Case Studies

TxDOT end-of-queue warning system features two rumble strip arrays
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...
New York Expressway/Dyer Avenue Bridge re-decking
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...
ITD has automated winter road maintenance systems
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. “...
Retaining walls were used to hold back sandy slopes along roadway
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...
Sonoma County intersections are connected via a SCADA system
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...
Pipe sliding through existing culvert done without diverting roadway traffic
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...
Pennsylvania Turnpike tests temporary portable rumble strips
To improve both work-zone and worker safety, the Pennsylvania Turnpike Commission tested temporary portable rumble strips (TPRS, or rumble strips) in September and October of 2015.   The goal was to test the effectiveness of TPRS in short-term work zones. Specifically, to determine if TPRS would “…...
VDOT repairs culvert, avoids costly roadway rehabilitation with GCCM solution
As a result of periodic culvert inspections, the Virginia Department of Transportation (VDOT) identified an existing triple-barrel steel-plate culvert south of Richmond, Va., as requiring a repair. Since the roadway above the existing culvert had just been repaved and new guardrail had been...
Central Hudson Gas & Electric in New York State was working on the OR, EM & PX Line Project
Central Hudson Gas & Electric in New York State was working on the OR, EM & PX Line Project, performing several miles of line maintenance and repair. Seasonal rains saturated the ground and elevated the water level in the nearby Hudson River. Central Hudson Gas & Electric needed a way...
American Highway Products (AHP) Pivoted Turnbuckle Manhole Riser
Lower Allen Township Authority, a regional municipal sewer authority in Pennsylvania, provides service in Cumberland and York counties, west of the busy Harrisburg metro area. Superintendent David Ramsey deals with the same paving and manhole maintenance challenges as any municipal sewer system...
These retaining walls were part of $5.76 million Rybolt Rd Rehab Project
The intersection of Rybolt and Wesselman Roads in Green Township, Ohio, was notorious for its significant visibility problems and heavy traffic. With construction starting in 2014 on a new subdivision nearby, Hamilton County officials initiated plans to widen the intersection to allow for the...
ALL Cranes helped lift and set concrete segments on F.W. Cappelen Bridge
With thousands of bridge construction projects under its belt, and with the largest fleet of crawler cranes in North America, the ALL Family of Companies has become a trusted partner for complex jobs. Dawes Rigging & Crane Rental, ALL’s four-location presence in Wisconsin, is providing five big...
A rendering of the New NY Bridge
New York’s Tappan Zee Bridge is a vital component of the state’s infrastructure system. On average, it bears the load of 138,000 vehicles each day, helping commuters cross the Hudson River at one of its widest points; but the bridge, which opened to traffic in 1955, was originally designed to last...
An aerial view of Lane Construction's resurfacing work on I-64 in Virginia
Founded in 1890, Lane Construction Corporation is one of the ‘biggies’ in civil infrastructure contracting. The company regularly takes on, and successfully completes, projects ranging in scope from $15 million on up to $1.5 billion. With that much work completed over so many years, Lane...
BoardWalk Ramp installed at County Courthouse, March 15, 2016 (with dimensions added).

BoardWalk Ramp installed at County Courthouse, March 15, 2016 (with dimensions added).

Cleveland, Ohio, the county seat of Cuyahoga County, has made some news recently. The Cleveland Cavaliers won the NBA Championship, and the parade that followed, attended by about 1.3 million people, also made national news.     Since the Cavs won, the city’s equally beloved baseball team, the...
Hydration sets the curing process in motion
As the main U.S. highway along the East Coast, Interstate 95 is one of the busiest and most important in the country. Like many others, it requires constant maintenance and oversight that can be troublesome for many state departments of transportation. One such problem arose on the I-95 South...
Hot air balloons fly over Ledgestone Redi-Rock retaining wall
The Paseo Del Norte/I-25 Interchange is one of the busiest corridors in New Mexico, often producing major traffic congestion issues during rush hours. The city of Albuquerque needed a way to make it easier and safer to travel on the highways, and wanted to incorporate a pedestrian walkway and bike...
A Dawes crane lifts a steel beam on the base of the Baraboo bypass
In Sauk County, Wis., an hour northwest of Madison, the Baraboo Bypass off U.S. 12 is coming together—literally. The south section of the bypass will be 5.4 miles long and four lanes wide, splitting from U.S. 12 at Ski Hi Road in the city of Baraboo, proceeding northward. The north section of the...
AHP risers boast precise custom sizes to match finished pavement grade
Gray & Son, Inc. is a family-owned contracting firm in Maryland with roots going back to 1908. They are currently one of the biggest paving contractors serving Baltimore and the surrounding counties, and have a reputation for introducing state-of-the-art solutions that cost-effectively keep the...
Overlay Init