County Maintained Roads

A red roadster leads a parade of classic cars through downtown Troutdale, with a crowd sitting on the sidewalk with an American flag.
Troutdale Summerfest parade on Historic Columbia River Highway, July 18, 2015. Photo by Jeff Muceus, CC BY-SA 2.0

Multnomah County Road Maintenance is responsible for maintaining 269 miles of roads.

Bridge Structures

Multnomah County Transportation also maintains a number of bridges and other structures in east county and Sauvie Island.

Mileage Data

The Oregon Department of Transportation's Oregon Mileage Report is the official source for public road mileage information in the state. The report includes state and local roads. The “Summary Report by County” is helpful.

Troutdale Summerfest photo by Jeff Muceus, CC BY-SA 2.0. Image has been cropped.