We all know that I-80/I-90 between Cleveland and Chicago is a long two-route concurrency, as is I-64/I-77 on the WV Turnpike.
That being said, what is the longest concurrency of three routes or more?
I-376 / US-22 / US-30 run concurrent for about 18 miles or so in the Pittsburgh area. That's the first one that comes to mind in PA.
Maybe US 4 / NH 9 / US 202?
US 64-67-167 is concurrent for about 27 miles (Exit 28 to Exit 55). It's actually even signed!
I-39/90/94 From Portage to Madison WI. About 30 miles.
For interstates, it's I-39/90/94 from Madison to Portage in Wisconsin. I-80/90/294 is a former one, albeit a shorter one between the Calumet Expressway (South Holland) and the Indiana Toll Road (Lake Station).
For overall highways, somewhere in Georgia.
What about ME 11 / ME 100 / US 202?
I've got a few good, long ones
US 14/16/20 in Wyoming- 105 miles
US 87/MT 3/MT 200 in Montana- 95 miles
US 20/26/87 in Wyoming - 65 miles
I-25/US 85/US 87 in Colorado and New Mexico (though unsigned) - 145 miles
Quote from: SD Mapman on January 13, 2014, 05:34:14 PM
For overall highways, somewhere in Georgia.
Probably some good candidates here, yeah. Anywhere you have a concurrency of two US routes, there's also a state route along for the ride. (Also true in Alabama and Florida, but in those cases the state route is unsigned.)
Taking just a quick glance, US-19/US-41/GA-3 is probably 40-50 miles. US-23/US-441/GA-15 is around 50 miles. US-1/US-23/GA-4 looks to be about 70 miles. Not sure if there are any longer ones; maybe US 129/441 or 319/441?
Some from Oklahoma:
Clayton NM to east of Boise City OK: US-56/64/412 (with US-385 and OK-3 along for part of the ride)–51 miles (https://maps.google.com/maps?saddr=Main+St&daddr=US-56+E&hl=en&ll=36.735583,-102.634277&spn=0.979494,1.652069&sll=36.762318,-102.384896&sspn=0.00765,0.012907&geocode=FYo1LAIddIjZ-Q%3BFZHyMAIdF7jl-Q&t=h&mra=me&mrsp=1,0&sz=17&z=10)
East of Boise City to Guymon: US-64/412/SH-3 (with SH-136 along for part of the ride)–55 miles (https://maps.google.com/maps?saddr=Hwy+64+E%2FOK-3+E%2FUS-412+E%2FUS-64+E&daddr=36.7624998,-102.336279+to:36.7626451,-102.283557+to:US-412+Truck+E&hl=en&ll=36.771892,-101.797943&spn=0.979031,1.652069&sll=36.760685,-102.366443&sspn=0.030599,0.051627&geocode=FVHyMAIdLrfl-Q%3BFYPzMAId6Xjm-SnhAu9rk1sPhzG6tcUh1bxAwg%3BFRX0MAId20bn-Sk1YqesN1oPhzGCq2gLVYdOWA%3BFb6oLwIdup7z-Q&t=h&mra=dme&mrsp=0&sz=15&via=1,2&z=10)
Bryan's Corner to Woodward: US-270/412/SH-3 (with US-183 along for part of the ride)–69 miles (https://maps.google.com/maps?saddr=OK-3%2FUS-412&daddr=Oklahoma+Ave&hl=en&ll=36.590171,-99.985199&spn=0.981346,1.652069&sll=36.945502,-101.373596&sspn=1.953588,3.304138&geocode=FTG4LgIdDiQC-g%3BFcvuKwIdIGsT-g&t=h&mra=mrv&z=10)
Quote from: corco on January 13, 2014, 06:33:24 PM
I-25/US 85/US 87 in Colorado and New Mexico (though unsigned) - 145 miles
That is the one I was thinking of as the probable winner.
Quote from: Steve on January 15, 2014, 10:54:54 PM
Quote from: corco on January 13, 2014, 06:33:24 PM
I-25/US 85/US 87 in Colorado and New Mexico (though unsigned) - 145 miles
That is the one I was thinking of as the probable winner.
It's actually 137 miles, but probably still wins.
Quote from: corco on January 13, 2014, 06:33:24 PM
I've got a few good, long ones
US 14/16/20 in Wyoming- 105 miles
US 87/MT 3/MT 200 in Montana- 95 miles
US 20/26/87 in Wyoming - 65 miles
I-25/US 85/US 87 in Colorado and New Mexico (though unsigned) - 145 miles
It's all 'cause of those blasted mountains!
mountains... grumble, grumble
M2/E65/E80 through the entirety of Montenegro (https://maps.google.com/maps?saddr=D8&daddr=E80&hl=en&ll=42.761129,19.503479&spn=1.30466,2.705383&sll=42.891561,20.242996&sspn=0.325482,0.676346&geocode=FVVOiAIdx1UZAQ%3BFfy6jgIdDFM2AQ&oq=Budap&mra=mift&mrsp=1&sz=11&t=m&z=9) 339km (210 miles).
Quote from: english si on January 16, 2014, 07:47:11 AM
M2/E65/E80 through the entirety of Montenegro (https://maps.google.com/maps?saddr=D8&daddr=E80&hl=en&ll=42.761129,19.503479&spn=1.30466,2.705383&sll=42.891561,20.242996&sspn=0.325482,0.676346&geocode=FVVOiAIdx1UZAQ%3BFfy6jgIdDFM2AQ&oq=Budap&mra=mift&mrsp=1&sz=11&t=m&z=9) 339km (210 miles).
I don't know how I feel about E routes. That's like saying the Trans-Canada Highway is co-signed with ON 11 and 17.
Not at all - they are like US routes, only most states doing what Florida does, only not hiding the concurrent routes.