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Safety News March 11, 2015
The Federal Highway Administration (FHWA) and the American Association of State Highway & Transportation Officials (AASHTO) released the findings of a joint task force which evaluated field measurement data collected by FHWA engineers from more than 1,000 4-in. ET-Plus devices installed on...
Traffic Management News March 11, 2015
Americans took 10.8 billion trips on public transportation in 2014, the highest annual public transit ridership number in 58 years, according to a report released by the American Public Transportation Association (APTA).   “Some public transit systems experienced all-time record high ridership last...
Funding News March 11, 2015
While many major metro areas are shying away from long-term infrastructure plans in the midst of federal funding uncertainty, San Francisco recently introduced a 10-year fiscal plan to transform the city’s infrastructure with a series of major construction projects.   The capital plan for 2016-2025...
News March 10, 2015
The Minnesota Department of Transportation (MnDOT) is testing a crowd-sourcing application that will allow motorists to update winter weather road conditions on the state’s 5-1-1 system.   The Regional Transportation Management Center is planning a soft launch of Citizen Reporting in April,...
Traffic Management News March 10, 2015
Following what is quickly becoming a sign of digital progress within the state transit agencies, the New Mexico Department of Transportation (NMDOT) has thrown it’s ring into the digital court in effort to help its Park and Ride service patrons no longer have to wonder how much longer they have to...
Funding News March 09, 2015
Bud Wright, executive director of the American Association of State Highway and Transportation Officials (AASHTO) and American Public Transportation Association (APTA) CEO Michael Melaniphy will hold a briefing Tuesday, March 10 on highway and transit investment needs at the U.S. House Cannon...
Funding News March 06, 2015
Wisconsin Governor Scott Walker proposed a major investment ($1.3 billion) in road construction to help preserve and fix the state’s decaying roadways.     Growing consensus means republicans and democrats alike recognize the severity of the state’s road system but still question Walker’s funding...
Case Studies March 06, 2015

Vertical Redi-Rock walls support the roadway above.  

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The wall and roadway also support a 7.5 ton crane.

How do you support roadways when you’re contending with massive live loads? Engineers designing a new roadway for a winery were faced with this challenge on a recent project. The roadway needed to be located at the top of a 19 ft high retaining wall, which allowed trucks to unload grapes directly...
Public Transportation News March 06, 2015
This week, the U.S. House of Representatives moved to boost Amtrak’s service capabilities between Boston and Washington while simultaneously giving states a greater say in the local routes they help subsidize.   Approved by a vote of 316-101, the bipartisan bill authorizes $7.2 billion in federal...
Bridge Rescue News March 04, 2015
Some does not address the sum.   The state of Maine has more than 770 bridges that are more than 70 years old and need to be either repaired or replaced. About $70 million a year is spent on this crusade, but according to a new report at least $140 is needed.   Despite the shortfall, Maine DOT...
Funding News March 04, 2015
Following up on our news story of Feb. 13 of this year, the Washington state Senate this Monday approved a $15 billion transportation revenue package that includes an incremental gas tax increase of 11.7 cents over the next three years.   The revenue bull passed on a bipartisan vote; negotiations...
Public Transportation News March 04, 2015
Of the multiple projects presently on the slate in some form or other of planning and construction for the New York City Metropolitan Transportation Authority (MTA), there is one that might never meet the full potential of the agency’s vision for it.   According to MTA chairman Tom Prendergast, the...
Traffic Management News March 03, 2015
In effort to instill more efficiency, dependability and predictability into the bus service portion of its overall transit system, the Chicago Transit Authority (CTA) has announced its intention to begin work on a project that will effectively double the present 3-mph average bus speed in a pre-...
Highway Construction Article March 02, 2015

The new “Twins” offer three 12-ft driving lanes, a 4-ft inside shoulder and a 10-ft outside shoulder, as well as portal extensions beyond the rock face.

Colorado. Hearing the name of this great state brings to mind images of snow-capped peaks, clear mountain water used to brew Coors beer and the soft melody of John Denver’s timeless song, “Rocky Mountain High.”   One of the primary benefits of living in Colorado is the availability of so many...
Road Construction Article March 02, 2015
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I-90 is the main east-west transportation corridor in the state of Washington, connecting the large population and business centers of the western half of the state with the agricultural industries and recreational areas that comprise the eastern portion.   The uninterrupted movement of people,...
Pavement Maintenance Article March 02, 2015

The construction of MoDOT’s proven life-saving rumble stripes involves grinding them into the pavement, exposing what is very often a porous aggregate to the elements.

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MoDOT implemented an innovative approach, called scratch and seal, to provide minor corrections to an asphalt pavement surface and seal it with two different processes under the same construction project.

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A rumble stripe with a properly applied fog seal at the time of construction will protect the exposed aggregates from the elements.

The largest asset for the Missouri Department of Transportation (MoDOT) is its pavement. MoDOT maintains more than 77,000 lane-miles of roads, making it the seventh-largest highway system in the U.S. An agency’s ability to maintain pavement conditions is impacted by multiple factors, not least of...
Asphalt Article March 02, 2015

I-376 Section L04 is a major north/south artery in the greater Pittsburgh metropolitan area.

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Warm-mix asphalt was used to produce all 70,191 tons of mix required for the job.

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Upon completion, the IRI on this stretch of I-376 was reduced from 170 in./mile to 39 in./mile.

Twelve million: According to the U.S. Environmental Protection Agency, that’s how many tires are ground up and recycled into crumb rubber for use in asphalt pavements each year.   Yet, despite this impressive figure, the practicality of paving with crumb rubber remains an untried novelty in many...
Aggregates Article March 02, 2015

Norris Asphalt widened the roadway out 3 ft to each side to build new paved shoulders. 

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Scheduling material delivery proved to be one of the biggest challenges on the U.S. 34 project, requiring the use of Shuttle Buggies to get new asphalt in. 

Norris Asphalt Paving Co. faced an uphill climb to qualify as a finalist for the 2015 Sheldon G. Hayes Award, but in the end the company was able to make its way to the top.   The Ottuma, Iowa-based company was nominated for the asphalt paving industry’s highest honor thanks to its exemplary work...
Bridges Article March 02, 2015

Both eastbound and westbound relief bridges to the White River were completely replaced from the footings on up.

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413,000 tons of asphalt were used to bring the 10.3-mile section of I-40 up a full foot.

Ask the common man to describe a cavern and you’d likely be regaled with the stuff of discovery tucked into a picturesque mountainous landscape.   But ask a construction contractor astride Prairie County, Ark.’s I-40 in early 2014 for the same, and you would get a very different story.   “Many of...
Asphalt Article March 02, 2015

Total lift thickness for the roundabout was 6.5 in. The 19-mm mix was used for the first lift (2.5 in. thick) and second (2.25 in. thick), but Northeast Asphalt had to use a Wisconsin DOT higher ESAL mix for the 1.75-in. surface course.

Last year’s modern day Ice Age buried routes across the U.S. with its frozen malice.   Many public works officials had to pick through the remains of pavement during the spring and summer months of 2014.    Up in Wisconsin, the glacier-like effect left an 8.1-mile portion of State Trunk Highway (...

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