What are some examples where two different freeway entrance ramps could be used for the exact same movement? This could be freeway to freeway or surface street to freeway (but not express or HOV lane entrances paired with a regular entrance). If possible, also include some context as to why the setup exists.
Here are the first three that came to mind, inspiring this thread:
(1) NY 33 at I-490 (https://www.google.com/maps/@43.1483466,-77.7106985,1659m/data=!3m1!1e3?entry=ttu)
Cloverleaf interchange with a slight modification means there are two ramps that serve the NY 33 WB to NY 531 WB movement. The ramp that's part of the cloverleaf goes to NY 531, while the sole left turn in the interchange complex serves the NY 33 WB to I-490 EB movement... but in doing so also provides access to I-490's ramp to NY 531.
(2) NY 5 at I-90/I-290 (https://www.google.com/maps/@42.9588563,-78.7635603,1664m/data=!3m1!1e3?entry=ttu)
Also a modified cloverleaf, the most noticeable modifications are the loop in the southwest corner being folded over the freeway, and the northwest quadrant having straight-through movements for traffic to/from Kensington Ave. Look a bit closer at the southwest quadrant, and you'll also notice that the on-ramp from NY 5 EB joins I-290 after the split for I-90 traffic, meaning it's actually a direct ramp to I-90 WB. But because of the Kensington Ave modification, there's still an option for NY 5 EB traffic looking to get to I-90 EB. They must turn left and join the loop ramp to access I-290, then merge left to reach I-90 EB at the upcoming split... or use the loop as an alternative to I-90 WB.
(3) US 275 at I-80 (https://www.google.com/maps/@41.2166438,-96.085779,1710m/data=!3m1!1e3?entry=ttu)
On US 275 EB, the loop ramp is signed for I-680 North, while getting to I-80 East requires a left turn (or so you'd think). But both ramps end up on the same roadway, with a split for I-680 and I-80 traffic about 1/2 mile down the road. This was presumably done to reduce merging on that stretch, which makes sense but also creates an extra light for the left turn on US 275.
The Broadway Interchange (https://www.google.com/maps/@47.918725,-122.2116721,1452m/data=!3m1!1e3?entry=ttu) in Everett, WA has a few examples: EB SR 526 to NB I-5 can be done via a left-lane ramp with access just beyond Evergreen Way (which then crosses under SR 526 and flies over) or via a loop ramp on the east side. NB SR 99 to NB I-5 has a dedicated ramp or one could turn right onto SB SR 527 and take the aforementioned loop ramp. For both of these, the flyover ramps were added in later upgrades to the interchange; SR 526's was added in the 1990s to handle demand from Boeing's 777 program, while SR 99's was there once a few bridges were moved around in the 1960s or 1970s.
Down in Seattle, I-5 at Northgate Way (https://www.google.com/maps/@47.7084471,-122.3293477,729m/data=!3m1!1e3?entry=ttu) has two ways for traffic on 1st Avenue Northeast to enter I-5 NB: either the southern onramp from the mall or the ramp from the five-way intersection at Northgate Way itself.
I-75 SB to I-285 EB, NW Altanta. There is a newer multi-lane flyover ramp and an older loop ramp that both access it. The reason the older loop ramp still exists is that traffic entering I-75 from Windy Hill Rd doesn't have access to the newer flyover ramp.
I can't help but think that we've had this thread before ... But I'll contribute instead of being pedantic :)
Here are two cases near me:
1) Near Ellicott City MD - northbound US 29 to westbound I-70. There is a loop ramp in the NE quadrant, although you can also turn left off US 29 and get onto the ramp that serves southbound US 29. Personally, I prefer the latter since it's easier to get up to speed for merging onto I-70.
2) South of Baltimore - northbound I-97 to westbound I-695. You normally would take an exit to the right onto a flyover, making a left hand merge onto I-695. Later a second loop ramp was added after crossing I-695. This was helpful for traffic that wanted to immediately exit onto MD 648 northbound, which was not possible from the flyover.
For several years, at the end of EB Bus I-196 (Holland/Zeeland area), there were duplicate ramps to EB I-196. There was the signed cloverleaf ramp which was the intended ramp. But the ramp from the opposite direction could also be used. Since WB Byron Rd didn't have much traffic, you could often save a little time by making the left turn.
Later a "NO LEFT TURN" sign was put up, and the current configuration has a median island that doesn't allow the turn.
https://www.google.com/maps/@42.8117226,-85.9803764,311m/data=!3m1!1e3?authuser=0&entry=ttu
OH-334 west to US-68 south in Springfield. There is a cloverleaf and a left turn to the onramp within 50 feet of each other. Although presumably only eastbound traffic is supposed to use the onramp, road markings indicate the left turn from westbound was intended.
https://maps.app.goo.gl/hwYkE7eWUFuJdSph6
I-64 EB at I-264 EB in Norfolk, VA. The primary exit is a ramp for both directions of 264 that splits, but if you continue straight on 64 you can take the Newtown Rd loop ramp and access 264 EB if you're able to get over into the far left lane in time.
Golden Valley, MN: I-394 at TH 100. Going from eastbound 394 to southbound 100 you are offered a ramp split for 100 and an exit for Westside Drive. If you follow the Westside fork toward that exit you become another ramp that also offers a ramp to southbound 100 as well as the Westside exit. It's useful at rush hour as taking the Westside fork ramp is often less congested than the intended 394 EB-100 SB ramp.
Some examples in the Cincinnati area:
- I-275 SB to OH 32 EB (https://www.google.com/maps/@39.1026723,-84.2809123,15.81z?entry=ttu). It's signed for traffic going to OH 32 EB to use the flyover, and traffic to Eastgate to use the signal, though you can turn left at the signal and stay on OH 32 if you want.
- I-71 NB to Mason-Montgomery Rd NB and Mason-Montgomery Rd SB to I-71 SB (https://www.google.com/maps/@39.293312,-84.3167253,16.42z?entry=ttu). Both of these ramps are fairly new, and are meant for traffic in both movements to bypass 2 sets signals, but you can choose to go the "old way" if you want.
Former one: I-71 NB to Ridge Ave NB (https://www.google.com/maps/@39.1659583,-84.4233399,829m/data=!3m1!1e3?entry=ttu). Drivers could make a left turn on the Ridge SB ramp to go to Ridge NB. The separate Ridge NB ramp was removed a couple of years ago in preparation for a new ramp to Kenney Ave.
The one Los Angeles example that I always think of: the San Bernardino Split just east of downtown, where US 101 intersects I-10 (former US 60/70/99).
https://www.google.com/maps/place/Boyle+Heights,+Los+Angeles,+CA/@34.0529157,-118.2257495,15z/data=!4m6!3m5!1s0x80c2c6029c9a59e9:0xec9ea70c76393a94!8m2!3d34.0297895!4d-118.2117257!16zL20vMDIzN204?entry=ttu
Since this was built about 10-11 years before work started on the East Los Angeles Interchange, the fully built out version of this junction involved ramps from US 101 north to I-10 east (at the time US 60/70 east and US 99 south) and what is now I-10 west to US 101 south. When the Santa Monica and Golden State Freeways were built by the early 1960s, these movements were made redundant by the new ramp complex a mile to the east, connecting I-5 north to I-10 east and I-10 west to I-5 south.
From about 1962 to 1995, both sets of ramps existed in full. The flyover from I-10 west to US 101 south (which now eventually feeds into I-5 south, as 5 took over the 101 designation for the Santa Ana Freeway past East LA) was closed and removed in 1995 but the simple right hand ramp from 101 north to I-10 east remains to this day.
One near me, also in Maryland. (and after typing this, yes we did discuss this relatively recently, I've only been on here a couple months and it was one of my first posts)
Going east on Shady Grove Road where it interchanges with what is now the "Shady Grove Metro Station Access Road" (formerly I-370).
To access eastbound MD 200 (ICC), you could (1) get into the left lane, and wait at a protected left turn for a dedicated ramp to MD 200 east, or (2) stay to the right, take a cloverleaf to "I-370 westbound" and when you get through the cloverleaf, stay to the far right for a ramp to MD 200 east.
I usually do option (2) because it means I don't have to wait at the left turn light for option (1) which can be time consuming.
If you are going westbound on Shady Grove Road, you can turn right onto the ramp for option (1), or turn left onto the cloverleaf for option (2). In this case option (1) would be better (same reason, don't need to wait for left turn light).
In that same area, if going east on I-370, you have two options for getting to Shady Grove Road. One is a ramp directly from I-370 and one is a ramp from what is now the"Shady Grove Metro Access Road" (formerly I-370).
The Shady Grove Road/"Shady Grove Metro Access Road" (then I-370) interchange was built in late 1980s. The ICC and any ramps associated with it did not come along until about 20 years later. So there was a time gap, which happens a lot in these cases. On top of that, it was mentioned to me during the earlier go-around that this entire interchange redesign was changed from its original concept, which might account for some of the duplication.
I-87 both directions at exits 3/4 (https://www.google.com/maps/@42.7285679,-73.7983409,15.39z?entry=ttu) for Albany-Shaker Road. Exit 3 goes to Albany-Shaker Road. Exit 4 goes to Wolf Road or Old Wolf Road depending on the direction, both of which intersect Albany-Shaker almost immediately. All possible movements can be made from both exits (in fact, until 2019, exit 4 was the only way to make these movements). This results in two extra lights when traversing the interchange north-south on local streets (and more time spent sitting at a red on a third, no doubt). The original plans called for exit 4 NB to become a right turn only ramp, and exit 4 SB to be eliminated entirely, but both ended up being retained in full. As a result, exit 3 is underutilized, and the whole interchange area takes longer to traverse on local streets than it needs to (especially when heading north of Wolf Road, as the extra light for exit 4 often results in waiting a whole extra light cycle as the Albany-Shaker light, as the two are rarely green at the same time). This is extremely frustrating when there is a problem on the Northway and I want to bypass it (especially as the light between Old Wolf and Albany-Shaker tends to back up all the way to the Wolf/Albany-Shaker/I-87 north light).
I'm surprised webny99 didn't mention I-590 at NY 31 (https://www.google.com/maps/@43.1171831,-77.5505353,15.7z?entry=ttu). Not only can exit 2A from I-590 SB be used for both directions of NY 31, but NY 31 WB now has two ramps for I-590 SB (used to be just the loop ramp on the right; the traffic light to allow it access to the ramp from the other direction is recent).
I-890 exits 9A and 9B (https://www.google.com/maps/@42.759237,-73.9322607,15.7z?entry=ttu) probably fit, too; it's possible to get to both NY 7 and NY 146 from both (and, indeed, one has to when using the other direction of I-890).
Quote from: dlsterner on November 18, 2023, 02:18:09 AM
I can't help but think that we've had this thread before
Same.
Quote from: vdeane on November 18, 2023, 04:27:22 PM
I'm surprised webny99 didn't mention I-590 at NY 31 (https://www.google.com/maps/@43.1171831,-77.5505353,15.7z?entry=ttu). Not only can exit 2A from I-590 SB be used for both directions of NY 31, but NY 31 WB now has two ramps for I-590 SB (used to be just the loop ramp on the right; the traffic light to allow it access to the ramp from the other direction is recent).
I was initially thinking about just entrance ramps, but I did forget about that new left turn. That makes three ways to enter I-590 SB, but only one way to enter I-590 NB, which is annoying, especially considering how much busier the latter movement is. I would have much rather seen the added left turn movement at NY 31 WB to I-590 NB instead (in fact, it's so egregious that I'm now wondering if it was somehow a mix-up on NYSDOT's part!?). And yet... that merge onto I-590 NB somehow
still gets congested even with all entering traffic being channeled onto the single ramp from NY 31 EB.
Quote from: vdeane on November 18, 2023, 04:27:22 PM
Quote from: dlsterner on November 18, 2023, 02:18:09 AM
I can't help but think that we've had this thread before
Same.
Here (https://www.aaroads.com/forum/index.php?topic=33365.msg2847245#msg2847245) is pretty recent one I missed before, but was for interchanges, not just ramps. Still, close enough that I'd be OK with a merge. And
here (https://www.aaroads.com/forum/index.php?topic=30920.msg2701247#msg2701247) is an older variant that's closer to a true duplicate.
DE 1 north to I-95 north is an interesting case. There's the flyover ramp from the left and a conventional ramp later on the right. Moreover, the flyover ramp divides, with one merging on the left and the other merging into the ramp on the right. So there are three ways to take the DE 1 N to I-95 N movement.
I forgot about one local to me where there are three ramps available. I-95 southbound where is merges onto the Washington Beltway.
First is the flyover ramp that exits off the left side, making a left hand merge onto the Beltway. I think this is the newest of the three.
Second is the standard loop ramp in the SW corner.
Third is continuing south and making a U-turn at the weigh station & Park and Ride, and getting on a collector/distributer lane that merges into the Beltway, although not until past the US 1 interchange. The weigh station is at the "stub" where I-95 was originally going to go through the city.
https://maps.app.goo.gl/r952TXsjWV7gBsFW8 (https://maps.app.goo.gl/r952TXsjWV7gBsFW8)
I-10 EB to I-95 NB in Jacksonville. Either ramp can be used at the end of I-10.
Northbound US 119 to eastbound I-64 just prior to the Kanawha River crossing in Charleston, WV. There's a flyover that exits to the right as well as a left turn. Both merge on the ramp.
https://maps.app.goo.gl/6FEYPRq5qV94RGYw6
I still wish this forum had the ability to embed maps instead of having to post links to them. Like the below...
<iframe src="https://www.google.com/maps/embed?pb=!1m14!1m12!1m3!1d3129.022178677964!2d-81.64999062830269!3d38.34846871018479!2m3!1f0!2f0!3f0!3m2!1i1024!2i768!4f13.1!5e0!3m2!1sen!2sus!4v1700494721104!5m2!1sen!2sus" width="600" height="450" style="border:0;" allowfullscreen="" loading="lazy" referrerpolicy="no-referrer-when-downgrade"></iframe>
US 29 at I-70 West. Has a left and aright ramp going NB to WB.
Its been talked about several times.
Quote from: wriddle082 on November 18, 2023, 09:32:10 AM
I-64 EB at I-264 EB in Norfolk, VA. The primary exit is a ramp for both directions of 264 that splits, but if you continue straight on 64 you can take the Newtown Rd loop ramp and access 264 EB if you're able to get over into the far left lane in time.
The Newtown Road loop was the sole ramp as that exchange was originally a simple cloverleaf.
Two examples around Columbus, OH
The ramp from the I-270 outer loop to I-670 WB splits in the middle. Both ramps lead to the same highway, same direction. But one ramp puts you on the left lane of I-670 (the original configuration, when the highway was only known as US-62 and was much shorter), and the other leads to the right lanes. The latter ramp is signed for the airport, since there is an exit for the airport access road or "International Gateway" about a half-mile away on the right.
Another example may be found on I-70 WB at SR-315 NB. Here, a right exit puts you on 315's right lane, and a left exit puts you on the left. The right exit is only signed for Rich St. and Town St. (US-62/SR-3) a right exit that comes almost immediately. Note that the I-70/SR-315 interchange, which also connects I-71 to the south, is undergoing major reconstruction at this time. As such, I'm not sure if this exit ramp configuration will remain.
Northbound 395 in Arlington VA to South Hayes Street. Three straight exits. First one (exit 8A) takes you to South Hayes (and Washington Blvd westerly). Second (Exit 8B) takes you to Washington Blvd (northerly). Third (Exit 8C) takes you to South Hayes.
Two examples in my area:
There are two on-ramps from Ottawa near Homer Watson to Highway 7/8 EB (Sat. view (https://www.google.ca/maps/@43.4273916,-80.4822342,710m/data=!3m1!1e3?entry=ttu)). With the two roundabouts in this area, you can use either ramp.
Authorized vehicles have two options to exit from Highway 8 WB to Maple Grove EB. (Sat. view (https://www.google.ca/maps/@43.4112134,-80.3910987,382m/data=!3m1!1e3?entry=ttu))
1) The standard exit ramp signed "Maple Grove Road EAST" (GSV (https://www.google.ca/maps/@43.4085655,-80.3864794,3a,42y,319.45h,88.82t/data=!3m6!1e1!3m4!1sAeGMimmg4hoAwT9peRtGOA!2e0!7i16384!8i8192?entry=ttu))
2) Take the exit for "Sportsworld Drive WEST", then use the left turn lane designated for "authorized vehicles" (GSV (https://www.google.ca/maps/@43.4085655,-80.3864794,3a,42y,319.45h,88.82t/data=!3m6!1e1!3m4!1sAeGMimmg4hoAwT9peRtGOA!2e0!7i16384!8i8192?entry=ttu))
Westbound I-84 can be done by taking southbound I-205 and then exiting at the next exit, or by staying in the 84 mainline.
Camarillo, CA - Carmen Dr to US-101 South. There's an entry ramp off Carmen and an entry ramp off Ventura Blvd just west of the In-N-Out. If you make a mistake of turning left onto Carmen from Ventura and meant to get on the freeway, you have a second chance:
https://www.google.com/maps/@34.2171279,-119.0512296,1074m/data=!3m1!1e3?entry=ttu
Ventura, CA - Victoria Ave to US-101 South. Entry ramp off Valentine Rd (serving southbound Victoria Ave traffic) and entry ramp off Victoria Ave (serving northbound Victoria Ave traffic). There's a median separating NB/SB traffic at the Victoria ramp, and there is typically a lot of traffic on this street, so I assume that's why there are two entries.
https://www.google.com/maps/@34.2516827,-119.2123562,1082m/data=!3m1!1e3?entry=ttu
Quote from: Rothman on November 19, 2023, 07:20:10 PM
I-10 EB to I-95 NB in Jacksonville. Either ramp can be used at the end of I-10.
True, but the outermost ramp includes ramps to other local roads.
And really, those exits should be renumbered for I-10.
I-405 NB to SR 520 EB in Bellevue. The ramp splits (https://maps.app.goo.gl/MXLHHTfuXAX56e3v6), with the left fork signed for "124th Ave NE." That actually joins SR 520, in the right lane, just before that right lane becomes an exit for 124th Ave NE. Then, the right fork - which was signed for "SR 520 East" - joins 520, also in the right lane.
Quote from: RZF on November 20, 2023, 08:04:33 PM
Camarillo, CA - Carmen Dr to US-101 South. There's an entry ramp off Carmen and an entry ramp off Ventura Blvd just west of the In-N-Out. If you make a mistake of turning left onto Carmen from Ventura and meant to get on the freeway, you have a second chance:
https://www.google.com/maps/@34.2171279,-11
9.0512296,1074m/data=!3m1!1e3?entry=ttu
Ventura, CA - Victoria Ave to US-101 South. Entry ramp off Valentine Rd (serving southbound Victoria Ave traffic) and entry ramp off Victoria Ave (serving northbound Victoria Ave traffic). There's a median separating NB/SB traffic at the Victoria ramp, and there is typically a lot of traffic on this street, so I assume that's why there are two entries.
https://www.google.com/maps/@34.2516827,-119.2123562,1082m/data=!3m1!1e3?entry=ttu
The US-101/Seaward Ave interchange in Ventura is set up very similarly to the Carmen Dr. one -- if you're on Harbor Blvd (which parallels the freeway), you can turn directly into one onramp, or turn onto Seaward and then onto another onramp.
https://maps.app.goo.gl/GWtUEmUbTHzjwX577
Southern end of Ontario 416 at ON-401. (https://www.google.com/maps/@44.7534667,-75.4963924,15.08z?entry=ttu) My sat-nav sent me around the longer route shown on the map via ON-16 and I followed it just to see if I could discern any reason why it sent me that way (I could not).
I-95 S/B in Newton MA at MA 16. There are directional east/west A/B ramps, but you can go east or west from both. The reason being is that both ramps merge into roadways that bring you to a full intersection, so you can make both maneuvers but it is certainly optimized to follow the signed directional ramp since you can use a small slip ramp that is subject to a yield sign and not the traffic signal.
Map of area, https://maps.app.goo.gl/axt2WtzbwhKcJfRWA
GSV of intersection, https://maps.app.goo.gl/q84qcKLbXfBwXyQi9
Quote from: hbelkins on November 20, 2023, 10:40:19 AM
Northbound US 119 to eastbound I-64 just prior to the Kanawha River crossing in Charleston, WV. There's a flyover that exits to the right as well as a left turn. Both merge on the ramp.
https://maps.app.goo.gl/6FEYPRq5qV94RGYw6
My mind originally thought of the two US-119 onramps to I-64 westbound on the other side of the Fort Hill Bridge, but they didn't seem to qualify. After second thought (and many other posts), I'm adding this to the list. Of course, the main reason for two separate exits is to connect the two major one-way pairs (Virginia Street/Randolph Street and US-60 Lee Street/Washington Street). [Note that Quarrier Street in Downtown becomes Randolph Street on the West Side].
Similarly, there are two corresponding [northbound] offramps here, but only one of them is actually signed for US-119 (Exit 58B). Pennsylvania Avenue northbound is posted as US-119 north of Exit 58B, but locals headed for US-119 northbound (which Bigley Avenue, a short bypass of "Penna") actually take Exit 58C to avoid the extra traffic signals at Virginia and Randolph.
Quote from: 1995hoo on November 22, 2023, 08:43:47 AM
Southern end of Ontario 416 at ON-401. (https://www.google.com/maps/@44.7534667,-75.4963924,15.08z?entry=ttu) My sat-nav sent me around the longer route shown on the map via ON-16 and I followed it just to see if I could discern any reason why it sent me that way (I could not).
I would have thought sticking to ON 416 would have given you a greater likelihood of finding out why the GPS disliked that route (accident, constrution, etc).
Quote from: webny99 on November 22, 2023, 10:33:51 AM
Quote from: 1995hoo on November 22, 2023, 08:43:47 AM
Southern end of Ontario 416 at ON-401. (https://www.google.com/maps/@44.7534667,-75.4963924,15.08z?entry=ttu) My sat-nav sent me around the longer route shown on the map via ON-16 and I followed it just to see if I could discern any reason why it sent me that way (I could not).
I would have thought sticking to ON 416 would have given you a greater likelihood of finding out why the GPS disliked that route (accident, constrution, etc).
Mine would not have been able to account for accident, construction, etc., because that feature didn't exist at the time. (Actually, it still can't account for that stuff, as I still drive the same car and Acura stopped offering software updates for the navigation system. They'd rather I buy a new car.)
MS302 eastbound used to have two options to go northbound on I-55/I-69, but it looks like updates in 2018-2019 have since eliminated one option.
2014 Streetview: https://www.google.com/maps/@34.9624917,-89.9985923,3a,49.4y,85.45h,84.42t/data=!3m7!1e1!3m5!1slv3Fzugfk8W0rfSn1Zbs9A!2e0!5s20140501T000000!7i13312!8i6656?entry=ttu
2022 Streetview:
https://www.google.com/maps/@34.9624408,-89.9985692,3a,75y,85.45h,84.42t/data=!3m7!1e1!3m5!1sursEx_TRPtBL4IrYCKtkRg!2e0!5s20220601T000000!7i16384!8i8192?entry=ttu
Also in the Memphis area, traffic going westbound on US78 has two signed options to go westbound on I-240 at the eastern interchange:
https://www.google.com/maps/@35.0813718,-89.9568011,1240m/data=!3m1!1e3?entry=ttu
There are two options for traffic on eastbound US78 to access I-240 in either direction at that interchange, but only one set of those options is signed.
A couple in the Hartford, CT area
I-84 West to I-384 East: Direct is Exit 59. Can also be accessed from the Exit 62-60 c/d road.
US 5/CT 15 South to I-91 South: Direct is exit 86, but it can also be accessed from the Exit 87 (Airport Rd/Brainard Rd) offramp.
And then there's the whole NY 120A duplication at the CT/NY state line where the Hutch becomes the Merritt. Each DOT built an exit ramp to its side of the border. Before NYSDOT renumbered the exits on the HRP, the exits used to jump from 30 back to 27 when crossing the border; now they jump from 19 to 27.
Little Rock has a couple at one interchange. At the I-430/I-630 interchange in West Little Rock, a full cloverleaf interchange had flyover ramps added for several of the movements, but they kept the cloverleaf ramps as well, mostly for access to and from local roads immediately adjacent to the interchange. But there's no barrier preventing a motorist from skipping the flyover and using the cloverleaf to change freeways if they wish.
Quote from: GaryA on November 21, 2023, 08:32:19 PM
Quote from: RZF on November 20, 2023, 08:04:33 PM
Camarillo, CA - Carmen Dr to US-101 South. There's an entry ramp off Carmen and an entry ramp off Ventura Blvd just west of the In-N-Out. If you make a mistake of turning left onto Carmen from Ventura and meant to get on the freeway, you have a second chance:
https://www.google.com/maps/@34.2171279,-11
9.0512296,1074m/data=!3m1!1e3?entry=ttu
Ventura, CA - Victoria Ave to US-101 South. Entry ramp off Valentine Rd (serving southbound Victoria Ave traffic) and entry ramp off Victoria Ave (serving northbound Victoria Ave traffic). There's a median separating NB/SB traffic at the Victoria ramp, and there is typically a lot of traffic on this street, so I assume that's why there are two entries.
https://www.google.com/maps/@34.2516827,-119.2123562,1082m/data=!3m1!1e3?entry=ttu
The US-101/Seaward Ave interchange in Ventura is set up very similarly to the Carmen Dr. one -- if you're on Harbor Blvd (which parallels the freeway), you can turn directly into one onramp, or turn onto Seaward and then onto another onramp.
https://maps.app.goo.gl/GWtUEmUbTHzjwX577
The Chapman Avenue eastbound exit off the 55 Freeway in Orange sort of has duplicate ramps. When they widened the freeway about three decades ago, they added a bypass exit ramp south of the 22 to 55 north ramp to allow cars exiting to Chapman Avenue east to avoid traffic transitioning from the 22 Freeway by going to the right of the transition ramp. However, there are no barriers to prevent you from skipping the bypass exit and moving over from the mainline to exit at Chapman once you pass the 22 transition ramp.
A few years ago they installed a similar setup for 91 westbound traffic at the 55 exiting to Tustin Avenue. There's a bypass exit before the transition ramp from the 55 north to the 91 west, but you can also wait until after the transition ramp merges onto the 91 to move over and exit at Tustin.
I-295 North in New Jersey has two consecutive exits to I-76 (26 and 27). This dates back to before the ongoing construction of the I-295/I-76/NJ 42 interchange, when I-76 had express and local lanes, and there will only be one exit once construction is done. US 22 West has two exits to I-287 North, one direct and one via US 202/206. Likewise, I-287 South has a direct exit to US 22 East, and one via US 202/206. The reason, I would assume, is to give better access to businesses on US 22 to traffic on I-287
Quote from: bzakharin on November 24, 2023, 04:01:17 PM
I-295 North in New Jersey has two consecutive exits to I-76 (26 and 27). This dates back to before the ongoing construction of the I-295/I-76/NJ 42 interchange, when I-76 had express and local lanes, and there will only be one exit once construction is done. US 22 West has two exits to I-287 North, one direct and one via US 202/206. Likewise, I-287 South has a direct exit to US 22 East, and one via US 202/206. The reason, I would assume, is to give better access to businesses on US 22 to traffic on I-287
Originally the two ramps had purpose. There used to be an express/ local set up on I-76. So one was the express and the other was to the local.
In Newark, US 1 & 9 SB have two consecutive exits for I-78 EB. Don't know why, but it does help those patrons of the Couryard by Marriot as the hotel is between the two exits as they can access I-78 EB without having to double back. However I don't think NJDOT had the hotel guests in mind when creating those ramps.
Quote from: roadman65 on November 24, 2023, 04:12:05 PM
Quote from: bzakharin on November 24, 2023, 04:01:17 PM
I-295 North in New Jersey has two consecutive exits to I-76 (26 and 27). This dates back to before the ongoing construction of the I-295/I-76/NJ 42 interchange, when I-76 had express and local lanes, and there will only be one exit once construction is done. US 22 West has two exits to I-287 North, one direct and one via US 202/206. Likewise, I-287 South has a direct exit to US 22 East, and one via US 202/206. The reason, I would assume, is to give better access to businesses on US 22 to traffic on I-287
Originally the two ramps had purpose. There used to be an express/ local set up on I-76. So one was the express and the other was to the local.
It's right there in my comment
Another example in NJ is where the Atlantic City Expressway Westbound terminates at NJ 42. Right before the merge, which is from the left, there is an exit which merges onto NJ 42 from the right, whose only purpose is to allow access from the Atlantic City Expressway to Exit 7 on NJ 42 without weaving.
Quote from: bzakharin on November 24, 2023, 04:25:20 PM
Quote from: roadman65 on November 24, 2023, 04:12:05 PM
Quote from: bzakharin on November 24, 2023, 04:01:17 PM
I-295 North in New Jersey has two consecutive exits to I-76 (26 and 27). This dates back to before the ongoing construction of the I-295/I-76/NJ 42 interchange, when I-76 had express and local lanes, and there will only be one exit once construction is done. US 22 West has two exits to I-287 North, one direct and one via US 202/206. Likewise, I-287 South has a direct exit to US 22 East, and one via US 202/206. The reason, I would assume, is to give better access to businesses on US 22 to traffic on I-287
Originally the two ramps had purpose. There used to be an express/ local set up on I-76. So one was the express and the other was to the local.
It's right there in my comment
Yep, he does that sort of thing.
I-696 (east) at I-94 (west) There is a movement from EB I-696 to WB I-94 via the 11 Mile road exit from I-696. From the ramp from I-696, you follow 11 Mile road 1/4 mile to the WB I-94 onramp from 11 Mile road https://www.google.com/maps/search/11+mile+and+i+94+roseville+Mi/@42.4946618,-82.9253376,16.13z?entry=ttu
US 340 has two ways to continue on US 15 North at its northern end in Frederick. You can take the right-hand loop ramp or the left at the traffic light.
Not sure if this counts but I often do it and have seen others do it. While on South I-83/East US 322 in Harrisburg, approaching the Eisenhower, you can use US 322 to the exit for Paxton St to merge back onto 83 South without having to stop. This eliminates the left hand merge with I-283's ramp and then US 322 West's ramp.
Quote from: sbeaver44 on December 02, 2023, 08:09:21 PM
Not sure if this counts but I often do it and have seen others do it. While on South I-83/East US 322 in Harrisburg, approaching the Eisenhower, you can use US 322 to the exit for Paxton St to merge back onto 83 South without having to stop. This eliminates the left hand merge with I-283's ramp and then US 322 West's ramp.
I would certainly say it fits in spirit, but it's pretty much two different interchanges so it's interesting that it can be done southbound but not northbound.
Quote from: MikeTheActuary on November 22, 2023, 10:59:35 AM
MS302 eastbound used to have two options to go northbound on I-55/I-69, but it looks like updates in 2018-2019 have since eliminated one option.
2014 Streetview: https://www.google.com/maps/@34.9624917,-89.9985923,3a,49.4y,85.45h,84.42t/data=!3m7!1e1!3m5!1slv3Fzugfk8W0rfSn1Zbs9A!2e0!5s20140501T000000!7i13312!8i6656?entry=ttu
2022 Streetview:
https://www.google.com/maps/@34.9624408,-89.9985692,3a,75y,85.45h,84.42t/data=!3m7!1e1!3m5!1sursEx_TRPtBL4IrYCKtkRg!2e0!5s20220601T000000!7i16384!8i8192?entry=ttu
You used to also be able to do the same thing from WB MS 302 to SB I-55/69. It appears MS 302/Goodman Road got a much-needed third through lane in each direction to eliminate those turn options.
The C/D road setup and parallel roadways for I-85 and I-285 in southwest Fulton County give you at least two options for several movements, although only one is signed. For example, you can get on I-85 north from I-285 south either via the signed flyover ramp or via the ramp signed for GA 279/Old National Highway, which puts you on a C/D road that will give you access to I-85 north. You can also use the same C/D road to get from I-85 north to I-285 east, rather than using the direct ramp. You can do similar things westbound from I-285 or southbound from I-85.
599 south to south I-5 (https://www.google.com/maps/@47.48242,-122.2705167,16z?entry=ttu). Two ramps are provided, a normal right entrance and a left entrance to better access the left I-405 ramp.
Quote from: Evan_Th on November 21, 2023, 04:44:41 PM
I-405 NB to SR 520 EB in Bellevue. The ramp splits (https://maps.app.goo.gl/MXLHHTfuXAX56e3v6), with the left fork signed for "124th Ave NE." That actually joins SR 520, in the right lane, just before that right lane becomes an exit for 124th Ave NE. Then, the right fork - which was signed for "SR 520 East" - joins 520, also in the right lane.
Google recommends joining 520 immediately, though it would be better to take advantage of the expensive new capacity provided by the state.
Quote from: sbeaver44 on December 02, 2023, 08:09:21 PM
US 340 has two ways to continue on US 15 North at its northern end in Frederick. You can take the right-hand loop ramp or the left at the traffic light.
This reminds me of one of my most bizarre driving moments, when I realized that the two through lanes at the east end of US-340 were backed up heading into Frederick on Jefferson Street. When there was a gap in traffic in the left through lane, I was able to sneak over to the left turn lane to catch US-15 during the traffic signal cycle. When somebody tried to follow me, they had to wait for another gap and got caught at the traffic light.
Referred to in another thread, I-10 WB has a duplicate ramp to I-20:
Quote from: webny99 on December 18, 2023, 09:48:05 PM
Quote from: GaryA on December 17, 2023, 11:34:18 PM
It's in Texas, but not a normal "Texas U-Turn" -- traffic on I-20 that wants to go EB on I-10 must merge into the I-10 WB mainline and take a left exit that U-turns onto I-10 EB before the I-20 split. (Traffic from I-10 WB to I-20 could also follow this path, but they do have a direct ramp.) https://maps.app.goo.gl/w7waAcSzSYJb2YJt6
What's interesting here is that they installed a separate ramp for I-10 WB to I-20 EB when that movement could also be made from the U-turn ramp ...