Moran Township near St. Ignace in Mackinac County, Michigan — The American Midwest (Great Lakes)

Mackinac Bridge, Michigan

National Historic Civil Engineering Landmark

Photographed by Joel Seewald, June 11, 2017

1. Mackinac Bridge, Michigan Marker

Inscription. Designed by David B. Steinman, and representing a new level of aerodynamic stability in suspension bridges for its time, the Mackinac Bridge was the first suspension bridge to incorporate specific design features to manage the forces imposed on it by winds, construction of "Mighty Mac" took over three years in a demanding climate, and its completion made all-weather travel between Michigan's two regions possible. The five-mile bridge, including approaches, was the world's longest suspension bridge between cable anchorages (8,614 feet) at the time of its construction.

Opened to Traffic: November 1, 1957

Erected 2010 by American Society of Civil Engineers.

Topics and series. This historical marker is listed in this topic list: Bridges & Viaducts. In addition, it is included in the ASCE Civil Engineering Landmarks series list. A significant historical date for this entry is November 1, 1957.

Location. 45° 50.816′ N, 84° 43.62′ W. Marker is near St. Ignace, Michigan, in Mackinac County. It is in Moran Township. It can be reached from Boulevard Drive. The marker can be seen from the parking lot in Bridge View Park, on the observation

Paid Advertisement

Click or scan to see
this page online

building. Touch for map. Marker is in this post office area: Saint Ignace MI 49781, United States of America. Touch for directions.

Regionally, this marker is on Michigan’s Upper Peninsula

and on the Straits of Mackinac.

It is also in the American Midwest.

Globally, it is in North America,

in the Great North Woods,

on the Great Lakes,

in the Western Hemisphere,

in the Western World,

and in the Anglosphere.

Historically, it finds itself in what was once the Viceroyalty of New France

and also the Northwest Territory.

Other nearby markers. At least 8 other markers are within 2 miles of this marker, measured as the crow flies: Prentiss M. Brown, Michigan Lawyer, Mackinac Visionary (here, next to this marker); Mackinac Bridge Monument (a few steps from this marker); South Tower Fog Bell (a few steps from this marker); David B. Steinman (within shouting distance of this marker); Honoring James P. Pitz (approx. 0.3 miles away); Mackinac Straits (approx. 0.3 miles away); A Trail to Adventure (approx. 0.3 miles away); Veterans Memorial (approx. 1.2 miles away). Touch for a list and map of all markers in St. Ignace.

Photographed by Joel Seewald, June 11, 2017

2. Mackinac Bridge, Michigan Marker

Marker is on the left side of the observation building, between the windows.

Mackinac Bridge image. Click for full size.

Photographed by Joel Seewald, June 11, 2017

3. Mackinac Bridge

Michigan's Top Ten Civil Engineering Projects of the 20th Century
Selected No. 1
Michigan Section, American Society of Civil Engineers

Credits. This page was last revised on June 27, 2025. It was originally submitted on July 18, 2017, by Joel Seewald of Madison Heights, Michigan. This page has been viewed 442 times since then and 15 times this year. Photos: 1, 2, 3. submitted on July 18, 2017, by Joel Seewald of Madison Heights, Michigan.