Interchanges between Conventional Roads

[vtk]

In OKC:
- Northwest Expy and May Av. Both are at-grade roadways except for the interchange.

I was going to object that Northwest Expy is indeed an expressway, until I saw all the business driveways mucking it up.  If I lived in OKC I'd be ticked at the planners for allowing that.  It's very similar to US 23 in Delaware County, Ohio, in that regard.

Your Okarche example also looks like it involves expressways – the roads themselves are designed to expressway standards – but a few private accesses here and there indicate there's no real access control.  I'm beginning to think Oklahoma doesn't know how to do a proper expressway, or maybe they loosened the rules at some point like North Carolina...

[Mergingtraffic]

CT-12 and CT-184, this intersection was recently improved. 

http://www.bing.com/maps/?v=2&cp=qwtxxk8ztxph&lvl=18&dir=0&sty=o&where1=Groton%2C%20CT&form=LMLTCC

[Coelacanth]

A few for Minnesota:

-One I came across the other day while driving: Pennsylvania Ave at Jackson St in St. Paul (http://g.co/maps/5jfjp)
-There are a few on Snelling Ave (MN 51) at County B2, Como Ave, Energy Park Dr, and Pierce Butler Route.
-Not a full interchange, but grade-separated anyway: County 81 at Lowry Ave/Wirth Pkwy (http://g.co/maps/7n8fq)
-Ayd Mill Road in St. Paul has pseudo-interchanges with a number of cross-streets (for example: http://g.co/maps/sqfbc)

This covers most of the ones I can think of. There's another set that I've been picturing in my mind by couldn't place until now.

Mississippi River Blvd in St Paul has "interchanges" with Marshall Ave and Ford Pkwy. Come to think of it, right across the river there are a couple more, at Franklin Ave and Lake St.

There's also the interchange between Wayzata Blvd (just south of 394)  and Wirth Pkwy in Minneapolis.

[berberry]

We have some scattered around Mississippi.  Jackson has only a couple I can think of:  a partial cloverleaf (four ramps, favoring 80) at US 80 and State Street and a railroad-induced interchange at Woodrow Wilson and Mill Street.  This last one is of the sort you sometimes see on older parkways, with very sharp turns on the ramps and virtually no merging space.

Another "standalone" interchange is planned for greater Jackson at Old Brandon Road (an ancient alignment of US 80) and Airport Road, adjacent to Jackson Int'l. 

Hattiesburg has the old cloverleaf at US 49 and US 11.  More modern cloverleafs that "stand alone" on otherwise open highway routes can be found on US 82 at US 61 (Leland), US 82 at US 49E (Greenwood) and US 45 at US 84 (Waynesboro, featuring CD protection for 84).  Many diamond interchanges can be found along state routes, notably including MS 25 between Jackson and Starkville.

[1995hoo]

Porter Street, Beach Drive, and Klingle Road in Northwest DC. This one would look quite overbuilt to anyone new to the area. Klingle Road used to continue west from this spot under Connecticut Avenue to where another piece of road with that name still exists, but it got washed out during a storm in 1991 and has never been rebuilt (the story of that can, and in fact does, fill various websites owned by supporters and opponents of rebuilding the road). If you flip over to the map view you can use the property lines to trace the road's route if you're so inclined.

[Ga293]

Here's a very compact cloverleaf at US 31 and AL 149 in Vestavia Hills, AL.

There's several at Redstone Arsenal, and one at Savannah River Site.

[pianocello]

Here's one in Waterloo, IA.

There are also a few along US-12 in Northwest Indiana (both serve the Port of Indiana) and an obscure cloverleaf at US-20 and IN-49 (not sure why it's there). Another similar cloverleaf exists along US-20 and IN-212 in Michigan City. Anyone know why INDOT would build it like that?

[Beeper1]

US-20 and MA-140 in Shrewsbury, MA. 

US-6 and Westcott Road in South Killingly, CT.

MA-2 and MA-63 has a weird semi-interchange near Erving, MA.

[bigboi00069]

Here is what i can think of off the top of my head in South Florida

US 441 @ FL 834
http://maps.google.com/?ll=26.274176,-80.201697&spn=0.00481,0.009645&t=h&z=17&vpsrc=6

US 441 @ FL 838
http://maps.google.com/?ll=26.136253,-80.202255&spn=0.004816,0.009645&t=h&z=17&vpsrc=6

US 1 @ Ives Dairy Road
This one is quite important though, because before it was built the intersection always had an insane amount of congestion and the railroad tracks right there made things much worse when a train came.
http://maps.google.com/?ll=25.963389,-80.146648&spn=0.004823,0.009645&t=h&z=17&vpsrc=6

FL 814 @ Lyons Road. This is an at-grade intersection but does have ramps that a multi-grade intersection would have
http://maps.google.com/?ll=26.232098,-80.185422&spn=0.004812,0.009645&t=h&z=17&vpsrc=6

Im sure theres more here, but thats what i can think of right now.

[jdb1234]

Here's a very compact cloverleaf at US 31 and AL 149 in Vestavia Hills, AL.

That interchange is actually in the city of Homewood, not Vestavia.


At the intersection of Palisades Drive and Palisades Blvd in Homewood, one of the movements involves going through a tunnel.

[froggie]

US-50 looks like a freeway there, and that's why I originally didn't list it, but upon reflection the "freeway" look is more out of geographical convenience. Notice the Beltway interchange just to the east.

Considering that the 1969 plan had US 50 becoming freeway from near Fairfax City east to Rosslyn...

[1995hoo]

US-50 looks like a freeway there, and that's why I originally didn't list it, but upon reflection the "freeway" look is more out of geographical convenience. Notice the Beltway interchange just to the east.

Considering that the 1969 plan had US 50 becoming freeway from near Fairfax City east to Rosslyn...

The interchange was built in the 1980s, though I don't know for how long it had been on the books. When I was a kid we lived fairly close to there on the other side of Fairfax Hospital and did our grocery shopping at the Giant that used to be on the corner there, so that construction project was one we passed through quite a bit. I remember during the gas shortages when the Shell station at the Gallows Road end had the lines set up so that you had to drive all the way around behind the Giant and then wait on line for the entire length of the back of the shopping center.

[Michael]

The interchange between NY 14 and NY 96 has always puzzled me, even when I was little.

The intersection of NY 5/US 20 and NY 96A just east of Geneva used to be a trumpet until the mid 90's, but I don't remember it.

I forgot about the ones in Wolcott and Watkins Glen until I read the pages posted by empirestate.

[berberry]

Most of these interchanges you folks are speaking of as "puzzling" are completely unfamiliar to me; I live nowhere near them.  So I don't know if this would be relevant to any of these specific cases, but people are sometimes puzzled by the presence of, for instance, the large cloverleaf interchange in Leland, MS, which during its first years served a junction of highways that maintained more than two lanes in only one direction away from the interchange.

The case of the Leland interchange, therefore, may or may not be similar to any of the others mentioned.  But the reason for that interchange, as I remember hearing it explained on the radio years ago on a WJDX public affairs program, was a high accident count at the previous intersection.  The safety of both US 82 and US 61 in Mississippi was substantially enhanced simply by removing all left turns at that accident-prone junction.

[xcellntbuy]

The exit ramps between NY 23 and US 9W in Catskill, NY has some of the attributes of an interchange between these two highways.  A couple of others of note would be NY 199/US 209 and US 9W in Kingston and US 209 and NY 28, also in the Kingston.

[twinsfan87]

One more (half) interchange for MN: In Montevideo on MN 7 at N 1st St (http://g.co/maps/bqsys). This is probably due to the grade on MN 7 and the fact that 1st Street is a main road for the city of Montevideo.

[NE2]

FL 814 @ Lyons Road. This is an at-grade intersection but does have ramps that a multi-grade intersection would have
http://maps.google.com/?ll=26.232098,-80.185422&spn=0.004812,0.009645&t=h&z=17&vpsrc=6

Those are called jughandles.

[vtk]

FL 814 @ Lyons Road. This is an at-grade intersection but does have ramps that a multi-grade intersection would have
http://maps.google.com/?ll=26.232098,-80.185422&spn=0.004812,0.009645&t=h&z=17&vpsrc=6

Those are called jughandles.

I thought a jughandle was a ramp that departs from a road to the right, then turns left to meet that same road at a roughly 90-degree angle.  That's not what's there on the map.

[NE2]

FL 814 @ Lyons Road. This is an at-grade intersection but does have ramps that a multi-grade intersection would have
http://maps.google.com/?ll=26.232098,-80.185422&spn=0.004812,0.009645&t=h&z=17&vpsrc=6

Those are called jughandles.

I thought a jughandle was a ramp that departs from a road to the right, then turns left to meet that same road at a roughly 90-degree angle.  That's not what's there on the map.

A jughandle can also be after the intersection.
http://www.state.nj.us/transportation/eng/documents/RDM/figure6q.shtm
http://wiki.openstreetmap.org/wiki/Jughandle

[twinsfan87]

Here's a few in Northern Wisconsin:

-US 8 at WIS 35 in St. Croix Falls
-US 8 at WIS 13 in Prentice (which is interesting that WIS 13 acts as the "freeway" here... I also wonder why this interchange is here since it's kind-of in the middle of nowhere)
-US 2 at US 51 in Hurley
-WIS 312 at US 12 in Eau Claire
-Don't know if these count, but interchanges still exist on Business US 53 at WIS 312, Birch St, and US 12 (used to be US 53 until the current freeway opened a few years ago)

[empirestate]

The exit ramps between NY 23 and US 9W in Catskill, NY has some of the attributes of an interchange between these two highways.  A couple of others of note would be NY 199/US 209 and US 9W in Kingston and US 209 and NY 28, also in the Kingston.

US 209 is pretty well a freeway around Kingston, so I don't think I'd count those.

[Chicagosuburban]

*IL-38 and IL-59 in West Chicago, IL
*IL-38 and IL-53 in Glen Ellyn, IL
*US-20 and IL-59 in Bartlett, IL
*US-30 and IL-31 in Montgomery, IL. But this one is probably because IL-31 runs right next to the Fox River.
*US-14 and IL-68 in Inverness, IL
*US-14 and IL-31 in Crystal Lake, IL

[NE2]

*US-14 and IL-31 in Crystal Lake, IL

http://www.angelfire.com/chicagolandhistory/crystallakeroads.html

[Lightning Strike]

Here's one in Waterloo, IA.

There are also a few along US-12 in Northwest Indiana (both serve the Port of Indiana) and an obscure cloverleaf at US-20 and IN-49 (not sure why it's there). Another similar cloverleaf exists along US-20 and IN-212 in Michigan City. Anyone know why INDOT would build it like that?

Not sure why they did it but living in NW Indiana for some time IN-49 goes right into the Indiana Dunes State Park which is a popular beach destination for locals and tourists and US-20 if I remember correctly has a speed limit of 55 through that area in between the towns of Chesterton and Michigan City, so it could have been done for matter of making traffic flow simple and non-congested with lights...but that's a guess, if someone has the real reason correct me.

[TheStranger]

Here's one I randomly discovered while looking through Google Maps: Route 79 at US 40 in Hebron, Ohio, which seems to be pretty recent - part of a bypass with just this exit, at-grades at all other junctions north and south of there:

http://maps.google.com/maps?q=E+Main+St+%26+Wooster+St,+Hebron,+OH&hl=en&ll=39.960001,-82.482412&spn=0.013141,0.019419&sll=39.961974,-82.475545&sspn=0.013141,0.019419&vpsrc=6&hnear=E+Main+St+%26+Wooster+St,+Hebron,+Licking,+Ohio+43025&t=k&z=16\

---

A couple of other NorCal examples:

- Taylor Boulevard and Pleasant Hill Road, Pleasant Hill.  This was slated to be included in the original corridor for unbuilt Route 77.

http://maps.google.com/maps?q=Pleasant+Hill+Rd+%26+Holland+Dr,+Pleasant+hill,+CA&hl=en&sll=37.923347,-122.095463&sspn=0.013524,0.019419&vpsrc=0&hnear=Pleasant+Hill+Rd+%26+Holland+Dr,+Walnut+Creek,+Contra+Costa,+California+94597&t=h&z=17

- 12th and 14th Streets in Oakland near Lake Merritt, which may have been part of a 1930s Route 17 alignment:
http://maps.google.com/maps?q=14th+St+%26+12th+St,+Oakland&hl=en&ll=37.800934,-122.259121&spn=0.027094,0.038838&sll=37.798954,-122.260746&sspn=0.004814,0.004855&vpsrc=6&hnear=14th+St+%26+12th+St,+Oakland,+Alameda,+California+94612&t=h&z=15