TREC’s broad research program addresses complex transportation problems by drawing on multiple disciplines, including engineering, planning, economics and design, from across the Portland State University campus. Browse the featured projects below or 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

Tools for Gusset Plate Evaluation

Christopher Higgins
Peter Dusicka , Michael Scott
The collapse of the I-35W Bridge in Minneapolis, Minnesota has raised questions regarding the performance and possibly safety of steel truss bridges. The failure investigation indicated that the collapse was due to a design error in the gusset plates used to connect the truss members. The findings also recommend that evaluation of truss connections will be needed, which is a deviation from past practice where only members were considered. There are large numbers of steel truss bridge connecti... Read More

Calibrating the HSM Predictive Methods for Oregon Highways

Karen Dixon
Christopher Monsere
AASHTO, FHWA, and TRB have combined efforts to develop a document similar to the Highway Capacity Manual known as the Highway Safety Manual (HSM). This publication will be published by AASHTO and is expected to be used as a supporting document in the design and assessment of highway facilities in the United States. The manual is targeted for release in 2010; however, there may be a NCHRP Synthesis released in 2009 so that agencies can see the recommended procedures and know how to prepare f... Read More