Pavement Maintenance

2025 Slurry Seal Project

The City has approved the contractor's remediation plan to correct the slurry seal. The streets will receive a new consistent thickness of slurry squeegeed flat with minimal seams to meet industry standards.

Schedule of Events:

June 18th: the contractor started removing excess slurry from the gutter pan and curb approach location to not more than ¾". This work is expected to conclude on July 3rd.
July 10th: the contractor will place the reader boards with street and closure hours.
July 14th: the roads will be swept and resealed.
- Roads will be closed to traffic for five hours.
- Please make sure your car is not parked on the street.
- Road work dependent on weather - check this page for updates.
August 14th: The contractor will sweep and clean up any loose rock.

Please follow all instructions provided by flaggers, barriers, and other traffic control personnel. We appreciate your patience while we work to repair the slurry.

Please contact communications@millcreekwa.gov if you have any questions.

Affected Streets

The order of the streets to be resealed is as follows:

158th Pl. SE
27th Dr. SE
Highlands Blvd. SE
162nd St. SE
24th Dr. SE
22nd Ct. SE
136th Pl. SE

View the street maps below to see specific road closure information.

2025 Slurry Seal Street Maps

Preserving Mill Creek's Streets with Slurry Seal

Mill Creek extends the life of neighborhood streets by applying a slurry seal, which is a thin layer of water, aggregate, and emulsified asphalt. This coating protects the pavement from weather and restores it with fresh aggregate, significantly prolonging road quality.

Does it make the road smoother?

While newly sealed streets may feel rough at first, this is normal and temporary. Street sweeping occurs multiple times in the months following application to remove loose gravel. Over time, vehicle traffic smooths the surface by embedding the aggregate into the pavement.

In about a year, streets regain their familiar smoothness and gain added durability that lasts for years to come

Is it expensive?

Slurry seal is a cost-effective preservation method, an alternative to repaving or rebuilding streets, which is why it's widely used by cities across the throughout the Puget Sound region and across the country.

Where is slurry seal being applied?

Slurry Seal is used by municipalities across the country, including many of our neighboring communities like Bothell, Kenmore, Shoreline, Mukilteo, Redmond, Burien, Seattle, and Kirkland, who have been successfully implementing Slurry Seal treatments for over 10 years.

For an in-depth look at the slurry seal process and its effectiveness in the Puget Sound, visit Kirkland's Slurry Seal page.

View the 2025 Slurry Seal Street Maps above to view affected neighborhoods in Mill Creek.

An example of a road in Mill Creek after slurry seal has been applied.

Safer Streets

Read about how properly designed and maintained roads create a safer place for all who live, work, and play in Mill Creek.

Safe Streets for All

Yearly Timeline

Street Selection

Streets around Mill Creek are selected based on a variety of factors.

Public Notification

Residents and those in surrounding areas near the selected streets are notified by the City in advance of construction activity and any potential delays in travel time.

Slurry Seal Application

Slurry seal is applied to the previously identified roads by a contractor after a bidding process, usually between July and September.