Status: Open to traffic
Location: 45.819167,-84.727500
Carries I-75 over Straits of Mackinac
Design: suspension/wire
Design Details: Wire suspension main span, with an assortment of deck truss designs and a piled rock causeway for approaches.
Total Length: 19248.6 Feet
Span Length: 3800.0 Feet
Overview: Suspension bridge over the Straits of Mackinac on I-75 at Mackinaw City
History: Opened Nov. 1, 1957
Built: 1957
Location: Emmet County
View Bridge Information In Wayback Machine
121639
MI-329-1
Photo taken by Historic American Engineering Record
121640
MI-329-2
Photo taken by Historic American Engineering Record
145991
Fog Bell
This is one of the original fog bells. It was removed from the south tower and placed at the visitors center in 2002
Photo taken by Bob Morgan in August 2009
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Inscription on steelworker monument
Plate on the Steelworker Memorial located at the North Shore Visitor's Center.
Photo taken by Bob Morgan in August 2009
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Big Mac at night
View from the lakefront park in Mackinac City.
Photo taken by Bob Morgan in August 2009
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Steelworker Memorial
Located at the Visitor's Center at the north shore.
Photo taken by Bob Morgan in August 2009
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Mackinac Bridge
View from jetty at Mackinac City.
Photo taken by Bob Morgan in August 2009
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05 02A.JPG
Photo taken from the waters of the Straits.
Photo taken by Robert Thompson
175746
Mighty Mac
This is one of my favorite bridges
177648
Photo taken by Todd Walker
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Photo taken by Todd Walker
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Photo taken by Todd Walker
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Photo taken by Todd Walker
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Photo taken by Todd Walker
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Photo taken by Todd Walker
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Photo taken by Todd Walker
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Photo taken by Todd Walker
177660
Photo taken by Todd Walker
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Photo taken by Todd Walker
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Photo taken by Todd Walker
182540
Mackinaw
View from Straits State Park in St. Ingus
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Mackinaw Bridge From The Beach
Scanned picture from the beach looking north.
Photo taken by Michael Miller in October 2008
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Mackinaw Bridge Sunset
Scanned Picture from Mackinac Island
Photo taken by Michael Miller in July 1998
315043
Mackinac Bridge
Snow and the Mackinac Bridge Mackinaw City, Michigan Michigan Sea Grant Extension, Carole Y. Swinehart
Enviromental Protection Agency
315044
Mackinac Bridge
Mackinac Bridge Mackinaw City, Michigan Michigan Travel Bureau
Enviromental Protection Agency
358172
Looking North
Photo taken by Royce and Bobette Haley in July 2016
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South approach-looking NW
Photo taken by Royce and Bobette Haley in July 2016
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Detail
Photo taken by Royce and Bobette Haley in July 2016
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Looking North
Photo taken by Royce and Bobette Haley in July 2016
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South tower
Photo taken by Royce and Bobette Haley in July 2016
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Detail
Photo taken by Royce and Bobette Haley in July 2016
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Detail
Photo taken by Royce and Bobette Haley in July 2016
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Looking SE
Photo taken by Royce and Bobette Haley in July 2016
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Enlarge this photo-all the black specs are the black flies. Not a good season to see the bridge
Photo taken by Royce and Bobette Haley in July 2016
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Looking South
Photo taken by Royce and Bobette Haley in July 2016
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Detail
Photo taken by Royce and Bobette Haley in July 2016
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Detail
Photo taken by Royce and Bobette Haley in July 2016
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Detail
Photo taken by Royce and Bobette Haley in July 2016
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Detail
Photo taken by Royce and Bobette Haley in May 2016
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Detail
Photo taken by Royce and Bobette Haley in May 2016
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Detail
Photo taken by Royce and Bobette Haley in July 2016
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Detail
Photo taken by Royce and Bobette Haley in July 2016
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Detail
Photo taken by Royce and Bobette Haley in May 2016
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South approach-
Photo taken by Royce and Bobette Haley in May 2016
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South abutment
Photo taken by Royce and Bobette Haley in May 2016
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Approach detail
Photo taken by Royce and Bobette Haley in May 2016
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Looking North
Photo taken by Royce and Bobette Haley in May 2016
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South abutment
Photo taken by Royce and Bobette Haley in May 2016
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Approach detail
Photo taken by Royce and Bobette Haley in May 2016
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Approach detail
Photo taken by Royce and Bobette Haley in May 2016
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Approach detail
Photo taken by Royce and Bobette Haley in May 2016
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Approach detail
Photo taken by Royce and Bobette Haley in May 2016
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Looking North
Photo taken by Royce and Bobette Haley in May 2016
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Approach detail
Photo taken by Royce and Bobette Haley in May 2016
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Approach detail
Photo taken by Royce and Bobette Haley in May 2016
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Looking North
Photo taken by Royce and Bobette Haley in May 2016
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Bridge and ferry from Mackinac Island
Photo taken by James Baughn in September 2014
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Cable
Photo taken by James Baughn in June 2017
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Closeup of cable near south anchorage
Photo taken by James Baughn in June 2017
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Driving south at midspan
Photo taken by James Baughn in June 2017
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Freighter passing under as seen from Mackinaw City
Photo taken by James Baughn in June 2017
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Freighter passing underneath
Photo taken by James Baughn in September 2014
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Historical pathway interpretive sign
Photo taken by James Baughn in September 2014
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Labor memorial plaque
Photo taken by James Baughn in September 2012
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Legal milestone plaque
Photo taken by James Baughn in September 2014
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Michigan top engineering project plaque
Photo taken by James Baughn in June 2017
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National civil engineering landmark plaque
Photo taken by James Baughn in September 2014
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No U turns
Photo taken by James Baughn in June 2017
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No tailgating sign
Photo taken by James Baughn in June 2017
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No trespassing sign
Photo taken by James Baughn in June 2017
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North anchorage
Photo taken by James Baughn in September 2014
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North approach
Photo taken by James Baughn in September 2014
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North tower bracing under deck
Photo taken by James Baughn in September 2014
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North tower
Photo taken by James Baughn in September 2014
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Oblique view from west side of visitor center
Photo taken by James Baughn in June 2017
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Official bridge plaque
Photo taken by James Baughn in September 2014
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Partly cloudy weather
Photo taken by James Baughn in September 2014
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South abutment at visitor center
Photo taken by James Baughn in September 2014
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South anchorage
Photo taken by James Baughn in June 2017
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South tower
Photo taken by James Baughn in September 2014
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Steep approach as seen from tollbooth
Photo taken by James Baughn in June 2017
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Steinman plque
Photo taken by James Baughn in September 2012
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Storm rolling in
Photo taken by James Baughn in September 2012
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Sunrise
Photo taken by James Baughn in September 2014
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Tollbooth
Photo taken by James Baughn in June 2017
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Top of north tower
Photo taken by James Baughn in June 2017
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Under stormy clouds
Photo taken by James Baughn in September 2012
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Underneath main span
Photo taken by James Baughn in September 2014
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Underneath south approach next to visitor center
Photo taken by James Baughn in September 2014
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View from Mackinaw City
Photo taken by James Baughn in June 2017
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View from northeast while riding ferry
Photo taken by James Baughn in September 2014
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View from northwest at US 2 roadside park
Photo taken by James Baughn in September 2012
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View from northwest at dusk
Photo taken by James Baughn in September 2014
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Visitor center under bridge
Photo taken by James Baughn in June 2017
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Weather station at midspan
Photo taken by James Baughn in June 2017
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Mackinac Bridge
Photo taken by Richard Doody in 1984
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Mackinac Bridge
Photo taken by Richard Doody in 1984
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Mackinac Bridge
Photo taken by Richard Doody in 1984
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Mackinac Bridge
Photo taken by Richard Doody in 1984
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Mackinac Bridge
Photo taken by Richard Doody in 1984
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Mackinac Bridge
Photo taken by Richard Doody in 1984
424311
Fair Use
490052
Mackinac Bridge
1993, September
Photo taken by GS
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Mackinac Bridge
1993, September, looking south
Photo taken by GS
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Mackinac Bridge
Photo taken by Steve & Judy Yordy
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Mackinac Bridge
Photo taken by Steve & Judy Yordy
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View from Mackinaw City
Photo taken by Josh Schmid in May 2021
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Looking north across bridge
Photo taken by Josh Schmid in May 2021
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North tower from south
Photo taken by Josh Schmid in May 2021
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View from rest area at toll plaza
Photo taken by Josh Schmid in May 2021
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View from northeast
Photo taken by Josh Schmid in May 2021
Status: Open to traffic
Location: 45.373889,-84.960278
Carries US 31/M-68 over Bear Creek
Design: beam/tee
Design Details: Concrete tee beam
Total Length: 264.8 Feet
Span Length: 44.9 Feet
Overview: Concrete tee beam bridge over Bear Creek on US 31/M-68
History: Built 1930
Built: 1930
Location: Emmet County
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467786
Mitchell Street Bridge
Photo taken by Rossograph
467787
Mitchell Street Bridge
1940 view
Photo from Pinterest
467788
Mitchell Street Bridge
Photo from old postcard
Status: Open to traffic
Location: 45.684167,-84.781389
Carries US 31 over Carp Lake River
Design: beam/tee
Design Details: Concrete tee beam
Total Length: 30.8 Feet
Span Length: 30.8 Feet
Overview: Concrete tee beam bridge over Carp Lake River on US 31
History: Built 1933
Built: 1933
Location: Emmet County
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 45.440000,-84.785693
Carries River Street over Crooked River
Design: beam/stringer/steel
Design Details: Steel stringer swing
Total Length: 64.0 Feet
Span Length: 29.9 Feet
Overview: Steel stringer bridge over Crooked River on River Street
History: Built 1986 as a replica for a 1902 swing bridge
Built: 1986
Location: Emmet County
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364754
Alanson Swing Bridge
In operation
Photo taken by Douglas Butler in November 2014
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Photo taken by
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Top
Photo taken by
Status: Replaced by a new bridge
Location: 45.373918,-84.960467
Carries Mitchell Street over Bear River
Design: truss/deck
Design Details: Deck truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Lost Deck truss bridge over Bear River on Mitchell Street
History: Built 1906
Built: 1906
Location: Emmet County
View Bridge Information In Wayback Machine
509244
Mitchell Street Bridge (Old)
view c1927
Photo taken by Geoff Hubbs
Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S - Dismantled and/or in storage. L - Severe loss of historic integrity due to alteration.
