The Institute for Transportation at Iowa State University has released a report that evaluates the effects of coupling on A-walls. A-walls are retaining structures composed of regularly spaced deep foundation elements battered in opposing directions and connected through a grade beam to mitigate movements of a slope or embankment.

TRB’s Transportation Research Record: Journal of the Transportation Research Board has released 12 early access papers addressing geotechnology, including: A Process for Optimizing Gradation of Marginal Backfill of Mechanically Stabilized Earth Walls to Achieve Acceptable Resistivity ( link ) Pullout Behavior of Steel Mechanically Stabilized Earth Reinforcements ( link ) Soil–Geosynthetic Inter...

The Minnesota Department of Transportation (MnDOT) has released a report that presents the results of several rock specimens tested under uniaxial and triaxial compression. Information from these tests may be used to expand the MnDOT database of rock properties and allow for improved designs.

TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 519: The Renewal of Stormwater Systems Using Trenchless Technologies summarizes technologies used for the renewal of stormwater systems, including new, emerging, and underutilized trenchless methods, and identifies future research needs. Both trenchless replacement and trenchless renewal methods can reduce negative impacts as...

TRB's Transportation Research Record: Journal of the Transportation Research Board has released more than 200 papers from the 2018 TRB Annual Meeting. Enhancements to the journal include:  Articles published much closer to final acceptance A new user interface for the journal Article-level metrics  Full-text HTML to enhance discovery of the research Interactive proof markup for author...

The Center for Transportation Research at the University of Texas at Austin has released a report that evaluates soil-geosynthetic interaction under small displacements. The goal of this research is to implement an analytical model and testing procedure for selection of geosynthetic materials for base-stabilization of roadways subjected to environmental loads.

The U.S. Federal Highway Administration has released a report that evaluates the Geosynthetic Reinforced Soil-Integrated Bridge System program (GRS-IBS). This evaluation focuses on research topic selection, early research development, and deployers’ decisions to adopt GRS-IBS.

To keep pace with accelerating rate of research distribution, the Transportation Research Record: Journal of the Transportation Research Board is now publishing articles as soon as they are finalized. The latest papers to be published are as follows: Use of a Laser Diffractometer to Obtain the Particle Size Distribution of Fine-Grained Soils Interstate Speed Profiles Conditioning and Testing Pr...

TRB's E-Circular 230: Culverts and Soil–Structure Interaction: Fifty Years of Change and a Twenty-Year Projection summarizes the presentations from the TRB 93rd Annual Meeting on January 14, 2014 in Washington, D.C. In the past 40 to 50 years have seen significant changes in the pipe industry in terms of materials used, structure sizes, shapes, and joint capabilities. Design methodologies ...

The Minnesota Department of Transportation has released a report that analyzes the areas in Minnesota susceptible to slope failure using state-wide available data. The objective of this research was to determine whether it would be possible to provide slope-failure susceptibility mapping that could be used by local road and highway officials to understand where slope failure may occur.