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Maintenance Article September 09, 2014
When a destructive landslide unexpectedly closed historic Beaminster Tunnel in southwest England, it cut off a busy transportation route and threatened to damage the economy of the nearby town, which relied on the northern access roadway.   Originally opened to horse-drawn traffic in 1832, the...
Maintenance Article September 09, 2014
U.S. transportation agencies are facing unprecedented challenges of tremendous proportions.   On the cusp of a historic infrastructure crisis, the Federal Highway Administration estimates that $170 billion in capital investment is needed on an annual basis to significantly improve the conditions...
Bridges Article September 09, 2014
When the original design for an overseas bridge does not satisfy the concerns of the host nation, it is time for the engineering firm to develop an innovative solution.   That is what HNTB Corp. did in the case of a bridge that was built to link the U.S. Navy Support Activity Base to the U.S. Navy...
Concrete Article September 09, 2014

The NGCS consists of diamond grooving a surface using 3.2-mm-wide longitudinal grooves saw-cut to a depth of 3-5 mm at 12.5- to 16-mm centers.

Australia’s Roads and Maritime Services (RMS) recently constructed several test sections utilizing diamond saw-cut textures on their concrete pavement as part of a continued effort to minimize tire-pavement road noise. The completed research has resulted in the development of a low-noise-diamond-...
Bridges Article September 09, 2014
To learn about the bridges of Chongqing, we first need to know a few facts about China.   China’s total land area of 3.7 million sq miles is about the same as the U.S. However, its total arable land of about 0.55 million sq miles is less than the U.S.’s 0.68 million sq miles. Of the U.S.’s 317...
Asphalt Article September 09, 2014
In July, the Northeast Anthony Henday Project, the final leg of the new ring road around Edmonton, Alberta, reached its halfway point.   The massive project includes the construction of 17 miles of six- and eight-lane divided roadway and 47 bridge structures, including 37 highway bridges and...
Asphalt Article September 09, 2014
The recent redesign of a disjointed section of the Arborway through Boston’s Forest Hills/Jamaica Plain neighborhoods became a transformative endeavor, as an army of designers, consultants, government agencies and stakeholder groups worked for months to strike a balance between livability and...
Highway Construction News September 09, 2014
When construction eventually begins on the proposed Intermountain West Corridor, designated I-11, it will have a home in Nevada after the state transportation board selected U.S. 95 as the connector between Las Vegas and I-80. Decisions still must be made on how the proposed interstate will serve...
Winter Maintenance Article September 08, 2014
In most parts of the country, the average lifespan of a snowflake increased dramatically last winter. Public works officials are hoping the numbers are not doctored in 2014-15.   An unforgiving polar vortex inflated snowfall totals and dropped average temperatures, taxing even the agencies built...
Maintenance Article September 08, 2014
Persistent cold combined with numerous precipitation events last winter challenged snow fighters from the Midwest to the East Coast and points south to the Gulf Coast. Winter 2013-14 broke records and demanded flexibility in winter-maintenance tactics.   Public agencies responded with ingenuity,...
Maintenance Article September 08, 2014
These days the Iowa Department of Transportation talks a lot about dashboards, especially when it comes to our maintenance operations. With more than 900 snowplows, that is a lot of actual dashboards—but the ones we talk the most about can be viewed on a desktop, laptop, tablet or other mobile...
Maintenance Article September 08, 2014
In the past two decades or so, anti-icing has been gradually adopted by North American highway agencies as a proactive approach to addressing winter driving safety.   Fixed automated spray technology (FAST) systems are designed as a fixed-asset technology for anti-icing at specific target areas,...
Maintenance Article September 08, 2014
The Great Winter of 2013-14 will be remembered by tens of millions as one of the coldest and snowiest in memory. For months on end extreme weather conditions pummeled the Eastern Seaboard, Midwest and even the Deep South with some of the largest snowfall volumes and lowest temperatures recorded...
Bridges News September 08, 2014
The Vermont Agency of Transportation is thinking outside the box to reduce the number of structurally deficient bridges in the state, utilizing a longer-lasting design that can be built quicker than traditional methods.   When the bridge over the Wanzer Brook in Fairfield needed replacement last...
News September 05, 2014
State DOTs will not have to be as convincing to the FHWA when it comes to receiving federal grants.   In the past, agencies had to conduct a cost-benefit analysis (value engineering) on highway projects costing more than $25 million and bridge projects tagged in excess of $30 million.   Under new...
Case Studies September 05, 2014

Hyvinkaan Tieluiska is the finishing contractor on a major highway project in Finland.

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Hyvinkaan Tieluiska is the finishing contractor on a major highway project in Finland, designed to improve the Helsinki ring road junction with the highway to Tampere—the country’s second-largest city.   It is critical that the job be completed on time, meaning the contractor needs strong,...
Traffic Management News September 04, 2014
During its Advanced Safety Seminar in Ypsilanti, Mich., Toyota announced it would be putting an additional $35 million toward automated- and connected-vehicle safety research over the next six years.   The funding will be channeled to Toyota’s Collaborative Safety Research Center (CSRC) in Ann...
News September 03, 2014
After opening the wallet last year, many would think the state of Maryland was putting a clamp on the coin in 2015. The agency, however, made its move in 2013, which is why there is only a call for about $280 million in new projects for the coming years.   The Maryland DOT unveiled a lighter budget...
Traffic Management News September 03, 2014
Responding to safety concerns regarding access to MnPASS express lanes, researchers at the University of Minnesota Traffic Observatory (MTO) evaluated two types of lane designs to see if one was safer than the other. Results indicate, however, that lane design has little impact on traffic mobility...

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