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 Post subject: Re: Railroad Bridges
PostPosted: Wed Sep 08, 2021 5:57 pm 

Joined: Tue Aug 27, 2019 9:48 pm
Posts: 483
Location: Potland, Maine
part 2


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 Post subject: Re: Railroad Bridges
PostPosted: Wed Sep 08, 2021 5:57 pm 

Joined: Tue Aug 27, 2019 9:48 pm
Posts: 483
Location: Potland, Maine
part 3


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 Post subject: Re: Railroad Bridges
PostPosted: Wed Sep 08, 2021 5:58 pm 

Joined: Tue Aug 27, 2019 9:48 pm
Posts: 483
Location: Potland, Maine
part 4


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 Post subject: Re: Railroad Bridges
PostPosted: Wed Sep 08, 2021 5:59 pm 

Joined: Tue Aug 27, 2019 9:48 pm
Posts: 483
Location: Potland, Maine
part 5


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 Post subject: Re: Railroad Bridges
PostPosted: Wed Sep 08, 2021 6:00 pm 

Joined: Tue Aug 27, 2019 9:48 pm
Posts: 483
Location: Potland, Maine
part 6


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 Post subject: Re: Railroad Bridges
PostPosted: Wed Sep 08, 2021 6:01 pm 

Joined: Tue Aug 27, 2019 9:48 pm
Posts: 483
Location: Potland, Maine
part 7


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 Post subject: Re: Railroad Bridges
PostPosted: Wed Sep 08, 2021 6:02 pm 

Joined: Tue Aug 27, 2019 9:48 pm
Posts: 483
Location: Potland, Maine
part 8


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 Post subject: Re: Railroad Bridges
PostPosted: Sun Oct 17, 2021 8:26 am 

Joined: Tue Aug 27, 2019 9:48 pm
Posts: 483
Location: Potland, Maine
I visited the Livermore Falls lenticular truss bridge. Quite a history and still popular with "jumpers".

https://activerain.com/blogsview/441143 ... -hampshire

https://bridgehunter.com/nh/grafton/livermore-falls/

http://livermorefalls.org/wp-content/up ... bridge.pdf


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 Post subject: Re: Railroad Bridges
PostPosted: Tue Oct 19, 2021 12:19 pm 

Joined: Tue Aug 27, 2019 9:48 pm
Posts: 483
Location: Potland, Maine
A pictorial history of the first railroad bridge across the Mississippi River and its three successors
by Curtis C. Roseman

http://www.riveraction.org/bridgehistory


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 Post subject: Re: Railroad Bridges
PostPosted: Tue Oct 19, 2021 5:14 pm 

Joined: Tue Aug 27, 2019 9:48 pm
Posts: 483
Location: Potland, Maine
Bridgeport’s Chicago & Alton Railroad Bridge
by Patrick McBriarty

https://forgottenchicago.com/articles/b ... ad-bridge/


https://historicbridges.org/bridges/bro ... goaltonrr/


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 Post subject: Re: Railroad Bridges
PostPosted: Tue Oct 19, 2021 7:10 pm 

Joined: Sun Aug 22, 2004 7:25 pm
Posts: 2329
Location: The Atlantic Coast Line
A Bollman truss bridge survives in Savage, MD.

https://en.m.wikipedia.org/wiki/Bollman ... oad_Bridge

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 Post subject: Re: Railroad Bridges
PostPosted: Wed Oct 20, 2021 8:28 am 

Joined: Tue Aug 27, 2019 9:48 pm
Posts: 483
Location: Potland, Maine
I wish they would put more of these old bridges on historic lists.


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 Post subject: Re: Railroad Bridges
PostPosted: Wed Oct 20, 2021 9:39 am 

Joined: Tue Aug 27, 2019 9:48 pm
Posts: 483
Location: Potland, Maine
American railroad bridges
by Cooper, Theodore, 1839-1919

https://archive.org/details/americanrai ... ad+bridges


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 Post subject: Re: Railroad Bridges
PostPosted: Wed Oct 20, 2021 5:33 pm 

Joined: Sun Aug 22, 2004 1:51 pm
Posts: 11482
Location: Somewhere east of Prescott, AZ along the old Santa Fe "Prescott & Eastern"
Ironically, all five bridge diagrams you chose to include from Cooper's book were earlier examples of road-only bridges, not railroad bridges, built long before railroads themselves came about in North America. The "Schuylkill Permanent Bridge" by Timothy Palmer is routinely credited by bridge historians as the first covered bridge in the United States, built in 1805. Cooper included them in his book as part of an overview of the development of bridge engineering during the wooden bridge era.

It wasn't until the Town lattice (patented 1820), Long (1830) and Howe (1840) trusses that bridges adequate for rail weights were built, although there were examples of tracks being laid across existing road bridges and horses pulling cars across--most notably the second bridge between Columbia and Wrightsville, Pa., the longest covered bridge built (its predecessor, taken out in an 1832 ice jam, was purportedly a few feet longer). The PRR bought out the Columbia Bridge Co. to secure rights for its replacements.


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