This topic is trying to identify the three-digit interstates that run on a former routing of their 2di parent.
Here are some examples that I can think of to get this started:
1) I-376 in Pittsburgh, PA runs on a former routing of I-76
2) I-480 near Cleveland, OH was once signed as I-80
3) I-76 and I-676 have swapped routes in Philadelphia, PA.
Plus, I have a future one.
When the I-95/PA turnpike interchange is complete and I-95 is routed onto the PA and NJ turnpikes. The current I-95 from there to Trenton will become I-195. (at least for now :sombrero:)
What other ones are there?
Quote from: froggie on April 30, 2009, 08:50:14 PM
Well you have the opposite in your own backyard: I-65 running along what was originally I-265.
I didn't mention that because that is the reverse of what I mentioned. That's a parent 2di running on a former 3di routing.
But, if everyone wants to discuss those as well. I'm game.
I-395 on I-95's old route through Washington, DC
I-270 on I-70S from I-70 to I-495
I-275 on I-4's and I-75's old route in Tampa/St. Petersburg, FL
I-279 on I-79's former route on the Parkway West in Pittsburgh
When it is finally extended, I-376 on I-76's former route on the same expressway.
I-96 and I-196 flip flopped routes around 1963. Here are the details:
http://www.michiganhighways.org/listings/MichHwys90-99.html (http://www.michiganhighways.org/listings/MichHwys90-99.html)
http://www.michiganhighways.org/listings/MichHwys180-199.html (http://www.michiganhighways.org/listings/MichHwys180-199.html)
IIRC
I-290 in Chicagoland once was signed as I-90.
I-95 now rides on old I-495 in Maine. I-295 runs on old I-95.
Sykotyk
I-80 in Sacramento runs on the old I-880 route. Biz-80 is now the old I-80 routing in CA's state capital.
Wasn't there a plan in place at one time to route I-94 in Milwaukee along I-894, and then extend I-794 west along the current routing of I-94?
I-275 in Knoxville was I-75 before I-75 was rerouted around the city on I-640.
In Memphis, when the route through Overton Park was defeated, TnDOT routed I-40 over the route of I-240 on the northern side of the city.
I-495 DE was for a couple of years I-95 due to reconstruction through Wilmington - current/original I-95 was briefly I-895.