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The City of Portland, Oregon

Portland Bureau of Transportation

Phone: 503-823-5185

Fax: 503-823-7576

1120 SW Fifth Ave, Suite 1331, Portland, OR 97204

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NW 20th Avenue LID: Reconnecting Slabtown and NW Portland

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This project will reconnect the Slabtown neighborhood and NW Portland by extending NW 20th Avenue and NW Thurman Street. This will create a new intersection and a new, more efficient, route for people driving and walking in this growing area. This project is funded by a $7.5 million local improvement district (LID) funded by participating property owners in the area.

Street improvements include: 

  • New NW 20th Avenue from NW Raleigh Street to NW Upshur Street 
  • Protected bike lanes on NW 20th Avenue (NW Raleigh St to Upshur St) 
  • Protected bike lanes on NW Thurman St (NW 20th Ave to NW 19th Ave) 
  • Relocated NW Thurman Street from NW 20th Avenue to NW 21st Avenue 
  • Modifications to NW 23rd Avenue & Vaughn Street intersection at the U.S. 30 off-ramp 
  • Modifications to NW 23rd Avenue between NW Thurman Street and NW Vaughn Street 
  • Replacement traffic signal for NW 23rd Avenue & Vaughn St. & U.S. Highway 30 intersection 

Construction is nearing completion.  The new traffic signal at the NW 23rd & Vaughn & U.S. 30 intersection was activated on February 13, 2020 with its operation modified on February 20, 2020 so that the right turn movement from NW 23rd Avenue northbound to U.S. 30 eastbound is green at all times except when a pedestrian is present.

Project Plans:

NW 20th Avenue LID Part 1

NW 20th Avenue LID Part 2

NW 20th Avenue LID Part 3

NW 20th Avenue LID Part 4

Property owners are funding this project. If you have any questions about this project, please contact Local Improvement District Administrator and Project Manager Andrew Aebi.

Andrew Aebi | 503.823.5648


The City of Portland complies with all non‐discrimination, Civil Rights laws including Civil Rights Title VI and ADA Title II. To help ensure equal access to City programs, services and activities, the City of Portland will reasonably modify policies/procedures and provide auxiliary aids/services to persons with disabilities. Call 503-823-5185, TTY 503-823-6868 or Oregon Relay Service: 711 with such requests, or visit