TREC research addresses complex transportation problems by drawing on multiple disciplines, including engineering, planning, economics and design, from across the Portland State University campus. Use the search box at right to search for a specific project.
NOTE: If you're looking for projects from our partner campuses, use the NITC research search.
Research Highlights
Active Transportation Network Benefits Estimator | NCHRP Research Report 1149, Estimating Benefits of Closing Gaps in Active Transportation Networks: A Guide
Sarah Melling
Joe Broach
The Active Transportation Network Benefits Estimator was developed to support state and local DOTs in estimating the potential benefits of closing gaps in their active transportation network. The tool is based on the methodology presented in the NCHRP Research report 1149: Estimating Benefits of Closing Gaps in Active Transportation Networks (https://www.nationalacademies.org/publications/29332). Active transportation networks are an important part of the transportation system, they improve a...
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Bridge Pile Foundations Subjected to Liquefaction-Induced Lateral Spreading
Arash Khosravifar
The overall goal of this research is to improve the seismic safety and resiliency of highway bridges in the Pacific Northwest during earthquakes. Past earthquakes have shown that liquefaction-induced lateral spreading can be a major cause of collapse for pile foundations. Bridge engineers generally agree that pile foundations must be designed for: (a) lateral spreading loads caused by liquefaction of soils adjacent to piles, and (b) inertial loads during shaking resulting from the superstruct...
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