Case Studies

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...
In June 2015, the American Society of Civil Engineers (ASCE) published "Effectiveness of Temporary Rumble Strips in Alerting Motorists in Short-Term Surveying Work Zones," by Hong Yang, Ph.D, Kann Ozbay, Ph.D, and Bekir Bartin. (The paper is available from the ASCE Library for a fee).   In their...
In June of 2016, the South Carolina Department of Transportation (SCDOT) was in the midst of building a new interchange at the intersection of I-85/I-385 in Greenville, S.C. During construction, severe localized spalling was found on the cover concrete of one column of a two-column pier supporting...
The National Transportation Safety Board (NTSB) investigated an end-of-queue work-zone crash that occurred in Tennessee in June 2015. They conducted a hearing on October 4, 2016, to discuss their findings and will publish their final report sometime in November.   NTSB did issue a synopsis of the...
All roadway and bridge construction or rehabilitation performed within New York City has the potential to create a traffic gridlock nightmare. This is especially true when the work being performed is in very close proximity to a major arterial route linking Manhattan to an adjacent borough or the...
Until recently, Idaho Transportation Department (ITD) snowplow truck operators manually completed a work order documenting their spreading activities after each shift. At times, however, the orders were too generalized and lacked details needed by ITD fleet managers for analyzing operations. “...
For several years, the busy intersection of Lafranier Road and South Airport Road in Traverse City, Mich., near the Cherry Capital Airport was also one of the most dangerous. The steep, 12% grade at the end of Lafranier Road made it difficult for drivers to stop as they approached the South Airport...
Situated between San Francisco Bay and Northern California, Sonoma County is home to almost half a million residents. The county is over 1500 sq miles of natural resources, wineries and tourist destinations. Over 26 departments provide a full range of services to the community.   The county manages...
Interstate 95 passes through more states than any other interstate highway—15 total from New England to Florida—making it the longest north-south interstate in North America. A major stretch of Florida’s leg of I-95 is undergoing a multiyear, multimillion-dollar expansion project to widen it from...
Last August, the Utah Department of Transportation (UDOT) released its long-range plan to address transportation needs in rural Utah over the next 25 years. The plan focused primarily on rural areas of the state and identified projects presumed to strengthen the state’s economy and enhance the...
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