Major and visible effects-such as shoreline alteration, reduced connection to adjacent upland, sediment filling-in, eutrophication, reduced oxygen levels, and altered fish populations-are attributable to roads altering coastal, lake, reservoir, pond,…
Algal blooms and excessive plant growth commonly plague lacustrine systems due to the buildup of phosphorus. While phosphorus is not a principal component in highway runoff, there may be areas…
In order to make the best choices regarding the planning and development of highway capacity, transportation decision-makers need a wide range of data. To conduct impact assessment, for example, agencies…
A new decision making process is needed to underpin the system planning and project development process, one that is equipped to consider multi-modal and operations solutions that minimize adverse environmental…
TERI Administrator Note (June 2007): Funded as NCHRP Project 25-25, Task 39, “Improving Project Environmental Cost Estimates.” Project completion date: October 2008. http://www.trb.org/TRBNet/ProjectDisplay.asp?ProjectID=1657 Improvement of cost estimating practices and the…
Because hydrologic conditions around corridors are the result of transportation-system design processes, the major patterns of road hydrology are well documented. It is generally clear, for example, how highway hydrology…
This research project will build on research grounded in environmental science to identify and evaluate approaches for improving water quality and watershed performance and to reduce habitat fragmentation and its…
TERI Administrator Note (Feb 2009) Pending project: NCHRP 8-36 (86) Corridor Approaches to Integrating Land Transportation and Land Use Several states and metropolitan regions have implemented programs that combine land…
The environmental and community consequences of changes in freight movement patterns in the US may be significant, but are currently unknown. Strategies are needed in response to emerging freight movement…
TERI Database Administrator Notes: Not recommended at present time by 2009 Air Quality Subcommittee. The secondary effects of highway capacity expansion on development and land use patterns are often used…