Tualatin-Sherwood Rd: Martinazzi Ave to I-5

The purpose of the project is to improve intersections and safety to address traffic issues at this location, while also improving pedestrian and bicycle safety. Traffic currently gets congested in the right lane as people use it to get to both northbound and southbound I-5. The project includes several strategic changes to improve predictability and safety for everyone:

  • Restripe existing lanes for smoother traffic flow onto I-5 north and south, and Nyberg St.
  • Reduce the planted median to provide a third eastbound lane (and shorter traffic lines in the other lanes).
  • Install new signage to help drivers find the best lane to use.
  • Move the bike lane on the south side of Nyberg St next to the curb; add a bike crossing of the on-ramp to southbound I-5.
  • Improve the biking connection between Tualatin-Sherwood Rd and the Tualatin River Greenway by adding buffered bike lanes and new signage on Boones Ferry Rd. This is as an alternative route to biking on Tualatin-Sherwood Rd and Nyberg St.

Click image to enlarge.

For questions or to receive quarterly project updates email: tmf@tualatin.gov

The Regional Context:

What Tualatin Residents May Notice About Traffic Congestion


Most Congested Metro Area

Portland is the nation’s 40th largest – but #12 most congested metro area (of 297 metro cities)

Most Congested in North America

#13 in North America (319 cities) – more congested than any city in Mexico and every Canadian city except Montreal.

Most Congested in the World

#40 most congested in world (1,360 cities)


Portland area congestion is worst at peak commute hours, but now present at all times of day/week

Most Congested U.S. Cities**

  • 1 Honolulu
  • 2 Jacksonville
  • 3 San Diego
  • 4 Los Angeles
  • 5 Portland

* Source: INRIX Global Traffic Scorecard, February 2018
** Source: WAZE Driver Satisfaction Index, December 2017