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The Detroit River Tunnel

The Detroit River Tunnel Michigan Trains, Railroad
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Stock #: 203788
Type: Postcard
Era: Divided Back
City: Detroit
State: Michigan (MI)
County: Wayne
Postmark: 1911 Jul-11
PM City: Detroit
PM State: MI
Stamp: 1c
Size: 3.5" x 5.5" (9 x 14 cm)

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Additional Details:
The Detroit river tunnel has the unique distinction of being the only tunnel of this type ever built. It was constructed in sections, all work being done from the surface of the water without the use of compressed air. The tunnel is operated electrically. Construction was started October 1, 1906, and completed July 1, 1910. The length from portal to portal is 1 3/4 miles, and from summit of grade 2 1/2 miles. It was build by the Detroit River Tunnel Company for the M. C. R. R. at a cost of $8,500,000