Public WorksRoads and bridges
Construction traffic delaysReport a road concernWork zone safetyCurrent or future road projectsRoad frequently asked questionsSummer road preservationRoadside vegetationWinter snow and iceStreet sweepingPublic bridgesRestricted public bridgesPrivate bridgesGreen streets program
Traffic
OverviewTraffic signalsTraffic camerasParking
Equal opportunity - Title VIParks and trails
OverviewFind a park or trailPicnic sheltersParking feesReservations and eventsDog parks, other featuresPark rules and FAQsVandalism or maintenance concernsPark projects and fundingGreater Clark Parks District78th Street Heritage FarmCamp BonnevilleChelatchie Prairie Rail with TrailLower Daybreak Trail Improvement ProjectParks Advisory BoardComprehensive parks planLewis and Clark Regional Trail
Volunteer
OverviewCalendarAdopt A ParkAdopt A RoadOngoing volunteer opportunitiesOne-day work partiesYouth projectsVolunteer updatesVolunteer newsletterVolunteer forms
Stormwater
OverviewStormwater management/regulationsClean water feeWhat you can do for clean waterClean Water CommissionPollution control - facilitiesStream health and monitoringClean water projectsFrequently asked questionsReports and publications
Transportation
Transportation Improvement ProgramSidewalksCongestion and safety managementTraffic impact feesTransportation Planning
Flooding
Flood safetyFlood insuranceFlood insurance rate mapsDevelopment in flood plainsRiver gauge dataStreet floodingFlood protection newsletterClark County flood historyColumbia River and flooding
Legacy lands and natural resources
Legacy Lands - natural areasLegacy Lands - propertiesEndangered Species ActSalmon and steelhead protectionSustainable forestryForest landowners resourcesForest practices permitsReforestation programQuarries and mines
Vegetation and weed management
OverviewManaging noxious weedsWeed identificationWeed BoardFrequently asked questions
Property and survey
Property acquisitionResidential relocationRights-of-way information requestEliminate roadsSurplus property salesExcavation, fill and stockpile (grading)Surveys, subdivisions and short plats
Wastewater
Salmon Creek Treatment PlantWhat not to flush
Contractors and consultants
OverviewADA regulations for rights of wayDevelopment and Engineering BoardDevelopment engineeringEnvironmental permitsErosion control certificationPermit statusStandard details manualStreet and road standardsTechnical plans for county projectsTraffic control permitsTraffic impact fees
Chelatchie Prairie Railroad
OverviewRail-dependent developmentCurrent improvementsRailroad Advisory BoardRailroad historyChelatchie Prairie Rail with Trail
NewsDocuments, forms and links
DocumentsFormsLinksState Environmental Policy Act notices
Public Works indexAbout Public Works
AccreditationCommunity reportDivisionsPublic recordsStaff phone and email directoryStrategic plan
Frequently asked questionsContact

Northeast 179th Street Corridor Improvements

Clark County Public Works, in partnership with Washington State Department of Transportation (WSDOT), and in cooperation with adjacent development groups, has selected a preferred alternative for the Northeast 179th Street Corridor. The selection follows nearly a decade of planning, studies and public input, and supports a series of projects along a two-mile stretch between Northeast 179th Street near Interstate 5.

These projects improve the local transportation system to support the Clark County Comprehensive Growth Management Plan along the Northeast 179th Street Corridor. When complete, these projects will improve travel times, encourage economic development, optimize intersection locations, upgrade stormwater management and bring the corridor up to current road standards.

These improvements include WSDOT's future construction on the Northeast 179th Street Interchange at I-5 and public improvements to be constructed by private development, as well as the projects to be constructed by the county.

Corridor limits

The corridor limits on Northeast 179th Street are between Northeast Delfel Road and Northeast 50th Avenue. However, the improvements include several associated projects in the area.

Improvement benefits

These improvements will relieve traffic congestion and support economic development by:

  • Increasing road capacity by allowing more vehicles to move through the corridor.
  • Increasing spacing between intersections on either side of I-5.
  • Moving traffic efficiently by eliminating left-turn delays and traffic signal delays.
  • Improving safety for motorists and pedestrians by eliminating left turns and consolidating intersections.
  • Meeting the Clark County Comprehensive Growth Management Plan.

Open house

Thank you to the more than 130 people who attended the open house at Alki Middle School on Tuesday, Sept. 10. You can find the boards that were used at the event, including the Urban Holding area map here.

Stay tuned for future public involvement events about these projects.

Projects

Overall improvements include a series of projects that are anticipated to go to construction between 2021 and 2027. They include:

  • Northeast Delfel Road Realignment and Intersection Improvements (at Northeast 179th Street)
  • I-5/Northeast 179th Street Interchange and Ramp Reconstruction - WSDOT
  • Northeast 179th Street and Northeast 12th Avenue Intersection Construction (new intersection to be constructed by private developer)
  • Northeast 15th Avenue, from Northeast 179th Street to Northeast 10th Avenue - new arterial north of Northeast 179th Street
  • Northeast 179th Street and Northeast 29th Avenue Intersection improvements
  • Northeast 179th Street and Northeast 50th Avenue Intersection improvements
  • Northeast 10th Avenue (Northeast 149th Street to Northeast 154th Street) - street widening and bike/ped mobility improvements

Other documents

Project contacts

Scott Sawyer, project manager                                             Troy Pierce, project manager
Northeast 179th Street projects                                           Northeast 10th, Northeast 15th Avenue projects
Clark County Public Works                                                    Clark County Public Works
564-397-4364                                                                          564.397.4403
scott.sawyer@clark.wa.gov                                               troy.pierce@clark.wa.gov

© 2020 Clark County Washington