Case Studies

spray-applied waterproofing
The Blue Ridge Parkway revels in its new autumn shades of yellow, orange and red that follow the road’s meandering, peaceful curves. Quickly, the brisk fall weather turns to biting winter cold, and the skies shift from clear blues to darker greys. The landscape becomes stark, quiet and still as the...
ALL Crane Orlando I-4 project
The metamorphosis of car travel in, around and through Orlando, Fla., continues with the expansive I-4 corridor project. This 21-mile, $2.3 billion project is completely changing the way traffic is routed and managed through one of the largest metroplex areas in the world. The ultimate goal is less...
Peachtree Street accessible work zone demo
PEDS is an advocacy group that provides, according to their website, “technical expertise, outreach and training that helps make streets safe and inviting places to walk.” Founded 20 years ago in Atlanta, PEDS works with local, regional and state governments, and other advocacy groups to make...
Reinforced concrete structures, such as bridges, can be exposed to aggressive chloride environments and often show evidence of corrosion after short service periods

Reinforced concrete structures, such as bridges, can be exposed to aggressive chloride environments and often show evidence of corrosion after short service periods.

Numerous reinforced concrete structures worldwide, such as bridges and offshore platforms, are exposed to aggressive chloride environments and show evidence of corrosion after short service periods. The cost of repairing or replacing deteriorated structures has become a major liability for highway...
Illinois Tollway Ameristar Stalwart Impasse II fencing system
The Illinois Tollway Highway Authority had 60 critical cell tower sites along its roads that needed to be protected from unwanted intruders and from vehicle impacts.   Gonzalez Companies in Downers Grove, Ill. and Singh & Associates in Chicago researched the best product on the market suited...
gradall excavator
*/ The road and bridge department in Anderson County, S.C., is charged with handling a wide range of jobs for its 187,000 residents. “We try to get the best equipment, the most productive equipment, the most reliable equipment that we can possibly get for the budget we have,” said Joe Moss, the...
Panels were put in place to prepare for cast-in-place pour

Panels were put in place to prepare for cast-in-place pour

A partially filled concrete grid bridge deck was selected as a major component of the solution for the lightweight superstructure replacement on I-895 over Patapsco River Flats for the Maryland Transportation Authority (MDTA).   Rummel, Klepper & Kahl LLP (RK&K) of Baltimore secured the...
Completed column and pier cap

Completed column and pier cap

The South Carolina Department of Transportation (SCDOT) found corrosion-related deterioration of the pier caps and columns supporting the Butler Road bridge over I-385 in Greenville, S.C., during a routine inspection. The corrosion was caught early enough and was limited to only one column and a...
41st Street Pedestrian Bridge in Chicago
This summer, a curving blue metal structure under construction along Chicago’s lake shore captured the attention of residents and local media because of its resemblance to a roller coaster. Had some enterprising amusement company chosen to build a thrill ride along Lake Michigan? Turns out that the...
RoadQuake TPRS deployed in work zones reduce crashes and save lives

RoadQuake TPRS deployed in work zones reduce crashes and save lives

On February 8, 2017, KTVN TV reported a fatal work-zone crash:   “…a 2006 black Freightliner semi was traveling southbound where it was approaching traffic being halted by a flagger in a construction zone. [Nevada Highway Patrol] says a 2000 red Ford F-150, 2015 white Toyota 4Runner, and 2007 beige...
Adjustable risers improve paving in Milwaukee
Stark Asphalt, headquartered in Milwaukee, is one of Wisconsin’s largest and most progressive paving firms. It has been in business for more than 50 years, operates four asphalt drum mix facilities and, in 2011, completed the single largest asphalt paving contract in the history of the Wisconsin...
EarthCam software
Building a bridge is a complex process, and deconstructing one as intricate as the Goethals Bridge spanning the Arthur Kill between Elizabeth, N.J., and Staten Island, N.Y., is equally as complicated. The deconstruction process required reversing the order of the original bridge’s construction. The...
Completed CC8 invert rehab, with sealed edges
On highway M-20, east of New Era, Mich., a 70-ft metal plate arch culvert was experiencing moderate to severe section loss in the invert from corrosion and abrasion. The steep decline in condition due to corrosion was attributed to the intermittently flowing creek and the invert’s frequent exposure...
ALL Crane
It is often said that football is a game of inches. So is using two cranes to set 120,000-lb bridge beams.   “With those final, exacting adjustments, you absolutely must have selected the right machines and the most experienced operators,” said Edwin Suazo, project coordinator for ALL Sunshine...
WV Turnpike ABC
The West Virginia Turnpike, an 88-mile four-lane toll road including stretches of I-77 and I-64, is a winding and elevated highway through mountainous terrain. There are 116 bridges on the Turnpike, and prior to 2016, the average bridge age was 32 years old. In 2016, the Turnpike commenced a...
ET Simonds manhole
Since 2006, adjustable manhole risers have been just right for a project detail that had previously been a bit of a hassle for E.T. Simonds Construction Company in Carbondale, Ill. “We do all sorts of road-related work, and of course we do a lot of paving jobs that require the raising of manholes...
Stabilization & the harmonious blending of highway interchange slopes
The Interstate 90 Bridge over the Mississippi River between La Crosse, Wis., and La Crescent, Minn., is a heavily used commuter route and part of the longest interstate highway—I-90—in the country, spanning from coast to coast and providing important commercial and defense infrastructure for the...
Manhole riser in Jefferson County, Ala.
Home to Birmingham, and more than 660,000 residents, Jefferson County is Alabama’s most populous county. The sewer network the county maintains includes 3,600 miles of pipe and 80,000 manholes. That last figure represents a sizable amount of annual maintenance; though manholes themselves are...
Cranes on Pittsburgh highway project
As a certain saying reminds us, functioning smoothly and efficiently requires the left hand to know what the right hand is doing. So imagine how critical it is for two cranes to work together seamlessly when combining efforts on a pick. Such was the case on a 13-mile phase of the colossal Southern...
Forth Bridge Queensferry Crossing under construction

Forth Bridge Queensferry Crossing under construction.

The Queensferry Crossing near Edinburgh, Scotland, is the longest cable-stayed bridge in the world at more than 8,500 ft. It is one of the largest infrastructure projects in Europe, and it benefited from advanced reinforcement planning in 3D provided by the engineers from Leonhardt, Andrä und...
Overlay Init