"Some of New Hampshire's most aesthetically pleasing yet least appreciated structures are stone arch bridges."
NH
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Image Credit:
Courtesy Flickr/Glass_house (CC BY-SA 2.0)
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The Gleason Falls Bridges, built in 1830, stands as a testament to the durability of dry-laid stone arches.
Era_date_from:
1830
2002
The USS Albacore (AGSS-569) represented a radical change in submarine design. The hull was designed with underwater speed as the prime requirement, and it was built with newly developed high-strength steel (HY-80). In addition to these two major innovations, the Albacore served as a test vessel for many new designs in submarine technology so that they could be refined before implementing them into the fleet. Among them was the testing of various control designs and correlation of actual sea-trial performance with that predicted in tow-tank tests.
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USS Albacore
Era_date_from:
1953
2000
People thought inventor Walter Aiken was crazy when he proposed a railway to the top of Mt. Washington. Aiken built a model of the roadbed and track with a cog rail system, but entrepreneur Sylvester Marsh is credited for launching the Cog Railway and bringing Aiken's ideas to fruition.
In 1858 Marsh applied to the New Hampshire Legislature for a charter to build and operate the steam railway and was granted permission in 1859. Legend has it that an amendment was added offering permission to extend the railway to the moon.
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Image Credit:
Courtesy Flickr/Dennis Jarvis (CC BY-SA 2.0)
Image Caption:
Mount Washington Cog Railway
Era_date_from:
1869
1975
People thought inventor Walter Aiken was crazy when he proposed a railway to the top of Mt. Washington. Aiken built a model of the roadbed and track with a cog rail system, but entrepreneur Sylvester Marsh is credited for launching the Cog Railway and bringing Aiken's ideas to fruition.
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The USS Albacore (AGSS-569) represented a radical change in submarine design. The hull was designed with underwater speed as the prime requirement, and it was built with newly developed high-strength steel (HY-80). In addition to these two major innovations, the Albacore served as a…
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"Some of New Hampshire's most aesthetically pleasing yet least appreciated structures are stone arch bridges."
From: Stone Arch Bridges of the Contoocook River Valley, New Hampshire Profiles, May, 1978 by Raymond Gibson
These five bridges, Carr Bridge (mid 1800's), Gleason…
