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​Engineering

In response to the Coronavirus, we are taking steps to protect both the public and our employees. We are continuing to do our best to serve the needs of the public while maintaining a safe and healthy working environment and mitigating the spread of COVID-19.

We recommend all Engineering customers call (503) 588-5036, between 8:00 am and 5:00 pm, before coming to our office so that we have the opportunity to assist you over the phone and hopefully save you a trip to the Public Works office.

General Information

Civil Rights/Title VI

Earthquake Bridge Inspection Guide

NPDES Stormwater Permit 1200-CA
                (effective thru 9/15/22)

NPDES Stormwater Permit 1200-CA
               (effective 9/15/22-9/14/27)

Stormwater Quality Treatment Engineering Standards 
for the Stormwater Management Area

 

Important Information

Bids & Contracts

Road Closures

 

Standard Specifications

General Conditions for Construction for Marion County v201911 

General Conditions for Construction for Marion County v2021 

 

 

 

Capital Projects

Best Management Practices for Clean Water

Construction Projects

Engineering Standards

Resurfacing Q & A

Slurry Q & A 

 

Land Development Engineering and Permits

Current office hours at 5155 Silverton Road NE are 8:00 AM to 5:00 PM, Monday - Friday.

Permit Information

System Development Charges (SDC's)

 

Surveyors Office

Surveyors Office

Right of Way (Public right of way acquisitions information)

Withdrawals from County Road System (Maintenance and county road status removal information)

There are no legalizations in progress at this time.

 

Transportation Engineering 

2005 Rural Transportation System Plan

Average Daily Traffic Counts

Bike Route Map

Traffic Impact Analysis Requirements

Overweight, Oversize, or Over Dimensional Permits