Mackinac Bridge
Photos
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MI-329-1 Photo taken by Historic American Engineering Record |
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MI-329-2 Photo taken by Historic American Engineering Record |
Facts
- Overview
- Suspension bridge over the Straits of Mackinac on I-75 at Mackinaw City
- Status
- Open to traffic
- History
- Built 1957
- Design
- Wire suspension
- Dimensions
-
Length of largest span: 3,801.0 ft.
Total length: 19,248.6 ft.
Deck width: 47.9 ft.
- Recognition
- Posted to the National Register of Historic Places
- Approximate latitude, longitude
- +45.81917, -84.72750 (decimal degrees)
45°49'09" N, 84°43'39" W (degrees°minutes'seconds") - Approximate UTM coordinates
- 16/676536/5076467 (zone/easting/northing)
- USGS topographic map
- Saint Ignace
- Inventory number
- BH 20027 (Bridgehunter.com ID)
- Inspection (as of 08/2006)
- Deck condition rating: Satisfactory (6 out of 9)
Superstructure condition rating: Very Good (8 out of 9)
Substructure condition rating: Good (7 out of 9)
Appraisal: Functionally obsolete
Sufficiency rating: 56.0 (out of 100) - Average daily traffic (as of 2003)
- 12,398
Sources
- HAER MI-329 - Mackinac Straights Suspension Bridge
- J.R. Manning - thekitchenguy [at] sbcglobal [dot] net
Comments
This bridge remains my "inspiration point" It remains in good hands up north. The Mackinac Bridge Authority goes out of its way to make Big Mac the "jewel" of the Great Lakes
I see my soul and gain inner strength when I look at the Mighty MAC.
I hope more people post pictures of my "inspriration point" on this website. I been fascinated with the Mackinac Bridge since 1971 when I was 3 yrs old. It is a well maintained toll bridge that is lovingly cared for. It is the "crown jewel" of the Great Lakes area. It is not "functionally obsolete" in my eyes. It is a beautiful bridge, and should be an icon like the Golden Gate in California!
A very impressive bridge as the first picture shows from several miles away. Second picture shows the bridge from the north shore
