Largest Numerical Difference in a Numbered Junction

[Jim]

Looking at our small difference variant on the topic, Virginia also is home to a 0:



New York 90 crosses I-90, but there is no interchange.

[hbelkins]

Kentucky has at least one "1" -- the intersection of KY 10 (concurrent with US 62) and KY 11. There are multiple intersections and two concurrencies of KY 9 and KY 10, also for a difference of one.

[US 89]

If we're doing small differences now, then Utah's winner would be 1, which occurs in a bunch of places thanks to number clusters. I think I got them all below

-SR 90 intersects both US 89 and US 91 - at the same place, no less!
-SR 24 intersects SR 25
-SR 43 intersects SR 44
-SR 65 intersects SR 66
-SR 83 intersects I-84
-SR 99 intersects SR 100
-SR 118 intersects SR 119
-SR 123 intersects SR 124
-SR 171 intersects SR 172
-SR 172 intersects SR 173
-SR 201 intersects SR 202
-SR 269 intersects SR 270

[NWI_Irish96]

If we're doing small differences now, then Utah's winner would be 1, which occurs in a bunch of places thanks to number clusters. I think I got them all below

-SR 90 intersects both US 89 and US 91 - at the same place, no less!
-SR 24 intersects SR 25
-SR 43 intersects SR 44
-SR 65 intersects SR 66
-SR 83 intersects I-84
-SR 99 intersects SR 100
-SR 118 intersects SR 119
-SR 123 intersects SR 124
-SR 171 intersects SR 172
-SR 172 intersects SR 173
-SR 201 intersects SR 202
-SR 269 intersects SR 270

Differences of 1 are so common they're trivial. What would be interesting would be finding the largest pair of consecutive numbers that have a junction.

[Duke87]

NJ is 439 and 1

440 intersects 1 Truck

Include unsigned designations and NJ 700's interchange with US 40 is larger.

[KCRoadFan]

If we're doing small differences now, then Utah's winner would be 1, which occurs in a bunch of places thanks to number clusters. I think I got them all below

-SR 90 intersects both US 89 and US 91 - at the same place, no less!
-SR 24 intersects SR 25
-SR 43 intersects SR 44
-SR 65 intersects SR 66
-SR 83 intersects I-84
-SR 99 intersects SR 100
-SR 118 intersects SR 119
-SR 123 intersects SR 124
-SR 171 intersects SR 172
-SR 172 intersects SR 173
-SR 201 intersects SR 202
-SR 269 intersects SR 270

Differences of 1 are so common they're trivial. What would be interesting would be finding the largest pair of consecutive numbers that have a junction.

My guess is somewhere in South Florida - there are a lot of roads in the 800 and 900 series there. Or maybe there's an intersection of consecutive 4-digit FM roads somewhere in Texas.

[bwana39]

LA-3194 (MLK  Cooper RD) and LA-1 (North Market Street. https://goo.gl/maps/ix3d1utNESycjrqL9

[Avalanchez71]

If we're doing small differences now, then Utah's winner would be 1, which occurs in a bunch of places thanks to number clusters. I think I got them all below

-SR 90 intersects both US 89 and US 91 - at the same place, no less!
-SR 24 intersects SR 25
-SR 43 intersects SR 44
-SR 65 intersects SR 66
-SR 83 intersects I-84
-SR 99 intersects SR 100
-SR 118 intersects SR 119
-SR 123 intersects SR 124
-SR 171 intersects SR 172
-SR 172 intersects SR 173
-SR 201 intersects SR 202
-SR 269 intersects SR 270

Differences of 1 are so common they're trivial. What would be interesting would be finding the largest pair of consecutive numbers that have a junction.

My guess is somewhere in South Florida - there are a lot of roads in the 800 and 900 series there. Or maybe there's an intersection of consecutive 4-digit FM roads somewhere in Texas.

My original post was US 1 & SR 9336 in South Florida.

[Henry]

For WA, I-82 and WA 823 would be the one (with 741 being the difference).

[formulanone]

Texas has FM 4000 and Business 271 in Mount Pleasant.

[CardInLex]

Kentucky has at least one "1" -- the intersection of KY 10 (concurrent with US 62) and KY 11. There are multiple intersections and two concurrencies of KY 9 and KY 10, also for a difference of one.

KY 33 and KY 34 meet in Danville. Danville used to be home to KY 35 (retired), the current intersection of 33 & 34 would have also had 35. KY 37 is also in Danville.

[CardInLex]

Given that Kentucky has regular state routes signed well into the 3000s, and with some 6000-series frontage routes in western Kentucky signed, I'm not sure I would attempt to find our example.

Here's KY 69 intersecting KY 6122.

2018 South- and West-Central KY Day 2 - 051 by H.B. Elkins, on Flickr

Although it shouldn't be signed since the KY 9000 series are for internal use only, the Mountain Parkway at I-64 interchange does feature KY 9000 signs. So, the difference would be: 8,936.

https://goo.gl/maps/68jxY34zjYaYDh5W6

[formulanone]

Although it shouldn't be signed since the KY 9000 series are for internal use only, the Mountain Parkway at I-64 interchange does feature KY 9000 signs. So, the difference would be: 8,936.

https://goo.gl/maps/68jxY34zjYaYDh5W6

Or 8942, with KY 9007 at I-65:

[jemacedo9]

Differences of 1 are so common they're trivial. What would be interesting would be finding the largest pair of consecutive numbers that have a junction.

PA has a concurrency of PA 957 and PA 958.

[thspfc]

Wisconsin has a 0 difference concurrency that you may have heard about. I-794 ends where WI-794 begins in south Milwaukee. There are a handful of intersections with a difference of 1: US-63 and WI-64, WI-64 and WI-65, WI-11 and US-12, and WI-42 and I-43 twice. There are probably others.

[jp the roadgeek]

CT had a few 1's

US 1 and CT 2
CT 2 and CT 3
US 5 and US 6 (cross but only one ramp from US 5 north to US 6 [I-84]West)
US 6 and US 7 (concurrency as part of a quadplex with I-84 and US 202)
CT 30 and CT 31
CT 31 and CT 32
CT 63 and CT 64
CT 68 and CT 69
CT 70 and CT 71
CT 71 and CT 72 (one ramp from 72 east to 71)
CT 79 and CT 80
CT 80 and CT 81
CT 83 and I-84
CT 110 and CT 111
CT 153 and CT 154
CT 164 and CT 165
CT 173 and CT 174 (very brief concurrency)
CT 182 (and 182A) and CT 183

[hbelkins]

Differences of 1 are so common they're trivial. What would be interesting would be finding the largest pair of consecutive numbers that have a junction.

PA has a concurrency of PA 957 and PA 958.

KY 2002 and KY 2003 is the largest one that I have a photo of.

But there's an intersection of KY 3338 and KY 3339 in Menifee County. From the KYTC photolog...

[Buck87]

Ohio's is OH 872 and OH 7.

872 is Ohio's largest state route number, with 852 being the next largest, so this difference of 865 is the biggest possible for state routes here.

OH 872 is less than a mile long, connecting OH 7 to the bridge over the Ohio River to Moundsville, WV.

[kphoger]

And what about Texas, what with all its four-digit FM roads?

Texas' winner is a difference of 3729.
In the town of Mount Pleasant, FM-4000 has an interchange with US-271 and an intersection with US-271-Business.

[TheCatalyst31]

For Wisconsin, you can also find the greatest alphabetical difference in a lettered junction. I think it's the junction between County A and County ZZ in Richland County, northwest of Richland Center.

[TheHighwayMan3561]

For Wisconsin, you can also find the greatest alphabetical difference in a lettered junction. I think it's the junction between County A and County ZZ in Richland County, northwest of Richland Center.

Wisconsin has at least one 3-digit lettered route that I've seen (Trempealeau CTH-OOO near Osseo), so CTH-O and CTH-OOO would beat that.

[TheCatalyst31]

For Wisconsin, you can also find the greatest alphabetical difference in a lettered junction. I think it's the junction between County A and County ZZ in Richland County, northwest of Richland Center.

Wisconsin has at least one 3-digit lettered route that I've seen (Trempealeau CTH-OOO near Osseo), so CTH-O and CTH-OOO would beat that.

It depends on whether you go strictly in alphabetical order, or put double letters after single letters and triple letters after double letters. If we're going by the latter, then I think the junction of D and VVV in Fond du Lac is the greatest difference.

[kphoger]

D — VVV = CDLXXXV   

[Big John]

^^  VVV is an improper use of Roman numerals.

[kphoger]

^^  VVV is an improper use of Roman numerals highway signs.

FTFY.