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Interstates that connect to I-80 in Nebraska

Started by Roadwarriors79, October 21, 2018, 12:09:30 PM

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Roadwarriors79

How many other states do this? So I-80 is the major 2di in Nebraska. I noticed that where it interchanges with I-76 (exit 102), I-180 (exit 401), I-680 (exit 446) and I-480 (exit 454), the corresponding interstate uses the I-80 exit number for its junction with I-80. This could be just because they all end at I-80. The only other place I have seen this before was in New Jersey, where I-195 meets I-295 at exit 60 on I-295. (Recently, I-195 had its exit numbers changed at I-295 from exit 60 A-B to exit 1 A-B.)


US 89

Utah has one instance of this, but I think it was an accident: it's on the southbound US 89 exit to I-84 westbound. 87 is the I-84 milepost for this junction; a proper US 89 mile-based exit would be 406 or 406B. It's not out of the question either, since 89 has exits 404 and 405 just to the south.

The reason I think it was an accident is that none of the other 89-to-84 exit ramps are numbered as anything, and no other signage for this ramp shows an exit number.

ilpt4u

At I-24's Northwestern Terminus @ I-57 in Southern IL, the exit is I-57 Exit 44 and I-24 Exit 44 A/B

Its I-24 Mile Marker Zero, so it is certainly using the I-57 Exit numbering on the I-24 approach

ErmineNotyours

I-90's exit to I-405 in Washington is 10, but I-405's exit is 11, so they missed it by one!  This is impressive, because they both start at or near junctions with I-5.  90 goes almost straight east, while 405 goes east for three miles, then curves north for about eight miles.  I-90's mileage actually starts with an at one time proposed interchange with the Alaska Way Viaduct which never happened, but you wouldn't think it would make that much difference.

mrose

The 80/180/34 cloverleaf near Lincoln has the two 80 to 180/34 movements signed as 401A and 401B, while the two 180/34 to 80 movements are signed as 401C and 401D.

As a child I went through this interchange regularly without thinking it was unusual... only now so many years later has it actually occurred to me.



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