Manhole Risers

Case Studies July 06, 2017
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...
Case Studies June 01, 2017
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...
Case Studies August 03, 2016
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...
Case Studies June 01, 2016
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...

A completed riser project in Grand Rapids, Mich.

Case Studies April 14, 2016
Founded in 1916, Rieth Riley Construction is a large paving firm, serving Indiana and Michigan with 30 asphalt plants. With that kind of paving volume, and a nearly century-long history, the firm has rigorously tested hundreds of infrastructure solutions, and the tools and techniques that make the...

Construction crew member adjusting concrete final grade on a manhole riser. 

Case Studies April 17, 2015
State Highway 183, from Euless to Dallas/Fort Worth, Texas, underwent a major reconstruction in 2014, a project totaling $1.6 billion. On projects of this size, even small changes can lead to a great deal of extra work, and such was the case when an unexpected grade change was required to correct...
Article May 14, 2008
“My history with adjustable risers is that they’ve been very successful,” said Chuck Swan, construction engineer for Norfolk, Va. “As long as the installer cleans out the rim properly, we’ve had no problems with them.” Swan oversees the repaving of about 30 lane-miles annually, and estimates that...
manhole riser
Case Studies
Chicago is the nation’s third most populated city, after New York and Los Angeles. And though it has a total of about 9,500 lane-miles, it ranks last of all major U.S. cities in terms of freeway miles per capita. This means Chicago’s paving contractors, such as Bigane Paving, are usually working on...
Manhole cover
Case Studies
Traditionally designed manhole covers or other street castings can contribute to problems such as bumpier streets, affecting the quality of life in cities for pedestrians, cyclists and vehicle occupants. The SELFLEVEL® access assembly by EJ is an innovative solution, with easy installation,...
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