Unnecessary Concurrencies, Name them..

[Avalanchez71]

How about SR A1A/SR 200 in Nassau County FL.
SR 811/SR ALT A1A Palm Beach County FL.

[TXtoNJ]

How about SR A1A/SR 200 in Nassau County FL.
SR 811/SR ALT A1A Palm Beach County FL.

How about US 412

[Avalanchez71]

US 412 is concurrent with much in Tennessee with some minor exceptions. 

[CNGL-Leudimin]

Any concurrencies where one route terminates at the end of it. Seriously, truncate that route back.

[TR69]

KY 841 east of I-65 once I-265 is extended across the Ohio River at Louisville.

[dvferyance]

WI-13/WI-34 just end WI-34 at US-10. WI-13 was rerouted WI-34 should have just changed to WI-13 not became a duplex with it.

[7/8]

Any concurrencies where one route terminates at the end of it. Seriously, truncate that route back.

Owen Sound, ON is a great example of this.
The intersection of 10th St E and 9th Ave E has the following route numbers:
From the west - 6 and 21 (also a wrong-way concurrency)
From the north - 26
From the south - 6 and 10

Hwys 10 and 21 could easily be truncated outside of town to prevent this unnecessary confusion. Then there would only be 2 highway numbers meeting in town instead of 4.

[epzik8]

I-99 and U.S. 220. Maybe I-83 and U.S. 322 near Harrisburg too.

[20160805]

WI-13/WI-34 just end WI-34 at US-10. WI-13 was rerouted WI-34 should have just changed to WI-13 not became a duplex with it.

That's far from the only unnecessary concurrency in Wisconsin - WI-47 would logically be two or three different routes, and it even ends while concurrent with WI-182, which also ends at WI-47's terminus.  Either end 182 at 47 or 47 at 182; don't make a pointless concurrency.

And I'm certain there are others, too.  I agree with CNGL's point that any route that ends while concurrent with another should be truncated.

Edit: And what is the exact reason for the existence of I-894 when it is in its entirety concurrent with at least two other highways?  Just call it 41, people.

[hbelkins]

I-41 and everything. 

Seriously, VA 3 and VA 14 in the Northern Neck.

US 98 and US 319.

US 25 and US 341.

[Avalanchez71]

I-41 and everything. 

Seriously, VA 3 and VA 14 in the Northern Neck.

US 98 and US 319.

US 25 and US 341.

That US 98 and US 319 is a weird concurrency as well. 

Wasn't US 76 and US 74 concurrent in NC at one time with US 76 kinda serving as a business route then going back over to be concurrent with US 74 once again?

[74/171FAN]

Seriously, VA 3 and VA 14 in the Middle Peninsula.

Wasn't US 76 and US 74 concurrent in NC at one time with US 76 kinda serving as a business route then going back over to be concurrent with US 74 once again?

HB- FTFY

Also I thought US 76 did that in Wilmington now.

Finally, this thread existed 5 years ago but with no posts since 2011.  Oddly HB started it.

[mtantillo]

All of Maine.

[Big John]

IL/MO 110

[hotdogPi]

MA 4/225

[jp the roadgeek]

US 202 and DE 141/I-95.  Plus many other routes that render it almost useless (the standalone pieces can be filled in by state routes).

I-395 and CT 2A.

NH 10 and US 302.

FL and GA state routes that overlap interstates and US routes for their entire length in the state.

[nexus73]

SR 99 and SR 38 in Oregon.  South of Drain, 99 has been removed as a number and it is now a Douglas County route.  It renders the 99 part of the concurrency as a dead end.  38 on the other hand is a primary E-W route connecting US 101 and I-5.  That is the number which deserves to remain.

Rick

[Max Rockatansky]

US 85 and I-25 through most of Colorado and all of New Mexico....the king of all unnecessary concurrent routes.

[DandyDan]

Iowa 163 east of Oskaloosa and most of Iowa 27.

The only ones in Nebraska I can think of is NE 2 and NE 71 from their intersection west of Hemingford northward to South Dakota (should be NE 71 alone) and US 20 and US 275 from their intersection SE of Inman to O'Neill (should be US 20 alone).

[jwolfer]

US 202 and DE 141/I-95.  Plus many other routes that render it almost useless (the standalone pieces can be filled in by state routes).

I-395 and CT 2A.

NH 10 and US 302.

FL and GA state routes that overlap interstates and US routes for their entire length in the state.

It's rare to see the secret state route signed on us hwys or interstates in FL.  The only place I see the secret route for interstates mentioned is the construction "Your highway dollars at work" or on speeding tickets.

Georgia always does on us hwys but not interstates

Florida at least has grid pattern

[Bickendan]

SR 99 and SR 38 in Oregon.  South of Drain, 99 has been removed as a number and it is now a Douglas County route.  It renders the 99 part of the concurrency as a dead end.  38 on the other hand is a primary E-W route connecting US 101 and I-5.  That is the number which deserves to remain.

Rick

HWY 236 (Drain-Yoncalla Hwy) is still on the books, but it's under Douglas County maintenance, meaning OR 99 still runs south from Drain ala OR 8 on Gales Creek Rd west of Forest Grove.
OR 99 runs into the same situation along HWY 235 (Dillard Hwy) (between OR 42 and I-5) and HWY 237 (Myrtle Creek Hwy).

[national highway 1]

Wyoming.

[nexus73]

SR 99 and SR 38 in Oregon.  South of Drain, 99 has been removed as a number and it is now a Douglas County route.  It renders the 99 part of the concurrency as a dead end.  38 on the other hand is a primary E-W route connecting US 101 and I-5.  That is the number which deserves to remain.

Rick

HWY 236 (Drain-Yoncalla Hwy) is still on the books, but it's under Douglas County maintenance, meaning OR 99 still runs south from Drain ala OR 8 on Gales Creek Rd west of Forest Grove.
OR 99 runs into the same situation along HWY 235 (Dillard Hwy) (between OR 42 and I-5) and HWY 237 (Myrtle Creek Hwy).

Better look at an Oregon map.  Forest Grove is up by PDX.  Drain is south of Eugene/Cottage Grove.  There is no "8" in this area.  That is a PDX area route AFAIK.  The real clincher is that the 99 signs are gone from the entire south section which was formerly 99.  The north section only has a single 99 and 38 combined reassurance shield.  The empirical evidence suggests there is no 99 south of Drain any more. 

So let's eliminate ANY confusions and send 99 into the Great Former Highway Number In The Sky for this section...LOL!

Rick

[english si]

Any concurrencies where one route terminates at the end of it. Seriously, truncate that route back.

What if they are different classes of roads (eg an interstate and a US route)? Or different orientations and the concurrency short (eg a N-S with an E-W to reach another N-S road)?

The UK has a few, almost all for a more important route to make it to another important route. My favourite is the A40 (minor road alongside A40 that Oxfordshire CC is debating downgrading to a B road) being concurrent with the A418 so that the A418 (Oxford - Aylesbury road) can meet the A40 (dual carriageway from the M40 into Oxford).

[hbelkins]

Iowa 163 east of Oskaloosa and most of Iowa 27.

Those are done to keep a consistent number on a through route or corridor, though.