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Sidewalk Preservation

Detour map shows a traffic detour around Fifth Street, Seventh Avenue and Sixth Street

Project is Complete

(April 12, 2017) -- Sixth Avenue, between Fifth and Sixth streets will close for two months, starting later this month while Kirkland's sidewalk maintenance contractor repairs 1,300 linear-feet of damaged sidewalk. Residents, emergency responders and mail delivery will still have access. The contractor will also close street parking on Sixth Street, between Sixth Avenue and Seventh Avenue.

WHAT: A project to repair and replace 1,300 linear-feet of damaged sidewalk along a one-block section of Sixth Avenue and Sixth Street begins this spring and will be complete by summer. Kirkland’s Sidewalk Maintenance Program will restore a uniform sidewalk along both sides of the neighborhood streets.

WHAT TO EXPECT: To restore the sidewalk and ensure its longevity, Kirkland’s prospective contractor must first remove 29 trees that are in the City’s right-of-way. Kirkland will replace nine of those trees during sidewalk construction.

Project Overview: The Public Works Department maintains hundreds of miles of sidewalk within the City using two available funding sources - the Street Operating Fund and the Capital Improvement Program (CIP). 

A number of factors cause sidewalk damage.  The primary cause is from tree roots pushing up on concrete sidewalk panels which cause "offsets" between adjacent panels.  Other causes are heavy vehicles, improper installation, and the heaving or consolidation of soils beneath sidewalks due to groundwater or leaking yard drain lines which lead to differential settlement; however, tree roots are the highest contributor to sidewalk damage throughout the City.

Depending on the nature and severity of the damage, different repair methods are employed.  Because the City's policy is to protect trees, major emphasis is placed on maintaining sidewalks in ways that, to the largest extent possible, do no harm to the trees.  This often includes root pruning under the direction of a certified arborist to preserve the tree root structure, protect the tree itself, and prolong the life expectancy of the replaced walking surface; tree removal is a last resort. 

Maintenance strategies that are routinely employed include: 

  • Mechanical grinding of offsets that are between 1/2 and 1 inch
  • The use of asphalt to "wedge" offsets greater than 1 inch
  • Removing concrete panels and replacing them with either asphalt or more concrete, as appropriate, to reestablish the walking surface.
Because of the extensive sidewalk network that the City is responsible for, limited funding, and the continued degradation of this infrastructure, a systematic approach to prioritizing repairs is imperative.  During the development of the City's Active Transportation Plan (ATP) in 2009, an analysis and characterization was made of likely pedestrian traffic generators.  Schools, transit routes, parks and commercial areas were deemed to be those facilities most likely to experience high pedestrian use.  Walking facilities are prioritized in relation to their proximity to destinations; facilities near schools for example, receive a higher relative priority if 1/8 mile or closer (1.25 ATP rating) than those between 1/4 mile and 1/8 mile (1.00 ATP rating). 

What to Expect:
• There may be inconvenience associated with driving through the work zone.
• Traffic control and flagging operations will be in effect.
• No-parking signs will be posted at least 24 hours in advance of any parking restrictions.
• Open trenches will be backfilled and/or covered at the end of each work day.
• Emergency vehicle access will be maintained throughout the construction process.

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

Title VI:  It is the City of Kirkland’s policy to ensure full compliance with Title VI of the Civil Rights Act of 1964 by prohibiting discrimination against any person on the basis of race, color, national origin or sex in the provision of benefits and services under any programs and activities. Any person who believes his/her Title VI protection has been violated, may file a complaint with the City of Kirkland.  For questions regarding Kirkland’s Title VI Program, or to file a complaint with the City of Kirkland, please contact the Title VI Coordinator at 425-587-3875 or

 Alternate Formats: Persons with disabilities may request materials in alternative formats — please contact the Title VI Coordinator at 425-587-3875 or Persons with hearing impairments may access the Washington State Telecommunications Relay Service at 711.

Public Works
Mon-Fri, 8 a.m. to 5 p.m.
123 5th Avenue, Kirkland WA 98033
Operations & Maintenance
Mon-Fri, 6:30 a.m.-3:30 p.m.
915 8th St, Kirkland WA 98033

General Inquiries

Engineering: T. 425.587.3800 | F. 425.587.3807
Operations & Maintenance: T. 425.587.3900 | F. 425.587.3902