Modest declines expected in 2021 transportation construction market, according to ARTBA

December 11, 2020  |  Case Studies

The U.S. transportation construction market is expected to shrink 5.5 percent next year, driven primarily by the severe economic recession caused by the coronavirus pandemic, according to the American Road and Transportation Builders Association’s (ARTBA’s) annual forecast. Overall, the value of…
Read More
TRB webinar: Celebrating TRB’s centennial by exploring the future of transportation research

November 3, 2020  |  Case Studies

What is the future of transportation research and what is TRB’s role in that future? Learn from our panel of experts about how the scale and scope of TRB’s activities expanded steadily over the last 100 years, and what we might expect in the transportation field during the next 100 years. Join u…
Read More
Publishing opportunity: Geosynthetics experts invited to send case studies

November 2, 2020  |  Case Studies, News

Geosynthetics magazine is encouraging industry experts to submit innovative case studies and other news for publication consideration. Geosynthetics delivers technical information for engineers, specifiers, landscape architects, government agencies, academics and installers. This publishing opportun…
Read More
Ground improvements using geofoam: A case history

October 14, 2020  |  Case Studies

By Javaid M. Alvi, Ph.D., and Jahangir J. Kabir, Ph.D., P.E The project site is a triangular-shaped property located at the intersection of Raleigh Avenue and West Liberty Avenue in the Borough of Dormont, Allegheny County, Pa. (Figure 1). The site housed two Nissan buildings, one with a showroom at…
Read More
Members Only  
A geosynthetic wrap-face vegetated wall system

October 1, 2020  |  Case Studies, Features

For highway embankment construction  By Stanley M. Miller and Drew Loizeaux A recent creek enhancement project to facilitate the passage of bull trout in Pend Oreille County of northeastern Washington state required removal of a 6-foot (1.8-m) diameter concrete culvert (Figure 1), realignment o…
Read More
Members Only  
CCR landfill final cover test pad—Part 2

October 1, 2020  |  Case Studies, Features

By Nina J. Balsamo, John Massey-Norton, John R. Klamut, Terry Queen,Charles F. Straley and Mark R. Lehner An integrated drainage system (IDS) geomembrane, which provides both a low-permeability membrane and drainage space above the geomembrane, is being used in the final cover at a coal combustion r…
Read More
Members Only  
Reinforced embankments for the causeway for a North Wales bridge project

October 1, 2020  |  Case Studies, Features

By Patricia Guerra-Escobar  The Pont Briwet Project in Penrhyndeudraeth, North Wales, U.K., consisted of the replacement of a historic timber trestle bridge with a new 446-foot (136-m) long concrete viaduct and the upgrade of the approach road to the north and south of the crossing (Figure 1). …
Read More
Innovative geosynthetic solution saves 106-year-old Panama Canal structures

August 1, 2020  |  Case Studies, Features

By Tom Stephens and Nicolas Ruiz The Panama Canal opened for business 106 years ago and was hailed as the eighth wonder of the world and an engineering marvel. It has become the most consequential global waterway ever constructed. Since 1914, more than a million ships of all sizes have passed throug…
Read More
EPA finalizes revisions to the coal ash closure regulations, increases public access to information

July 30, 2020  |  Case Studies

On July 29, the U.S. Environmental Protection Agency (EPA) finalized several changes to the regulations for coal combustion residuals, known as CCR or coal ash, to implement the court’s vacatur of certain closure requirements as well as adding provisions that enhance the public’s access to infor…
Read More
High-strength geocell and geogrid hybrid reinforcement

June 1, 2020  |  Case Studies, Features

Compressor station gravel pad on soft subgrade By Sanat Pokharel, Timothy Yii, Marc Breault and Meisam Norouzi Infrastructure development in natural resources rich Alberta, Canada, often encounters very soft ground conditions that pose several construction and sustainability challenges to transporta…
Read More