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Old February 5th, 2014, 06:51 AM   #2381
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^Nice, I love old photos of my hometown...
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Old February 5th, 2014, 09:00 AM   #2382
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It looks like that style of bridge was popular at the time.
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Old February 5th, 2014, 10:37 AM   #2383
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Yes, the steel cantilevered truss bridge was a very popular construction from the 1920s to the 1970s. Interestingly, this type of bridge was only very rarely used in Europe.

They are increasingly being replaced by cable-stayed bridges, especially those across the Ohio River. The main span of these cantilevered bridges usually maxes out at just under 1,000 feet. With steel being three times more expensive than it was 15 years ago, concrete cable-stayed bridges are often more cost-effective, plus local politicians tend to like the "signature" design.
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Old February 6th, 2014, 05:18 PM   #2384
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Chisholm Trail Parkway, Fort Worth, TX

The new Chisholm Trail Parkway will open to traffic in May 2014. The toll road extends from downtown Fort Worth to Cleburne and spans 28 miles of driving pleasure, as they call it.

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Old February 8th, 2014, 11:34 PM   #2385
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Harvey Tunnel

The Harvey Tunnel in suburban New Orleans. It was built in 1957.
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Harvey Tunnel by urbandecay., on Flickr
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Old February 9th, 2014, 01:57 PM   #2386
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Arizona - Nevada Border - Hoover Dam Bypass - U.S. 93 - October 2013

http://www.youtube.com/watch?v=mcTMc0NNcTY
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Old February 9th, 2014, 02:03 PM   #2387
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Downtown Chicago I90/94

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Old February 11th, 2014, 09:08 AM   #2388
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Every highway sign in the United States, in one map

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Old February 11th, 2014, 05:14 PM   #2389
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Spokane Street Viaduct in Seattle.
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Old February 11th, 2014, 05:28 PM   #2390
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Quote:
Originally Posted by bogdymol View Post
Every highway sign in the United States, in one map

That's brilliant, but it's not quite "every highway sign": many states number county roads, Texas has things like FM roads, and some toll roads (and other named-rather-than-numbered roads like the New York parkway system) have their own markers.

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Originally Posted by ChrisZwolle View Post
Spokane Street Viaduct in Seattle.
That bottom lane looks a bit warped.
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Old February 11th, 2014, 08:52 PM   #2391
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Beautiful concrete arch bridge in Spokane, WA. It was built in 1911.

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Bridge in Winter by scotts_pics, on Flickr
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Old February 11th, 2014, 10:17 PM   #2392
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US 68, Eggner's Ferry Bridge, KY

Gov. Beshear Announces Contract Award to Construct Kentucky Lake Bridge

Governor Steve Beshear today announced the award of a contract to build the first of the much-anticipated twin Lake Bridges in the tourism-rich Jackson Purchase of western Kentucky.

The $131.5 million project, awarded by the Kentucky Transportation Cabinet (KYTC) to Johnson Brothers Corp., of Fort Worth, Texas, will result in a modern, four-lane bridge to carry U.S. 68/KY 80 over Kentucky Lake and serve as the western entrance to Land Between The Lakes National Recreation Area.

The new bridge will replace the venerable but narrow and obsolete Eggners Ferry Bridge, which was built in 1932 and long ago ceased to meet modern design standards for the amount of traffic it must accommodate. The Eggners Ferry, joining Marshall and Trigg counties, has two lanes, each 10 feet wide, with no shoulders. The new bridge will have four travel lanes, each 11 feet wide, plus 4-foot shoulders and a 10-foot-wide pedestrian/bicycle path.

The larger Lake Bridges Project also includes replacement of the Henry Lawrence Memorial Bridge on Lake Barkley – a near twin of the Eggners Ferry. The KYTC is aiming to award a contract for the second bridge by December 2014.

In the Kentucky Lake region, approximately two miles of U.S. 68/KY 80 will be widened from two lanes to four lanes from Aurora, in Marshall County on the western shore, to just east of Kentucky Lake, where the project will connect to the four-lane roadway in the Land Between The Lakes. In the Lake Barkley area, the project will widen approximately 1.5 miles of U.S. 68/KY 80 from two lanes to four lanes from just west of Lake Barkley to just east of the lake.

Like the Eggners Ferry, the Lawrence Memorial Bridge, also built in 1932, no longer meets traffic demands in the region. Plans for the new bridge over Lake Barkley call for a design similar to that of the new Kentucky Lake bridge – four traffic lanes instead of two, with shoulders and a bicycle/pedestrian lane.
Full press release: http://migration.kentucky.gov/newsro...0211bridge.htm

project website: http://www.lakebridges.com

It will be a network tied-arch bridge. The 4 lanes is a bit over the top for 2,900 vehicles per day, but I suppose the additional cost for replacing it with a 4-lane instead of 2-lane bridge is not very high, and it will be safer. The rest of the corridor already features four lanes.



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Old February 14th, 2014, 09:19 PM   #2393
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Fort Madison Toll Bridge

Now this is a unique bridge. The Fort Madison Toll Bridge across the Mississippi River near Fort Madison, Iowa.

It is a double-deck, dual road/rail swing bridge! It's likely the longest/largest bridge of this type and is the southernmost movable bridge across the Mississippi River. It is a private toll bridge, owned by BNSF Railway. It opened in 1927.

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Fort Madison Bridge At Sunset by Partridge Road, on Flickr

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Bridge over the mighty Mississippi at Fort Madison, IA by laurienapa, on Flickr

The toll booth is actually located on the center of the swing bridge section. The tolls are only charged into Illinois.
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Old February 15th, 2014, 03:04 PM   #2394
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Apparently the TBM on Seattle project (Alaskan Way replacement) is broken down and will need to be repaired.
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Old February 15th, 2014, 05:48 PM   #2395
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MN-43 Winona Bridge

Another Mississippi River bridge project, the rehabilitation and construction of a second Winona Bridge.

The current bridge was built in 1941-1942 and is rated structurally deficient. The Minnesota DOT will rehab the existing bridge and construct a new concrete box girder bridge next to it.

Construction will begin in July 2014 and be completed in March 2015 (that is fast!) Construction cost is $ 150-175 million.

I'm surprised they're actually expanding the capacity of this bridge. The current bridge is not overloaded with 11,300 vehicles per day, but apparently they are anticipating substantial traffic growth in the Winona area. However, the North Channel Bridge (two lanes) will be left untouched for the time being.

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Old February 15th, 2014, 08:02 PM   #2396
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Minnesota Bridges

It appears that the state of Minnesota is replacing nearly all bridges across the Mississippi River south of Minneapolis.

From south to north;

* I-90 Mississippi River Bridge; currently being replaced
* MN-43 Winona Bridge; replacement planned for 2014
* US 63 Red Wing Bridge: replacement planned for 2018
* US 61 Hastings High Bridge: replaced 2013
* I-494 Wakota Bridge: replaced 2006/2010
* US 52 Lafayette Bridge: currently being replaced
* I-35E Lexington Bridge: replaced 2004
* I-35W Saint Anthony Falls Bridge: replaced 2008
* Lowry Avenue Bridge: replaced 2012

Most of these replacements were due to the 2007 collapse of the I-35W Mississippi River Bridge. This bridge type is what they call "fracture critical", which means that if one beam cracks, the entire bridge collapses.
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Old February 15th, 2014, 08:57 PM   #2397
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Quote:
Originally Posted by ChrisZwolle View Post
It appears that the state of Minnesota is replacing nearly all bridges across the Mississippi River south of Minneapolis.

From south to north;

* I-90 Mississippi River Bridge; currently being replaced
* MN-43 Winona Bridge; replacement planned for 2014
* US 63 Red Wing Bridge: replacement planned for 2018
* US 61 Hastings High Bridge: replaced 2013
* I-494 Wakota Bridge: replaced 2006/2010
* US 52 Lafayette Bridge: currently being replaced
* I-35E Lexington Bridge: replaced 2004
* I-35W Saint Anthony Falls Bridge: replaced 2008
* Lowry Avenue Bridge: replaced 2012

Most of these replacements were due to the 2007 collapse of the I-35W Mississippi River Bridge. This bridge type is what they call "fracture critical", which means that if one beam cracks, the entire bridge collapses.
These replacings are due to the end of life of the bridges, or due to construction/maintenance issues?
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Old February 15th, 2014, 09:56 PM   #2398
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Quote:
Originally Posted by ChrisZwolle View Post
It appears that the state of Minnesota is replacing nearly all bridges across the Mississippi River south of Minneapolis.

From south to north;

* I-90 Mississippi River Bridge; currently being replaced
* MN-43 Winona Bridge; replacement planned for 2014
* US 63 Red Wing Bridge: replacement planned for 2018
* US 61 Hastings High Bridge: replaced 2013
* I-494 Wakota Bridge: replaced 2006/2010
* US 52 Lafayette Bridge: currently being replaced
* I-35E Lexington Bridge: replaced 2004
* I-35W Saint Anthony Falls Bridge: replaced 2008
* Lowry Avenue Bridge: replaced 2012

Most of these replacements were due to the 2007 collapse of the I-35W Mississippi River Bridge. This bridge type is what they call "fracture critical", which means that if one beam cracks, the entire bridge collapses.
Are the ones that cross the Wisconsin line the responsibility of both states? (I'm sort of surprised there aren't more toll bridges along the Mississippi, actually. In the East, a state line often means toll bridges because of bi-state, toll-funded agencies being responsible for them.)
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Old February 16th, 2014, 04:08 AM   #2399
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Quote:
Originally Posted by Penn's Woods View Post
Are the ones that cross the Wisconsin line the responsibility of both states? (I'm sort of surprised there aren't more toll bridges along the Mississippi, actually. In the East, a state line often means toll bridges because of bi-state, toll-funded agencies being responsible for them.)
Of the bridges ChrisZwolle mentioned, only two of them cross state lines, I-90 and US 63/ Red Wing. There is some magic formula to decide who the lead DOT is (can't be bothered dig around the deepest depths of the WisDOT site to find it right now) but both states contribute to inter-state bridge projects.
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Last edited by brewerfan386; February 16th, 2014 at 04:21 AM.
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Old February 16th, 2014, 06:14 AM   #2400
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10,000 + pphd is usually when you can start justifying 4 laning though isn't it? I mean it isn't going to be a particularly busy 4 lane stretch, but my understanding is that 10,000pphd is around where you want to start looking at doing upgrades, especially if it is a regional route.
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