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Columbia County
341 E. Main St.
Dayton, WA 99328

Public Works
Andrew Woods, P.E.
Public Works Director/County Engineer

Lisa Ronnberg
Business Manager

415 Guernsey
PO Box 5
Dayton, WA  99328

Ph: (509) 382-2534
Fx: (509) 382-4724

Monday - Friday
7:00 am - 3:30 pm
(closed noon to 12:30 pm)
Summer Hours 7:00 am - 5:30 pm
(closed noon to 12:30 pm)

This information is provided as a courtesy, actual documents are on file at the Columbia County Public Works office.
     Columbia County Road Standards
     2016 Public Works Fee Schedule
     2015 Construction Program
     2015 CAP Program
     2015 to 2020 TIP

To be added to our Small Works Roster please complete the form at the link below and return to the Public Works Department.

Small Works Roster Application

Current Road Closures:

1. Eckler Mountain Road at the Snow park is closed for the season.

Current roads with load restrictions -

If you are a property owner needing access to your property on a posted closed road please fill out the application on the link below.  You may bring it to the Public works office from 7:00 am to 3:30 pm Monday through Friday for processing.    
    Columbia County Landowner Use Permit Application

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