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Center for Environmental Excellence | AASHTO
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Mortality Effects of Continuous Concrete Highway Median Barriers on Wildlife

By Amber GarnettMay 7, 2021Leave a comment

TERI Administrator Note (March 2008) Research Completed: HIGHWAY MEDIAN IMPACTS ON WILDLIFE MOVEMENT AND MORTALITY – State of the Practice Survey and Gap Analysis, CalTrans, 2006 http://www.dot.ca.gov/newtech/researchreports/reports/2006/median_barrier_final_report.pdf Problem Statement: Along…

Evaluation Of Culvert Designs For Juvenile Salmonid Passage

By Amber GarnettMay 7, 2021Leave a comment

Problem Statement: In transportation programs, there is a need to address situations that may affect salmon and their habitats under the Endangered Species Act (ESA). Culverts can block upstream passage…

Roadside Animal Detection Systems Test-bed

By Amber GarnettMay 7, 2021Leave a comment

Problem: Animal vehicle collisions are a challenge from the safety and ecological standpoint. Many current solutions are expensive (large crossing structures), potentially ineffective (static warning signs), or potentially ecologically damaging…

Effectiveness of Wildlife Habitat Linkage as a Tool for Offsetting Effects of Habitat Loss and Fragmentation

By Amber GarnettMay 7, 2021Leave a comment

Problem Statement: Over the last decade natural resource agencies and transportation agencies have become increasingly aware of the effects that highway and railroad systems have on wildlife and fisheries. The…

Assessment of Environmental Impacts of Products/Chemicals Used in Maintenance of Highways

By Amber GarnettMay 7, 2021Leave a comment

Problem Statement:   To maintain the highway infrastructure, right-of-way and their functions, many operations including snow and ice control, paving/patching, surface sealing, traffic marking and vegetation management may use chemical…

Develop Environmentally Sensitive Designs for New and Retrofitted DOT Highway Maintenance Facilities

By Amber GarnettMay 7, 2021Leave a comment

Problem Statement: Many facilities required in transportation operations and maintenance have evolved to the present by expansion, modification, and adaptation of design and materials common to several years ago. At…

Case Studies of ‘Green’ Guardrails and Naturalizing of Median Strips to Test the Impact on Traffic Safety and Environmental Quality

By Amber GarnettMay 7, 2021Leave a comment

Predicting Soil Loss on Highway Systems Based on a Revised Universal Soil Loss Equation (RUSLE) Specific to Highway Site Conditions

By Amber GarnettMay 7, 2021Leave a comment

Problem Statement: Currently there is no basic methodology to predict soil loss or recommend erosion and sediment control measures specifically for highway projects. Lack of a methodology impairs the ability…

Onsite and Offsite Effects of Converting Gravel or Native Roads to Pavement

By Amber GarnettMay 7, 2021Leave a comment

Problem Statement: When a gravel or native-surfaced road is paved, we do not know the effects of increased offsite soil erosion due to increase surface runoff.   Proposed Research: It…

Synthesis of State Department of Transportation (DOT) Procedures for Source Control and Verification of Recycled Construction Materials

By Amber GarnettMay 7, 2021Leave a comment

TERI Database Administrator Notes.  Not recommended at present time by 2009 Natural Systems Subcommittee. Problem Statement: State DOTs are increasingly involved in making decisions regarding the reuse of wastes and…

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