine their design of a 160' bear trap gate for the CS&SC control structure . [ Building the Canal to Save Chicago by Richard Lanyon, p55] The St. Croix River was like the Muskegon River in that a lumber industry used it to float logs from the forest down to saw mills. Another similarity is that the dams on the rivers use a bear trap gate to pass the logs over the top. When the Nevers Dam was built in 1889, it was the largest wooden dam in the world, and the 80' bear trap gate was the longest gate in the world. The wooden piers were built on top of pile...

( Bridge Hunter , Historic Bridges , HAER ,  Satellite ) P&LE = Pittsburgh & Lake Erie Railroad Photo from HAER PA,4-BEAV,1--1  from pa3716 One of 26 images  posted by Mike Brady [Many of the images show the stresses calculated for each member of the truss.] Pictures are of the original Stress sheet of the P&LE cantilever bridge at Monaca - Beaver PA . Appears to be drawn on vellum type paper using a ink well pen. All of the math about the bridge is here. Live load,dead load, impact load and wind load Date is Jan. 31, 1908. Bought this on eBay around 20 years ago. Was unaware at the time of purchase of what I was getting. Wow, when I actually received it. Total calculated design load on one of the main bearings is 11,994.000 or 12 million pounds or ( 6 thousand tons). One of 26 images  posted  by Mike Brady Photo taken by Bob Harris in May 2012 from Bridge Hunter ( new window ) Mark Arnold posted five photos with the comment: " CSX's Ohio River cross...

( 1928 Truss Bridge Hunter , $68.2m Girder Bridge Hunter , Historic Bridges , John A. Weeks III ,  http://www.champclarkbridge.com/ ,  Satellite ) Another through truss bridge is being lost, this time to a steel girder bridge. John reports that the bridge is structurally sound and should last at least another 30 years. Evidently Missouri can afford to replace a bridge just because the lanes are too narrow. It seems Illinois can't afford to do anything. In 2005, it was repainted from green to grey. So Missouri can also afford to throw away paint. John A. Weeks III Photo by Steve Lombardi, May 2018 [The new bridge is upstream.] "One of the spans collapsed during construction and had to be rebuilt." [Historic Bridges] "This photos was taken when the bridge was being constructed. The collapse was caused by faulty false work. One worker was killed in this collapse."  [Jeremy Ruble in Bridge Hunter] On Bridge Hunter, Lisa included two photos with her comment: "Fi...