Skip to main content

Study: Wider Highways Won't Reduce Congestion

Widening highways won't reduce congestion—that's the conclusion of a report paid for by the state agency proposing several highway widening projects in Oregon.

1 minute read

March 13, 2018, 7:00 AM PDT

By James Brasuell @CasualBrasuell


Josemaria Toscano / Shutterstock

A new report (pdf) by Montreal-based engineering firm WSP has bad news for anyone who advocates for highway widening as a cure for congestion.

Dirk VanderHart shares news of the report by WSP, which was under contract with the Oregon Department of Transportation (ODOT) to analyze the effects of proposed highway widening projects in the Portland area. According to the report, "none of the dozen highway-widening projects that are currently being planned in and around Portland by state officials would be enough in coming years to stem the increasing congestion choking Portland highways."

VanderHart notes that is a surprising finding for a report commissioned by the Oregon Department of Transportation—"a relentless champion of highway-widening projects." In fact, it sounds a lot more like the talking points of the vocal opposition to the plan to widen I-5 in the Rose Quarter of Portland.

Wednesday, March 7, 2018 in The Portland Mercury

Feds Toss the Environmental Assessment for Portland Controversial Freeway Widening Project

It's back to the drawing board for the I-5 Rose Quarter Improvement Project.

January 20, 2022 - The Oregonian

Environmental Assessment for I-5 Improvement Project in Portland Promises Air, Traffic, Safety Benefits

The environmental assessment for the I-5 Rose Quarter Improvement Project, released on February 15, 2019, promises to be controversial.

February 17, 2019 - The Oregonian

Plan to Widen I-5 in Portland Loses Critical Local Support

The I-5 Rose Quarter project has proven controversial throughout the study and planning process, and now it's losing key local political support.

July 5, 2020 - The Oregonian

Coming Soon to Ohio: The Largest Agrivoltaic Farm in the US

The ambitious 6,000-acre project will combine an 800-watt solar farm with crop and livestock production.

April 24, 2024 - Columbus Dispatch

Pennsylvania Mall Conversion Bill Passes House

If passed, the bill would promote the adaptive reuse of defunct commercial buildings.

April 18, 2024 - Central Penn Business Journal

U.S. Supreme Court: California's Impact Fees May Violate Takings Clause

A California property owner took El Dorado County to state court after paying a traffic impact fee he felt was exorbitant. He lost in trial court, appellate court, and the California Supreme Court denied review. Then the U.S. Supreme Court acted.

April 18, 2024 - Los Angeles Times

Planning Director

Licking County

Senior Planner

Barrett Planning Group LLC

News from HUD User

HUD's Office of Policy Development and Research

Call for Speakers

Mpact Transit + Community

New Updates on PD&R Edge

HUD's Office of Policy Development and Research

Attention Professional Planners: Join Our Survey on Urban Planning Engagement!

Tufts University, Department of Urban and Environmental Policy & Planning

Comprehensive Plan Update

City of Universal City TX

Urban Design for Planners 1: Software Tools

This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.

Planning for Universal Design

Learn the tools for implementing Universal Design in planning regulations.