XY Challenge

[Jim]

I-81 and New York 298 in Syracuse.  October 24, 2019.



Connecticut 218 from I-91 (not pictured) and an irrelevant I-291.  April 27, 2012.



US 1 and I-78 in New Jersey.  July 18, 2009.

[paulthemapguy]

September 18: Post the junction of an Interstate and a route of a different type, of which one route ends in 1 and the other route ends in 8.

Wunzinates.

I-88 at Illinois 251


IL-I-88X076W by Paul Across America, on Flickr

I-78 at PA-501


PA-I-78X13E by Paul Across America, on Flickr

I-71 at Ohio 48 near Lebanon


OH-I-71X028S by Paul Across America, on Flickr

The next 3 days:
September 20: Post the junction of an Interstate and a route of a different type, of which both route numbers end in 2.
September 21: Post the junction of an Interstate and a route of a different type, of which one route ends in 2 and the other route ends in 3.
September 22: Post the junction of an Interstate and a route of a different type, of which one route ends in 2 and the other route ends in 4.

[wanderer2575]

I-H1 eastbound at HI-78 in Honolulu:

[74/171FAN]

September 19: Post the junction of an Interstate and a route of a different type, of which one route ends in 1 and the other route ends in 9.

I-81 and PA 309 in Wilkes-Barre.

PA 309 SOUTH NEAR I-81 NORTH AND PA 115 SOUTH by Mark Moore, on Flickr

[Jim]

The since-replaced and heavily-punctuated sign where Vermont 9 East arrives at I-91 on the east end of Brattleboro matches with a Vermont 9 and an I-91.  January 26, 2001.



A bit blurred double match with I-49 Business, Missouri 171, and Missouri 571 taken on I-49.  July 22, 2015.



New York 69 and I-81 in Parish.  April 13, 2023.

[flan]

I was driving in southeastern ND today and quickly grabbed this picture after checking whether or not this thread had passed the 1s and 9s combination yet. Good timing by me!

[wanderer2575]

US-51 at I-39 south of DeForest, WI:

[paulthemapguy]

September 19: Post the junction of an Interstate and a route of a different type, of which one route ends in 1 and the other route ends in 9.

I-71 and Ohio 39

OH-I-71X173N by Paul Across America, on Flickr

I-39 and Illinois 71, reversing the numbers from the last post!


IL-I-39X051S by Paul Across America, on Flickr

I-59 and Alabama 211


AL-I-59X188N by Paul Across America, on Flickr