Triple concurrencies in MI?

[Rupertus]

It occurred to me recently that triple concurrencies are relatively rare in Michigan, so I took a stab at listing as many as I can. One likely reason is that compared to a state like Ohio, we just don't have nearly as many numbered highway routes here. Anyone have anything to add to this list, or have an idea of what it would look like for a different state?

US 2/US 41/M-35 (the longest one, from Escanaba to Gladstone)
US 2/US 141/M-95 (Iron Mountain)
US 31/M-37/M-72 (Traverse City)
US 131/M-66/M-72 (Kalkaska)

Here are a few that involve business routes, although I'm not sure if I count business routes for this exercise:   

BR I-75/BR US 24/M-59 (Pontiac; west M-59 is concurrent around the loop, but not east M-59)
BR I-94/BR US 127/M-50 (Jackson)
BR I-94/BR US 131/M-43 (Kalamazoo)
BR I-94/M-37/M-96 (Battle Creek)

There are also triplexes (triplices?) that no longer exist as well, due to one or more (or all) of the routes being removed; someone who's more familiar than me with the state map as it has changed over the years might be able to come up with more:

I-75/US 10/US 23 (from Bay City to I-75 exit 93)
I-96/I-69/US 27 (Lansing)
US 23/US 27/US 31 (Mackinaw City)

[hotdogPi]

Here are those in Massachusetts that I know of (which is mostly northeast MA):

1/3/93
1/95/128
2/3/16
2A/3/60
2A/12/31
3/95/128
62/70/110


US route
Interstate

However, in New Hampshire, 4/9/202 is an important one.

[rawmustard]

There's also M-33/M-72/F-32 going north from Mio a few miles. I'm pretty sure OP got all the other current ones. Historically there have been quite a few, and generally those occurred in the downtowns of major cities (with the exceptions already noted).

SPH-L710

[bulldog1979]

There was the US 41/M-28/M-35 concurrency for almost 30 years between Baraga and Negaunee.

[JCinSummerfield]

The creation of M-179 was so there wouldn't be a triplex in Hastings.  The naqtural plan would have extended M-79 west through Hastings along a duplexed route.  MDOT really doesn't like them.

[bassoon1986]

Louisiana will be tough...many state routes, and if there are 3 state routes together it is probably a very short concurrency and may or may not be well signed. I'm going to start the search and get back.

[xonhulu]

I think there are only three triple concurrencies in Oregon:

I-205/OR 213/OR 224

I-84/US 30/US 395

US 20/US 26/OR 201

Technically, OR 82, OR 350 and OR 351 all end at a single intersection in Joseph, but none are concurrent, and as of last summer the latter 2 routes were still unsigned.

I know Idaho has some triple concurrencies and at least one quadruple concurrency (I-84/US 20/US 26/US 30).

Washington has at least three triple concurrencies: 

I-90/US 2/US 395

I-182/US 12/US 395

I-82/US 12/US 97

There might be others, but I can't think of them at the moment.

[DeaconG]

The only one I know of in Florida off the top of my head is US 17/92/441 in Orlando.

[NE2]

The only one I know of in Florida off the top of my head is US 17/92/441 in Orlando.

At both ends of that one: US 17/US 92/US 192 and US 17/US 92/SR 50. Other signed ones include US 1/US 23/US 301, US 1/US 90/SR 13, US 27/US 301/US 441, and I-10/US 17/SR 228 (only sort of signed). There used to be a 4: US 1/US 17/US 90/SR 228.

[akotchi]

Four locations come to mind in Pennsylvania (others can clue me in to any more).
I-99/U.S. 322/U.S. 220
I-376/U.S. 22/U.S. 30
PA 332/PA 413/PA 532
and I think, with the reroute in Lewistown, there is a short triple with U.S. 22/U.S. 322/U.S. 522

[cwf1701]

Alabama has a number of triple concurrencies. Many like US-431/SR-1/SR-21 are signed in the field as US-431/SR-21 with SR-1 hidden. SR-1 is the hidden number for US-431 in Alabama. How many other triple concurrencies are signed in the field in other states with one or two of its routes hidden (besides Alabama and Georgia)?

[hbelkins]

Four locations come to mind in Pennsylvania (others can clue me in to any more).
I-99/U.S. 322/U.S. 220
I-376/U.S. 22/U.S. 30
PA 332/PA 413/PA 532
and I think, with the reroute in Lewistown, there is a short triple with U.S. 22/U.S. 322/U.S. 522

I-180/US 15/US 220 in Williamsport

There are tons in Kentucky. I wouldn't even try to list all of them.

[bassoon1986]

Louisiana:

I found out that there were a lot more than I originally thought. Most of them are very short, as expected. And I realized most of them are recent. The entrance of US 63 and US 425 in Louisiana created many 3-plexes. Very few are 3 Louisiana state routes, and there are not too many further south, although I may have missed a few. I'm sure Urban Prairie Schooner will know of other historical routings

US 79/US 80/ LA 169 in Greenwood               .51 mile
US 79/ US 80/ LA 159 in Minden                     .28 mile
US 371/ LA 4/ LA 154 in Ringgold                   .04 mile
US 63/ US 167/ LA 146 in Ruston                   3.6 miles
US 63/ US 167/ LA 822 near Dubach               1 mile
US 63/US 167/LA 151 in Dubach                     .14 mile
US 63/US 167/ LA 2 in Bernice                        .33 mile
US 63/ US 167/ ALT 2 in Bernice                     1.1 miles
LA 2/LA 15/LA 33 in Farmerville                       .47 mile
US 80/LA 15/ LA 617 in West Monroe              .25 mile
Bus US 165/LA 15/ LA 3280 in Monroe            .9 mile    (LA 3280 is not signed at all, maybe never was)
US 165/US 425/ LA 2                                     7.6 miles
US 425/ LA 15/ LA 562 in Wisner                     .3 mile
US 425/ LA 15/ LA 128 in Gilbert                      .6 mile
US 425/LA 15/ LA 865 in Winnsboro                  .09 mile
US 425/ LA 15/LA 4 in Winnsboro                       .33 mile
US 425/LA 15/ LA 132 in Mangham                      .73 mile
US 425/LA 137/ LA 584 south of Rayville              .12 mile      (LA 137 may be decomissioned now as it is completely covered by US 425)
US 425/LA 133/ LA 134 in Oak Ridge                    .7 mile
US 84/LA 8/LA 772 in Jena                                   1 mile
US 71/ US 165/ LA 28 in Alexandria                      2 miles
I-49/Bypass US 71/LA 28 in Alexandria               1.7 miles
I-49/Bypass US 71/US 167 in Alexandria             4.3 miles       
Bus. 165/ Bus 28/ LA 1 in Alexandria                  .4 mile
LA 107/ LA 115/ LA 1192 n. of Marksville            .12 mile
US 84/US 371/LA 1 between Mansfield and Coushatta   2.8 miles
US 71/US 84/LA 486 near Campti                          .7 mile
US 167/LA 10/LA 103 near Opelousas                    1.4 miles
US 167/ LA 10/ LA 29  in Ville Platte                      .38 mile
LA 10/LA 16/LA 25 in Washington                         1.2 miles
US 61/LA 10/ LA 965 near St. Francisville               .15 mile

LA 1/LA 6/LA 3175? I don't remember 3175 ever being signed although it's on street blades. I guess it was made to give the Natchitoches bypass one number. It isn't present in the state log either on our site, although it doesn't include recent additions.

Old ones that I know of:
US 79/ US 80/ US 171 in Shreveport        2.6 miles     before US 171 became truncated at it's present terminus
US 79/ US 80/ LA 7 in Minden                  3.3 miles     before I-20 came along and LA 7/US 371 became rerouted
US 71/ US 165/US 167 in Alexandria         6.4 miles      before the US 167 expressway was built in Pineville
US 65/ US 84/ US 425 Ferriday/Vidalia      9.9 miles in LA (12.7 total)       short period of time when US 425 was created and before US 65 became truncated
US 51/US 61/US 65/ US 90 in New Orleans

US 71/ US 190/ LA 1?
-I don't think present LA 1 existed when the US 71 and US 190 concurrency existed. It may have been numbered as 2 different highways at that point. (New Roads highway and highway from Port Allen south)

US 71/US 79/US 80?
-I seem to remember reading somewhere that these 3 shared a bridge for a short period of time? But I can't remember if they shared the older Texas St bridge or the old Traffic Street bridge? Maybe 71 was put on the Texas St. bridge after the Traffic bridge was torn down?
         

[NWI_Irish96]

If this thread is going to be about triple concurrencies everywhere instead of just in Michigan, shouldn't it move to the General section?

[Brandon]

If this thread is going to be about triple concurrencies everywhere instead of just in Michigan, shouldn't it move to the General section?

I would concur.  The OP obviously had a differing idea of the content of this thread than those who replied.

[formulanone]

The only one I know of in Florida off the top of my head is US 17/92/441 in Orlando.

At both ends of that one: US 17/US 92/US 192 and US 17/US 92/SR 50. Other signed ones include US 1/US 23/US 301, US 1/US 90/SR 13, US 27/US 301/US 441, and I-10/US 17/SR 228 (only sort of signed). There used to be a 4: US 1/US 17/US 90/SR 228.

There's a tiny stretch of East University Avenue in Gainesville that's signed as FL 20/24/26. I think it's the only part of Florida with a three-way that's all state roads.

There's also M-33/M-72/F-32 going north from Mio a few miles.

I always thought that was a bit of an oddity to have a county road overlap with a state road, but I guess it aids in navigation...(if it's signed properly, that is)

[NE2]

If this thread is going to be about triple concurrencies everywhere instead of just in Michigan, shouldn't it move to the General section?

I would concur.  The OP obviously had a differing idea of the content of this thread than those who replied.

Looks like the OP wanted it to spill out:

Anyone have anything to add to this list, or have an idea of what it would look like for a different state?

[NWI_Irish96]

Indiana:

IN 1 with IN 116 and IN 124 in Bluffton
IN 3 with IN 56 and IN 203 east of Scottsburg
IN 3 with IN 44 and US 52 in Rushville
IN 3 with US 35 and IN 67 in Muncie
US 6 with I-80/94 in Lake Station/Gary/Hammond and with US 41 and I-80/94 in Hammond
IN 9 with US 36 and IN 67, then with US 36, IN 38 and IN 67, then with IN 38 and IN 67 in Pendleton
IN 9 with IN 67 and I-69 in Anderson
US 12 with US 20 and US 41 in Hammond
IN 13 with IN 18 and IN 19 west of Marion
IN 18 with US 52 and IN 55 in Fowler
IN 18 with IN 39 and US 421 in Delphi
IN 19 with IN 22 and US 35 east of Kokomo
US 24 with US 33 and I-69, then with US 33 and I-469, then with US 30 and I-469 in Fort Wayne
US 27 with US 33 and US 224 in Decatur
IN 28 with US 41 and IN 55 in Attica
IN 32 with IN 47 and US 136 and then with IN 47 and US 231 in Greencastle
IN 37 with IN 56 and US 150 in Paoli
IN 38 with IN 39 and US 421 in Frankfort
US 41 with US 40 and US 150 in Vincennes
US 41 with IN 62 and IN 66 in Evansville
IN 46 with IN 67 and US 231 in Spencer
IN 57 with I-69/164 north of Evansville
IN 62 with I-64 and US 150 in New Albany

And, of course, the mega concurrency of I-465 with various roads in Indianapolis.

With the exception of parts of I-469 in Fort Wayne, I've driven every mile of each of these.

[Rupertus]

Nice work, folks. I hadn't really expected that we would get very far beyond confirming my understanding of what we had in my own state, but we've done that and much more, so for forum purposes I'd absolutely welcome shifting it over to the general board and giving people from other parts of the country a chance to weigh in.

As to that photo from Mio, I didn't consider county routes in my own list because those aren't signed with a great degree of consistency around the state. That's quite a find to have an assembly where the top shield is a county route.

[triplemultiplex]

There are almost too many across the pond (er... Lake Michigan) to count.  A handful of meandering state highways that would be different routes elsewhere really pad the stats.

By the end of the year, Wisconsin will be in the unique position to have not one, but two triple interstate concurrencies; due to the fact that we are keeping 894 once the I-41 shields go up.  Then once I-70 gets rerouted onto the new bridge at St. Louis, Wisconsin will have ALL of them; at least for a little while.  Indiana seems poised to break that monopoly with 69/74/465.

I-41 will also create four other triple concurrencies and turn two of them into quadruple ones.
(I-41/US 41/US 141; WI 32/I-41/US 41; I-41/US 41/US 45; I-41/US 45/I-894)
(I-41/US 41/US 45/WI 100; I-41/US 41/US 45/WI 167)

[theline]

Indiana:

IN 1 with IN 116 and IN 124 in Bluffton
IN 3 with IN 56 and IN 203 east of Scottsburg
IN 3 with IN 44 and US 52 in Rushville
IN 3 with US 35 and IN 67 in Muncie
US 6 with I-80/94 in Lake Station/Gary/Hammond and with US 41 and I-80/94 in Hammond
IN 9 with US 36 and IN 67, then with US 36, IN 38 and IN 67, then with IN 38 and IN 67 in Pendleton
IN 9 with IN 67 and I-69 in Anderson
US 12 with US 20 and US 41 in Hammond
IN 13 with IN 18 and IN 19 west of Marion
IN 18 with US 52 and IN 55 in Fowler
IN 18 with IN 39 and US 421 in Delphi
IN 19 with IN 22 and US 35 east of Kokomo
US 24 with US 33 and I-69, then with US 33 and I-469, then with US 30 and I-469 in Fort Wayne
US 27 with US 33 and US 224 in Decatur
IN 28 with US 41 and IN 55 in Attica
IN 32 with IN 47 and US 136 and then with IN 47 and US 231 in Greencastle
IN 37 with IN 56 and US 150 in Paoli
IN 38 with IN 39 and US 421 in Frankfort
US 41 with US 40 and US 150 in Vincennes
US 41 with IN 62 and IN 66 in Evansville
IN 46 with IN 67 and US 231 in Spencer
IN 57 with I-69/164 north of Evansville
IN 62 with I-64 and US 150 in New Albany

And, of course, the mega concurrency of I-465 with various roads in Indianapolis.

With the exception of parts of I-469 in Terre Haute, I've driven every mile of each of these.

Great job of compiling that list, cabiness! I've got nothing to add, unless you want to count business routes. If you do, there is a very short concurrency of SR-933, Business US-31, and Business US-20 in downtown South Bend.

I presume in the last sentence, you mean I-469 in Ft. Wayne.

I don't think you can count an SR 57 concurrence with I-69 and 164. I'm pretty sure I-69 and 164 don't overlap. I-69 ends (for now) at I-64 and I-164 starts at the same point. When I-164 gets converted to I-69, they still won't overlap.

[bulldog1979]

I-41 will also create four other triple concurrencies and turn two of them into quadruple ones.
(I-41/US 41/US 141; WI 32/I-41/US 41; I-41/US 41/US 45; I-41/US 45/I-894)
(I-41/US 41/US 45/WI 100; I-41/US 41/US 45/WI 167)

Actually, US 41 will be moved in the Milwaukee area to follow I-41, so I-894/US 45 will be upgrade from a double to quadruple I-41/I-894/US 41/US 45.

[NWI_Irish96]

Great job of compiling that list, cabiness! I've got nothing to add, unless you want to count business routes. If you do, there is a very short concurrency of SR-933, Business US-31, and Business US-20 in downtown South Bend.

I presume in the last sentence, you mean I-469 in Ft. Wayne.

I don't think you can count an SR 57 concurrence with I-69 and 164. I'm pretty sure I-69 and 164 don't overlap. I-69 ends (for now) at I-64 and I-164 starts at the same point. When I-164 gets converted to I-69, they still won't overlap.

Did some routings get changed in downtown SB?  Last I knew, there were no concurrencies between BUS 20 and BUS 31.  BUS 20 follows Colfax/Lafayette/Lincolnway and BUS 31 follows Michigan/St. Joseph northbound and Main southbound.

I did accidentally type Terre Haute when I mean Fort Wayne.  I have fixed that.

You are correct on the last point.  I-69 is taking over I-164, but I-164 is going away, so at no time will there be a triple concurrency.

[SD Mapman]

For SD we have:
I-90/US 14/US 85
I-90/US 14/SD 34
I-90/US 14/SD 79
US 12/US 83/SD 20
US 18/US 183/SD 44
US 183/SD 44/SD 53
US 83/US 14/SD 34
SD 34/Truck US 14/Truck US 83 (does this count?)
US 14/SD 34/SD 1806
There's a quad concurrency in Rapid, even:
I-90/US 14/SD 79/Truck US 16

[theline]

Did some routings get changed in downtown SB?  Last I knew, there were no concurrencies between BUS 20 and BUS 31.  BUS 20 follows Colfax/Lafayette/Lincolnway and BUS 31 follows Michigan/St. Joseph northbound and Main southbound.

No routing change. Because of one-way streets, EB BR-20 cannot turn south on Lafayette Street. Lafayette is one-way north. Instead, 20 continues one block east on LaSalle, and then turns south on Main Street. It's on Main Street that EB BR-20 is concurrent for one block with SB BR-31 and SB SR-933. BR-20 then turns east on Colfax Street.


Traveling in the other direction, WB BR-20 has no concurrency with the other highways.


So this maybe counts as a half-concurrency. I always thought it a little weird that the EB and WB routes cross paths at LaSalle and Lafayette and cross again at Main and Colfax.