Case Studies

Built circa 1921, Pittsburgh’s Beechwood Boulevard Bridge, known locally as the Greenfield Bridge, underwent rehabilitation in the 1980s. By 2013, plans to replace the aging structure were underway. The old bridge was demolished, and the erection of the new bridge began in early 2016. Reaching...
In the report titled “Development of Temporary Rumble Strip Specifications,” commissioned by the Kansas Department of Transportation (KDOT), authors Steven D. Schrock, Ph.D., P.E., F.ITE, Vishal Sarikonda and Eric J. Fitzsimmons, Ph.D. add significantly to the body of knowledge of temporary rumble...
Designed to meet the needs of this century, the New NY Bridge is built to last well into the next. To assure the longevity of the massive concrete structure, engineers and builders have added substantial precast concrete elements into the design. Bearing the load on the heavily trafficked road and...
The work of building and maintaining America’s roads and bridges relies heavily on the effective management of traffic, which includes limiting proximities among motorists, workers and equipment in construction zones.   A Federal Highway Administration (FHA) analysis of Bureau of Labor Statistics...
All great visions have to start somewhere. This one began with over 3 miles of paved multi-purpose trail winding through the scenic Clear Creek Canyon near Denver.   Installing the retaining walls was no easy task, as the terrain includes steep slopes, flooding issues along the river, active...
The North Carolina Department of Transportation (NCDOT) Bridge Maintenance Division 6 had a major erosion problem at the bridge piles underneath I-95 at Highway 87 in Cumberland County, N.C. The bridge deck above was leaking water at the joint, cascading down and eroding the slope that protects the...
Shortly after 2010, the streets of North Port, Fla. had fallen into severe disrepair—with increasingly costly maintenance.   On Nov. 6, 2012, a referendum passed authorizing the city to obtain a bond up to $46 million to upgrade substandard roads within three years.   The city promoted the project...
Central Florida’s Interstate 4 (I-4) highway is undergoing a multiyear, $2.3 billion rehabilitation project along a 21-mile stretch in Orange and Seminole counties. Originally completed in 1965, the “Orlando Expressway” has received much more traffic than it was originally meant to handle. Dubbed “...
Many corrugated metal pipe (CMP) culverts across the country will eventually experience rusting, corrosion or some form of deterioration. In the town of Ketchikan, Alaska, a 48-in. CMP culvert that ran underneath a busy two-lane road was experiencing extreme deterioration so severe that large holes...

The retaining wall creates a safe place for truck drivers to chain-up their tiers during snowy weather

The Challenge: When it snows in Vail, Colorado, it’s a skier’s dream—but for drivers, especially of trucks maneuvering steep mountain roads, it can be treacherous. To make things safer, the Colorado Department of Transportation (CDOT) wanted to widen I-70 at both sides of mountain pass locations...
Like many cities and rural communities, the city of Bel Aire, Kan., located just north of Wichita, is experiencing increased traffic growth both in volume and load. 45th Street is one of the main east-west roads through the city and connects two minor arterial roadways. The asphalt street was so...
The Virginia Department of Transportation (VDOT) upgraded an existing Road Systems Inc. (RSI) NCHRP 350-compliant SKT terminal with RSI’s new MSKT, which is MASH Test Level 3-compliant. This installation was on a busy stretch of road at a left exit off of I-64 leading to I-95 just north of Richmond...
In Baker City, Ore., two corrugated metal pipe (CMP) culverts ran underneath a two-way road. Like many of these pipe systems across the country, these two CMP culverts were rusting and deteriorating at a rapid rate. Bradley Payton, Baker City’s transportation maintenance manager, was charged with...
Yellow Creek, a tributary of the Cuyahoga River, runs through Copley, Ohio, a small township near Akron. The creek effectively divided two communities; that is, until the developer of one decided to build a bridge. In September 2016, a large-capacity all-terrain crane from ALL Erection & Crane...
If you have ever visited Chicago, chances are you have driven on I-90. It is a major thoroughfare through town and of course that means any road/bridge repairs, let alone restorations, require advanced planning, teamwork and the right equipment to keep everything on schedule. Currently a large...
The Massachusetts Department of Transportation (MassDOT) tested PSS RoadQuake 2F Temporary Portable Rumble Strip (TPRS) during the week of Oct. 31, 2016. MassDOT wanted to test the product in a live work zone, as part of their approval process.       MassDOT conducted the tests to resolve, in live...
The old wooden bridges on both Ezell Road and Overhead Bridge Road in Spartanburg County, S.C., were in need of replacement. The load ratings on both bridges had been decreased due to their deficient SD ratings. These single-lane structures had served the citizens of Chesnee in Spartanburg County...
The El Paso Valley in Texas has a history of irrigation dating back to the 1800s, ultimately leading to the creation of the El Paso County Water Improvement District, headquartered in Clint. The district provides water and controls runoff for 69,000 acres of land in the vicinity of the Rio Grande...
Minimizing the risk of injury to personnel while maintaining highly productive work environments in heavy traffic areas is a primary challenge associated with the development and maintenance of America’s roads and highways.    Becco Contractors Inc., a Tulsa-based civil construction company,...
When a project requires multiple grade changes, the details can quickly become complicated. Construction time and costs can increase exponentially if the right solution is not provided. K. J. Beamish Construction Co. was tasked with reconstructing a section of Bathurst Street for the Regional...
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