XY Challenge

[formulanone]

California 1 and US 101:



Illinois 71 and 351 in LaSalle:



A wrong-way with US 61 and Missouri 91 north of Sikeston:

[Jim]

May 11: Post signage indicating a concurrency between two routes, both of which have a number ending in 1.

New York 21 and New York 31 in Palmyra.  April 3, 2025.



Coastal US 1 and Maine 191 in East Machias.  August 9, 2014.



Arizona 61 and US 191 in St. Johns.  October 14, 2018.

[paulthemapguy]

May 11: Post signage indicating a concurrency between two routes, both of which have a number ending in 1.

US31, US41, and US431 all moving through Nashville together


TN-US31-US431DS by Paul Across America, on Flickr

Someone already posted Machias, so I'm going somewhere else in Maine. In Fort Kent, as US1 starts, it immediately joins Maine 11 and Maine 161 for a short while:


ME-US1NTS by Paul Across America, on Flickr

As US641 begins, it heads south out of Marion, Kentucky duplexed with Kentucky 91


KY-US641-US60SR by Paul Across America, on Flickr

The next few days:
May 12: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 2.
May 13: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 3.
May 14: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 4.

[wanderer2575]

May 11: Post signage indicating a concurrency between two routes, both of which have numbers ending in 1.

I have an IL-351/IL-71 photo but that combo was played already.

US-421 and KY-221 in Bledsoe:


KY-451 and KY-2021 in Busy (I know I've previously posted this photo somewhere on the forum, but pretty sure not for this challenge):

[xonhulu]

May 12: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 2.

I was shut out yesterday, which is sad because I've actually been to a few of the places in the pix you guys posted.

But good news is I have a couple today.

US 101 BUS and OR 202 in Astoria:



Fun erroneous sign at the other end of their concurrency:



NE 71 and NE 2, Crawford:

[wanderer2575]

May 12: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 2.

ON-551 and ON-542 in Mindemoya:


US-2 and US-141 in Iron Mountain, MI:


M-51 and M-62 in Dowagiac:


US-1 and US-2 in Houlton, ME:

[74/171FAN]

May 12: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 2.

US 62 and OH 21 in Massillon.

US 62 EAST AND OH 21 NORTH CONCURRENCY by Mark Moore, on Flickr

[formulanone]

US 412 and 71 Business in Springdale, Arkansas:



Oklahoma 51 and US 62:



New Hampshire 11 and 12 overlap near Charleston:

[paulthemapguy]

May 12: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 2.

US61 and Missouri 162 in the Bootheel


MO-162-US61DE by Paul Across America, on Flickr

US302 and Maine 11


ME-011-US302EWR by Paul Across America, on Flickr

ME-US302-035WW by Paul Across America, on Flickr

US92 and US441 in Kissimmee, Florida


131 US92 by Paul Across America, on Flickr

The next few days:
May 13: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 3.
May 14: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 4.
May 15: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 5.
May 16: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 6.

[Jim]

May 12: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 2.

To Niagara Falls for New York 61 with New York 182. March 18, 2023.



South Dakota 11 and South Dakota 42 near Sioux Falls.  September 5, 2019.



North Carolina 242 and US 701 in Elizabethtown.  July 21, 2019.

[skatcher]

May 11: Post signage indicating a concurrency between two routes, both of which have numbers ending in 1.

I know I'm a day late on this one, but I was too exhausted yesterday after driving mostly US highways and a few GA highways between Ocala FL and Atlanta GA, then visiting family in the ATL, to post.

Beginning of the US 1/US 23 concurrency (along with US 23) in Callahan FL



US 41/US 301 north at FL 64 west in Bradenton FL



US 301/US 441 south near the beginning of their concurrency north of Ocala

[skatcher]

May 12: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 2.

US 41 north/US 72 east at US 72 eastern endpoint in Chattanooga TN (gotta love it when a highway will multiplex for miles and miles just to end close to a city center)

[xonhulu]

May 13: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 3.

At one time, US 191 and US 163 were co-signed through Bluff up to the junction with UT 162:



ID 41 and ID 53 briefly merge in Rathbun:

[skatcher]

May 13: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 3.

US 441/TN 33 north are concurrent from South Knoxville to Halls Crossroads

[74/171FAN]

May 13: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 3.

US 11 and PA 533 in Shippensburg

US 11 NORTH AND PA 533 EAST CONCURRENCY (3) by Mark Moore, on Flickr

[paulthemapguy]

May 13: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 3.

Missouri 53 and Missouri 51 near Qulin


MO-053-051DW by Paul Across America, on Flickr

US43 and Alabama 171 near Hamilton


AL-US43-171M by Paul Across America, on Flickr

Illinois 23 and Illinois 71 in Ottawa


IL-023-071DS by Paul Across America, on Flickr

The next few days:
May 14: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 4.
May 15: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 5.
May 16: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 6.

[Jim]

May 13: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 3.

New York 23 and New York 51 in Morris. June 4, 2015.



Georgia 23 and Georgia 121 leaving Folkston.  August 16, 2018.



US 33 and Virginia 231 in Gordonsville.  July 25, 2011.

[wanderer2575]

May 13: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 3.

US-23 and US-441 northeast of Mt. Airy, GA:

[formulanone]

Louisiana 21 and 1083 in Waldheim:



Massachusetts 41 and 23 in Great Barrington:



Missouri 51 meets at 53 for a stretch:

[xonhulu]

May 14: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 4.

This round is turning out to be tougher than I thought it would. Once again today, I could only come up with 2 pix.

OR 211 and OR 224 near Estacada:



US 491 and US 64 duplex for a few blocks in Shiprock, NM:

[wanderer2575]

May 14: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 4.

US-41 and M-94 south of Skandia:


ON-401 and ON-4 have a brief concurrency in London:

[74/171FAN]

May 5: Post signage indicating a concurrency between two routes, of which one route has a number ending in 0, and the other route has a number ending in 4.

PA 34 and PA 850 in Shermans Dale to make up for my May 5th brainfart

PA 34 NORTH AND PA 850 WEST CONCURRENCY by Mark Moore, on Flickr

[skatcher]

May 14: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 4.

FL 24 east approaching its concurrency with US 441 north in Gainesville (as of 9/6/25 Gainesville is unofficially Bulls Country \--/  )



FL 44 west approaching its concurrency with US 41 north in Inverness

[formulanone]

US 201 and Maine 24 at Brunswick Bridge:



US 41 and Florida 44 in Inverness:



Flip it for Connecticut 41 along US 44 in Salisbury:

[paulthemapguy]

May 14: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 4.

In the La Crosse, Wisconsin extended universe, here's US14 and US61 in LaCrescent, Minnesota


MN-016-US61WER by Paul Across America, on Flickr

Illinois 14 and Illinois 1 join together in Crossville, Illinois


IL-001-014NSR by Paul Across America, on Flickr

US281 and US34 enter Hastings, Nebraska, together, coming in from the north


NE-US281-US34DS-Hastings by Paul Across America, on Flickr

The next 3 days:
May 15: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 5.
May 16: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 6.
May 17: Post signage indicating a concurrency between two routes, of which one route has a number ending in 1, and the other route has a number ending in 7.