Monday, March 18, 2024

1815,1911,2024+1932,2008+1980s I-68/US-40 Bridges over Casselman River near Grantsville, MD

1815: (Archived Bridge Hunter broken link; Historic Bridges; HAERSatellite, 80 photos)
Dennis Eyler commented on the following post
Here's a similar example in the US which has 3 generations of Federal highway bridges over the Casselman River in Western Maryland, covering 200 years.

Highway Engineering Discoveries posted
Three Different Period Bridges Seen Together
Percy Kotwal: Where’s this to be seen?
Michal Němeček: Percy Kotwal Xiangxi, China
Dennis DeBruler: Michal Němeček I looked at the main river in this city, but I did not find them.
https://www.google.com/maps/@28.3141504,109.7380404,3060m/data=!3m1!1e3?entry=ttu

Dennis Eyler commented on his comment8
Here's a view of the Casselman River Bridge built in 2015 [1815]. It is closed to vehicular traffic now.
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Robert Aberegg, Oct 2023

dnr
It is closed pending planed repairs in 2024.

Daria Poff, Feb 2019, cropped
"It is one of the oldest surviving bridges in the nation."

Darla Poff, Feb 2018, cropped

Shirley Winget-Penrod, Jan 2019

Erick Michaels, Oct 2018, cropped

Looking from the 1815 bridge to the 1932 bridge with a semi-truck trailer peaking through the truss from the 1980s bridge.
Shirley Winget-Penrod, Jan 2019
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1932


Note the 1815 bridge in the background.
Street View, Aug 2022

The truss is skewed.
Street View, Jul 2023

The trusses look modern because there are very few built-up members. As HistoricBridges points out, the sway braces use V-lacing and the bottom of the compression chords use lattice.
Street View, Jul 2023
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1980s


I found a big enough gap in the trees to confirm that the interstate bridge is a steel-girder bridge.
Street View, Jul 2023

The only other street view was back in 2008. Those old views make you appreciate how much the street view cameras have improved. Like another photo of these bridges, this view is a reminder that interstate roads attract billboards.
Street View, Oct 2008

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