Case Studies
Redi-Rock Limestone texture retaining walls
The Lumpkin Road Reconstruction Project should have been relatively routine, but the deeper Houston’s Memorial City Redevelopment Authority dug, the more problems they encountered.
With design parameters stacking up on each other, meeting the tight budget and even tighter schedule proved...
More than 100 years after initial construction, a textile plant in the Southeast serving the booming automotive industry discovered it needed to rehabilitate portions of the structure supporting the main manufacturing floor. Years of exposure to the hot, humid manufacturing environment and...
A stretch of U.S. Highway 52 is getting a new bridge to span the Mississippi River between Savanna, Ill., and Sabula, Iowa. The existing truss bridge was built back in 1932, nearly a decade before the country got involved in World War II, and has exceeded its useful life. It will be replaced with a...
The Maine Turnpike Authority is a quasi-state agency that operates a 109-mile toll highway (I-95) that begins in Kittery (located on the state’s border with New Hampshire) and ends in Augusta, the state’s capital. The first section of the Maine Turnpike opened in 1947, making it the second...
The rumble strips were set out in a dual three-strip array.
Last October, Shelly & Sands, a prime highway contractor, installed RoadQuake 2F Temporary Portable Rumble Strip (TPRS) arrays in two Ohio work zones. The installation, conducted in partnership with Ohio Department of Transportation (ODOT) and Ohio Contractors Association (OCA), tested the...
Michigan’s Department of Transportation (MDOT) had been using wet reflective optics in its permanent pavement markings on certain larger construction projects for years when officials decided to establish a standard to require full wet reflectivity in its work zones. MDOT wanted to increase safety...
With a population of about 320,000, St. Louis is the 60th-largest city in the United States. But due to an unusual arrangement, St. Louis, its metro area (which has a population of approximately three million), and the surrounding St. Louis County (which has a population of approximately one...
In January 2016, the Colorado Department of Transportation (CDOT) placed a project for public bid which included repair of several large-diameter highway culverts and a single box culvert. CDOT had specified a spray-applied culvert lining under a special revision to Section 603 of their standard...
The I-465/I-65 highway interchange project is a major undertaking in Indianapolis that includes $19.6 million in bridge replacements. With jobs this big, having the right-size, right-price equipment is vital to keeping budgets on track without sacrificing quality and safety. This is precisely why...
Fairhope is a small city, just 15,000 residents, situated on the cliffs and shoreline of Mobile Bay in Alabama’s Gulf Coast. It can seem like Fairhope is a long way from anywhere, but people seem to like it—the city has been named one of the best small towns in the South by Southern Living magazine...
IDOT TRS developmental layout specification (as shown as Figure 4 in the Report).
The Center for Transportation Research and Education (CTRE) at Iowa State University develops methods and technologies to improve transportation safety and reliability.
Last month, CTRE issued a Final Report titled “Field Measurements on the Effect of Temporary Rumble Strips in Work Zone Flagging...
Pennsylvania Department of Transportation (PennDOT) District 1 is responsible for over 3,600 road miles and more than 2,000 bridges. Thanks to severe winter weather and lake effect snow conditions, this region is perhaps the most challenging area for maintenance of all the PennDOT districts. The...
During the fall of 2016, a particularly bad storm hit a shoreline road in Gisborne, New Zealand. Monstrous waves slammed into the shoreline slope, which eroded away due to oversaturation and lack of foundational support. The erosion washed away part of the slope and took a portion of the road with...
The Teodoro Moscoso Bridge is the longest bridge spanning a body of water in Puerto Rico. The four-lane, 1.4-mile-long toll bridge spans the San José Lagoon, connecting the cities of San Juan and Carolina while also serving as the main entrance to the Luis Munoz Marin International Airport. The...
Winters in the Midwest can be harsh, especially on the roads. As roads age and are exposed to the elements, the striping that delineates lanes tends to fade first. Creating a systematic approach to maintaining road markings is important, but many cities overlook this and may not budget for it. In...
In July 2000, the Illinois Department of Transportation (IDOT) sent a letter to Scott Fier, president of American Highway Products, approving the use of his company’s adjustable riser rings when raising utility and manhole rims to grade after pavement lifts. Formal language describing acceptable...
Widening a highway includes widening and replacing bridges, and for that, cranes are in high demand. Florida’s I-4 corridor, an east-west expressway that connects Daytona with Tampa, is undergoing an ambitious five-year, $2.3 billion widening project that will expand the expressway from four lanes...
The Gulfport-Biloxi International Airport in Gulfport, Miss., was undertaking an airport improvement project that included repairing, repaving, and adding new runways and taxiways. As part of this improvement project, the airport discovered several aging and deteriorating drainage culverts under...
The Evergreen Point Floating Bridge, also known as the 520 Bridge or its official name of the Governor Albert D. Rosellini Bridge, spans Lake Washington from Seattle to Bellevue and was replaced in 2016. The new bridge is certified by the Guinness Book of World Records as the longest and widest...
Green Diamond Resource Co. is a fifth-generation, family-owned forest products company—a major timber supplier of power poles and various specialty products, as well as logs for sawmills.
Based in Shelton, Wash., the company relies on its efficiency in growing and harvesting timber on 1 million...
