Front:
The Mackinac Bridge
Center Span
Back:
SK8033
1 -
Center Span
MACKINAC BRIDGE
The center span of a five-mile bridge being con-
structed across the Straits of Mackinac, connecting
Michigan's two great peninsulas at Mackinaw City
on the lower, and St. Ignace on the upper.
Designed by Dr. D. B. Steinman, this bridge has been
engineered to withstand many times the recorded
stresses of ice pressure, wind velocity, gravity, and
so forth.
Overall length of bridge is 5 miles, has four lanes
for traffic. Center span 3800 feet long between two
565-foot towers, water clearance of 150 feet. Con-
struction started in May 1954, scheduled for opening
in 1957.
Pub. by the Hiawatha Card Co., P. O. Box 56, Ypsilanti, Mich.
A"Shini Colot" by "Colourpicture",
Boston 15, Mass, U.S.A.
