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Old March 9th, 2017, 03:45 AM   #3701
Kanadzie
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There were several such interchanges in Quebec during the initial "tolled autoroute" phase (ended circa 1986 with toll abolishment, but tolls have re-appeared on new bridges lately)

The "Autoroute de la Rive-Nord" (A-40) between Montreal and Quebec City had two, one at A-640 (the right-turn ramps were added after the tolls were removed due to high traffic volume) and another at A-31 (still in this configuration)

There are some on the A-10 (Eastern Townships Autoroute) as well
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Old March 12th, 2017, 02:11 PM   #3702
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Quote:
Originally Posted by ChrisZwolle View Post
Kentucky built many tolled parkways back in the day. I guess it's possible for other states to have (had) similar toll booths.
A still functional (as of 2013) example in Oklahoma: https://www.google.co.uk/maps/@34.36...7i13312!8i6656
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Old March 12th, 2017, 02:14 PM   #3703
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The photo code doesn't work properly.

I found this one on Wisconsin State Route 23 west of Sheboygan. I don't think it was built for a toll plaza...

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Old March 12th, 2017, 07:07 PM   #3704
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what the...
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Old March 13th, 2017, 04:08 AM   #3705
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Seems legit..
Actually the houses on the lower left prevented the same round design above, that's my guess
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Old March 13th, 2017, 04:45 AM   #3706
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^ I don't think that's the case. I'm guessing that all of the development is to the south of the highway, so they designed the interchange as such so all of the prominent movements would be a right turn on and off of the freeway.
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Old March 13th, 2017, 05:56 AM   #3707
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The houses look newer than the freeway. And that interchange design would lead to conflicting movements below the underpass.
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Old March 13th, 2017, 06:03 AM   #3708
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Quote:
Originally Posted by 00Zy99 View Post
The houses look newer than the freeway.
There is a town to the south of the freeway.

Quote:
Originally Posted by 00Zy99 View Post
And that interchange design would lead to conflicting movements below the underpass.
Nobody said it was a good design.
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Old March 13th, 2017, 06:22 AM   #3709
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Quote:
Originally Posted by 00Zy99 View Post
The houses look newer than the freeway. And that interchange design would lead to conflicting movements below the underpass.
Look at the traffic density, the weave movement doesn't seem to be of any importance here
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Old March 13th, 2017, 06:25 AM   #3710
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^ Agree. Poor road design tends not to reveal itself to the average driver until the road gets busy.
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Old March 13th, 2017, 04:06 PM   #3711
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There being a town to the south doesn't impact on the placement of the ramps. The houses right next to the ramps do.
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Old March 13th, 2017, 04:53 PM   #3712
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^ I'm not sure what you mean? The most common interchange design in Wisconsin is a standard diamond. The houses to the southwest do nothing to constrain that design. If they had have built a diamond for the northern side ramps, most traffic exiting the highway would have to turn left onto the overpass, because all of the development is located to the south of the highway. Same thing, traffic coming from the town to the south would have to turn left to go west on Wisconsin Hwy 23 with a standard diamond configuration. With the loop ramp design, all traffic would mostly have to turn right to access the freeway. I'm not really defending the design, but I have to think that was the logic between it and a more standard design.
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Old March 13th, 2017, 05:18 PM   #3713
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I was responding ultimately to post # 3705 about the houses encroaching on the right of way.
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Old March 14th, 2017, 02:56 AM   #3714
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A diamond interchange for Highland Drive and WI-23 would be too close to the WI-23 interchange with I-43, more specifically the westbound WI-23 (Eastbound between Highland Drive and I-43 have more merge space and an auxiliary lane than westbound). That is why westbound WI-23 exiting to Highland Drive is a loop. The low traffic count for traffic from Highland Drive to westbound WI-23 negates spending millions to eliminate that loop and building a new straight ramp. The traffic count for traffic from Highland drive to westbound WI-23 was 1,500 in 2014 whereas the traffic count for traffic from westbound WI-23 to Highland Drive was 2,600 in 2014.
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Old March 14th, 2017, 10:03 PM   #3715
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US 27, Georgia

U.S. Highway 27 widening creates four-lane corridor from Indiana to Florida

The recent completion of the widening of a 9.13-mile section of U.S. Highway 27 in Randolph County also finished the construction of a four-lane traffic artery extending from Indiana to Florida, Georgia Department of Transportation officials said.
Full report: http://www.albanyherald.com/news/loc...2fc088fc8.html

Interesting factoid.
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Old March 15th, 2017, 12:28 AM   #3716
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It's fascinating to go back to the very first post of this thread (186 pages and eleven years ago) on the new Seattle Waterfront Tunnel, replacing the old and barely still-standing Alaska Way Viaduct. Since an admittedly major, nearly disastrous "hiccup", Bertha is nearing the end of her route and should break through the northern portal in May. A lot of work on the south and north portals has been completed and the actual roadway is being constructed inside the tunnel. Article from CityLab contains interesting video.
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Old March 15th, 2017, 12:49 AM   #3717
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Quote:
Originally Posted by ChrisZwolle View Post
There's some even more spectacular Texan future proofing here:

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Last edited by Ryme Intrinseca; March 15th, 2017 at 01:09 AM.
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Old March 15th, 2017, 12:51 AM   #3718
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Quote:
Originally Posted by ChrisZwolle View Post
U.S. Highway 27 widening creates four-lane corridor from Indiana to Florida

The recent completion of the widening of a 9.13-mile section of U.S. Highway 27 in Randolph County also finished the construction of a four-lane traffic artery extending from Indiana to Florida, Georgia Department of Transportation officials said.
Full report: http://www.albanyherald.com/news/loc...2fc088fc8.html

Interesting factoid.
Is the entire length of US 27 four lanes now? Even its historic length up to Grayling MI on what is now I-69 and US 127 is also at least four lanes.
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Old March 15th, 2017, 12:55 AM   #3719
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Quote:
Originally Posted by Ryme Intrinseca View Post
There's some even more spectacular Texan future proofing here:

https://www.google.co.uk/maps/place/...018131!6m1!1e1
If current growth rates continue, it won't be long until SH 105 becomes to Houston what US 380 is to Dallas. A northern east-west route that becomes part of the urban grid. In case of US 380, they waited too long to upgrade it to freeway standards and are now looking for more crooked alignments for a freeway or toll road.

The Conroe area has seen some rapid growth now that The Woodlands becomes built-out.
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Old March 17th, 2017, 01:29 PM   #3720
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Quote:
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Is the entire length of US 27 four lanes now? Even its historic length up to Grayling MI on what is now I-69 and US 127 is also at least four lanes.
No, it isn't. Whoever wrote that is smoking crack. Also, AFAIK, there's still a mountainous two-lane section between Rome and Summerville Georgia that needs to be bypassed.
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