Practical Measures for Managing Chloride-Based Deicers
Chloride-based deicers continue to be the primary deicing chemical of choice due to the huge cost differential with non-chloride deicers, which generally cost 15 to 20 times more than regular…
Sustainable Design and Maintenance for Urban Freeway Roadsides
One of the greatest challenges to state transportation agencies is maintenance of roadsides along urban freeway corridors. In many cases plantings in such corridors are designed to be more ornamental…
Selecting plant species for roadside safety while supporting pollinator and stormwater functions
Survey of DOTs, wildlife scientists and landscape architects to summarize species that are valuable for roadside revegetation, pollinators and/or stormwater applications but are not likely to attract wildlife to the…
Design and Management of Road Crossings for Small Terrestrial Wildlife
Gather and summarize existing information on crossing structures and methods for monitoring use by small terrestrial mammals, reptiles and amphibians to develop a summary of available reports, plans and design…
National Synthesis of Successful Strategies for Managing Post-World War II Resources in Identification Surveys
This study would be a follow-up to the 2008 NCHRP study on post-World War II housing and specifically focus on identifying strategies employed by state DOTs to manage the exponential…
Deicing of Roadways Using Reclaimed Salt-rich Biochar Obtained from Roadside Halophytes
Every year more than 22 million tons of salt (primarily NaCl) and other de-icing agents are applied to U.S. roads to maintain safe driving conditions in inclement weather. These chemicals…
Assessing Water Contamination Levels from Bridge Deck Runoff in Virginia
Bridge maintenance along with traffic, weather, and other related activities are continuous sources of pollution for the water bodies under the bridge. In Virginia, where are more than 10,000 bridges,…
Develop tools and procedures to model impacts of near-road barriers on near-road pollutant concentrations
RESEARCH PROBLEM STATEMENT Interstate highway improvement projects that are deemed to have traffic noise impacts result in near-road barrier walls being constructed or expanded. Although the barriers are designed and…
Noise Barrier Materials and Maintenance Costs
Noise Barrier Maintenance Costs: the scope of the project consists of surveying state DOTs to determine the annual (or periodic) maintenance costs of noise barriers (by material type). The results…
Methods for State DOTs to Reduce Greenhouse Gas Emissions from the Transportation
A number of states have established goals for reducing GHG emissions from the transportation sector but many suggested changes are outside the jurisdiction of State DOTs (efficiency standards, land-use, etc.). …