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Road Maintenance Projects
Routine Maintenance
Our maintenance team provides a variety of services year-round to keep our 1,400 miles of county roads safe, reliable and easy to navigate.
Bridge Maintenance
Our 186 bridges are inspected every 2 years and through those inspections we sometimes find repair and maintenance work that needs to be done to preserve the bridge structure and keep it safe for travelers. That work often includes bridge scour projects, either removing excess soil from stream channels or replacing soil around foundations that has been washed away during high water events.
Pavement Rehabilitation
Pavement rehabilitation includes treatments that extend the life of an existing road surface such as surface sealants, patching short spans of roadway and asphalt paving. These proactive measures add structure to the road, remedy pavement distresses, and maintain a road's condition to defer full reconstruction further in the future. See schedule for next five years.
Scheduled pavement rehabilitation projects in unincorporated Clackamas County (schedule could change):
2025 paving projects
Firwood area: (paving and striping complete, minor construction items nearing completion)
- Wildcat Mountain Road: Firwood Road to the gate at snow plow turnaround
Canby area: (striping, guardrail, pavement markings and minor construction items complete by Sept. 30)
- Arndt Road: Knights Bridge Road to Airport Road
- Airport Road: Arndt Road to Miley Road
Happy Valley area: Community Road Fund (paving ongoing; project complete by Sept. 30)
- 124th Ave: Sunnyside Road to Mather Road
- 124th Pl: Huron St to 13620 124th Pl
- 125th Ave: Sunnyside Road to Mather Road
- 126th Ave: Mather Road to 12660 126th Ave
- 128th Ave: Sunnyside Road to Mather Road
- Huron St: 126th Ave to 12470 Huron St
- Mather Road: 125th Ave to 12611 Mather Road
- Opal Way: 125th Ave to 12621 Opal Way
- Sonoma St: 126th Ave to 12705 Sonoma St
Oak Grove area: Community Road Fund (paving ongoing; project complete by Sept. 30)
- Derry Ln: Harold Ave to 130 feet past Rayna Ct
- Mark Kelly Ct: Harold Ave to to cul de sac
- Harold Ct: Harold Ave to to cul de sac
Molalla area: (paving and striping complete, minor construction items nearing completion)
- Canby-Marquam Hwy: Hwy 211 to Heinz Road
Oak Grove area: (paving may occur this fall; expect work complete in June 2026)
- El Centro Way: El Camino Way to Hill Road
- El Camino Way: Thiessen Road to Robin Road
- El Centro Ct: El Centro Way to cul de sac
- La Mesa Way: El Centro Way to Hill Road
- Sierra Vista Dr: Thiessen Road to cul de sac
Lake Oswego: (expect work to occur in spring 2026)
- Birdshill Road: From Midvale Road to include Birdshill Lp
Our crews will also repair short spans of roadway throughout the county, including:
- digging out and repaving rough pavement
- sealing cracks
- repairing slides
2026 paving projects
Bakers Ferry Road area
- Bakers Ferry Road: Springwater Road to Gerber Road
- Bakers Ferry Road: Gerber Road to Harding Road
Beavercreek area
- Dans Ave: Leland Road to cul de sac
- Dales Ave: Dans Ave to Leslie Ave
- Marilyns Ave: Dales Ave to cul de sac
- Leslie Ave: Leland Ave to cul de sac
Jennings Lodge area
- River Road: Jennings Ave to Roethe Road
- Colony Cir: Clayson Ave to Clayson Ave
- Clayson Ave: Oatfield Road to Portland Ave
- Colina Vista Ave: Clayson Ave to Jennings Ave
- Crystal Ln: Clayson Ave to Emerald Dr
- Emerald Dr: Clayson Ave to Jennings Ave
- Garnet Way: Emerald Ave to Emerald Ave
- Progress Ct: Clayson Ave to cul de sac
- Pilgrim Ct: Clayson Ave to cul de sac
- Plymouth Ct: Clayson Ave to cul de sac
Lake Oswego area
- Bonita Road: 5966 Bonita Road to Bangy Road
Marquam area
- Drake Road: Hwy 213 to Butte Creek Bridge
- Farm Road: Drake Road to Oster Road
- Farm Road: Oster Road to Monte Cristo Road
Paving Projects Planned Five Years in Advance
Learn more about our 5-year pavement management plan.
Pavement Preservation
To extend the life of a road, surface treatments are applied the existing roadways throughout the county including slurry seal and chip seal. A slurry seal is a coating of liquid asphalt; a chip seal is a coating of liquid asphalt and rock chips. See schedule for next five years.