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Will the Real Leader Please Stand Up on Nationwide Tolling?

Aug 21, 2014

Will the Real Leader Please Stand Up on Nationwide Tolling?

It’s time to take a much closer look at tolling on a national level to fund our transportation infrastructure, but we will require leadership at a whole new level. The existing method, the gas tax, is obsolete. I won’t waste ...

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3 strategies for balancing safety and roadside weed control

Aug 14, 2014

3 strategies for balancing safety and roadside weed control

Balancing public and crew safety while maintaining effective roadside weed control is an ongoing challenge for DOT managers. Rights of way can be dangerous places when weeds obstruct sightlines, compromise road surfaces and provide fuel for wildfires. To learn more about ...

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Strategizing for Safety

Aug 06, 2014

Strategizing for Safety

How the construction team for Minnesota’s Highway 23 Paynesville Bypass completed this project ahead of schedule despite truncated work season.   As with many of the older roadways in the United States, increased traffic has made them congested and ultimately unsafe. Minnesota ...

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In the Groove with Diamond Grooving and Grinding

Jul 02, 2014

In the Groove with Diamond Grooving and Grinding

Diamond grooving and grinding are being used to restore rough or polished concrete pavements to ultrasmooth conditions and quell noise – but at a price. By Tom Kuennen, Contributing Editor Diamond grooving and grinding of aging portland cement concrete (PCC) pavement renews ...

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Choosing the Right Machine for Proper Soil Compaction

Jul 02, 2014

Choosing the Right Machine for  Proper Soil  Compaction

Experience, type of soil, method specification and available equipment are all part of making this decision. (Editor’s note: This excerpt first appeared in The Cat Paving Products Guide to Soil Compaction. The book is available on Amazon.com and through participating Cat ...

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Minnesota’s New Solutions for Aging Pavement

Jun 05, 2014

Minnesota’s New Solutions for Aging Pavement

Using myraid concrete pavement restoration techniques, this state DOT minimized cost and traffic disruption while maximizing longevity and optimizing results. A recently completed project on the heavily trafficked I-94 between Minneapolis and St. Cloud, Minnesota, provides an example of how one ...

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Size Matters in Mix Grades and Aggregate Shapes

May 06, 2014

Size Matters in Mix Grades and Aggregate Shapes

Whether it’s dense-graded, open-graded or gap-graded mix or stone-matrix asphalt, don’t forget their impact on compaction. Many contractors look to temperature when contemplating compaction needs. Yet, some off-site specifications also have a significant impact on the jobsite. These include mix design ...

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Buying Time with U.S. Bridges

May 06, 2014

Buying Time with U.S. Bridges

New technologies and products can extend pavement life to help address the chronic pavement problems of the highway and bridge building industry.   A number of problems have converged to create a perfect storm that threatens the condition of the United States’ ...

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Inflation is Key

Apr 25, 2014

Inflation is Key

Maintaining Optimal Tire Pressure is Essential to a Successful Preventative Maintenance Program A kick to a tire doesn’t reveal much more than the stiffness of your boot and it certainly isn’t a good gauge of the level of air pressure in ...

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Roundabouts And Intersections: Two Traffic Control Devices, Many Options

Apr 18, 2014

Roundabouts And Intersections: Two Traffic Control Devices, Many Options

Roundabout design was once a task that drove engineers around the bend. Accounting for so many variables in the early stages of design was difficult to manage. If one changes an approach leg angle, how does that impact design? When ...

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Saving Sacred Lives

Apr 12, 2014

Saving Sacred Lives

We’re not supposed to admire Sweden because its economic system employs many socialistic practices, ranging from single-payer healthcare to high income tax rates. Still, a recent article in The Economist about traffic safety in that country made it hard not to ...

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Behind the Design of Colombia’s First Four-Lane Road

Apr 11, 2014

Behind the Design of Colombia’s First Four-Lane Road

Mario Huertas Corporation won a $400 million, five-year highway contract to design and build this major part of the country’s infrastructure. With a $20 billion strategy geared toward revamping Colombia’s limited transport infrastructure, the country is tackling a number of ambitious ...

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