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Case Studies

Mabey Inc.’s line of products, engineering and responsive support created a stable work environment for a new storage tank system in Cobb County, Ga. The facility addresses issues created by heavy rainfall and plays a significant part in the advancement of Atlanta’s infrastructure. But its...

The finished product of an underground corrugated metal pipe that underwent a full rehabilitation.

At the end of a cul-de-sac in Houma, La., in Terrebonne Parish, a corrugated metal pipe ran along the back of two residential properties. Like so many of these pipes across the country, it was deteriorating and in desperate need of replacement.   Because of the location of the pipe, there were...

Redi-Rock gravity retaining walls in the Limestone texture were used to accommodate the grade change of this sloping construction site.

Grade changes and wetlands presented a major challenge to designers of the new Mount Kisco Medical Center.The access road to the development needed to meet the grade change requirements, minimize disturbance to the wetlands, and keep the site fully functional during construction. See how the design...
When Hurricane Irene assaulted the coast of North Carolina and caused a breach in the coastline near Rodanthe, the breach destroyed NC-12, the only road that gives residents and visitors access to the island. It was essential that access to the island be restored, and Mabey Inc. was there to lend a...
Lake Gaston is a hydroelectric reservoir in North Carolina and Virginia. It is a man-made lake, roughly 35 miles long, covering 20,000 acres and 350 miles of shoreline. Prior to the lake being formed, power line poles were installed in the area. The lake was then created and filled, and those same...

Culvert project avoided active roadway disruption via use of liner

In May 2015, the city of Ithaca, N.Y., contacted Don LeBlanc of the Snap-Tite Culvert Liner team (a division of ISCO Industries) to discuss and review a failing culvert underneath a major road in town. The culvert liner team specializes in analysis and the rehabilitation of structures via segmental...

Husqvarna FS 8400 flat saw cuts through concrete patch

Concrete Cutting and Breaking Co. (CCB), were hired to saw cut 9-in.-thick concrete pavement on I-95 in Miami-Dade County, Fla. CCB cut damaged roadway locations into 1 ft x 6 ft x 9 in. thick sections, also known as patches, in order for Gosalia Concrete Constructor Inc. to remove the damaged...
HDR was awarded the contract to design and build the new Tappan Zee Bridge—which will replace the current traffic-jammed Tappan Zee Bridge—on an aggressive schedule. Crossing the Hudson River at one of its widest points, the bridge was designed to include twin tower cable-stayed main spans with 1,...
Between December 13, 2014, and March 15, 2015, the New York City Department of Transportation (NYCDOT) filled nearly 160,000 potholes. But while all potholes need to be repaired, not all pothole repairs are the same.   The NYCDOT was considering reconstruction options for 1st Avenue, which had been...

End-of-Queue Warning System reduces crashes, saves lives.

The Texas Department of Transportation (TxDOT) End-of-Queue Warning System was first covered in Plastic Safety Systems’ March 2013 Case Study. An update was provided in a May 2015 Case Study. The following update combines the previously published information with newer information.      A concern...

Durabase temporary roadway mats enabled a road to be constructed directly in the waterway.

It’s a strange sensation to walk along a 300-ft roadway that rests at the bottom of a lakebed with the actual lake surrounding you on both sides. But that was the case in Asbury, NJ, this past summer, where the new Sunset Bridge project was underway.   As general contractor Kyle Conti Construction...

Photo copyright: Bob Perkoski

In July 2015, the first section of the Cleveland Foundation Centennial Trail was completed. This 10-ft-wide pathway connects Cleveland’s Scranton Flats area to the Ohio & Erie Canal’s Towpath Trail along the Cuyahoga River. The Scranton Flats, part of the Scranton Peninsula industrial zone, is...

An aerial view of Rehoboth Avenue, and the parade route. 

On Oct. 23, the Rehoboth Beach-Dewey Beach Chamber of Commerce (CC) hosted their 26th Annual “Sea Witch Halloween and Fiddler’s Festival.”   In part one of the story on the festival, the Delaware Department of Transportation (DelDOT) informed the Rehoboth CC that they must deploy crashworthy...

Each winter, the Idaho Transportation Department is charged with snow and ice control on over 12,000 lane-miles of highway covering mountain passes to rolling hills and valley floors.

The mission of the Idaho Transportation Department (ITD) is clear-cut: “Your Safety. Your Mobility. Your Economic Opportunity.” To verify and then evaluate and continuously improve the effectiveness of its winter road maintenance operations, ITD is implementing key systems for monitoring road...
To address the pavement distresses caused by upstate New York’s extreme changes in temperature, the New York State Department of Transportation (NYSDOT) had been using a variety of hot and cold patches for repairs. While this is a common practice in many states, it is rapidly changing due to the...
At a jobsite on Merritt Island in Brevard County, Fla., the public works department relies on just one piece of equipment to unearth and repair a water line beneath a street and then replace an outdated catch basin cover, followed by loading dirt. The county’s Gradall XL 4100 IV excavator is used...

Rigid lifting frame used to place precast grid panels

Interstate 81 is a vital trucking route along the Appalachian corridor and in particular, south central Pennsylvania. Years of heavy traffic and the harsh Northeast weather abused the parallel bridges spanning Leitersburg Road near Greencastle.   The conventional concrete bridge decks and steel...

SafetyWall is an ADA-compliant longitudinal channelizer that aids all pedestrians, regardless of their required level of guidance.

On Oct. 23, the Rehoboth Beach-Dewey Beach Chamber of Commerce (CC) will host the 26th Annual Sea Witch Halloween and Fiddler’s Festival. The festival features three full days of events. Among several choices, attendees can enjoy trick-or-treating and haunted bonfires on Friday, the Fiddler...

Precast reinforced concrete caps designed with LEAP RC-PIER were used for the majority of the spans. 

One of the most important bridges that the Louisiana Department of Transportation and Development (LADOTD) manages is the I-10 Twin Span Bridge crossing Lake Pontchartrain between Slidell, La., and New Orleans. Approximately 5.5 miles in length, this crossing includes a total of 11 miles of bridges...

The aggregate layer helps increase traction.The finished pavement overlay installation.

Two bridges in Toledo, Ohio, had undergone routine maintenance over the years. But while the bridges themselves were structurally sound, David Pratt and his public works team soon realized that further repairs to the wear surface were inevitable down the road.   Rather than plan for continual...

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