Crack Sealing

What We Do

Crack sealing is a commonly used preventive maintenance activity for pavement. Crack sealing prevents infiltration of water and other materials. This extends the life of the pavement.

When water seeps through cracks in the pavement it can freeze, expand and damage the pavement.

Crack sealing helps reduce structural deterioration, minimize pothole formation, and can prevent pavement distresses. It helps maintain streets in good condition, postponing the day we need to repave or rebuild them.

Current Projects

The 2017 program will begin in June and continue through August/September.

Locations of 2017 Crack Seal Program

  • NW 65th St – from 15th Ave NW to 32nd Ave NW
  • Greenwood Ave N – from N 67th St to N 85th St
  • Greenwood Ave N – from N 105th St to N 112th St
  • Leary Way NW – from 9th Ave NW to NW 36th St / 2nd Ave NW
  • NW 85th St – from 15th Ave NW to 32nd Ave NW
  • 3rd Ave NW – from NW 65th St to NW 80th St
  • 3rd Ave NW – from NW 92nd St to Holman Rd NW
  • 3rd Ave NW – from NW 113th Pl to NW 117th St
  • NW Market St – from NW 54th St to 32nd Ave NW
  • NW Market St – from Greenwood Ave N to 3rd Ave NW
  • NE 71st St – from 6th Ave NE to Green Lake Dr N
  • NE 75th St – from Banner Way NE to 20th Ave NE
  • N 145th St / NE 145th St – from Aurora Ave N to Lake City Way NE (eastbound lanes only)
  • W McGraw St – from 6th Ave W to 9th Ave W
  • W McGraw St – from Queen Anne Ave N to 3rd Ave W
  • E Cherry St – from 14th Ave E to 23rd Ave E
  • Beacon Ave S – from 59th Ave S to S Leo St
  • 51st Ave S – from Rainier Ave S to S Bangor St

Outreach Flyer for 2017 Program


Crack sealing typically happens in the summer to mid-September when conditions are relatively dry and there is little chance of rain. The crack seal process for a particular block is typically done within a day.

How Does SDOT Select the Streets for Treatment?

Crack sealing after photoHow do The roads that are selected for this preventive maintenance are rated as relatively in good condition (with surface cracks but no structural deterioration), based on SDOT’s latest pavement condition assessment of Seattle’s arterial streets, using the pavement condition index (PCI) rating for the streets.

What to Expect During Crack Seal Projects

Crew member with crack wandThe impacts of crack sealing are minor compared to a repaving project, but there are some impacts.

  • Parking restrictions: The work area covers from curb to curb, so parking will be restricted on both sides of the street during the day(s) of the crack sealing from 7 a.m. – 5 p.m. “No Parking” signs will be installed 72 hours prior to start of work. The parking restrictions are typically removed as soon as SDOT crews complete the maintenance work.
  • Schedule: Weather permitting, SDOT crews plan to start the crack sealing operation in early May. “No Parking” signs will be installed at least 72 hours prior to the start of work, which provides a good indication of the timing of the upcoming work. If you need more information regarding the schedule, please contact us.
  • Lane Closures: There will be no full street closure during the operation. SDOT will keep one lane open in each direction. Lane closures may last approximately 3 to 4 hours. Traffic flaggers will be present during maintenance work. Sidewalks will remain open at all times.
  • Access to driveways and alleys: Access to driveways or alleys may be disrupted for a few minutes during the day of the work, but SDOT crews will work to minimize any delays and will provide assistance as needed.