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Case Studies

Accelerated construction from 17 to 13 days was achieved by the contractor’s hour-by-hour construction plan and 24-hour work schedule.

The Rte. 6 Bridge Deck Replacement Project Team took a hard look at a range of traffic-mitigation scenarios from full closure to a one-lane road with alternating traffic. After assessing cost of delay up to $80,000 per day, an addition of up to 60 minutes of travel time and potential for 3- to 4-...

An application vehicle at MRDC prepares for a run.

MRDC Operations Corp. (MRDC), a private enterprise responsible for maintaining and rehabilitating a 121-mile highway connecting the cities of Fredericton and Moncton in New Brunswick, Canada, began manufacturing and using salt brine several years ago for pre-wetting road salt during deicing...

Using a National IPA (NIPA) contract, Sparta Township, N.J., purchased a pair of new wheel loaders.

After working hours of overtime cleaning up after Hurricane Sandy in 2012, it became clear that the Sparta Township, N.J., Department of Public Works needed to replace its 1994 wheel loader to help keep roadways clear of debris, leaves and snow.   With the department doing more with less (staff was...

 
Abraxus Salt uses the deicing product on sidewalks, roads and parking lots for a number of commercial businesses

After more than 40 years in the snowfighting industry, Frank Dedon has witnessed his share of winter maintenance products. Experimenting with a variety of deicers over the years, including molasses-treated salt and salt mixed with various liquids, Dedon found many deicing products to be ineffective...

In total, the project required 7,800 blocks, equaling 44,850 sq ft. Trains made their first run on the line in late 2013.

The goal of a recent Canadian National (CN) Railway and Montreal Metro project was to eliminate an at-grade crossing where the CN rail line crossed over the Société de Transport de Montréal (STM) light commuter Metro line. These two lines ran through a narrow corridor with several sections of...

Phase I work involved the erection of four girder lines for a three-span section, four girder lines for a single-span section and 31 precast concrete beams.

The time had come. The Illinois Department of Transportation (IDOT) had found the 55-year-old Ohio Street feeder, part of Chicago’s Kennedy Expressway, in need of complete replacement. The interchange had to be demolished and a new bridge constructed in a complex, $16.5 million multiphase project...

The Madera County Road Department opted for slip-lining over dig and replace due largely to the depth of fill over the culvert and limited options for rerouting of traffic.

Madera County in California’s central valley had a problem faced by hundreds of municipalities across the country: aging, deteriorated culverts on the verge of failure.   Considering his best options, Madera Road Commissioner Bradley Phillips turned to Snap-Tite, and his own crew, to begin the...

Hyvinkaan Tieluiska is the finishing contractor on a major highway project in Finland.

Hyvinkaan Tieluiska is the finishing contractor on a major highway project in Finland, designed to improve the Helsinki ring road junction with the highway to Tampere—the country’s second-largest city.   It is critical that the job be completed on time, meaning the contractor needs strong,...

For I-30, project plans also included temporary portable rumble strips.

Arkansas Highway and Transportation Department (AHTD) Project BB0306, the Sheppard to Highway 278 project, entailed undercutting the inside shoulder and overlaying an asphalt surface on I-30. Earlier this summer, AHTD set up work zones and lane closures that ran from mile marker 22.4 to 29.5 on I-...
In October 2012, Lynchburg College, a small, private school in central Virginia, announced plans for the expansion and renovation of their student center. The $12 million project would expand the existing 42,000-sq-ft building by 30,000 sq ft, as well as renovate 8,000 sq ft of the existing center...
The Challenge   The Carroll Canyon Road Bridge crosses I-805 just 20 miles north of the Mexican/U.S. border of Otay Mesa — California’s busiest commercial border crossing, facilitating 1.4 million truck crossings each year. As just one phase of an area-wide, $607 million, four-phase project, the...

A Cobblestone texture was required for retaining walls in the parking lot and the emergency entrance; the former was 9 ft high and the latter was 15 ft high.

When the Maine General Hospital started construction on the Alfond Center for Health, they had some unique challenges to face.   The hilly site required 23,000 sq ft of retaining walls to create level areas for buildings and roads. “There was 50 ft of grade difference across the site. This required...
Road departure devices
The city of Varenne, Québec, is on a mission to improve the safety of Canadian highways while saving taxpayer dollars. After recently completing a bridge replacement project on Autoroute 30, the city of Varenne decided to upgrade already-installed road departure devices.   Many contractors,...
Winters can be brutal in Minnesota—especially in heavily populated areas like the Twin Cities of Minneapolis and St. Paul. Keeping roads clear of ice and snow is an essential task of public works officials, and Hennepin County has developed an arsenal of winter maintenance tools to help create...
Washburn County (Wis.) Highway Department Commissioner Jon Johnson, P.E., oversees 200 miles of paved roads and offers guidance to area townships. Each year a number of these roads come closer to the end of their life cycle—a common situation nationwide, and in the state of Wisconsin, with the...
All Crane Case Alert 1

From the deck of a barge, a Link-Belt carefully fishes the floating pieces out by their cables and places them on the riverbank.

In Cleveland, July’s last fireworks display will bring the house down. Or, in this case, the massive 55-year-old Innerbelt bridge that for a generation connected the city to its western neighborhoods. For now, crews are in the final stages of months of mechanical deconstruction work that, when...
AHP Case of the Week

The risers are easy to install prior to paving—inlet grates are removed, the original utility frames are cleaned and the steel risers are slipped into the frame.

Asphalt overlays are usually routine exercises. They are important, sure, and hard to do well, but the contractors, owners and designers of these projects tend to be very experienced, and the technical challenges are well-understood. Put another way, there are not too many surprises on an overlay...
EJ Case Study
A section of roadway in Huntington, N.Y., was prone to flooding. Officials with the New York State Department of Transportation (NYSDOT) had a plan to eliminate the significant ponding, but they had difficulty finding a partner to supply the grates and frames for their “extreme” trench-system...
When the Four Feathers Winery near Kennewick, Wash., began construction on a new production facility, they had a unique design in mind. The topography of the site allowed the company to design a system that utilized gravity to help improve the process of moving grapes through the facility.   The...
Sometimes less is more for roadside managers trying to keep weeds and other undesirable vegetation along roadsides under control.   As a district roadside manager for the Mississippi Department of Transportation (MDOT), William Wigley has found that saying to be true, as he employs flexible and...

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