Related consecutive routes

[hotdogPi]

For example: MA 127 is the surface equivalent of MA 128 from Beverly to Gloucester.
Similarly, MA 4 is a surface equivalent of the US 3 freeway for most of MA 4's length.
ME 161 and ME 162 are at the far northern end of Maine.
NH 121, 122, 123, and 124 all end at the Massachusetts border.
Then there is the extreme case of VT 66, 65, 64, 63, and 62 being crossed by I-89 in Vermont in order (65 has no exit).

They can be bypasses, extensions, alternates, the only two routes to have a feature, or more. Two routes intersecting or a short multiplex is not enough to count.

[agentsteel53]

interstates H-1, H-2, and H-3

[Eth]

Just to get it out of the way: GA 401 through 409 (and then the odd numbers in sequence up through 421) are unsigned routes corresponding to Georgia's portion of the Interstate system.

[agentsteel53]

anyone got a photo of cosigned US 60, 61, and 62?

or, better yet, US 23, 24 and 25?

here's the best I can do for the latter:

[bassoon1986]

I always liked thinking that in Louisiana, LA 1 meets LA 2. You can travel along LA 2 for a short ways to meet LA 3. None of the other primary routes, at least up to LA 20 criss cross like that.

With US routes, US 78 reaches US 79 in Memphis (although probably not signed at all),
US 79 meets US 80 in Louisiana,
US 80 used to cross US 81 in Fort Worth,
81 and 82 cross in Ringgold, TX,
82 and 83 near Guthrie, TX
83 and 84 in Abilene, TX,
and 84 and 85 meet along I-25 in NM

That's 8 consecutive routes that cross somewhere in the US and stairstep along the "grid"

[agentsteel53]

before 1975 or so, you could go 59-60-61-62-63-64-65-66-67.  no dice on 58 and 68.

[hubcity]

Around the Jersey Shore, there's a network of 3x roads:

33 intersects 34 and 35
35 intersects 33, 34, 36 (twice) and 37, and once upon a time, 38
34 intersects 33, (former) 38, and 35
36 intersects 35 twice
37 intersects 35
(former) 38 intersects 34 and 35.

(US) 30, 31 and 32 stand apart from the other 3x's, and there is no 39...

[jbnv]

Interstates 10 and 12 (consecutive even numbers).

[agentsteel53]

Interstates 10 and 12 (consecutive even numbers).

similarly, 55 and 57.  57 ends at 55 in Missouri, and doesn't quite end at 55 in Chicago but comes close.

[hubcity]

there is no 39...

I stand corrected - it was (almost) fully concurrent with US 206. That'd give it an intersection with Route 33.

UPDATE: Nope, it doesn't. Looks like 206 manages to bow to the west and avoid an intersection with 33.

[TheStranger]

In northern California, Routes 236, 237, and 238 are former alignments of Route 9 in Santa Cruz County (236) and the Bay Area (237 and 238).  (Though at one point Route 238 extended further south along former Route 17)

[Rover_0]

UT-90 is a "city route" that takes you between UT-13 in downtown Brigham City and US-89/91. You either get off SB 89/91 onto WB 90 or EB 90 dumps you onto NB 89/91, so it kind of acts like a spur.

[Zeffy]

UPDATE: Nope, it doesn't. Looks like 206 manages to bow to the west and avoid an intersection with 33.

US 206 intersects Market Street in Downtown Trenton, but at that time I believe NJ 33 is further east. NJ 33 is Market Street in Trenton though, just not that section of it.

[hbelkins]

anyone got a photo of cosigned US 60, 61, and 62?

I have one of Business US 60 with US 61 and US 62 at Sikeston.

[Charles2]

The eastern terminus of AL-216 is at a junction with AL-215 in Tuscaloosa.

[mcdonaat]

LA 1 and LA 2 meet, somewhat close to where LA 2 and LA 3 meet, but what's more interesting is that US 71 is the only route in the state that meets LA 2 (Hosston), LA 4 (Bossier/Red River line), LA 6 (Clarence), LA 8 (Colfax), and LA 10 (Lebeau). No route can say that they meet the odd numbered routes because, well, they're slaughtered. LA 1 is the longest in the state, LA 3 is about 80 miles long in northern LA, LA 5 is a short stubby route, LA 7 is gone, and LA 9 does its' own thing.

We have so many routes, though, that tons of them end at or close to each other.

[hbelkins]

Maysville, Ky. has four consecutive state routes -- KY 8, KY 9, KY 10 and KY 11. Unfortunately, they don't all intersect. KY 8 intersects 10, 9 intersects 10 and 11, 10 intersects all three other ones and 11 intersects 9 and 10.

Northastern Kentucky has a crap ton of single-digit highways, but they don't all intersect. Greenup County has 1, 2, 5, 7 and 8. KY 3 and KY 9 come close to Greenup but do not enter its boundaries.

In a number of Kentucky counties, there will be clusters of consecutively numbered four-digit routes in the 3000-series stemming from when the state took over maintenance of a lot of county routes in the 1980s.

There will occasionally be consecutively numbered three-digit routes or four-digit routes within a county or contiguous counties. For instance, KY 846 and 847 in Owsley County or 2016 and 2017 in Lee County.

[Takumi]

Virginia has too many to list.

[JMoses24]

Maysville, Ky. has four consecutive state routes -- KY 8, KY 9, KY 10 and KY 11. Unfortunately, they don't all intersect. KY 8 intersects 10, 9 intersects 10 and 11, 10 intersects all three other ones and 11 intersects 9 and 10.

Northastern Kentucky has a crap ton of single-digit highways, but they don't all intersect. Greenup County has 1, 2, 5, 7 and 8. KY 3 and KY 9 come close to Greenup but do not enter its boundaries.

In a number of Kentucky counties, there will be clusters of consecutively numbered four-digit routes in the 3000-series stemming from when the state took over maintenance of a lot of county routes in the 1980s.

There will occasionally be consecutively numbered three-digit routes or four-digit routes within a county or contiguous counties. For instance, KY 846 and 847 in Owsley County or 2016 and 2017 in Lee County.

Another instance of the latter: KY 236 and 237 in Boone County, which can be connected by a brief stretch of I-275 or KY 20 off KY 212.

Or KY 16, 17, and 18 in Boone and Kenton Counties.

Also, KY 16 can be used to bypass KY 17 in much of Kenton County by way of Taylor Mill.

And, in an instance of consecutive even numbers, you also have KY state routes 14, 16, 18, and 20 all in Boone County. 14 and 16 are concurrent in the Walton area. 18 intersects with 20 in the northern part of the county.

[SD Mapman]

US 14 intersects SD 13 by Elkton. That's all we have.

[Alps]

They can be bypasses, extensions, alternates, the only two routes to have a feature, or more. Two routes intersecting or a short multiplex is not enough to count.

Expanding on the NJ theme:
* NJ 3 is a Jersey freeway/partial actual freeway to the Lincoln Tunnel. NJ 4 is a Jersey freeway/partial actual freeway to the George Washington Bridge. Both end a couple of miles west of the Garden State Parkway.
* Before 1953, NJ 5 was the old route to the ferry and NJ 6 was the new route to the GW Bridge, in Edgewater. NJ 6 is now just US 46.
* NJ 19 is a renumbering of a segment of NJ 20. 19 and 20 are on either side of Paterson.
* Since its completion, NJ 21 is now logically continued by NJ 20 via a short US 46 segment. The completed segment of 21 actually follows the rough path that 20 was intended to follow (from what's now NJ 120).
* US 22 to NJ 21 is a shunpike of the Parkway's Union toll plaza and the tolls on Exits 143-148.
* NJ 23 and NJ 24 are roughly parallel, but 24 is east-west and 23 is north-south.
* NJ 26 is the old alignment of pre-1953 NJ 25 (now just US 1).
* NJ 26 was originally a bypass of NJ 27 (taking US 1 off the Lincoln Highway).
* NJ 28 EB is paired for a block with NJ 27 SB in Elizabeth until it meets 27 NB.
* Pre-1953 NJ 29 (now just US 22) is a bypass of NJ 28.
* NJ 32 and NJ 33 are consecutive divided-highway interchanges along the NJ Turnpike.
* NJ 34 is an inland bypass of NJ 35.
* NJ 35 is an inland bypass of NJ 36 (well, in essence - 35 was there first).
* NJ 37 and NJ 38 were originally conceived as a pair of central Jersey expressways or freeways that would have crossed in the middle of the state. Draw a line from 37 to I-195/295's interchange and draw a line from NJ 38 to NJ 138, and you'll see how they would have gone.
* NJ 41, 42, pre-1953 43 (now US 30), 44, 45, pre-1953 46 (now 77), and 47 all fan out from the Camden area.
* 74, 75, and 76 were all state highway numbers assigned to freeways but never used. (76 became 81, the other two were never built)
* 96 and 97 are the first two consecutive numbers not ever planned for a NJ highway of any kind (to my knowledge).
* 100 and 101 were proposed as freeways that eventually were built as part of the NJ Turnpike.
* NJ 166 and NJ 167 are old alignments of US 9. Because 1xx route numbers above 150 are assigned consecutively, this is just a happy coincidence.
* NJ 171 and 172 are both old alignments in New Brunswick. (They really ought to intersect, but they don't.) Again, these numbers are randomly consecutive.
* NJ 439 and NJ 440 both took their numbers from Staten Island, even though 439 no longer exists in NY. Originally, they were for the two western Staten Island bridges, Goethals (439) and Outerbridge (still 440).
* 444, 445, and 446 were all assigned to cover NJ's non-Turnpike unnumbered highways.

[CNGL-Leudimin]

Spain: A-1, A-2, A-3, A-4, A-5 and A-6 all radiate out of Madrid and share the zero milepost. A/AP-7, A/AP-8 and AP-9 all follow the coastline (In the case of AP-9... well, the coast is what is).

[Charles2]

US-80 (and US 29) intersect AL-81 in Tuskegee. 

Before the completion of I-20/59 in Birmingham, US 78 intersected AL-79 in downtown.  AL-79's southern terminus is now at I-20/59 near the airport.

[cjk374]

Coming down US 167 from Ruston, LA (really starting in Vienna), LA 146 multiplexes with US 167.  Then in Hodge/Jonesboro, LA 147 runs concurrent.  In between Ruston & Hodge, LA 148 intersects US 167 at Clay. 

On LA 146 between Ruston and Chatham LA 144, LA 145, & LA 148 junction off of LA 146.

On LA 155 you will either junction with or run concurrent with LA 153, LA 154, LA 156, and LA 157.

[TheStranger]

Near San Diego, Routes 78 and 79 run concurrent between Santa Ysabel and Julian; until the 1960s, the southern terminus of Route 79 was at US 80 (now I-8) in Descanso Junction.