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News Release: PBOT breaks ground on the SW Naito Parkway Improvement Project, funded by Fixing Our Streets, bringing significant improvements to major downtown gateway

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The project will repave and reconstruct SW Naito Parkway between I-405 and SW Lincoln Street, add new traffic signals, and create a two-way separated pedestrian and bike path between SW Harrison and Clay streets.

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A rendering of the future SW Naito Parkway between I-405 and SW Jefferson Street, showing the new mid-block pedestrian crossing between SW Harrison and Clay streets. Illustration by PBOT.
A rendering of the future SW Naito Parkway between I-405 and SW Jefferson Street, showing the new mid-block pedestrian crossing between SW Harrison and Clay streets. Illustration by PBOT.

(July 31, 2020) Portland’s SW Naito Parkway is getting a major facelift beginning Monday, August 3, with significant improvements stretching from I-405 to SW Jefferson Street and the Hawthorne Bridge onramp.

From I-405 to SW Harrison, the street will be repaired and repaved. Beginning at SW Harrison and extending north to SW Jefferson, SW Naito will be completely rebuilt from the road base on up. Additionally, the project will construct a two-way separated off-street path between SW Harrison and SW Clay Street for pedestrians and people biking.

As construction begins, Portlanders can expect significant delays travelling on SW Naito. Beginning the week of August 3, people driving can expect one lane in each direction of SW Naito to be closed from Market to Madison streets. Crews will be closing the innermost lane in each direction to allow them to safely perform work on the center median.

The lane closures for this construction phase are scheduled to continue through August. During this period, crews will install temporary traffic signals to allow for bidirectional traffic on the east side of Naito. This will create a safe work zone for crews to work on demolition and trenching on the west side of the street to prepare for future phases of construction.

The project includes safety and efficiency improvements for all travel modes, with significant upgrades to the signal infrastructure along this stretch of SW Naito Parkway to improve the safety and efficiency for pedestrians and people driving and biking. Among the improvements are traffic signal upgrades and SW Market and Clay streets, a new pedestrian signal midblock between SW Harrison and SW Clay Street, and a full pedestrian signal at SW Jefferson with connections to Tom McCall Waterfront Park. In partnership with Multnomah County, PBOT will also be installing a new traffic signal on the Hawthorne Bridge onramp to improve traffic operations for vehicles approaching from SW Naito Parkway. Watch a video fly-through of the final project design here: https://www.youtube.com/watch?v=0OYsVPOXpGg.

Traffic modeling of the project shows improved operation for the whole corridor. The new traffic signals and updated timing will help move more people and vehicles through the corridor in less time. These improvements will increase safety and efficiency while decreasing conflicts between road users.

Learn more and sign up construction updates on the SW Naito Parkway Improvement Project - I-405 to SW Jefferson website. This work is weather dependent and subject to change.

The SW Naito Parkway Improvement Project is funded with $1,600,000 from Fixing our Streets, with other funding from Transportation System Development Charges and other sources. Fixing Our Streets funds are also leveraging additional Oregon Department of Transportation funding.

This project was paid for by Fixing Our Streets

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