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Old November 18th, 2013, 08:35 PM   #9261
ChrisZwolle
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This looks like an extradosed bridge. They look like cable-stayed bridges, but the load is different.

edit: it is an extradosed bridge:

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Old November 19th, 2013, 07:19 AM   #9262
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Wrong thread, not an Interstate (or planned to be one).
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Old November 19th, 2013, 06:19 PM   #9263
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pro:
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Can Structures by Utah DOT, on Flickr
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Old November 19th, 2013, 10:30 PM   #9264
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I-85, Yadkin River Bridge, NC

The new Yadkin River Bridge along Interstate 85 in North Carolina. It's northeast of Charlotte.

This recently constructed bridge replaces a narrow 4-lane bridge with no shoulders. It's a huge improvement. The new bridge was built on a new alignment and the old bridge has been demolished.

The new bridge was dedicated on November 8.

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Yadkin River Veterans Memorial Bridge Dedication by NCDOTcommunications, on Flickr
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Old November 20th, 2013, 01:10 PM   #9265
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This part of the I-85 corridor saw the existing US 29 four-laned, then replaced with a freeway before the Interstate system was even started!

The old bridge carrying US 29 over the Yadkin River is being replaced, too.

I suspect that the segment of I-85 between the junction with US 29 and Lexington was built as an at-grade dual highway, then upgraded to a freeway in the late '50's-- it has a narrow right of way with frontage roads very close to the travel lanes and serving some highway-oriented businesses. With the reconstruction complete, though, it looks pretty much like any other modern Interstate. That said, the first few miles of Green 85 still look... evolved.
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Old November 20th, 2013, 06:58 PM   #9266
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I-91 Springfield, MA

Governor Patrick Announces $200 Million for I-91 Viaduct Project

Governor Deval Patrick today announced a $200 million investment in Phase 1 of the I-91 Springfield Viaduct project (...). These investments in Greater Springfield will help unlock potential for additional economic and community development opportunities in the region. Governor Patrick made the announcements while speaking to the Associated Chambers of Commerce of Greater Springfield at the Springfield Marriott.

“Growth requires investment, and moving forward on the I-91 viaduct project and upgrading our urban parks will create growth and opportunity in Springfield and beyond,” said Governor Patrick. “If we want to expand opportunity in our Commonwealth, this is what government must do and do well.”

Once completed, the I-91 Springfield viaduct deck replacement project will increase safety and accessibility on the busy interstate. The bridge decks are currently in poor condition and in need of replacement. The elevated viaduct carries I-91 through Springfield with the I-291 Interchange to the north and State Street to the south. I-91 has an Average Daily Traffic volume of approximately 75,000 vehicles per day and 90,000 vehicles on the I-91/291 Interchange. The viaduct is the primary North-South route between Connecticut, Massachusetts and Vermont, leading to extensive vacation traffic during the weekends in the summer and winter. Construction is slated to begin in November 2014 and the preliminary cost estimate for the project is $200 million. The Massachusetts Department of Transportation (MassDOT) has previously announced Phase 2 of the project, which allows MassDOT’s Office of Transportation Planning to begin a planning study that will identify existing issues and evaluate alternative alignments of I-91, including at-grade and below-grade alternatives, which may be less disruptive to the urban environment and could provide a regional highway connection that is more environmentally and financially sustainable in the long-term than the existing configuration. The I-91 viaduct currently is currently a barrier between downtown Springfield and the Connecticut River Riverwalk. The study’s developed alternatives will identify ways to strengthen both the multi-modal accommodations within Springfield and the connections between downtown Springfield and the waterfront.

"The viaduct is a critical artery for residents of the Greater Springfield area," said MassDOT Secretary and CEO Richard A. Davey. "We have a responsibility to make investments in projects like these in order to assure continued economic growth in the region and a safe commute for all who travel."
Full press release: http://www.mass.gov/governor/pressof...t-project.html

A lot of media talk about how I-91 cuts downtown off from the waterfront. None of them however, mention that there is also a rail corridor between I-91 and the river. I-91 is a bit of an eyesore though, but most of the structures right next to I-91 are parking garages.

$ 200 million will replace the bridge deck quite adequately, but they appear to plan to bring I-91 at grade or below grade in a second phase. This sounds like spending money twice on the same thing. Maybe the deck replacement can't wait until funding for an underground solution becomes available, but that is just poor planning (politics).
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Old November 20th, 2013, 07:38 PM   #9267
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I-70 / I-79 interchange, Washington, PA

A large flyover ramp opened to traffic last week near Washington, Pennsylvania at the eastern I-70 / I-79 interchange. It replaced a loop ramp. The flyover is quite tall, due to natural height differences.

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Old November 20th, 2013, 07:39 PM   #9268
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Ah, "New Stanton." One of the smallest places in the country with "control city" status. (Actually, a "Washington, D.C.," would not be out of place there, and not unhelpful to the confused. By the way, apparently the locals call Washington, Pa., "Little Washington.")
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Old November 20th, 2013, 07:49 PM   #9269
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Quote:
Originally Posted by ChrisZwolle View Post
A large flyover ramp opened to traffic last week near Washington, Pennsylvania at the eastern I-70 / I-79 interchange. It replaced a loop ramp. The flyover is quite tall, due to natural height differences.

It's good to see that interchange finally being upgraded. It's a real tight one; as I recall, a lot of accidents there. I had a near hit there once.
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Old November 21st, 2013, 06:45 AM   #9270
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Quote:
Originally Posted by ChrisZwolle View Post
The new Yadkin River Bridge along Interstate 85 in North Carolina. It's northeast of Charlotte.

This recently constructed bridge replaces a narrow 4-lane bridge with no shoulders. It's a huge improvement. The new bridge was built on a new alignment and the old bridge has been demolished.

The new bridge was dedicated on November 8.

image hosted on flickr

Yadkin River Veterans Memorial Bridge Dedication by NCDOTcommunications, on Flickr
I gotta say, I drove that old bridge many a time going between my parent's house in Charlotte and college in Chapel Hill. Good riddance! I always said a prayer before crossing it.
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Old November 21st, 2013, 02:41 PM   #9271
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Top story on my clock radio this morning: http://philadelphia.cbslocal.com/201...-funding-bill/

For those who don't feel like reading it:
Funding for roads and transit, Department of Transportation can raise speed limit to 70 mph (about 115 km/h) "on certain roads."

Radio version of the story (or maybe it was the teaser) mentions gas tax increasing up to 25 cents a gallon over five years. But it's needed.
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Old November 21st, 2013, 03:05 PM   #9272
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I-15 St. George, UT

New DDI in St. George (one of the fastest growing micropolitan areas). DDIs really seem to take off now, especially in the midwestern states.

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St. George Blvd. DDI by Utah DOT, on Flickr

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St. George Blvd. DDI by Utah DOT, on Flickr
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Old November 21st, 2013, 08:33 PM   #9273
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Latest photos of the ongoing construction of the I-22/I-65 interchange.

http://blog.al.com/spotnews/2013/11/..._river_default

Completion date is scheduled for late 2014.
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Old November 22nd, 2013, 08:15 AM   #9274
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Great pictures of that DDI! That said, I really dislike DDI's for the following reason:

Quote:
UDOT DIVERGING DIAMOND INTERCHANGE (DDI) OBSERVATIONS AND EXPERIENCE:
Coordination of the DDI with adjacent signals is not easily done. Most DDIs need a lower cycle length than the adjacent signals. This may result in a vehicle having to stop at both the off ramp terminal and the next adjacent signal.
The closest adjacent signal to the St. George DDI is 550 feet away (roughly an 8 second travel time at 45 mph). Who wants to get a green light only to come to a red light 8 second later? That's the epitome of inefficiency.
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Old November 22nd, 2013, 08:30 AM   #9275
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Here's an idea for a interchange that maintains good coordination along the main arterial. It's essentially a Parclo B4/DDI hybrid.

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Old November 24th, 2013, 11:24 AM   #9276
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I-95 New Haven, CT

Interstate 95 under construction in New Haven, Connecticut in 1956. This is the original Pearl Harbor Memorial Bridge, which is currently being replaced by a twin-span extradosed bridge (the first in the U.S.)

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Construction of the Connecticut Turnpike's Quinnipiac River Bridge in a smoky and industrial New Haven, Connecticut. 1956 ( The original Q Bridge). by wavz13, on Flickr

The new bridge opened in 2012 (first span). The second span will open in late 2015 or 2016.
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Q-Bridge by I.C. Ligget, on Flickr
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Old November 24th, 2013, 11:43 AM   #9277
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No more I-375? Detroit to study removing freeway in favor of walkable surface street

Quote:
For the first time in a half century, Detroit could follow a national trend and remove aging I-375, cutting off express downtown access for tens of thousands of motorists a day in favor of a pedestrian-friendly parkway connecting Lafayette Park and Eastern Market with the central business district.

Turning the trench-like interstate that runs from I-75 near Gratiot south to Jefferson Avenue into a surface street would make for easier connections between residential areas on the east side and central downtown. Creating that walkable ambiance would come at the cost of high-speed connections on I-375 that suburbanites take to reach the Renaissance Center, Cobo Center and other downtown destinations.

Removing the 1960s-era freeway could sprout residential communities anew in the once-thriving historic black areas known as Black Bottom and Paradise Valley that were torn apart five decades ago by local freeway construction, the same as in cities across the nation.
http://www.freep.com/article/2013112...-downtown-MDOT


Yes Please!!.
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Old November 24th, 2013, 05:53 PM   #9278
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Quote:
Originally Posted by ChrisZwolle View Post
Interstate 95 under construction in New Haven, Connecticut in 1956. This is the original Pearl Harbor Memorial Bridge, which is currently being replaced by a twin-span extradosed bridge (the first in the U.S.)

The new bridge opened in 2012 (first span). The second span will open in late 2015 or 2016.
The "Q Bridge" - Q for Quinnipiac (River) - is what they actually seem to call it, at least every time I've heard it mentioned on a traffic report while in that area. Just as a point of information.

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Originally Posted by urbanlover View Post


No more I-375? Detroit to study removing freeway in favor of walkable surface street



http://www.freep.com/article/2013112...-downtown-MDOT


Yes Please!!.
I mean no disrespect to Detroit in asking this question, but how much commuting is there into downtown Detroit these days anyway? The impression you get from the media is of a ghost town.
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Old November 24th, 2013, 07:03 PM   #9279
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Downtown Detroit traffic data. The segment to be demolished (actual plan or wishful thinking?) carries 18 800 vehicles per day.

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Old November 24th, 2013, 07:04 PM   #9280
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Downtown Detroit traffic data. The segment to be demolished (actual plan or wishful thinking?) carries 18 800 vehicles per day.

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