Interchanges between Conventional Roads

[WNYroadgeek]

NY 104/Monroe CR 150: http://g.co/maps/8dufk

Actually, that's not CR 150 at that point, it's reference route 940K (better known as Mt. Read Blvd.).

Blame Google Maps for that one.

[empirestate]

NY 104/Monroe CR 150: http://g.co/maps/8dufk

Actually, that's not CR 150 at that point, it's reference route 940K (better known as Mt. Read Blvd.).

Blame Google Maps for that one.

I'm not seeing where Google shows it as CR 150?

[Kacie Jane]

When in doubt, blame Google maps, even when you know full well it's your own damn fault.

Looks like there's also a diamond interchange (funny-shaped, thanks to the frontage roads) just south of there on Mt. Read Blvd.

[empirestate]

Looks like there's also a diamond interchange (funny-shaped, thanks to the frontage roads) just south of there on Mt. Read Blvd.

Yes, at Ridgeway Ave. (CR 111...but not right there). Mount Read Blvd. is a funny road...it's an engineer's expressway (so, ineligible for the thread by some of the above arguments) with frontage roads and these couple of interchanges, plus a few other assorted slip ramps along the way, but doesn't seem to serve a whole lot of traffic. It goes through industrial areas (Kodak Park is between the two interchanges) and is just generally gritty. For example, what for a time was Rochester's only all-nude strip club was there. I recall reading that it was an early iteration of the Outer Loop, later supplanted by NY 390 to its west.

[D-Dey65]

I wouldn't even call it all that odd...there are oodles of junctions like this elsewhere downstate, on Long Island, and in the Buffalo area, just in New York alone.

Yes, but the ones on Long Island are primarily formerly proposed to be upgraded into limited-access highways of one form or another.

[sp_redelectric]

Within Portland, OR and in the immediate area there are quite a few:

Barbur Boulevard and 26th Way
Barbur Boulevard and Multnomah Boulevard (the overpass was built when Multnomah Boulevard was a railroad, one ramp SB-WB was added when Multnomah Boulevard was built)
Barbur Boulevard and Capitol Highway (Beaverton-Hillsdale Highway) (don't be fooled by "Capitol Highway" being called a "highway", it hasn't acted as a "highway" since the 1930s when Barbur Boulevard was constructed.)
Naito Parkway (formerly Front Avenue) and the the west end of the Ross Island Bridge (U.S. 26)
Powell Boulevard (U.S. 26) and S.E. 17th Avenue
McLoughlin Boulevard (Oregon 99E) and S.E. Milwaukie Avenue
McLoughlin Boulevard and Bybee Boulevard
McLoughlin Boulevard and Tacoma Street/Johnson Creek Boulevard
Milwaukie Expressway (Oregon 224) and Lake Road - although 224 is technically a divided expressway underneath Lake Road, there are signallized intersections immediately northwest and southeast of the interchange.
Interstate Avenue and N.E. Broadway
Greeley Avenue and Going Street
N.E. Columbia Boulevard and 33rd Drive
N.E. 82nd Avenue (Oregon 213) and Killingsworth (U.S. 30 Bypass)
82nd and Columbia
N.E. 122nd Avenue and Sandy Blvd. (U.S. 30 Bypass)
Marine Drive and 223rd Avenue

Outside of Portland:

U.S. 30 at Knappa
Oregon 18 at Dayton, McMinnville (Three Mile Lane, Oregon 99W), Sheridan (two interchanges), Willamina (Oregon 18B and 22), Fort Hill, Spirit Mountain Casino, and U.S. 101
Oregon 22 at Oregon 223 and 99W in Rickreall, West Salem (Edgewater, Rosemont, Wallace Road)
In Salem, Mission Street at 12th/13th Avenues
In Woodburn, Oregon 214 at Front Street
North of Hubbard, Oregon 99E and 551
In Corvallis, Oregon 99W/U.S. 20/Oregon 34 junction south of downtown

[WNYroadgeek]

NY 104/Monroe CR 150: http://g.co/maps/8dufk

Actually, that's not CR 150 at that point, it's reference route 940K (better known as Mt. Read Blvd.).

Blame Google Maps for that one.

I'm not seeing where Google shows it as CR 150?

It shows it as CR 150 north of the interchange: http://g.co/maps/unymu

Also, this: http://empirestateroads.com/cr/crmonroe.html

[empirestate]

It shows it as CR 150 north of the interchange: http://g.co/maps/unymu

Ah, I see, it's in the StreetView address window! Yeah, that would be called Mt. Read Blvd. locally; nobody uses or even knows the CR numbers in Monroe County. And you're right, not too far north of the interchange state maintenance ends and it does become CR 150, just not actually at the interchange. (The transition point is a little random, and I'm not 100% certain exactly where it is, frankly. It's at or near Joann Drive.)

Also, this: http://empirestateroads.com/cr/crmonroe.html

Hmmm, yes I seem to be somewhat familiar with that page.

[NE2]

The transition point is a little random, and I'm not 100% certain exactly where it is, frankly. It's at or near Joann Drive.

http://gis.ny.gov/gisdata/quads/drg24/o17.htm clearly shows it to be just north of Joanne Drive.

[empirestate]

The transition point is a little random, and I'm not 100% certain exactly where it is, frankly. It's at or near Joann Drive.

http://gis.ny.gov/gisdata/quads/drg24/o17.htm clearly shows it to be just north of Joanne Drive.

That's where I believe it to be, but I've looked at enough other sources to cast at least a little doubt. There's no clear pavement change to give away the exact spot, but there are reference markers up to Joanne Drive.

[froggie]

One that hasn't been mentioned yet:  Cliff Gookin Blvd in Tupelo, MS has a trumpet-style interchange at Tupelo High School.  Unless any of you know of other examples, it's perhaps the only case of an interchange built to directly serve a high school.

[akotchi]

There is actually one outside of Atlantic City, NJ.  U.S. 40-322 has a trumpet interchange serving Atlantic City High School.

EDIT:  I just looked at an aerial for this area and saw that there are some loop ramps in this interchange as well for u-turn movements.

[cpzilliacus]

There's this interchange in the White Oak area of Silver Spring, Montgomery County, Maryland, between U.S. 29 (Columbia Pike) and Md. 650 (New Hampshire Avenue), which is at least 45 or 50 years old.

It was, for decades, the only grade-separated interchange in Montgomery County that was not on an Interstate or on the federal Clara Barton Parkway, though that is no longer the case, as several new interchanges on U.S. 29 have been built north of this location in recent years, and there's also one on Md. 355 (Rockville Pike) at the new Montrose Parkway.

[HighwayMaster]

In Akron, on SR-93 (Manchester Road), there are a set of ramps for Kenmore Boulevard and Maryland Avenue. It's between I-76/77 and I-277/US-224 (the latter of which is closed for 4 weeks due to repaving, BTW)

[D-Dey65]

Florida:
US 301 and US 441 in Reddick, Florida
US 301 and FL 24 in Waldo, Florida
US 98 and Pasco CR Alternate 35 in Richland, Florida

South Carolina:
US 21-ALT 17 and SC 68 in Yemassee, South Carolina

New York:
US 9W used to have a fly-under interchange with NY 303 that was southbound only to NY 303 and northbound only from NY 303. Instead of upgrading it, they tore it down and turned it into an at-grade intersection slightly further south back in the late-1980's. I wish I knew exactly when in the late-1980's it was torn down, so I could get the citation tag on the subject off of Wikipedia. I know it was sometime after the second road construction bond passed by the New York State Legislature.

[Kacie Jane]

http://binged.it/IWAjXj

Tacoma, WA: Union Ave and South Tacoma Way.  Necessary because South Tacoma Way is in the Nalley Valley, while Union Avenue is on a viaduct over the valley.

[bulldog1979]

I did anyone mention the trumpet interchange between US 51 and US 2 in Hurley, WI, yet?

[roadman65]

US 6 and NY 293 near Harriman, NY.  Two roads that are two lanes that intersect with a trumpet.  The only thing  more odd is  the fact that US 6 is not dominate here, spite hardly any traffic goes from EB to NB and SB to WB.  NY 293 is the main body, with US 6 exiting itself EB and WB goes through the trumpet ramp to merge into NY 293.

[PurdueBill]

NC 49 and NC 73 have a 7/8 cloverleaf interchange (with two-way ramps and one left turn) near Mount Pleasant.  It wasn't made to accommodate future widening of NC 49 (and it's 4 lanes very nearby), as the bridge only fits two-lane 49 under it.

[nwi_navigator_1181]

There are quite a few here in Northwest Indiana.

Indiana 49 has two: a two-way quarter cloverleaf connecting U.S. 12, seen here, and one just half a mile south at U.S. 20, seen here (note the access to residential areas in the northeast quadrant).

Since Indiana 49 is near freeway standard south of the Toll Road, I'll mention these in passing, an interchange with U.S. 6, a future interchange at Vale Park Road (which was once a traffic light controlled intersection, but is currently being rebuilt due to a high number of fatal accidents), another one at Indiana 2 (LaPorte Road), and a parclo at U.S. 30.

Here's another one at U.S. 20/35 and Indiana 212 in Michigan City.

U.S. 12 has it's fair share in Porter County, including the main entrance to ArcelorMittal Steel, seen here...

...and the Indiana 249 north terminus and the Port of Indiana entrance, seen here...

...and this hard to explain interchange between U.S. 12, Indiana 249, and the entrance to U.S. Steel Midwest and the Portage Lakefront, seen here.

Finally, I don't know if you count this, but here's one between County Line Road and the entrance to Indiana Dunes West Beach.

[roadman65]

I forgot to mention near San Diego, along the coastal route CA 75 there is one interchange when I was there back in 1988.  It was with a park road that led to a beach parking area.  However, the grad separation is only on SB CA 75, while the NB lanes intersected with the park road at grade.

Near Scranton, PA you have the same with PA 435 and PA 348 is a partial interchange you can say.  Northbound PA 435 is grade separated from PA 348 with ramps, while SB PA 435 intersects with PA 348.

In Miami area you have the eastern end of FL 826 have an intersection with FL A1A.  However to ease traffic flow at this junction, a flyover was added to carry left turn traffic from NB FL A1A to WB FL 826, making this into another partial interchange that is one of many along the coast in Miam-Dade and Broward Counties in FL.

[texaskdog]

Ayd Mill Road in Saint Paul.  Was built to connect to I-35W (which it finally does) and I-94 which it does not.  Built like a freeway with exits next to a railroad track below regular ground level but has stoplights.  NIMBYs won't allow it to be connected (even though it takes traffic out of their neighborhood.

Interchanges being the two-way freeway-like connections between the two roads with the stoplights.

[vtk]

Here's a new one being built in the Columbus area:

http://franklincountyengineer.org/2012%20Projects/groveport_road.htm

Click the Engineering Schematic PDF to see the design.  It's actually more like a visualization shown at public meetings than an actual engineering schematic.

As far as I know, this is the first instance of Franklin County (not ODOT) building a road bridge over another road solely for the purpose of improving traffic flow.

[TheStranger]

I forgot to mention near San Diego, along the coastal route CA 75 there is one interchange when I was there back in 1988.  It was with a park road that led to a beach parking area.  However, the grad separation is only on SB CA 75, while the NB lanes intersected with the park road at grade.

It's still there!

http://maps.google.com/maps?q=Silver+Strand+Blvd+%26+Coronado+Cays+Blvd,+Coronado,+CA&hl=en&sll=32.625696,-117.138022&sspn=0.006208,0.013078&hnear=Silver+Strand+Blvd+%26+Coronado+Cays+Blvd,+Coronado,+San+Diego,+California+92118&t=m&z=16

[drummer_evans_aki]

Here's the oddest interchange in Oregon...

NE Marine Drive and NE 223rd Ave in Portland.