Using geosynthetics to reinforce pavements is examined in Accelerated Load Testing of Geosynthetic Base Reinforced/Stabilized Unpaved and Pavement Test Sections , a report from the Louisiana Department of Transportation and Development. Specifically, this report evaluates the benefits of using geosynthetics to reinforce or stabilize base aggregate layer and subgrade in pavements under repeated ...

Roadside ditches enhanced with iron are examined in Iron-Enhanced Swale Ditch Checks for Phosphorus Retention , a report from the Minnesota Department of Transportation. Iron-enhanced ditches may improve net phosphate retention through roadside swales.

Global business and tourism depend heavily on the efficient operation of airports and movement of passengers, baggage, and cargo across many areas. With increasing demand and connectivity requirements for airports comes the need for more sophisticated simulation and modeling tools to validate design assumptions. Furthermore, airport design and planning decisions have significant impacts on poli...

Slope vulnerability is assessed in M nDOT Slope Vulnerability Assessments Phase 2 , a report from the Minnesota Department of Transportation. This report outlines the methods and results of this project including the new landforms, geomorphic processes, and causative factors influencing slope failures in this part of the state. It is a continuation of the first phase of the project.

The risk of slope failure along state highways around Minnesota is analyzed in MnDOT Slope Vulnerability Assessments Phase 2 , a report from the Minnesota Department of Transportation. Minnesota’s climate, geomorphology, and steep terrain along rivers has the potential to increase the incidence of slope failures such as rockfalls and landslides. This report is a continuation of the Phase 1 report.

TRB’s Technical Activities Division has released Transportation Research Circular E-C248: 12th International Conference on Low-Volume Roads, highlighting topics including road surfaces, geotechnology, cold regions and climate change, pavement management, planning and economics, unpaved roads management, geosynthetics in low-volume roads, drainage and stream crossings, climate change resiliency...

Installation and removal of sheet pile walls are investigated in Effect of Proximity of Sheet Pile Walls on the Apparent Capacity of Driven Displacement Piles, Phase 2 , a report from the Florida Department of Transportation. Phase 1 of this project developed a methodology for assessing the proximity of sheet pile walls on the load capacity of piles driven into granular materials. This phase ex...

The World Road Association (PIARC) has released a report that outlines current rules and practices for earthworks management. This manual includes information about design of materials and structures, executions and controls, and environmental aspects, including those related to climate change. The report is available for no fee after logging onto the site.

The Florida Department of Transportation has released a report that investigates Florida rock index properties by establishing correlations from rock index properties to conventional strength results. The goals of this report are to develop strength envelopes for both compression and extension loading and to develop stress-strain and volumetric strain models for Florida carbonate rock.

TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 532: Seismic Design of Non-Conventional Bridges documents seismic design approaches and criteria used for “non-conventional” bridges, such as long-span cable-supported bridges, bridges with truss tower substructures, and arch bridges. Design of conventional bridges for seismic demands in the United States is based on one of t...