If there is a thread on here, please post the link. IIRC, I 110 in Mississippi is 4-5 miles in length. Are there any shorter 3dis?
Just off the top of my head, I believe I-189 in Vermont is less than 2 miles long.
http://www.kurumi.com/roads/3di/long3di.html
0.70 miles - I-878, New York. Not signed as an interstate.
0.83 miles - I-315, Montana. Not signed as an interstate.
1.06 miles - I-375, Michigan. The nation's (current) shortest signed interstate.
1.09 miles - I-180, Wyoming. The only interstate that is not a freeway.
1.12 miles - I-895, New York.
1.20 miles - I-194, North Dakota.
1.21 miles - I-587, New York.
1.29 miles - I-395, Florida.
1.34 miles - I-375, Florida.
1.39 miles - I-115, Montana.
1.40 miles - I-345, Texas.
1.44 miles - I-175, Florida.
1.49 miles - I-189, Vermont.
1.50 miles - I-705, Washington State.
1.57 miles - I-579, Pennsylvania. Was 1.30 miles in 1998.
1.67 miles - I-381, Virginia. Was 1.17 miles in 1998; the official endpoint(s) changed.
1.98 miles - I-395, Maryland. In 1998, this was the shortest signed interstate at 0.72 miles. But more recent federal highway logs consider I-395 to be nearly 2 miles long.
http://en.wikipedia.org/wiki/Interstate_380_(California)
I-380 in San Bruno to SFO is 1.67 Miles
http://en.wikipedia.org/wiki/California_State_Route_480
I-480 or CA-480 was very short because the Western freeway never existed.
http://en.wikipedia.org/wiki/Interstate_980
I-980 is 2 miles long in Oakland.
http://en.wikipedia.org/wiki/Interstate_238
I-238 is 2.1 miles long in Hayward.
http://en.wikipedia.org/wiki/Interstate_110_(Texas)
Theres the I-110 Freeway in Texas its 0.89 Miles
http://en.wikipedia.org/wiki/Interstate_535
Its 2.7 miles in Minnesota.
http://en.wikipedia.org/wiki/Interstate_335_(Minnesota)
its 2.74 miles long.
I-124 (unsigned) in Chattanooga, TN is 2 miles long.
http://en.wikipedia.org/wiki/Interstate_124
Quote from: bing101 on November 18, 2014, 10:49:30 AM
http://en.wikipedia.org/wiki/Interstate_110_(Texas)
Theres the I-110 Freeway in Texas its 0.89 Miles
http://en.wikipedia.org/wiki/Interstate_535
Its 2.7 miles in Minnesota.
http://en.wikipedia.org/wiki/Interstate_335_(Minnesota)
its 2.74 miles long.
I-335 in Minnesota? It is zero miles because it was never built. :-P
http://www.ajfroggie.com/roads/minnesota/cancelled/i335.htm
Is there any I even xx loops longer than I 275 around Cincinnati Ohio. IIRC its 84 miles in length.
Quote from: robbones on November 18, 2014, 01:20:07 PM
Is there any I even xx loops longer than I 275 around Cincinnati Ohio. IIRC its 84 miles in length.
IIRC that is
the longest beltway.
Also, there are too many short 3dis to count. Off the top of my head, some
super short 3dis are I-189 in Burlington, VT (as mentioned earlier by Zeffy), I-175 & I-375 in St. Petersburg, FL, I-516 in Savannah, GA, and more.
Quote from: robbones on November 18, 2014, 01:20:07 PM
Is there any I even xx loops longer than I 275 around Cincinnati Ohio. IIRC its 84 miles in length.
I-435 in Kansas City comes close with 80 miles, but I'm pretty sure I-275 is the longest loop Interstate.
I'm pretty sure that any 3di that's just a glorified set of ramps is a rather short one.
About long beltways: I-495 is a half beltway around Boston (the other half is the ocean), and it is 120 miles long.
I-194 in Bismarck/Mandan is unsigned.
i think Kurumi's link suffices
Quote from: SteveG1988 on November 18, 2014, 09:41:24 AM
http://www.kurumi.com/roads/3di/long3di.html
0.70 miles - I-878, New York. Not signed as an interstate.
0.83 miles - I-315, Montana. Not signed as an interstate.
1.06 miles - I-375, Michigan. The nation's (current) shortest signed interstate.
1.09 miles - I-180, Wyoming. The only interstate that is not a freeway.
1.12 miles - I-895, New York.
1.20 miles - I-194, North Dakota.
1.21 miles - I-587, New York.
1.29 miles - I-395, Florida.
1.34 miles - I-375, Florida.
1.39 miles - I-115, Montana.
1.40 miles - I-345, Texas.
1.44 miles - I-175, Florida.
1.49 miles - I-189, Vermont.
1.50 miles - I-705, Washington State.
1.57 miles - I-579, Pennsylvania. Was 1.30 miles in 1998.
1.67 miles - I-381, Virginia. Was 1.17 miles in 1998; the official endpoint(s) changed.
1.98 miles - I-395, Maryland. In 1998, this was the shortest signed interstate at 0.72 miles. But more recent federal highway logs consider I-395 to be nearly 2 miles long.
What about I-190 (SD)? 1.72 lovely miles.
Quote from: Alps on November 18, 2014, 11:09:53 PM
i think Kurumi's link suffices
Yes. Yes it does.
Quote from: SD Mapman on November 18, 2014, 11:52:47 PM
Quote from: SteveG1988 on November 18, 2014, 09:41:24 AM
http://www.kurumi.com/roads/3di/long3di.html
0.70 miles - I-878, New York. Not signed as an interstate.
0.83 miles - I-315, Montana. Not signed as an interstate.
1.06 miles - I-375, Michigan. The nation's (current) shortest signed interstate.
1.09 miles - I-180, Wyoming. The only interstate that is not a freeway.
1.12 miles - I-895, New York.
1.20 miles - I-194, North Dakota.
1.21 miles - I-587, New York.
1.29 miles - I-395, Florida.
1.34 miles - I-375, Florida.
1.39 miles - I-115, Montana.
1.40 miles - I-345, Texas.
1.44 miles - I-175, Florida.
1.49 miles - I-189, Vermont.
1.50 miles - I-705, Washington State.
1.57 miles - I-579, Pennsylvania. Was 1.30 miles in 1998.
1.67 miles - I-381, Virginia. Was 1.17 miles in 1998; the official endpoint(s) changed.
1.98 miles - I-395, Maryland. In 1998, this was the shortest signed interstate at 0.72 miles. But more recent federal highway logs consider I-395 to be nearly 2 miles long.
What about I-190 (SD)? 1.72 lovely miles.
Quote from: Alps on November 18, 2014, 11:09:53 PM
i think Kurumi's link suffices
Yes. Yes it does.
I need to proof it, though... Texas I-110 (0.92 mi) should be there, for example.
Quote from: 1 on November 18, 2014, 02:54:47 PM
About long beltways: I-495 is a half beltway around Boston (the other half is the ocean), and it is 120 miles long.
That would make it the second-longest 3di, after I-476 (a spur that serves Scranton/Wilkes-Barre, Allentown and the western Philadelphia suburbs) which clocks in at 129 miles.
Quote from: Henry on November 19, 2014, 09:36:49 AM
Quote from: 1 on November 18, 2014, 02:54:47 PM
About long beltways: I-495 is a half beltway around Boston (the other half is the ocean), and it is 120 miles long.
That would make it the second-longest 3di, after I-476 (a spur that serves Scranton/Wilkes-Barre, Allentown and the western Philadelphia suburbs) which clocks in at 129 miles.
Only because I-476 ate PA 9 for lunch in 1996.
Quote from: SteveG1988 on November 18, 2014, 09:41:24 AM
http://www.kurumi.com/roads/3di/long3di.html
1.67 miles - I-381, Virginia. Was 1.17 miles in 1998; the official endpoint(s) changed.
From where to where?
Virginia took the VA 381 signage down quite some time ago, but when it still existed, the transition point was not the traffic light at Keys Street, but at a point north of there, in the curve near where Piedmont Avenue makes its 90-degree turn.
Given the existence of I-180 in Wyoming, there is precedent for designating and signing I-381 all the way to Lee Highway.
Quote from: sbeaver44 on November 19, 2014, 12:35:56 PM
Quote from: Henry on November 19, 2014, 09:36:49 AM
Quote from: 1 on November 18, 2014, 02:54:47 PM
About long beltways: I-495 is a half beltway around Boston (the other half is the ocean), and it is 120 miles long.
That would make it the second-longest 3di, after I-476 (a spur that serves Scranton/Wilkes-Barre, Allentown and the western Philadelphia suburbs) which clocks in at 129 miles.
Only because I-476 ate PA 9 for lunch in 1996.
The I-495 in MA ate most of MA 25 during the 1980s.
Quote from: PHLBOS on November 19, 2014, 01:52:55 PM
Quote from: sbeaver44 on November 19, 2014, 12:35:56 PM
Quote from: Henry on November 19, 2014, 09:36:49 AM
Quote from: 1 on November 18, 2014, 02:54:47 PM
About long beltways: I-495 is a half beltway around Boston (the other half is the ocean), and it is 120 miles long.
That would make it the second-longest 3di, after I-476 (a spur that serves Scranton/Wilkes-Barre, Allentown and the western Philadelphia suburbs) which clocks in at 129 miles.
Only because I-476 ate PA 9 for lunch in 1996.
The I-495 in MA ate most of MA 25 during the 1980s.
Actually, I-495 was extended to I-195 in Wareham in 1975. See http://commons.wikimedia.org/wiki/File:AASHTO_USRN_1975-06-17.pdf
Quote from: roadman on November 19, 2014, 02:01:54 PM
Quote from: PHLBOS on November 19, 2014, 01:52:55 PM
Quote from: sbeaver44 on November 19, 2014, 12:35:56 PM
Quote from: Henry on November 19, 2014, 09:36:49 AM
Quote from: 1 on November 18, 2014, 02:54:47 PM
About long beltways: I-495 is a half beltway around Boston (the other half is the ocean), and it is 120 miles long.
That would make it the second-longest 3di, after I-476 (a spur that serves Scranton/Wilkes-Barre, Allentown and the western Philadelphia suburbs) which clocks in at 129 miles.
Only because I-476 ate PA 9 for lunch in 1996.
The I-495 in MA ate most of MA 25 during the 1980s.
Actually, I-495 was extended to I-195 in Wareham in 1975. See http://commons.wikimedia.org/wiki/File:AASHTO_USRN_1975-06-17.pdf
Nonetheless, it still
ate most of MA 25. The I-495 extension between I-95 & MA 24 didn't become reality until 1982 and MA 25 was still signed between MA 24 & I-195 until 1984-85.
Quote from: kurumi on November 19, 2014, 12:58:19 AM
Quote from: SD Mapman on November 18, 2014, 11:52:47 PM
Quote from: SteveG1988 on November 18, 2014, 09:41:24 AM
http://www.kurumi.com/roads/3di/long3di.html
0.70 miles - I-878, New York. Not signed as an interstate.
0.83 miles - I-315, Montana. Not signed as an interstate.
1.06 miles - I-375, Michigan. The nation's (current) shortest signed interstate.
1.09 miles - I-180, Wyoming. The only interstate that is not a freeway.
1.12 miles - I-895, New York.
1.20 miles - I-194, North Dakota.
1.21 miles - I-587, New York.
1.29 miles - I-395, Florida.
1.34 miles - I-375, Florida.
1.39 miles - I-115, Montana.
1.40 miles - I-345, Texas.
1.44 miles - I-175, Florida.
1.49 miles - I-189, Vermont.
1.50 miles - I-705, Washington State.
1.57 miles - I-579, Pennsylvania. Was 1.30 miles in 1998.
1.67 miles - I-381, Virginia. Was 1.17 miles in 1998; the official endpoint(s) changed.
1.98 miles - I-395, Maryland. In 1998, this was the shortest signed interstate at 0.72 miles. But more recent federal highway logs consider I-395 to be nearly 2 miles long.
What about I-190 (SD)? 1.72 lovely miles.
Quote from: Alps on November 18, 2014, 11:09:53 PM
i think Kurumi's link suffices
Yes. Yes it does.
I need to proof it, though... Texas I-110 (0.92 mi) should be there, for example.
How About I-478 (Unsigned) NY Brooklyn Battery Tunnel
Quote from: hbelkins on November 19, 2014, 12:46:32 PM
Quote from: SteveG1988 on November 18, 2014, 09:41:24 AM
http://www.kurumi.com/roads/3di/long3di.html
1.67 miles - I-381, Virginia. Was 1.17 miles in 1998; the official endpoint(s) changed.
From where to where?
Virginia took the VA 381 signage down quite some time ago, but when it still existed, the transition point was not the traffic light at Keys Street, but at a point north of there, in the curve near where Piedmont Avenue makes its 90-degree turn.
Given the existence of I-180 in Wyoming, there is precedent for designating and signing I-381 all the way to Lee Highway.
I-381 does end at Keys/Church St as shown in the picture below (photo credit, HB Elkins Aug 2003). This is also where the VDOT traffic logs says it ends, and also where route logs back to at least 1979 (next oldest one I have is 1957) say it ends:
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fwww.vahighways.com%2Fva-ends%2Fva300%2Fva381_nt.jpg&hash=c37fffa004fdc3fdea5ac5be2243ff50e9ff5453)
The traffic logs available on virginiadot.org show I-381's mileage change from 1.45 miles in 1985 to 1.67 miles in 1990 as it is today.
My suspicion is that it is the
north end that has shifted slightly. There have been 3 different interchanges at I-81/381 (including a left handed clover from 81 NB to 381 SB in the early 60s) and the footprint of the current one is a little different than the previous one. The bridges on the current interchange are dated 1987.
Mapmikey
Quote from: Mapmikey on November 19, 2014, 09:22:40 PM
I-381 does end at Keys/Church St as shown in the picture below (photo credit, HB Elkins Aug 2003). This is also where the VDOT traffic logs says it ends, and also where route logs back to at least 1979 (next oldest one I have is 1957) say it ends:
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fwww.vahighways.com%2Fva-ends%2Fva300%2Fva381_nt.jpg&hash=c37fffa004fdc3fdea5ac5be2243ff50e9ff5453)
Not sure that sign is still there. Virginia replaced the cutouts at Commonwealth and Lee Highway sometime prior to 2003, and then the references to VA 381 were removed at a later date.
Quote from: hbelkins on November 20, 2014, 10:54:35 AM
Not sure that sign is still there. Virginia replaced the cutouts at Commonwealth and Lee Highway sometime prior to 2003, and then the references to VA 381 were removed at a later date.
Oh the VA 381 signs are definitely still gone. But the pic shows where the transition point was (always was, and still is) which was what the question in the thread was considering.
Quote from: mapman1071 on November 19, 2014, 08:07:37 PM
Quote from: kurumi on November 19, 2014, 12:58:19 AM
Quote from: SD Mapman on November 18, 2014, 11:52:47 PM
Quote from: SteveG1988 on November 18, 2014, 09:41:24 AM
http://www.kurumi.com/roads/3di/long3di.html
0.70 miles - I-878, New York. Not signed as an interstate.
0.83 miles - I-315, Montana. Not signed as an interstate.
1.06 miles - I-375, Michigan. The nation's (current) shortest signed interstate.
1.09 miles - I-180, Wyoming. The only interstate that is not a freeway.
1.12 miles - I-895, New York.
1.20 miles - I-194, North Dakota.
1.21 miles - I-587, New York.
1.29 miles - I-395, Florida.
1.34 miles - I-375, Florida.
1.39 miles - I-115, Montana.
1.40 miles - I-345, Texas.
1.44 miles - I-175, Florida.
1.49 miles - I-189, Vermont.
1.50 miles - I-705, Washington State.
1.57 miles - I-579, Pennsylvania. Was 1.30 miles in 1998.
1.67 miles - I-381, Virginia. Was 1.17 miles in 1998; the official endpoint(s) changed.
1.98 miles - I-395, Maryland. In 1998, this was the shortest signed interstate at 0.72 miles. But more recent federal highway logs consider I-395 to be nearly 2 miles long.
What about I-190 (SD)? 1.72 lovely miles.
Quote from: Alps on November 18, 2014, 11:09:53 PM
i think Kurumi's link suffices
Yes. Yes it does.
I need to proof it, though... Texas I-110 (0.92 mi) should be there, for example.
How About I-478 (Unsigned) NY Brooklyn Battery Tunnel
Believe it or not, it's over 2 miles long; 2.1 or 2.4 depending on where you measure it from.
I-164 is now 0.69 miles long.
Quote from: NE2 on November 20, 2014, 04:40:38 PM
I-164 is now 0.69 miles long.
If its the segment going from US 41 to the curve, they should rename it I - odd x69
https://en.wikipedia.org/wiki/Interstate_H-201
Hawaii has a 4 mile 3di interstate in Oahu.
Quote from: bing101 on November 23, 2014, 04:49:34 PM
https://en.wikipedia.org/wiki/Interstate_H-201
Hawaii has a 4 mile 4di interstate.
Since when is H a digit? :P
I-190 SD (1.72 Mi) and IL (3.07 Mi)
Quote from: Scott5114 on November 23, 2014, 07:52:02 PM
Quote from: bing101 on November 23, 2014, 04:49:34 PM
https://en.wikipedia.org/wiki/Interstate_H-201
Hawaii has a 4 mile 4di interstate.
Since when is H a digit? :P
In the octodecimal numbering system, and any system with more digits than octodecimal. :bigass:
Well, in that case we could renumber both I-35Es to I-862, I-69C to I-1692 and I-69E to I-1694. Both I-35Ws and I-69W would then become I-35 and I-69, respectively. :sombrero:
Quote from: CNGL-Leudimin on November 25, 2014, 10:03:59 AM
Well, in that case we could renumber both I-35Es to I-862, I-69C to I-1692 and I-69E to I-1694. Both I-35Ws and I-69W would then become I-35 and I-69, respectively. :sombrero:
wait what? :awesomeface:
Quote from: SSOWorld on November 26, 2014, 08:23:26 AM
Quote from: CNGL-Leudimin on November 25, 2014, 10:03:59 AM
Well, in that case we could renumber both I-35Es to I-862, I-69C to I-1692 and I-69E to I-1694. Both I-35Ws and I-69W would then become I-35 and I-69, respectively. :sombrero:
wait what? :awesomeface:
YHBT