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Case Studies

TPRS deployment is easier, faster and safer with CRIB. 

When Area Wide Protective’s Eric Hulme evaluated Plastic Safety Systems’ (PSS) RoadQuake Temporary Portable Rumble Strip (RQ TPRS) for deployment in their traffic control operations, he identified two issues that would require solutions before adding TPRS to their operations.   Area Wide Protective...

VDOT builds the compact panel bridge on Route 721 in Fredericksburg, Va.

Like many of the aging bridges in the nation, a 63-year-old bridge in Fredericksburg, Va., was deemed ready for retirement. After inspection, the Virginia Department of Transportation (VDOT) determined that the two-lane, steel and beam bridge was no longer safe for motorists and needed to be...

This is what the project looks like in 2015 - exactly the same, despite multiple freeze thaw cycles and storm events.

This Ohio bridge was replaced in 2005 with the help of abutments made of Redi-Rock segmental retaining wall blocks.   "I came up with the design using Redi-Rock because it was a winter project and we didn't want to pour monstrous abutments," the county engineer said. How does the bridge look now,...
Curtis Contracting Inc. (CCI), based in West Point, Va., is a large regional contractor, specializing in all phases of asphalt pavement design and construction. They’re experienced in a variety of projects, including the massive paving required for an Amazon fulfillment center in Chester, Va., and...

Crews applying the Base One treatment method. 

Clinton County, Iowa, Engineer Todd Kinney was looking for a solution for 250th Street, a 2-mile aggregate surfaced road that serves mainly residential and agricultural property. The road connects to two county farm-to-market paved roads and U.S. Highway 30. The 2010 traffic count was 70 ADT. The...
Many culverts in the U.S. were installed 40 to 50 years ago and now have exceeded their design life and need repair. In this case, two 72-in.-diam. corrugated metal pipe (CMP) culverts in White Oak, Miss., started to fail. The Mississippi Department of Transportation (MDOT) District 7 feared that...

Epoxy-aggregate helps provide traction and anti-icing.

The Colorado Department of Transportation (DOT) wanted to protect their bridge decks, exit ramps and overpasses from corrosion. The seepage that can occur from applying deicing and anti-icing chlorides can also cause contamination and corrosion, and the DOT wanted to be proactive. Rather than...
Getting a crane in position to help do repairs on a major highway requires a lot of planning and the right machine capacity and configuration to get the job done—all in a tight space and on a tight timeline. When it happened near Toronto, ALL Canada Crane Rental was ready to help.   On Thursday,...

End-of-Queue Warning System on display at a TxDOT media event in May, 2013. 

In our Roads&Bridges case study from March 2013, we reported that the Texas Department of Transportation (TxDOT) had recently announced the installation of a new traffic safety countermeasure on I-35 work zones.   We then described the new countermeasure, known as the End-of-Queue Warning...

Murphy Concrete and Construction manages a large fleets of equipment.

Murphy Concrete and Construction is a third-generation, family owned heavy civil contracting business based in Appleton, Wis., that has been involved in asphalt construction for more than 33 years, providing materials to customers through their aggregate quarries, as well as constructing many of...

Construction crew member adjusting concrete final grade on a manhole riser. 

State Highway 183, from Euless to Dallas/Fort Worth, Texas, underwent a major reconstruction in 2014, a project totaling $1.6 billion. On projects of this size, even small changes can lead to a great deal of extra work, and such was the case when an unexpected grade change was required to correct...

Pulleys placed in position with the saw on top.

Precision Cutting & Coring of Kansas City, Kan., was contracted for a bridge overhaul project in May 2014 that required strict timing and precision. The overall project involved demolishing the top part of an old rail bridge then reconstructing it. Precision’s scope of work was to saw and...

CENTRA chose a Redi-Rock reinforced retaining wall to upgrade its bus depot facilities and create more space for parking.

THE CHALLENGE: Along U.S. Route 50 in Clarksburg, W.Va., stood a decaying, unusable bus depot. This depot was located adjacent to a bridge, with access into the depot coming directly off the bridge.   In 2014, the Central West Virginia Transit Authority (CENTRA) needed to upgrade its bus depot...
Built in 1956 to replace the original Cold War-era swing bridge in the location, the Cuyahoga River Bridge #1 is a steel vertical-lift bridge sometimes referred to as the “Iron Curtain”—likely due to its gateway-like location and vertical design. The 267-ft-long Iron Curtain is the last bridge that...

Workers in Wisconsin load the briner maker.

A few years ago, the City of Wauwatosa implemented a brine program for anti-icing and pre-wetting salt. As a pilot program, city officials were cautious when it came to investing in the upfront costs for an in-house brine maker without first seeing the results. Rather than batch their own brine,...
Most transportation agencies now use construction cameras to capture project views, keeping their teams and the public up-to-date in real time. As webcams evolve, each new version introduces higher-quality, more versatile tools. Project teams are realizing the benefits of using panoramic...

N-Line crew installs an array of RoadQuake 2F Folding Temporary Portable Rumble Strips.

In the last few years, the Texas Department of Transportation (TxDOT) has implemented several safety initiatives to enhance safety in work zones for both drivers and workers.   As one of those safety initiatives, TxDOT added temporary portable rumble strips (TPRS) to lane closures, effective with...

The deicer flows freely without clumping.

While it may encompass just 25 lane miles, Rutland Township takes its winter maintenance responsibilities seriously. That’s why Jay Schultz, highway commissioner for the western Chicago suburb, made finding the right road deicer a top priority.   “I’ve tried spraying salt with calcium chloride, I’...
The Nicollet County (Minn.) Highway Department needed to repair transverse cracks on County Road 13. This two-lane road has annual traffic of 302,950 vehicles, including large tractor-trailers. In addition to traffic, the fluctuating Minnesota weather plays a factor in creating pavement distresses...

Vertical Redi-Rock walls support the roadway above.  

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...

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