Keep in mind that lower numbers are expected to have more important routes with that number, so higher numbers have a lower threshold for inclusion.
28: VA, PA, NY, and MA/NH.
32: CT/MA/NH, NY, MD, OH, and WI.
37: CA, VA, IN, and RI.
55: ID, NJ, CA, and MN.
60: CA, FL, and IA/MN.
66: OK, IN, PA, and CT.
73: CA, OH, and NJ/PA.
99: CA, OR, WA, and TX.
200: ID/MT/ND/MN and MD.
202: AZ and FL.
288: VA and TX.
I'm not sure what your criteria are, but you can add MI to 28, 37, 55 and 66.
Quote from: GaryV on August 21, 2018, 04:09:28 PM
I'm not sure what your criteria are, but you can add MI to 28, 37, 55 and 66.
It's a bit subjective.
I would definitely add 58 as applied in both CA and OR; both are interregional arterials that carry both commercial and recreational traffic. Actually, there are a few similarities: at their western ends (at least with the commercially viable section of the CA corridor) they convey their traffic to a N-S arterial near the south end of the state's main agricultural valley, and each is paralleled by a major ex-Southern Pacific main rail line (now part of UP).
LA could also be added to 28 as well. Major east-west corridor in central Louisiana, and the only way to reach highways into Mississippi for a large portion of Louisiana.
iPhone
1- LA, DE, and GA (US 27).
Quote from: roadman65 on August 22, 2018, 05:30:08 PM
1- LA, DE, and GA (US 27).
Even with CA and IL added to the list, five states probably isn't enough for a number that low, especially since one shadows a US route.
Add M-1. It's not very long, but it's important and historical.
You can add TN-66 to that list; it's the main way to get from I-40 through Sevierville to US-441/321 at Pigeon Forge and then to the Smokies.
72 seems like a pretty important number as well. You have DE-72 which is an important connector of suburban towns in Newcastle County, DE, SC-72 which runs almost the entire length of the state in the Upstate area, connected to GA-72 which links Athens to the SC-72 corridor, TN-72 which is a heavily-traveled back way from Kingston to Blount County, TX-72 which links farming communities in South Texas, and CA-72, which may be short but it is a major thoroughfare in Los Angeles.
Quote from: mrcmc888 on August 22, 2018, 07:04:40 PM
You can add TN-66 to that list; it's the main way to get from I-40 through Sevierville to US-441/321 at Pigeon Forge and then to the Smokies.
72 seems like a pretty important number as well. You have DE-72 which is an important connector of suburban towns in Newcastle County, DE, SC-72 which runs almost the entire length of the state in the Upstate area, connected to GA-72 which links Athens to the SC-72 corridor, TN-72 which is a heavily-traveled back way from Kingston to Blount County, TX-72 which links farming communities in South Texas, and CA-72, which may be short but it is a major thoroughfare in Los Angeles.
Add M-72 - it's a cross-the-fingers route from Lake Michigan to Lake Huron, going through many tourist spots.
Quote from: mrcmc888 on August 22, 2018, 07:04:40 PM
You can add TN-66 to that list; it's the main way to get from I-40 through Sevierville to US-441/321 at Pigeon Forge and then to the Smokies.
72 seems like a pretty important number as well. You have DE-72 which is an important connector of suburban towns in Newcastle County, DE, SC-72 which runs almost the entire length of the state in the Upstate area, connected to GA-72 which links Athens to the SC-72 corridor, TN-72 which is a heavily-traveled back way from Kingston to Blount County, TX-72 which links farming communities in South Texas, and CA-72, which may be short but it is a major thoroughfare in Los Angeles.
Don't know if CA 72 is all that important today; it was the alignment of the old US 101 pre-1956, but in the 62 years since has been truncated one section at a time and relinquished to the cities through which it travels; all that's left is a short stretch between I-605 and CA 39 along Whittier Blvd, with only sporadic signage (as of 2012, the last time I was in the area).
KS and OK 99 are both border-to-border routes, so you can add them in on the 99 line.
Add in Utah for 73. A few segments of SR-73 now have enough traffic that they’ll be upgraded to a freeway within 10 years.
Quote from: Scott5114 on August 24, 2018, 02:43:42 PM
KS and OK 99 are both border-to-border routes, so you can add them in on the 99 line.
I’ve always figured that OK/KS/NE 99 plus NE 50 would make a good extension of US 377.
100 - MN, WI
400 is important in both Georgia and Florida, though admittedly the latter is mostly hidden under I-4.
Quote from: mrcmc888 on August 22, 2018, 07:04:40 PM
72 seems like a pretty important number as well. You have DE-72 which is an important connector of suburban towns in Newcastle County, DE, SC-72 which runs almost the entire length of the state in the Upstate area, connected to GA-72 which links Athens to the SC-72 corridor, TN-72 which is a heavily-traveled back way from Kingston to Blount County, TX-72 which links farming communities in South Texas, and CA-72, which may be short but it is a major thoroughfare in Los Angeles.
I'd include PA 72 as it links Lancaster to Lebanon and Lebanon to I-81 near the west end of I-78. PA 72 also has an interchange with I-76/PA Turnpike (Exit 266) near Cornwall.
Quote from: 1 on August 21, 2018, 09:41:55 AM
60: CA, FL, and IA/MN.
PA 60 would have made this list a decade ago. :-o (and maybe still would make this list if it had stayed on I-376 to follow what was PA 60 BUS and now I-376 BUS)
Quote from: 1 on August 22, 2018, 05:37:34 PM
Quote from: roadman65 on August 22, 2018, 05:30:08 PM
1- LA, DE, and GA (US 27).
Even with CA and IL added to the list, five states probably isn't enough for a number that low, especially since one shadows a US route.
That's like saying I-95, I-80 and US 101 aren't important because they're high numbers.
Quite a number of states - in fact, over 25% of the states in the country - can't use 1 because of US 1.
Quote from: jeffandnicole on August 24, 2018, 09:39:22 PM
Quote from: 1 on August 22, 2018, 05:37:34 PM
Quote from: roadman65 on August 22, 2018, 05:30:08 PM
1- LA, DE, and GA (US 27).
Even with CA and IL added to the list, five states probably isn't enough for a number that low, especially since one shadows a US route.
That's like saying I-95, I-80 and US 101 aren't important because they're high numbers.
Quite a number of states - in fact, over 25% of the states in the country - can't use 1 because of US 1.
His point is that lower numbers are far more commonly used overall. Because there's higher usage of low numbers, then there needs to be a higher number of states with a significant SR of a low number to make it noteworthy.
If there were a bunch of states with an important SR 573, for example, that would be a lot more noteworthy than the same situation for a two-digit (or one-digit) number.
92 - seems to be a major east/west in Nebraska, Iowa, and into Illinois, and all three are continuous with each other.
The number 60 seems to pop up in several states as a major corridor; there's the cross-state FL 60, the MSR (IA/MN) 60 that provides a large portion of the major connection between the Twin Cities and points to the southwest, and, of course, CA 60, which is likely the most heavily-traveled version of those state routes (albeit its status is just a bit tarnished by the fact that the number is a renumbering of the independent CA section of the former US route of the same number). Also, OH 60 does traverse the state south-to-north -- although it's only a major regional corridor in its southern reaches; WI 60 crosses the entire state, but only the section following the Wisconsin River has any importance. Finally, M-60 in MI is a major regional connector within the state, but it's overshadowed by I-94 to the north and US 12 (formerly 112) to the south.
^ NY 60 might contribute to your case for 60. It's not in the top ten or probably even twenty most important state routes statewide, but it has some regional significance.