2020 Pavement Management Preventative Maintenance - Slurry Seal


Questions: 503-635-0261 or pavement@lakeoswego.city

Crack and Slurry Seal Summer 2020 - Complete

About 75 streets across the City received crack and slurry seal this summer (see green streets on map below updates). Crack and slurry seal is a preventative maintenance measure and helps extend the life of pavement.

Update – August 19, 2020

Brief night activity for striping and intersection markings -- During late August and early September, you may see crews working at night applying striping and intersection markings on pavement. This work was authorized to occur in neighborhoods at night when pavement temperatures are lower. On busier streets, this allows the moving operation to occur under less traffic. The work is brief and noise is limited.

Update – August 5, 2020

  • Slurry sealing of approximately 75 streets in the City is complete. Final clean up is happening.
  • Crews are inspecting the roads and sweeping up loose rock.
  • Later in the summer, crews will be applying final striping of these roads, as needed.

Update – July 15, 2020

Slurry seal of streets is underway. A few streets have been rescheduled. The updated schedule, as of July 15, can be found here.

Slurry Seal Schedule

Slurry Seal Schedule 7-15

Update – June 30, 2020

  • The schedule mailed out in late June has shifted by one day. Slurry seal work is anticipated to begin on July 8. All dates mailed were shifted by one day. See updated schedule of streets/dates here.   

Update – June 25, 2020

  • Crack seal work began on June 22 and should be complete by July 3 (see June 18 update). Crack seal is in advance of the slurry seal that will happen in July.
  • Slurry seal will close a street to all traffic – vehicles, bikes, and pedestrians – for one full day, so following instructions, street closure and no parking signs is critical to the work being successfully completed.
  • A tentative schedule of the slurry seal dates is available. This schedule will be revised as we get closer and weather or other issues may affect plans.
  • A mailing should be arriving in mailboxes with the tentative schedule and more information.

How you will notified about the slurry seal date on your street:

  • Signage will be placed in the area about 7 days in advance of work.
  • A door hanger with the exact date of work will be placed 2-3 days in advance at each residence that is dependent on the road to reach their home. Neighbors who have alternate routes may not receive a door hanger. The door hanger will have a specific date for work and other instructions. You will be notified again if weather causes the work to be postponed.
  • No parking signs will go up on the street at least 24 hours in advance of the slurry seal work.



Update – June 18, 2020

  • Beginning week of June 22 – Crack sealing of streets that will receive slurry seal is beginning - watch for "no parking" areas on one day in late June/early July. Flaggers will help you around the area, but vehicles must be off the street so crews can access pavement cracks that need to be sealed. This webpage will be updated next week with schedule (by streets) for the July slurry seal activity that will require a full road closure. Residents on those streets will receive a mailer soon and a door hanger 48-72 hours of the slurry seal date and specific instructions.
  • On-street parking is prohibited in work zones. Watch for no parking signage. Crews need clear access to work areas for paving work. Cars may need to be towed out of work zones to avoid delays to work.
  • Neighbors have access to their homes during the June 22-July 3 crack seal work. Flaggers will help move people around equipment.
  • Slurry seal will happen on 75 streets beginning in early July and requires a full street closure to vehicles for one day per street. We are waiting on the confirmed schedule.


  • Slurry seal beginning after July 6 – Requires entire street closure for one full day. The slurry seal must fully dry before vehicles, bicycles, or pedestrians use it. Neighbors will be notified in advance. (Planned to be completed in July, may extend into August due to weather or other delays)

View the street receiving crack and slurry seal (green lines on map):

Learn more about the slurry seal process:

Project Details
WO 281
Related Projects Attachments