Dennis Weber posted A Look @ Freight Cars on CP's Mississippi River Bridge LaCrescent,Mn. 9-2017 CP Train 471.
Originally, it was steam powered. It was converted to electricity in 1952. It is staffed 24/7. [Historic Bridges] It was rebuilt in 1928. The US Coast Guard condemned it in 1998 and ordered that the swing span be replaced with a lift span. So far the replacement has been just talk. This is one of four bridges that island-hops across the Mississippi and Black Rivers between La Crosse, WI and LaCrescent, MN. "La Crosse is one of three places that the Amtrak Empire Builder passenger train crosses the Mississippi River, with the other two being Hastings, MN, and Little Falls, MN." [Weeks]
I'm not exactly sure where this bridge falls for priority. It's a critical line for oil and freight to and from Chicago. However, it depends on who's paying for the replacement (and it probably won't be the railroad). If it's paid for by the coast guard (who is the only ones who want it replaced, due to the navigation channel), it may be a while. It's behind Clinton, Iowa and likely Dubque, Iowa for replacement due to narrow navigation channels. However, the railroad intends to double track the bridges here and further up the river at Hastings within the next few decades, so it may happen then. [Bridge Hunter, Posted September 23, 2015, by John Marvig]
HeavyMovableStructures, Photo 3 in Home Page scroll [The photo is not identified, but it sure looks like this bridge. Unfortunately, the link I was after, http://www.heavymovablestructures.org/assets/technical_papers/Alteration-of-the-Canadian-Pacific-Railway-Drawbridge.pdf, is broke. Poking around the site quickly comes to "Under Construction" text.]
( Bridge Hunter , 3D Satellite ) I don't normally do yet another steel tied-arch bridge, but when you get a view as unique as this, I went for it. This is "reverse railfan." Specifically, it is a photo from a train instead of a train. And at the bottom is some photos of the cantilever truss that it replaced. William A. Shaffer posted The Jefferson Barracks Bridge at St. Louis, MO (Shot through the window of Amtrak #22 en route to St. Louis) (Photo by William A. Shaffer) By Service Depicted: Other ServiceCamera Operator: SSGT PAUL GRIFFIN - ID:DFST9500065 , Public Domain, Link Roads and farmland in St. Louis area are hard hit by floodwaters. Location: SAINT LOUIS, ILLINOIS (IL) UNITED STATES OF AMERICA (USA) 1993 Westbound bridge built 1984; eastbound bridge built 1990, The navigation channel span is 910'. Missouri State Archives from Flickr The eastbound span of the Jefferson Barracks (I-255) bridge was opened in December 1990, not 1986. It was opened right around the...
( 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...
I've noticed that NYC and Los Angeles have to pay a lot for water supply whereas Chicago has to pay a lot for water removal. I knew NYC dammed rivers in the mountains that are north of the city and then used tunnels (aqueducts) to transport the water into the city. What I did not know, until I studied the Cannonsville Dam , is that they also get water from the Delaware River watershed, which is a lot further away. Since I found this overview map, I'm writing this post to record it. Project Description , page 6 from nyc.gov A NY Times article about a leak in the Cannonsville Dam focuses on the people aspect of the dam. If you look at the map, Deposit, NY is downstream of the Cannonsville Dam. The residents are still bitter that 1000 people, including entire towns, were displaced over a half-century ago when the dam was built. Now they are bitter that they have to worry about the risk of living downstream of a dam. Since a big river flows right through them, they question why N...
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