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

Public Works
Charles Eaton
Public Works Director/County Engineer

Amber Phinney
Business Manager

415 N. Guernsey Ave.
PO Box 5
Dayton, WA  99328

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

Winter Hours
Monday - Friday
7:00 am - 3:30 pm
(closed noon to 12:30 pm)
Summer Hours 4/1/2020
Monday - Thursday
6:00 am - 4:30 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

2020 Public Works Fee Schedule Click Here

To be added to our Small Works Roster please complete the form at the link below and return to the Public Works Department.  Please note: All small works contractors must be aware of Washington State prevailing wage laws.

Small Works Roster Application
Small Works Roster Application part 2 required

Current Road Closures: 

Winter Road Closures Click Here

Current Roads with Load Restrictions:

Eckler Mountain Road
Hatley Gulch Road
Hartsock Grade
Robinette Mountain Road

Road Load Restriction Regulations

Practical Applications for Load Restrictions

Resolution Regarding Load Restrictions

ORV Resolution 2010-12

ORV use on Columbia County Roads - click on this link

Addressing and Right of Way Permits

Right-of-Way Access Conditions

Approach Design Standards

Approach Permit

Addressing Permit

Utility Permit

Columbia County Public Works Organizational Chart Click Here


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