One Movement Only - Does it Exist Anywhere Else?

[Michael]

Here's another one on US 15 (multiplexed with US 11 at this point) just south of Selinsgrove, PA.  The ramp, along with South Market Street was the old US 11/15 alignment.  South Market Street is two-way until the "reverse jughandle" (labeled as Sr2 9401) just before the ramp.

[empirestate]

Here's another one on US 15 (multiplexed with US 11 at this point) just south of Selinsgrove, PA.  The ramp, along with South Market Street was the old US 11/15 alignment.  South Market Street is two-way until the "reverse jughandle" (labeled as Sr2 9401) just before the ramp.

Sorry, beat you to it. :-) But thanks for the additional background info!

A similar transition from two-way to one-way at the entrance to the highway with that being the only movement is just short of the Connecticut line on I-84 WB, also discussed around here in the recent past in some other thread.  Of course, that road is an old alignment, not a cut-off crossroad, so maybe similar examples are more common.

Sure, you get that in Selinsgrove, PA: http://goo.gl/maps/lrx7G

[Michael]

Sorry, beat you to it. :-) But thanks for the additional background info!

Now I feel stupid.  I was going to read the posts on that page of the thread later, but I guess I should have done it when I read the first two pages.  Even worse is my PA 973 post, which had the same example in the post directly above it.  I just went back and edited it.

[COLORADOrk]

I-890 westbound onramp between exits 6 and 5 (Schenectady, NY)

[cpzilliacus]

In Arbutus, Baltimore County, Maryland, there is Exit 11A from the Outer Loop of I-695 (Baltimore Beltway) to southbound I-95. 

But that ramp also features a "one movement only" ramp that takes traffic to Sulphur Spring Road, even though  there is no return to I-695 (or I-95) at that point.  Google Maps here.

Return to I-695 (and then I-95) is via the interchange at Washington Boulevard (Exit 10, U.S. 1 Alt) in nearby Halethorpe. Google Maps here.  In a sense, that ramp to Sulphur Spring Road "completes" Exit 10, since there's no exit from the  Outer Loop of 695 to U.S. 1 Alt.

[jp the roadgeek]

I-84 Exit 24 Westbound (Harper's Ferry Rd) in Waterbury, CT is one.  There is an exit eastbound in the area, but that is Exit 25, and serves Reidville Dr.  There are talks that this exit will be eliminated in a (distant) future widening project,

[vdeane]

I-890 westbound onramp between exits 6 and 5 (Schenectady, NY)

IMO that's a gray area.  It's clearly a part of the exit 5 interchange westbound, though it serves an un-related movement.

[empirestate]

I-890 westbound onramp between exits 6 and 5 (Schenectady, NY)

Interesting sub-category: single-movement ramp that isn't the only ramp in its interchange!

Also, not fitting the sub-category, but the Colvin St. onramp to I-81 NB seems to qualify, as Exit 17 just to the south has all its movements covered by four ramps.

[JustDrive]

US 101 at Sanjon Road (Exit 69) in Ventura, CA.  There is no re-entry northbound and to get on 101 southbound you have to drive up to California Street to get back on.

[lordsutch]

Just south of Pearsall, TX, where I-35 crosses CR-4201, there is only a southbound entrance–no southbound exit, northbound entrance, or northbound exit.

That's actually an interesting one, because it's one of the rare sections of I-35 in Texas without a frontage road on one side (old US 81, now Spur 581, is east of the railroad tracks here).  And I don't think this situation - a single ramp only - is repeated anywhere on I-35 south of DFW.  I guess the presumption is anyone wanting to visit the small community here could exit at Pearsall or would be coming down Spur 581 from town; there's certainly no reason why TxDOT couldn't have built a SB offramp in the vicinity.

There's some similar stuff on the reconstructed section of I-35 north of Laredo (from Loop 20 north to the Uniroyal interchange) where whatever TxDOT ultimately has planned has meshed with what was already there to create a confusing mix of exits and entrances to the frontage roads with limited rhyme or reason – you have bits that look like ramp reversal designs, and bits that look like the old-style diamond + frontage road design, and bits that just make no sense whatsoever (my favorite is the random overpass that's not lined up with Killam Industrial Blvd, or anything else in the MPO plans as far as I can tell).

[TheStranger]

US 50 at Aerojet Road in Rancho Cordova, exit 22 (eastbound offramp only) -

http://maps.google.com/maps?q=Aerojet+Dr+%26+Folsom+Blvd,+Rancho+Cordova,+CA&hl=en&sll=38.631857,-121.208704&sspn=0.010577,0.018861&gl=us&hnear=Folsom+Blvd+%26+Aerojet+Dr,+Rancho+Cordova,+California+95742&t=m&z=16

Though access onto US 50 is provided by the nearby Hazel Avenue exit, this ramp sits alone by itself.

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US 101/Bayshore Freeway Exit 433A, Vermont Street (northbound offramp only), right after Hospital Curve in SF:

http://maps.google.com/maps?q=Vermont+and+Mariposa,+San+Francisco&hl=en&ll=37.763285,-122.404068&spn=0.005352,0.009431&sll=37.764678,-122.404522&sspn=0.010704,0.018861&gl=us&hnear=Vermont+St+%26+Mariposa+St,+San+Francisco,+California&t=m&z=17

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US 101/Bayshore Freeway Exit 417A (Dore Avenue) in San Mateo (northbound offramp only)

http://maps.google.com/maps?q=Dore+Avenue,+San+Mateo&hl=en&ll=37.577937,-122.32035&spn=0.003794,0.004715&sll=37.569668,-122.309289&sspn=0.010732,0.018861&t=h&gl=us&hnear=Dore+Ave,+San+Mateo,+California+94401&z=18

[deathtopumpkins]

Possibly the most unquestionable example I've found yet: I-95 southbound onramp from Dedham St in, I believe, Canton, MA. And, interestingly, you can't even access 95 from westbound Dedham St, only eastbound, as left turns are prohibited, plastic bollards were installer, and U-turns are prohibited at subsequent intersections.

[PHLBOS]

Possibly the most unquestionable example I've found yet: I-95 southbound onramp from Dedham St in, I believe, Canton, MA. And, interestingly, you can't even access 95 from westbound Dedham St, only eastbound, as left turns are prohibited, plastic bollards were installer, and U-turns are prohibited at subsequent intersections.

I already mentioned that one several posts back (Reply #39).

https://www.aaroads.com/forum/index.php?topic=8980.25

[deathtopumpkins]

Ah, I had missed it previously!

[agentsteel53]

damn, why are they so adamant about prohibiting the westbound Dedham St to southbound I-95 move?

[PHLBOS]

damn, why are they so adamant about prohibiting the westbound Dedham St to southbound I-95 move?

Guess on my part, but it would appear that the residences on the other/east side of I-95 did not want additional traffic running through their neighborhood as a means of getting to the ramp.  Note the adjacent factories just west of the on-ramp.  It's almost as if it was built with them in mind.

[JustDrive]

US 50 at Aerojet Road in Rancho Cordova, exit 22 (eastbound offramp only) -

http://maps.google.com/maps?q=Aerojet+Dr+%26+Folsom+Blvd,+Rancho+Cordova,+CA&hl=en&sll=38.631857,-121.208704&sspn=0.010577,0.018861&gl=us&hnear=Folsom+Blvd+%26+Aerojet+Dr,+Rancho+Cordova,+California+95742&t=m&z=16

Though access onto US 50 is provided by the nearby Hazel Avenue exit, this ramp sits alone by itself.

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US 101/Bayshore Freeway Exit 433A, Vermont Street (northbound offramp only), right after Hospital Curve in SF:

http://maps.google.com/maps?q=Vermont+and+Mariposa,+San+Francisco&hl=en&ll=37.763285,-122.404068&spn=0.005352,0.009431&sll=37.764678,-122.404522&sspn=0.010704,0.018861&gl=us&hnear=Vermont+St+%26+Mariposa+St,+San+Francisco,+California&t=m&z=17

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US 101/Bayshore Freeway Exit 417A (Dore Avenue) in San Mateo (northbound offramp only)

http://maps.google.com/maps?q=Dore+Avenue,+San+Mateo&hl=en&ll=37.577937,-122.32035&spn=0.003794,0.004715&sll=37.569668,-122.309289&sspn=0.010732,0.018861&t=h&gl=us&hnear=Dore+Ave,+San+Mateo,+California+94401&z=18

If memory serves, wasn't there a NB 101 onramp at Dore that was removed?  I remember going to a wedding in San Mateo about 15 years ago and we got lost in that area.

[hbelkins]

Speaking of NY 17 -- the ramp from old NY 17 westbound to the freeway at Parksville.

[vdeane]

And "exit 83" is essentially a collection of these - the ramps for each movement are randomly scattered about in odd places.

[hbelkins]

And to add to the collection, Exit 20A on eastbound I-64 in West Virginia. Originally, Exit 20 was a full interchange with four ramps (full movements) to Mall Road, the access for Huntington Mall. Sometime after the mall and its exit was built, West Mall Road was built, which runs between the mall and US 60 and crosses over I-64. Mall Road was renamed East Mall Road and still has all four ramps (diamond for WB traffic, a folded diamond for EB traffic) and the ramp from EB I-64 was renamed Exit 20B. Exit 20A is a ramp from EB 64 to West Mall Road and is the only movement between West Mall Road and the interstate.

[TheStranger]

If memory serves, wasn't there a NB 101 onramp at Dore that was removed?  I remember going to a wedding in San Mateo about 15 years ago and we got lost in that area.

Shockingly, no:

http://www.historicaerials.com/aerials.php?scale=8E-06&lat=37.578942939033&lon=-122.321176&year=1956

[kj3400]

On the Salisbury Bypass (US 13), there's a single offramp to Hobbs Rd:

http://goo.gl/maps/uX8fT

And near cpzilliacus' example is exit 12A which, while having an exit and entrance for Leeds Av, only has a single ramp for Southwestern Blvd (US 1):

http://goo.gl/maps/553Sp

[PHLBOS]

On the Salisbury Bypass (US 13), there's a single offramp to Hobbs Rd:

http://goo.gl/maps/uX8fT

Question regarding that interchange: what was the reasoning behind removing 2 of those cloverleaf ramps and replacing them w/left-turn, at-grade crossings w/no signals?  It increases the number of crossing conflicts.

[kj3400]

On the Salisbury Bypass (US 13), there's a single offramp to Hobbs Rd:

http://goo.gl/maps/uX8fT

And near cpzilliacus' example is exit 12A which, while having an exit and entrance for Leeds Av, only has a single ramp for Southwestern Blvd (US 1):

http://goo.gl/maps/553Sp

Question regarding that interchange: what was the reasoning behind removing 2 of those cloverleaf ramps and replacing them w/left-turn, at-grade crossings w/no signals?  It increases the number of crossing conflicts.

I haven't the slightest. But I suppose they didn't want weaving issues for US 50 eastbound traffic, as both those removed ramps would have caused problems for them.

[Mr_Northside]

Question regarding that interchange: what was the reasoning behind removing 2 of those cloverleaf ramps and replacing them w/left-turn, at-grade crossings w/no signals?  It increases the number of crossing conflicts.

I haven't the slightest[/u]. But I suppose they didn't want weaving issues for US 50 eastbound traffic, as both those removed ramps would have caused problems for them.

It was certainly to avoid weaving issues (So you had "the slightest")

Apparently when they re-did it, they didn't think signals were needed for those movements.  Kind of interesting, the US-50 W --> US-13 S left only has a "Yield" across the eastbound carriageway (and allows for a U-turn), while the left-turn to US-13 N / US-50 W has a STOP to cross the westbound carriageway.  I'd guess it has something to do with the density of trees in the median creating visibility issues and/or traffic volumes.