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Overlay

OVERLAY-timeline-2018
OVERLAY-80th-steam-roller
A contracted worker rolls a new overlay mat in 2017 onto Northeast 80th Street.

STREETS-overlay-processOverlay Program
The City of Kirkland repaves up to 10 lane-miles of its more traveled streets every year. The Capital Improvement Program pays for about half of those lane-miles. The other half is funded by the 2012 Streets Levy.
Repaving a street can extend its useful life by 10 to 20 years, at an estimated cost of $49,000 per block.

2019 Overlay Program
Kirkland will be repaving sections of streets this summer in six different neighborhoods. Those street sections are included in the sidebar and map thumbnail in the sidebar on the right.

The process this year begins in July with a process known as "lowering iron," during which workers remove utility lids to prevent the damage they would otherwise sustain during the grinding stage. 

The grinding stage is when contracted crews use milling machines to remove the top three to five inches of a street's asphalt. Once crews have removed the street's damaged layer of asphalt, they are ready--assuming good weather--to lay down its new asphalt surface. 

Kirkland's goal for its street preservation program is to improve the score of its arterial network to 70 on the Pavement Condition Index.​ The street network's Pavement Condition Index score at the end of 2015 was 65.4. In 2018, it was 70. Some of that improvement, however, can be attributed to a change in how the City measures its street conditions.

A repaved street would score 100 on the index. A street riddled with potholes and alligator cracks would likely score lower than 50. Streets that score lower than 50 usually require total reconstruction, which costs taxpayers $165,000 per City block. The City of Kirkland rarely reconstructs roads due to that expense.

TYPICAL ANNUAL STREET PRESERVATION SCHEDULE:

November to April: Street selection and design  
December to March:
Surveying and data collection
April to June: Prepping, grinding, repaving and striping 93rd and 100th avenues northeast
May to August:
Improving access to sidewalks (A.D.A. upgrades to curb ramps)
July to October:
Repaving arterials
July to September: Treating neighborhood roads with slurry seal

 Caring for your infrastructure to keep Kirkland healthy, safe and vibrant.

Public Works
Engineering
123 5th Avenue, Kirkland WA 98033
T. 425-587-3800 | F. 425-587-3807
Mon-Fri, 8 a.m. to 5 p.m.

Operations & Maintenance
915 8th St, Kirkland WA 98033
T. 425-587-3900 24/7 | F. 425-587-3902
Mon-Fri, 6:30 a.m.-3:30 p.m.

General Inquiries - Contact us via the: 
Our Kirkland Customer Service Portal