Iconic duos

[bassoon1986]

The reason why US 1&9 was on the "Roadgeek Memes" thread was because the routes share the same sign. This isn't the case for any of the others.

It is for many intersections at US 79 and US 80! ala West Virginia fraction style too.


iPhone

[Dirt Roads]

US-15 and US-501 between Duke and UNC (and beyond).  A friend always asks me if 15-501 is known as "Tobacco Road".

[roadman65]

US 17 & 92 in Central Florida.

I believe US 92 spends more time with US 17 than alone.  The overlap is close to 100 miles from Lake Alfred to DeLand. I know east of US 17, US 92 is 25 miles and to the west of it I will guess it is near 70 miles give or take.  If not they are both close.

In Florida Mall parking lot, there is a fraction shield for US 17  92.

[Max Rockatansky]

US 17 & 92 in Central Florida.

I believe US 92 spends more time with US 17 than alone.  The overlap is close to 100 miles from Lake Alfred to DeLand. I know east of US 17, US 92 is 25 miles and to the west of it I will guess it is near 70 miles give or take.  If not they are both close.

In Florida Mall parking lot, there is a fraction shield for US 17  92.

While US 17/92 is probably more well known because of Orlando there are also other multiplexes in Central Florida that also come to mind:

-  US 19/US 98 on the Sun Coast.
-  US 17/US 98 in the vicinity of Bone Valley
-  US 98/FL 50 in rural Hernando/Pasco County.

That's not even getting into things like the triple multiplex of US 17/92/441 on OBT or FL 50/US 17/US 92 on Colonial .

[DJ Particle]

I-94/694

For that matter, I-494/MN-5 and US 10/61

[Katavia]

I-77 and US 21 through most of North Carolina.

[Hot Rod Hootenanny]

US 61 & US 49

(yes, my photo predates the completion of the Clarksdale bypass)

[Big John]

US 18/151 - Dodgeville to Madison WI

[TheHighwayMan3561]

I-94/694

For that matter, I-494/MN-5 and US 10/61

I don't know about 494/5 because that's just 494 to the average motorist. 10/61 I'm not sure on because I lived my whole life in the west metro, lol.

[fillup420]

I-40 and US 70, at least in North Carolina

[zachary_amaryllis]

I-40 and US 70, at least in North Carolina

and a cute little reverse of that, in colo, kansas, and i think some of missouri

i-70 / us 40

[Max Rockatansky]

US 50 and US 6 gets a lot of attention in ghost town/ghost road circles.  Especially when it comes to the vicinity of Cisco, UT.

[roadman65]

This for a short distance this is.

[Henry]

I-95 and US 1 on the East Coast certainly qualifies as one.

And expanding on the former route post a while back, I nominate I-5 and what was once US (and is now MSR) 99 for the West Coast.

[Avalanchez71]

I-95 and US 1 on the East Coast certainly qualifies as one.

And expanding on the former route post a while back, I nominate I-5 and what was once US (and is now MSR) 99 for the West Coast.

How much of old US 99 is now state maintained in the respective states?

[Max Rockatansky]

I-95 and US 1 on the East Coast certainly qualifies as one.

And expanding on the former route post a while back, I nominate I-5 and what was once US (and is now MSR) 99 for the West Coast.

How much of old US 99 is now state maintained in the respective states?

A lot, speaking from just California there is still a 425 mile (not all of it was US 99) CA 99 which mirrors I-5. 

[sparker]

I-15 and original US 91.  Except for that stretch in UT and ID that subsumed original US 191, I-15, in its 1957 configuration replaced post-1947 US 91 from Colton, CA to the Canadian border.  SW of Colton it was the proverbial hop, skip, and a jump to US 91's Long Beach southern terminus.  As far as basic corridors are concerned, US 91 figuratively became I-15. 

[ilpt4u]

I-40 and US 70, at least in North Carolina

and a cute little reverse of that, in colo, kansas, and i think some of missouri

i-70 / us 40

Add in Illinois, Indiana, Ohio, and parts of Maryland for I-70/US 40

[ozarkman417]

US Routes 62 & 412 through most of Arkansas.

[TheGrassGuy]

74 and 74