Forgive me if this has been done...
The word "interstate" involves two or more states. With that in mind, how do, for example, Georgia's I-16 and Louisiana's I-12 get to be called interstates? Another Louisiana interstate, I-49, is expected to expand to other states, so no issues with that.
If you expand it to the "Interstate Highway System", then an interstate that is fully contained within a state is just part of the system.
The same could be said for I-43 in Wisconsin, and at one time, I-39. If you really want to keep the true definition of "interstate", then technically most Interstate spurs and loops should not be called Interstates. There's an exception to every rule.
Quote from: jeffandnicole on February 05, 2014, 01:06:21 AM
If you expand it to the "Interstate Highway System", then an interstate that is fully contained within a state is just part of the system.
And if you expand it further to the "System of Interstate and Defense Highways", that brings in the intra-state Interstates in Hawaii, connecting major military bases in the Honolulu area.
Doesn't work so well for the paper Interstates in Alaska and Puerto Rico (which is neither a state nor connected to one), though each has significant military bases served by some of their Interstates.
yes
Doesn't matter -- it'll never happen.
Quote from: Pete from Boston on February 05, 2014, 08:46:48 AM
Doesn't matter -- it'll never happen.
Right. The changes made across the country would confuse way too many people.
Quote from: dgolub on February 05, 2014, 08:49:44 AM
Quote from: Pete from Boston on February 05, 2014, 08:46:48 AM
Doesn't matter -- it'll never happen.
Right. The changes made across the country would confuse way too many people.
Yeah...
Interstates are all freeways but not all freeways are interstates.
Except of course I-180 in Wyoming.
Even Hawaii has interstates
Almost every Interstate is connected to the main system (but not I-2 right now, or Alaska or Hawaii). So from almost every Interstate, you can get to another state using just the Interstate system.
Alaska and Hawaii should not have them, though.
Quote from: 1 on February 05, 2014, 07:03:57 PM
Almost every Interstate is connected to the main system (but not I-2 right now, or Alaska or Hawaii). So from almost every Interstate, you can get to another state using just the Interstate system.
Alaska and Hawaii should not have them, though.
I wonder, aside from your exceptions, is there any piece of interstate from which you can't get to all other pieces of interstate using just the interstate system? If not, what was the last such piece and when was it connected to the rest of the system? I'm guessing this happens sometimes during construction of new interstates.
Quote from: bzakharin on February 06, 2014, 12:33:05 PM
Quote from: 1 on February 05, 2014, 07:03:57 PM
Almost every Interstate is connected to the main system (but not I-2 right now, or Alaska or Hawaii). So from almost every Interstate, you can get to another state using just the Interstate system.
Alaska and Hawaii should not have them, though.
I wonder, aside from your exceptions, is there any piece of interstate from which you can't get to all other pieces of interstate using just the interstate system? If not, what was the last such piece and when was it connected to the rest of the system? I'm guessing this happens sometimes during construction of new interstates.
I 73/74 in North Carolina was disconnected from the rest of the system from 1997 until 2013, when the US 220 freeway ( I 73/74 Future) from Asheville to Greensboro was upgraded and signed as Interstate.
I-99 doesn't reach I-76 or I-80 yet.
The new section of I-49 in N. Louisiana is isolated. Just about 4 or 5 miles shy of I-220.
Quote from: english si on February 06, 2014, 01:16:24 PM
I-99 doesn't reach I-76 or I-80 yet.
I-99 is a matter of interpretation. While there is no ramp that goes directly from I-99 to I-70/I-76 or vice versa, on I-70/I-76 there is an exit ramp signed for I-99 (without a TO). But it leads to US-220, if I remember correctly, from which you can pick up I-99. I suppose how you feel about it depends on if you feel I-70 concurs with US-30 in Breezewood, or if there is a gap in I-70 there.
Quote from: texaskdog on February 05, 2014, 06:30:16 PM
Interstates are all freeways but not all freeways are interstates.
Except of course I-180 in Wyoming.
Wait, how did some boulevard in Wyoming get designated an interstate?
While we're on the topic, there are also some short parts of I-78 in New Jersey and I-676 in Pennsylvania that are not freeways and have traffic lights.
Some people believe I-587 does not connect to the I- system. I happen to count the circle as part of the NY Thruway interchange.
Quote from: dgolub on February 06, 2014, 07:25:54 PM
Quote from: texaskdog on February 05, 2014, 06:30:16 PM
Interstates are all freeways but not all freeways are interstates.
Except of course I-180 in Wyoming.
Wait, how did some boulevard in Wyoming get designated an interstate?
While we're on the topic, there are also some short parts of I-78 in New Jersey and I-676 in Pennsylvania that are not freeways and have traffic lights.
It was supposed to become one but they decided it didn't make sense, and they didn't have the heart to take it away from them.
Quote from: Scott5114 on February 06, 2014, 06:02:24 PM
Quote from: english si on February 06, 2014, 01:16:24 PM
I-99 doesn't reach I-76 or I-80 yet.
I-99 is a matter of interpretation. While there is no ramp that goes directly from I-99 to I-70/I-76 or vice versa, on I-70/I-76 there is an exit ramp signed for I-99 (without a TO). But it leads to US-220, if I remember correctly, from which you can pick up I-99.
Certainly you can't get onto another interstate from it, as you pass "END" signs.
Plus TO banner south of I-80 (https://maps.google.com/?ll=40.941966,-77.726171&spn=0.005276,0.010568&t=m&z=17&layer=c&cbll=40.941966,-77.726171&panoid=qt3X6N65Sd8FEr1fLFZXGQ&cbp=12,250.34,,0,9.69), TO banner north of I-70/I-76 (GMSV is poor, there might be another) (https://maps.google.com/?ll=40.054736,-78.510929&spn=0.005346,0.010568&t=m&z=17&layer=c&cbll=40.055164,-78.510982&panoid=qUpIa07hprQPbzFt8Kc8kw&cbp=12,355.76,,1,-11.11).
QuoteI suppose how you feel about it depends on if you feel I-70 concurs with US-30 in Breezewood, or if there is a gap in I-70 there.
No it doesn't. I-99 doesn't reach another interstate, but I-70 is continuous through Breezewood (and other similar gaps)...
I'm not concerned at all about the at-grade junctions, but the lack of designation.
I-88's east end (in New York) has an END sign before it touches the Thruway.
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fmaps.googleapis.com%2Fmaps%2Fapi%2Fstreetview%3Fsize%3D400x400%26amp%3Blocation%3D42.786204%2C-74.024152%26amp%3Bheading%3D70%26amp%3Bsensor%3Dfalse%26amp%3Bfov%3D60&hash=c20d2975f8641f4cd720550c51567bdf1fa7cc20)
Quote from: english si on February 06, 2014, 08:21:41 PMCertainly you can't get onto another interstate from it, as you pass "END" signs.
You can't really use that as a guideline, because the "End I-79" sign in West Virginia is nearly a mile away from the actual terminus at I-77. It's closer to the US 119 exit just passed than to the actual end of the interstate.
http://en.wikipedia.org/wiki/List_of_gaps_in_Interstate_Highways#Connection_gaps
I-585.
I believe I-99 officially ends at the interchange between I-99/US 220 and Alt US 220 to the PA Turnpike.
Quote from: dfilpus on February 06, 2014, 12:46:38 PM
Quote from: bzakharin on February 06, 2014, 12:33:05 PM
Quote from: 1 on February 05, 2014, 07:03:57 PM
Almost every Interstate is connected to the main system (but not I-2 right now, or Alaska or Hawaii). So from almost every Interstate, you can get to another state using just the Interstate system.
Alaska and Hawaii should not have them, though.
I wonder, aside from your exceptions, is there any piece of interstate from which you can't get to all other pieces of interstate using just the interstate system? If not, what was the last such piece and when was it connected to the rest of the system? I'm guessing this happens sometimes during construction of new interstates.
I 73/74 in North Carolina was disconnected from the rest of the system from 1997 until 2013, when the US 220 freeway ( I 73/74 Future) from Asheville to Greensboro was upgraded and signed as Interstate.
Are you sure that US 220 is near Asheville? Or did you mean Asheboro?
Quote from: vdeane on February 07, 2014, 12:48:17 AM
I believe I-99 officially ends at the interchange between I-99/US 220 and Alt US 220 to the PA Turnpike.
I thought I had a photo of mile marker 0 on I-99 but I'm having no luck finding it so far.
Quote from: 1 on February 05, 2014, 07:03:57 PM
Almost every Interstate is connected to the main system (but not I-2 right now, or Alaska or Hawaii). So from almost every Interstate, you can get to another state using just the Interstate system.
Alaska and Hawaii should not have them, though.
Doesn't I-2 connect with I-69 C and E? Although I-69C and I-69E in that area don't connect as freeway to other parts of the system, they do as a highway though.
Quote from: texaskdog on February 05, 2014, 06:30:16 PM
Interstates are all freeways but not all freeways are interstates.
Except of course I-180 in Wyoming.
I-69 In southern Texas by I-2.
Quote from: Alps on February 06, 2014, 07:27:25 PM
Some people believe I-587 does not connect to the I- system. I happen to count the circle as part of the NY Thruway interchange.
I also consider I-587 connected by the interchange, but it would feel much more legitimate if its parent acknowledged its existence.