Blog Post

NW Marshall Semi Diverter Installed

Posted By Kate Washington on November 7, 2012

  • Blog, Featured News, Transportation

The Portland Bureau of Transportation (PBOT) has made NW Marshall Street a no-go zone for cars trying to turn west from NW 10th Ave.

Drivers are now confronted by a No Entry sign, a strip of parking in the road, and a bike lane between that and the sidewalk. Since the introduction last year of the Lovejoy/Northrup couplet, the road had become a popular way for drivers coming over the  Broadway Bridge to continue their journey westward. They were supposed to go one more block north to Northrup, but many were put off by the extra distance and lack of signage. PBOT judged this too much vehicular traffic, since Northrup is a designated bikeway.

Drivers also had been avoiding the long waits at the traffic light at 10th and Northrup. PBOT has reduced waiting time by altering the streetcar stop light so that it only triggers when the streetcar is present. It also moved the streetcar stop a few yards north, closer to Northrup, which enabled synchronizing the traffic signal at Northrup and 10th to detect the presence of streetcar and only trigger the streetcar-only phase when the streetcar is present. The result is a more efficient signal.

In addition to prohibiting west-bound turns, the semi diverter also prevents vehicles from crossing 10th using Marshall going west. This helps in case vehicles use 9th instead of 10th to head west on Marshall. Drivers should be aware that parking is still available on both sides of Marshall between 10th and 11th.

PBOT will be will be evaluating the performance of the semi diverter test and if deemed successful they will build a permanent physical barrier where today there is a barricade.

The NW Marshall semi diverter is an excellent example of our neighborhood planning committee collaborating with city transportation planning for neighborhood improvements. Board members have noticed driver compliance increasing over the weeks and are optimistic regarding the diverter’s effect.

Author: Kate Washington

Kate is the PDNA's Communication Committee chair leader.

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