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Crack Sealing in Seattle

For interpreter services, please call
206-684-ROAD (7623)


What is crack sealing?

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.


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.

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.


2016 Project

Typical cracks filled by crack sealing

The 2016 program will begin in May and continue through August/September.

Locations of 2016 Crack Seal Program

  • S Dearborn St between 5th Av S and Rainier Ave S
  • 12th Ave S between E Yesler Way and Jose Rizal Bridge (south of S Weller St)
  • Airport Way S between S Royal Brougham Way and S Edmunds St
  • 50th Ave S between S Genesee St and S Hudson St (southbound lane only)
  • Beacon Ave S between S Holgate St (top of ramp) and 11th Ave S
  • 35th Ave SW between Fauntleroy Way SW and SW Manning St
  • SW Manning St between 35th Ave SW and 37th Ave SW
  • Beach Dr SW between SW Genesee St and SW Canada Dr
  • NE 45th St between 7th Ave NE and 20th Ave NE
  • NE 45th St between Montlake Blvd NE and 43rd Ave NE
  • NE 45th Pl between Union Bay Pl NE and 47th Ave NE
  • 35th Ave NE between NE 47th St and NE 55th St
  • NE Northgate Way between 1st Ave NE and 15th Ave NE

Map of 2016 Crack Seal Locations

Outreach Flyer for 2016 Program

What to Expect during Crack Seal Projects

The 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 ALLEYS AND DRIVEWAYS:  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. 

Contact Us

If you have any questions or comments on the crack seal program you may

  • Call Susan Almachar, Program Manager, at 206-684-5303 or 206-396-3556 E-mail
  • Write to:
    Crack Seal Program
    SDOT/Street Maintenance
    PO Box 34996
    Seattle, WA 98124-4996

For Street Maintenance 24-hour emergencies, please call: 206-386-1218.

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