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Oklahoma City Metro Highways | Small projects and construction

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Plutonic Panda:
Douglas BLVD/ I-40 interchange meeting was today.

https://www.ok.gov/odot/Programs_and_Projects/Public_Meetings_and_Hearings/20170117.html

Three alternatives


--- Quote ---Alternative 1 - Single Point Urban Interchange (SPUI) -- A Single Point Urban Interchange is a basic diamond interchange with a single signalized central intersection in the center of the bridge. The Douglas Boulevard traffic along with the I-40 ramp traffic will converge to a single point utilizing the single set of traffic signals. The SPUI interchange accommodates large traffic volumes efficiently with minimal right-of-way impacts. I-40 will be improved to a six-lane facility. Through the interchange, Douglas Boulevard will consist of six through lanes, dual left-turn lanes, and right-turn lanes where needed. Entrance and exit ramp lanes will also be constructed along I-40. Collector-distributor roads will be removed and will not be re-constructed. See attached graphic of SPUI.

Alternative 2 - Tight Urban Diamond Interchange (TUDI) with Ramp Flyover A Tight Urban Diamond Interchange is an interchange that compresses a standard diamond interchange. This design includes all four interchange ramps, as well as the option of adding a future flyover ramp for northbound Douglas Boulevard traffic destined for westbound I-40. The compressed interchange with the ramp flyover accommodates large traffic volumes efficiently by removing a heavy left turn movement from the interchange and the resulting footprint requires minimal right-of-way. I-40 will be improved to a six-lanes facility. Through the interchange, Douglas Boulevard will consist of six through lanes, dual left-turn lanes, and right-turn lanes where needed. Upon construction of the northbound to westbound ramp flyover, the northbound to westbound left-turn lanes on Douglas will be removed. Entrance and exit ramp lanes will also be constructed along I-40. Collector-distributor roads will be removed and will not be re-constructed. See attached graphic of TUDI.

Alternative 3 - Cloverleaf Interchange The existing cloverleaf will be completely reconstructed to accommodate widening I-40 to a six-lane facility. All ramps and both collector-distributor roads will be reconstructed. Through the interchange, Douglas Boulevard will consist of four through lanes, two lanes for loop ramp weaving, two additional lanes located in the median which can be used in the future for left turning traffic, and entrance and exit lanes where needed. Entrance and exit ramp lanes will also be constructed along I-40. See attached graphic of the new cloverleaf.
--- End quote ---

Personally I prefer option 2 because I'm a fan of flyovers and it takes less space than a cloverleaf and hate cloverleafs in general.

Bobby5280:
I prefer the SPUI alternative for that intersection.

The 2nd alternative with the "future" flyover would be decent for traffic leaving Tinker AFB and going toward downtown OKC. But there is no guarantee that future flyover would ever be built. All the other traffic movements would be stuck in a standard diamond interchange with a pair of traffic signals flanking both ends of the Douglas Street bridge over I-44. That's a bit much in terms of red light fatigue when there's another traffic signal at SE 29th Street immediately north of the interchange. Cloverleaf interchanges cut out the traffic signals, but at the expense of traffic weaving conflicts with cars entering and leaving I-40 in the same space.

Plutonic Panda:
Not even going to lie here, I like alternative 2 just because of the flyover and that it would be unique to OKC and that is about my only argument for it is for the sake of looking cool. I echo your concern about it not being guaranteed and knowing ODOT if they did decide to built it; it would take years to get it done.

Here are the alternatives:

Alternative 1:


Alternative 2:


Alternative 3:


https://www.ok.gov/odot/Programs_and_Projects/Public_Meetings_and_Hearings/20170117.html

Plutonic Panda:
Guthrie Viaduct construction begins:


--- Quote ---Traffic Advisories
Wednesday, January 18, 2017

SH-33 bridge reconstruction, widening in Guthrie begins Jan. 30

Motorists should be aware of construction on SH-33 in Guthrie starting Jan. 30 and use caution through the area. Eastbound and westbound SH-33 will remain open at Cottonwood Creek between 12th St. and Division St. during the initial reconstruction and widening of the bridge to four lanes.

The new bridge will be built parallel to the existing structure to limit disruption to traffic during the project with completion anticipated by late summer 2018. However, motorists may anticipate some lane closures and lane shifts later in 2017.

Manhattan Road and Bridge Co. of Tulsa was awarded the $17.2 million contract in October 2016.
--- End quote ---

https://ok.gov/triton/modules/newsroom/newsroom_article.php?id=277&article_id=28695

Scott5114:

--- Quote from: Bobby5280 on January 18, 2017, 03:44:03 PM ---Douglas Street

--- End quote ---

Careful with your Douglases...This is Douglas Boulevard. OKC also has a collector on the SW side that's named Douglas Avenue.

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