Image
Caisson for Mackinac Bridge launch
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Collection(s)
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Additional/Alternative Titles
Title
Caisson for Mackinac Bridge launch
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| Description / Synopsis |
Description / Synopsis
The first section of the tower caissons were constructed at Alpena, MI, launched from the beach and towed by tugboat to the construction site 90 miles to the Northwest. The "soil" was so hard that dynamite was used to break it up so drag lines could dig it out. |
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Subject Topic
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Geographic Subject
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| Origin Information |
Origin Information
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| Extent |
Extent
1 item
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Physical Form
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| Digital Origin |
Digital Origin
digitized other analog
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Related Item
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| Note |
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| Physical Location |
Physical Location
Superiorland Library Cooperative
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| Rights Statement |
Rights Statement
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Cite this
| Language |
English
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| Name |
Caisson for Mackinac Bridge launch
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| Authored on |
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| MIME type |
image/jpeg
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| Width |
1047px
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| Height |
750px
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| Media Use |