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State routes created with "useless" overlaps to give a corridor one number

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NE2:
We've seen several examples of this recently: Iowa and Missouri creating 27 for the Avenue of the Saints (though only Iowa continues it along U.S. Routes), Iowa extending 163 to Burlington, and Illinois assigning 110 to their piece of the Chicago-Kansas City corridor. The same has been done with US 400, US 412, and perhaps other U.S. Routes. Are there any older examples?

Brandon:
IL/IA-64 so that they meet at the Sabula-Savanna Bridge.

IL-110, IMHO, is one of the sillier ones.  Why do we need a Chicago-Kansas City Corridor?  We already have I-55 and I-70.

xonhulu:
MSR 789 was definitely one of these, though it's mostly been removed except in WY.

There is also MT 3, supposedly to unify the Billings-to-Great Falls route, which I guess US 87 wasn't adequately doing.

I think there are a lot of examples of this nationwide, but I can't think of too many examples in the western states.

Revive 755:

--- Quote from: Brandon on July 17, 2011, 07:59:00 AM ---IL-110, IMHO, is one of the sillier ones.  Why do we need a Chicago-Kansas City Corridor?  We already have I-55 and I-70.

--- End quote ---

Because I-70 across Missouri is not user friendly and can be pretty unreliable on weekends.  But I'm still not sure why a better numbered couldn't have been used such as 336 or a new IL 88 for the section west/south of Quad Cities.

vdeane:
NY 812 appears to be one, given all the multiplexes it has.

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