Discuss Detroit » Archives - January 2008 » Det tunnel under the river « Previous Next »
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Little_buddy
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Username: Little_buddy

Post Number: 53
Registered: 03-2006
Posted on Wednesday, January 30, 2008 - 5:10 pm:   Edit PostDelete Post   Move Post (Moderator/Admin Only)

How far from the top of the tunnel to the bottom of the river.
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Homer
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Username: Homer

Post Number: 260
Registered: 08-2004
Posted on Wednesday, January 30, 2008 - 5:15 pm:   Edit PostDelete Post   Move Post (Moderator/Admin Only)

From Wikipedia

The Detroit–Windsor Tunnel was constructed of sections of steel tube floated into place and sunk into a trench dug in the river bottom. The river section of the tunnel was connected to bored tunnels on both banks. The tubes were then covered over in the trench by 4 to 20 feet (1.2 m to 6.1 m) of mud. Because the tunnel essentially sits on the river bottom, there is a wide no-anchor zone enforced on river traffic.
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Burnsie
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Username: Burnsie

Post Number: 1273
Registered: 11-2003
Posted on Wednesday, January 30, 2008 - 6:12 pm:   Edit PostDelete Post   Move Post (Moderator/Admin Only)

Which tunnel are we talking about? The highway or the railroad? (The railroad is actually 2 tunnels side by side, BTW).
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One_shot
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Username: One_shot

Post Number: 351
Registered: 11-2003
Posted on Wednesday, January 30, 2008 - 9:10 pm:   Edit PostDelete Post   Move Post (Moderator/Admin Only)

I'm confused. If the tunnel was placed in a TRENCH dug on the river bottom and covered by 4-20 feet of mud, then how can the tunnel "essentially be sitting on the river bottom"?
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Clark1mt
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Username: Clark1mt

Post Number: 123
Registered: 06-2005
Posted on Wednesday, January 30, 2008 - 9:11 pm:   Edit PostDelete Post   Move Post (Moderator/Admin Only)

I'm pretty sure this is meant to be a comparison to a bored tunnel
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Raptor56
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Username: Raptor56

Post Number: 251
Registered: 05-2007
Posted on Wednesday, January 30, 2008 - 10:32 pm:   Edit PostDelete Post   Move Post (Moderator/Admin Only)

A little history of the tunnel with a nice little picture
http://www.dwtunnel.com/histor y.html

More history and old photos from the detroit news
http://forums.detnews.com/hist ory/story/index.cfm?id=51&cate gory=locations
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Novine
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Username: Novine

Post Number: 411
Registered: 07-2007
Posted on Wednesday, January 30, 2008 - 11:36 pm:   Edit PostDelete Post   Move Post (Moderator/Admin Only)

"I'm confused. If the tunnel was placed in a TRENCH dug on the river bottom and covered by 4-20 feet of mud, then how can the tunnel "essentially be sitting on the river bottom"?"

It's all relative. Is it sitting on the river bottom? No. But drop an anchor from a Great Lakes freighter into that 4 - 20 feet of mud over the tunnel and it will be as if the anchor was dropped onto the tunnel itself.

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