Interchanges between Conventional Roads

[1995hoo]

Kirby Road and Old Dominion Drive in McLean, Virginia. Could be a situation of terrain making it easier and cheaper just to do this, but I don't know.

[Revive 755]

Grand and Forrest park road.

I probably would not count this one since Forest Park Boulevard feeds into I-64 east of this interchange.  St. Louis City is planning on doing something here that could include replacing this interchange with an at-grade however.

Big Bend road Not sure this one counts.

I wouldn't count this one since Big Bend is mainly depressed there to get under the UP tracks; if the tracks were not that (or had much lighter traffic), Big Bend would be at grade there.  The SB movements are also signalized here.

More for Missouri

* Ashby Road at Midland - Could be questionable since I recall hearing that Midland was built on an old streetcar line
http://maps.google.com/maps?hl=en&ll=38.704422,-90.388877&spn=0.003537,0.0103&t=k&z=18&vpsrc=6

* US 61-67-50 at MO 366 - the old, tight cloverleaf had been switched to a diamond, I think back when the bridge was replaced in the 1980's(?).  Nowdays MoDOT probably would have removed the bridge and put in a poorly functioning at grade intersection.
http://maps.google.com/maps?hl=en&ll=38.555343,-90.406537&spn=0.003545,0.0103&t=k&z=18&vpsrc=6

* US 67 at Taylor Road - defective due to overloading from channeling I-270 movements through this interchange.
http://maps.google.com/maps?hl=en&ll=38.781337,-90.354846&spn=0.007067,0.020599&t=k&z=17&vpsrc=6

* Hanley Road at Eager Road in Richmond Heights - Not due to grade issues since Eager used to have an at-grade intersection with Hanley
http://maps.google.com/maps?hl=en&ll=38.628941,-90.333812&spn=0.003541,0.0103&t=k&z=18&vpsrc=6

* MO 340 at Couer de Ville Drive - Added when the I-270 interchange was converted to a SPUI; used to be at grade.
http://maps.google.com/maps?hl=en&ll=38.672729,-90.44618&spn=0.007078,0.020599&t=k&z=17&vpsrc=6

* MO 94 at I-70 north and south outer roads - Added when the I-70 interchange was converted into a SPUI; used to be at grade.
http://maps.google.com/maps?hl=en&ll=38.776519,-90.507699&spn=0.007068,0.020599&t=k&z=17&vpsrc=6

Questionable ones

* MO 367 at Chambers Road - MO 367 is still kind of an expressway here; south of this interchange is where the expressway characteristics fade:
http://maps.google.com/maps?hl=en&ll=38.75113,-90.235959&spn=0.00707,0.020599&t=k&z=17&vpsrc=6

* River des Peres Boulevard at MO 366 - Questionable due to the parkway nature of River des Peres Boulevard, but it is the only one on that corridor.
http://maps.google.com/maps?hl=en&ll=38.5862,-90.314103&spn=0.005011,0.0103&t=k&z=18&vpsrc=6

* US 67 at Monsanto, MO 340, Dorsett/Midland - I was going to say these were questionable due to the semi-expressway (although speedtrap) nature of US 67 as an early bypass for St. Louis, but looking through Historic Aerials.com, it appears some of these were added after I-270 would have been opened or well under construction.  I'm not counting the US 67/Rte D interchange due to the expressway nature of Rte D west of the interchange.
http://maps.google.com/maps?hl=en&ll=38.67164,-90.396538&spn=0.014156,0.041199&t=k&z=16&vpsrc=6
http://maps.google.com/maps?hl=en&ll=38.707356,-90.406322&spn=0.007075,0.020599&t=k&z=17&vpsrc=6

* US 67 at MO 180 and Rte B - Again questionable due to the semi-expressway nature of US 67.  The MO 180 interchange was once a super-tight cloverleaf, while the Rte B interchange was relocated due to the airport expansion.  The prior Rte B interchange was also once a super-tight cloverleaf that had been converted to a diamond.  Both of the cloverleafs predated I-70.
http://maps.google.com/maps?hl=en&ll=38.738047,-90.397911&spn=0.003536,0.0103&t=k&z=18&vpsrc=6
http://maps.google.com/maps?hl=en&ll=38.749824,-90.392075&spn=0.00707,0.020599&t=k&z=17&vpsrc=6

* MO 100 at Des Peres Road - Questionable due to the semi-expressway nature of MO 100 west of I-270.
http://maps.google.com/maps?hl=en&ll=38.602752,-90.449452&spn=0.007085,0.020599&t=k&z=17&vpsrc=6

[ftballfan]

Northland Dr (M-44) at West River Dr north of Grand Rapids has a loop ramp NB-WB while SB-EB traffic uses a side road. So basically, traffic can turn left off of West River Dr, but not off of Northland Dr. This may be questionable as the crossing is at-grade.

[Ian]

US 322 at PA 261 in Garnet Valley, PA

US 322 at PA 452 near Marcus Hook, PA

US 1 at PA 352 in Lima, PA

US 13/40 at US 202/DE 141 in New Castle, DE. US 202/DE 141 even has an exit number!

DE 100/141 at DE 52 in Greenville, DE

[twinsfan87]

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)

[DTComposer]

In SoCal:

-La Cienega Boulevard and Slauson Avenue, although you could argue that La Cienega is functioning as an expressway at the point. It's the interchange for the "unconstructed" portions of CA-170 and CA-90.

-Hyperion Avenue and Waverly Avenue (Los Feliz)
-Wilshire Boulevard and Bonsall Avenue (West L.A.)
-Shoreline Drive and Golden Shore (Long Beach)

Plenty more, I'm sure.

[kurumi]

Connecticut has only a few, and all of these are partial:
- CT 10 at CT 322, Southington (constructed in 1930s)
- CT 10 at US 6, Farmington (also 1930s)
- CT 82 at CT 32, Norwich (mid 1980s)
- US 6 at CT 12, Killingly (constructed c. 1958, removed c. 1996)

[TheStranger]

Route 35 (Sloat Boulevard) and Sunset Boulevard in San Francisco is a half-cloverleaf (the north half being covered by equivalent short at-grade intersections) -

http://maps.google.com/maps?q=Yorba+%26+37th,+San+Francisco&hl=en&sll=37.0625,-95.677068&sspn=52.77044,79.453125&vpsrc=0&hnear=37th+Ave+%26+Yorba+St,+San+Francisco,+California+94116&t=h&z=17

At Sunset Boulevard's north end in Golden Gate Park, there's a half-diamond with Lincoln Way:
http://maps.google.com/maps?q=36th+%26+Lincoln,+San+Francisco&hl=en&sll=37.734811,-122.494463&sspn=0.006499,0.009699&vpsrc=0&hnear=Lincoln+Way+%26+36th+Ave,+San+Francisco,+California+94122&t=h&z=17

In Redwood City, Route 84 and Route 82 have a grade separation with ramps, though neither are expressways/freeways in the area:
http://maps.google.com/maps?q=Laurel+%26+El+Camino,+Redwood+City&hl=en&ll=37.476059,-122.221152&spn=0.006522,0.009699&sll=37.476306,-122.222117&sspn=0.006522,0.009699&vpsrc=0&hnear=El+Camino+Real+%26+Laurel+St,+Redwood+City,+San+Mateo,+California+94063&t=h&z=17

[froggie]

Also there is this one in the City of Alexandria.

These ramps weren't built for the old Cameron Station base.  What you're looking at here is the leftovers of the proposed Clermont Connector, which would've crossed Backlick Run and the railroad tracks to tie into Clermont Ave at Eisenhower.

-There are a few on Snelling Ave (MN 51) at County B2, Como Ave, Energy Park Dr, and Pierce Butler Route.

In the mid 60s, Snelling Ave was proposed to be upgraded to a freeway from I-94 north to I-694.  What you see here is what was built from that proposal.

-Not a full interchange, but grade-separated anyway: County 81 at Lowry Ave/Wirth Pkwy (http://g.co/maps/7n8fq)

Similar deal as with Cedar...this was from an even older freeway proposal, the "Northwest Diagonal", which would have roughly run along County 81 and tie into downtown at the cancelled I-335.

[1995hoo]

Also there is this one in the City of Alexandria.

These ramps weren't built for the old Cameron Station base.  What you're looking at here is the leftovers of the proposed Clermont Connector, which would've crossed Backlick Run and the railroad tracks to tie into Clermont Ave at Eisenhower.

....

Ah, thanks for that. I've always noted the peculiar end to Clermont right there and suspected that once upon a time an extension may have been proposed (just as I assume once upon a time it probably connected through where the bike trail opening in the soundwall now is–and I understand why residents there wouldn't want it restored). You know further down Eisenhower how Bluestone Road goes uphill and then ends? I always get this absurd mental image of Bo and Luke Duke using that road to jump the railroad tracks. From a selfish standpoint I kind of like the lack of connections to Eisenhower Avenue because I like to use that road as a shortcut (with relatively few red lights) to and from Old Town.

Either way, I suppose those ramps do ease access to the park, and I wouldn't much want to see another light thrown up right there, but they do seem unnecessary given that the road was never built. Tearing them down would probably cost more than just maintaining them, I guess (plus no doubt Cameron Station residents would oppose the demolition if it meant more traffic going through their neighborhood).

[MDOTFanFB]

Here's a few from Southeast Michigan:

U.S. 24/Telegraph Road at Ecorse Road (former M-17), Taylor, a parclo interchange: http://g.co/maps/22a68
U.S. 24/Telegraph Road at U.S. 12/Michigan Avenue, Dearborn, a squashed cloverleaf interchange: http://g.co/maps/4s8xy
U.S. 24/Telegraph Road at M-102/8 Mile Road, Detroit/Southfield city limit, another cloverleaf interchange: http://g.co/maps/m8679

And if you count those with at-grade intersections...

U.S. 24/Telegraph Road at M-5/Grand River Avenue, Detroit (the ramp is named Short Street oddly enough): http://g.co/maps/m9w2d
U.S. 24/Telegraph Road at Plymouth Road (former M-14), Redford Township: http://g.co/maps/vq7cj
U.S. 24/Telegraph Road at M-153/Ford Road, Dearborn/Dearborn Heights city limit: http://g.co/maps/n5qay

And there also used to be one on U.S. 24/Telegraph Road at Toledo Road (former U.S. 25) and West Road in Brownstown Township, but Toledo Road has now been realigned to end at a T intersection. Traces of the interchange can still be seen by the gaps between trees: http://g.co/maps/p2q4r

[Ned Weasel]

Here are a few more in Kansas, on conventional roads that appear unlikely to be upgraded to expressways or freeways:

US 40/Sixth Street, US 59/Iowa Street, and McDonald Drive in Lawrence:
http://maps.google.com/maps?q=Lawrence,+KS&hl=en&ll=38.973456,-95.260262&spn=0.004521,0.010568&sll=37.0625,-95.677068&sspn=37.683309,86.572266&vpsrc=6&hnear=Lawrence,+Douglas,+Kansas&t=k&z=17
(I still don't know what they were thinking when designing this one.)

US 56/Shawnee Mission Parkway/Hidden US 169 and Johnson Drive in Mission:
http://maps.google.com/maps?q=Mission,+KS&hl=en&ll=39.023943,-94.639235&spn=0.004518,0.010568&sll=39.027783,-94.655791&sspn=0.036139,0.084543&vpsrc=6&hnear=Mission,+Johnson,+Kansas&t=k&z=17
(This used to be a really interesting "pretzel" interchange, but Kansas tends to like to make things boring.)

US 50 and K-177 in Chase County:
http://maps.google.com/maps?q=Chase+County,+KS&hl=en&ll=38.400183,-96.55445&spn=0.004557,0.010568&sll=37.0625,-95.677068&sspn=37.683309,86.572266&vpsrc=6&hnear=Chase,+Kansas&t=k&z=17
(This might be be a grade-separated interchange because of the nearby railroad tracks.  However, this design really irks me.  Couldn't it have been a simple diamond or a diamond/partial cloverleaf?)

This one might not count:

Shawnee Mission Parkway and Merriam Drive in Merriam:
http://maps.google.com/maps?q=Overland+Park,+KS&hl=en&ll=39.015458,-94.696065&spn=0.004518,0.010568&sll=37.0625,-95.677068&sspn=37.683309,86.572266&vpsrc=6&hnear=Overland+Park,+Johnson,+Kansas&t=k&z=17
(One could argue that Shawnee Mission Parkway is an expressway west of I-35, although it has many at-grade intersections between this interchange and Lackman Road.  I think this is a gray area.)

This one doesn't count, since it involves a transition from conventional road to expressway (and later to freeway), but it shows context for the other two US 56/Shawnee Mission Parkway examples:

US 56/US 69/Shawnee Mission Parkway/Hidden US 169 and Metcalf Avenue in Overland Park:
http://maps.google.com/maps?q=Overland+Park,+KS&hl=en&ll=39.014991,-94.667902&spn=0.004518,0.010568&sll=37.0625,-95.677068&sspn=37.683309,86.572266&vpsrc=6&hnear=Overland+Park,+Johnson,+Kansas&t=k&z=17
(I think US 69/Metcalf Avenue is clearly an expressway north of US 56.)

[vtk]

Here are a few more in Kansas, on conventional roads that appear unlikely to be upgraded to expressways or freeways:

US 40/Sixth Street, US 59/Iowa Street, and McDonald Drive in Lawrence:
http://maps.google.com/maps?q=Lawrence,+KS&hl=en&ll=38.973456,-95.260262&spn=0.004521,0.010568&sll=37.0625,-95.677068&sspn=37.683309,86.572266&vpsrc=6&hnear=Lawrence,+Douglas,+Kansas&t=k&z=17
(I still don't know what they were thinking when designing this one.)

US 56/Shawnee Mission Parkway/Hidden US 169 and Johnson Drive in Mission:
http://maps.google.com/maps?q=Mission,+KS&hl=en&ll=39.023943,-94.639235&spn=0.004518,0.010568&sll=39.027783,-94.655791&sspn=0.036139,0.084543&vpsrc=6&hnear=Mission,+Johnson,+Kansas&t=k&z=17
(This used to be a really interesting "pretzel" interchange, but Kansas tends to like to make things boring.)

Shawnee Mission Parkway (from US 69 to the shopping center) and McDonald Drive both appear to be expressways, by my understanding and application of the term. 

[ftballfan]

M-153 (Ford Rd) and Hines Dr in Dearborn: http://g.co/maps/ez8r4

M-153 (Ford Rd) and Evergreen Rd in Dearborn: http://g.co/maps/nt72v

M-153 (Ford Rd) and Greenfield Rd in Dearborn: http://g.co/maps/s298t

Square Lake Rd and Opdyke Rd in Pontiac (this one may not count, as Square Lake Rd merges into I-75 east of here without going through an intersection): http://g.co/maps/k7u4k

US-24 (Telegraph Rd) and Orchard Lake Rd in Pontiac: http://g.co/maps/f3cj6

US-24 (Telegraph Rd) and Elizabeth Lake Rd in Pontiac (at-grade): http://g.co/maps/kv32t

US-12 (Michigan Ave) and Evergreen Rd in Dearborn (at-grade): http://g.co/maps/a9uwq

Eureka Rd and Dingell Dr in Romulus: http://g.co/maps/25b2w

US-12 and M-17 in Ypsilanti: http://g.co/maps/g6e8q

US-12 and Wiard Rd in Ypsilanti: http://g.co/maps/fwtcn

US-12 at Willow Run Airport entrance in Ypsilanti: http://g.co/maps/7qbwz

US-12 and Ecorse Rd in Ypsilanti: http://g.co/maps/rd37w

Wiard Rd and Airport Dr in Ypsilanti: http://g.co/maps/ye74y

Wiard Rd and Tyler Rd in Ypsilanti: http://g.co/maps/yzgdm

US-31 and BL I-196 (Chicago Dr) in Holland: http://g.co/maps/9cjta

US-31 and Lakewood Blvd in Holland: http://g.co/maps/hurdw

BUS US-31 (Seaway Dr) and Muskegon/Webster Aves in Muskegon: http://g.co/maps/x2g95

BUS US-31 (Moses Jones Pkwy) and Muskegon/Webster Aves in Muskegon: http://g.co/maps/wrnrq

BUS US-31 (Moses Jones Pkwy) and M-120 in Muskegon: http://g.co/maps/d6nfm

M-44 (East Beltline Ave) and Plainfield Ave in Grand Rapids: http://g.co/maps/c3q8n

[codyg1985]

Kentucky has a few. Coming immediately to mind is KY 321 (formerly US 23/US 460) and KY 1428 (which, ironically enough, was the first routing of US 23 in the area) south of Paintsville. 321 crosses 1428 and a two-lane connector route links the two.

http://g.co/maps/auv77

This one is close to there in Inez, KY. This is a typical intersection for KY 3 and KY 645 except there is a flyover to stay on KY 3 NB:

http://g.co/maps/wfnqj

[hbelkins]

Kentucky has a few. Coming immediately to mind is KY 321 (formerly US 23/US 460) and KY 1428 (which, ironically enough, was the first routing of US 23 in the area) south of Paintsville. 321 crosses 1428 and a two-lane connector route links the two.

http://g.co/maps/auv77

This one is close to there in Inez, KY. This is a typical intersection for KY 3 and KY 645 except there is a flyover to stay on KY 3 NB:

http://g.co/maps/wfnqj

I haven't been there since that was built. I never really understood the need for it, but I think it was done to keep traffic staying on KY 3 north from  pulling across four lanes of traffic, so I guess it was justified for safety reasons.

[florida]

FL 76 and FL 710 in Indiantown. The connector was the original routing for FL 710 before the high-rise bridge was built. http://g.co/maps/bqats

US 27 and FL 19 north of Clermont. SR 19 gets the easy way out on this one. http://g.co/maps/wyh3d

Of course, there's several within Disney World. http://g.co/maps/b59tr

US 17/92 and US 27 in Haines City http://g.co/maps/59vu5

US 27 and FL 60, plus FL 60 and 4th St (connecting to FL 17 and downtown) Lake Wales http://g.co/maps/22y5u

[1995hoo]

I probably should have listed this one before: Gallows Road and US-50 in Northern Virginia. When I was a kid this was a simple crossroads with a traffic light and a strip mall on the northeast corner (the other three sides were all thickly-treed areas). Later they built two separate right-turn lanes for traffic heading from northbound Gallows to the Beltway, but it was still a traffic problem and eventually they made it into a SPUI.

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. That used to be a conventional cloverleaf until Fairview Park Drive was constructed just east of there. Because of its proximity to the Beltway there's another interchange there, sort of a hybrid design, with the result being that the tangle of ramps looks a bit like something you'd see in New Jersey (I must admit it all works pretty well, though).

[wriddle082]

Tennessee has at least two that stick out in my mind along TN 100, which were most likely built in the 50's:

* TN 18 and TN 100 near Chickasaw State Park, which they will probably have to re-do the ramps on this one to give TN 18 the priority since it will be widened in the coming years.  TN 100 doesn't see a great deal of traffic here.  From this interchange, 18 runs north to Jackson, and south to Bolivar, Holly Springs, MS, and Oxford, MS (as MS 7).  Hence it's the best way for most Tennesseans to get to Ole Miss.  http://g.co/maps/56dn8

* TN 96 and TN 100 in Fairview.  Yes, TN 100 widens to four lanes through this one, but it's two lanes on either end so I believe it counts.  Actually they are planning to widen all of TN 100 through Fairview in the coming years as well.  http://g.co/maps/h6yms


*

[JREwing78]

Memorial Dr @ Parker Dr (US-51), Janesville, WI:
http://g.co/maps/em2ha

[Ned Weasel]

Shawnee Mission Parkway (from US 69 to the shopping center) and McDonald Drive both appear to be expressways, by my understanding and application of the term.  

Actually, you're right about US 56/Shawnee Mission Parkway.  I had forgotten that there are no undivided sections between US 69/Metcalf Avenue and Johnson Drive.  As for McDonald Drive, scroll north on that satellite image!

http://maps.google.com/maps?q=Lawrence,+KS&hl=en&ll=38.973456,-95.260262&spn=0.004521,0.010568&sll=37.0625,-95.677068&sspn=37.683309,86.572266&vpsrc=6&hnear=Lawrence,+Douglas,+Kansas&t=k&z=17

[NE2]

As for McDonald Drive, scroll north on that satellite image!

Expressways (and freeways) don't need to be divided.

[Brian556]

In Texas, there are two former interchanges that I can think of that have been removed due to decreased traffic volume.

1. Amarillo,  Business I-40 (former US 66) at US 60. Traffic dereased due to traffic moving from US 66 to I-40. (duh)

http://maps.google.com/maps?hl=en&ll=35.25191,-101.642804&spn=0.006387,0.009624&t=h&z=17&vpsrc=6

2. In Dallas, SH 310 (former US 75) at Illinois Ave (former SH 246). Old maps show that there was a direct connector from SH 310 NB to Illinois Ave.Traffic decreased due to US &% traffic moving to I-45. Also, SH 246 was removed from the state highway system in 1951

http://maps.google.com/maps?hl=en&ll=32.712705,-96.752944&spn=0.006581,0.009624&t=h&z=17&vpsrc=6


In Hillsboro TX. There is the OLD US 77/81 split. This interchange is no longer needed due to I-35/I-35E/I-35W.
.  Traffic is so light at this interchange that you can stand in the middle if the highway right before the split for a long time before you will see a car, even on saturday afternoon.

There are several interchanges between streets in Dallas.

[hbelkins]

Back to KY 3 and KY 645 at Inez -- the satellite view shows the flyover, but go to Street View and you can't even see any signs that the construction had even begun when the camera car went through there. It's been a few years, but at least they had started doing some work last time I was there.

[rte66man]

In OKC:
- Northwest Expy and May Av. Both are at-grade roadways except for the interchange.
- Lincoln Blvd and NE 23rd St. Around the State Capitol bldg

Others in OK:
- OK3 and US81 south of Okarche. Never understood this one.

The others that come to mind all involve "expressways" (defined as minor at-grade intersections with grade-separated interchanges at major junctions.

rte66man