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Transportation Maintenance

Road Maintenance Projects

Bridge Maintenance
Pavement Rehabilitation
Pavement Preservation
Additional Information

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. 

110951

2,804 shoulder miles | September–July 
250 miles annually maintained 

  • Improves sight distance
  • Speeds up snow melt
  • Improves air flow and sun exposure
  • Reduces vehicle damage
110951

10,229 catch basins | January–December

  • Minimizes flooding
  • Protects road base
110951

2,000 shoulder miles | October–November, April–June
40 miles annually maintained  

  • Maintains water flow through drainage channels
  • Prevents overflow
  • Controls erosion after heavy storms
  • Protects road base
110951

2,317 culverts, 4 miles of frontage pipe | January–December

  • Imitates natural water flow
  • Minimizes flooding
110951

21 miles | January–December

  • Supports traveler safety
  • Reduces risk of vehicles running off the road
  • Reduces risk of head-on crashes
110951

1,200 miles of yellow striping and 900 miles of white striping | July–October

  • Increased visibility, especially at night
  • Provides clear boundaries for all road users  
  • Protects turning traffic and reduces crashes
110951

2,845 lane miles | March–October

  • Prevents sinkholes
  • Maintains integrity of road base 
110951

2,845 lane miles | January–December

  • Reduces road deterioration
  • Reduces vehicle damage
  • Protects road base
110951

2,804 shoulder miles | September–July 1 

  • Improves visibility
  • Improves access to shoulders and ditches for maintenance
  • Reduces chance of fire from vehicles on the side of the road or dragging chains 
     
110951

2,804 paved shoulder miles, 2,359 gravel shoulder miles | October–November, February–May

  • Reduces abrupt edges
  • Provides area outside travel lane to maneuver
  • Protects structural integrity of road edge
110951

2,381 manholes, 230 dry wells | January–December

  • Drains surface water
  • Filters water before entering larger drainage system
110951

69,808 signs at 16,543 locations | January–December

  • Controls traffic and provides safety for all road users
  • Provides directions, caution and regulation information
  • Evolves with road system to improve safety and efficiency
110951

165 traffic signals | January–December

  • Controls traffic and provides safety for all road users
  • Adjusts signals in real-time based on traffic flow
  • Reduces congestion and maintains traffic flow
     
110951

564 lane miles | January–December

  • Allows for drainage of storm water
  • Reduces pollution, reduces drainage maintenance
  • Improves safety, health and water quality
110951

A chip seal is a coating of liquid asphalt and rock chips applied to the existing roadway to extend the life of the pavement. There are four steps in the chip sealing process – applying an oil patch to the most degraded areas, putting down the chip seal, sweeping up excess rock chips and fog sealing (applying a thin coat of asphalt on top of the chip seal).

30991

Though your street is in basically sound condition, it needs routine maintenance to protect it. Chip sealing, which is effective for 7-10 years, stops water from seeping through the surface and damaging the pavement and road base. It costs less to apply chip seal to the street surface than to fix the street base if it is damaged.

30991

Once oil patches are applied, they are allowed to cure for one-two weeks before the chip seal is added. The sweeping and fog sealing are done as soon as possible after the chip seal, usually within 1-2 days based upon weather and the availability of work crews. While the surface can be driven or walked on at any stage, after the process is complete it takes about two weeks before the chip seal is firmly set.

30991

If it is raining or if rain is in the forecast, we will assign our crews to other work for the day. Chip seal must go on a dry surface. That is also why we ask that you make sure any sprinklers are turned off beginning at midnight the night before the chip seal work is scheduled.

30991

You will receive a notice at your door a few days ahead of time. If it does rain, work may be delayed.

30991

Please move your car off the street from the time the chip sealing begins to the completion of the fog sealing process – a period of approximately 2-3 days. You will always be able to drive through the area, but the entire street surface must be available for the work crews. Please also let family, friends and delivery people know not to park their vehicle on the street during that time period. If a vehicle is left on the street, we try to find the owner, but delays cost tax money. Therefore, cars not moved by the time the work begins will be towed at the owner's expense. If your car is towed, contact the Sheriff's Office, 503-655-8441.

30991

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.

Contact for Bridge Maintenance
Department Staff
Kevin Morris
Transportation Maintenance Supervisor
503-650-3246
kmorris@clackamas.us

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):

2026 paving projects

Barton area

  • Bakers Ferry Road: Springwater 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

Lake Oswego area

  • Birdshill Road: Midvale Road to Birdshill Lp
  • Birdshill Lp: Birshill Road to Birdshill Road
  • Fielding Road: Briarwood Road to culdesac

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

Oatfield area

  • El Centro Way: Hill Road to El Camino Way
  • El Centro Court: El Centro Way to cul-de-sac
  • La Mesa Way: Hill Road to El Centro Way
  • El Camino Way: Robin Road to Thiessen Road
  • Sierra Vista Drive: Thiessen Road to cul-de-sac

Our crews will also repair short spans of roadway throughout the county, including:

  • digging out and repaving rough pavement
  • sealing cracks
  • repairing slides

2026 road sealant projects

Mt Scott area – 4 miles

  • Otty Pl SE: From 92nd Ave to East property line of 9330 Otty Pl
  • Derek Ct SE: From 99th Dr to cul-de-sac 
  • 98th Ct SE: From King Wy to cul-de-sac
  • Wessex Wy SE: From Dundee Dr to Dundee Dr
  • 92nd Ct SE: From Hillcrest Rd to cul-de-sac
  • Cleone Ct SE: From 100th Dr to cul-de-sac
  • King Wy SE: From 99th Dr to 96th Ave 
  • Ct SE: From 99th Dr to cul-de-sac
  • 93rd Ct SE: From Stevens Wy to cul-de-sac
  • Cambray Wy SE: From Wyndham Wy to Carnaby Wy  
  • Kela Ct SE: From 99th Dr to cul-de-sac
  • Steven Ct SE: From 99th Dr to cul-de-sac
  • Carnaby Wy SE: From Dundee Dr to dead end 
  • 96th Ave SE: From DUNDEE Dr to Wyndham Wy 
  • 97th Ct SE: From King Wy to cul-de-sac
  • Hillcrest Road SE: From Stevens Road to 92nd Ct 
  • Stacy Ct SE : From Gia Ct to cul-de-sac
  • 99th Ct SE: From Idleman Rd to cul-de-sac
  • 94th Pl SE: From Stevens Wy to cul-de-sac
  • Wyndham Wy SE: From 10015 Wyndham Wy to Scott Park Ln 
  • 95th Ct SE: From Stevens Wy to cul-de-sac 
  • Scott Park Ln SE: From SE Wyndham Wy to PVT Scott Park Cr 
  • Lynn Ln SE: From 92nd Ave to cul-de-sac
  • 96th Ct SE: From Stevens Wy to cul-de-sac
  • 99th Dr SE: From Stevens Wy to Idleman Rd 
  • Kela Pl SE: From 99th Dr to cul-de-sac
  • Hunters Bluff Ave SE: From Johnson Creek Blvd to cul-de-sac
  • 96th Ave SE: From Idleman Rd to Stevens Wy 
  • 97th Ave SE: From Idleman Rd to cul-de-sac
  • 97th Ave SE: From Dundee Dr to dead end 
  • Gia Ct SE: From 99th Dr to cul-de-sac
  • 100th Dr SE: From 99th Dr to 99th Dr 
  • 92nd Ave SE: From 92nd Ct to Stevens Wy


Happy Valley area – 2 miles

  • Venice Ridge Wy SE: From 16166 Goosehollow Dr to cul-de-sac 
  • Gladys Rose Wy SE: From Davidoff Wy to Eckert Ln 
  • Eckert Ln SE: From Siri Lp to dead end
  • Goosehollow Dr SE: From 16150 Goosehollow Dr to dead end 
  • Royer Road SE: From 17045 SE Royer Road to 232nd Dr  
  • Siri Lp SE: From Eckert Ln West to Eckert Ln East 
  • Deer Meadow Lp SE: From Eckert Ln to 16345 Deer Meadow Lp 
  • Summit Rock Wy SE: From Goosehollow Dr to Venice Ridge Wy
  • Alder Meadows Dr SE: From Eckert Ln to 16268 Alder Meadows Dr
  • Tallina Dr SE: From 15986 Tallina Dr to dead end

Oak Grove area – 10 miles 

  • Fairoaks Ave SE: From Oakgrove Blvd to cul-de-sac
  • River Forest Road: From River Road to River Forest Dr
  • River Forest Dr: From River Forest Road to Oak Grove Blvd 
  • River Forest Ct: From River Forest Road to River Forest Dr 
  • River Forest Dr: From River Forest Ct to River Forest Road 
  • 26th Ave SE: From Park Ave to dead end
  • Crestview Ave SE: From Pinehurst Ave to Cardinal St 
  • Cardinal St SE: From Crestview Ave to 4210 SE Cardinal St 
  • Pinehurst Ave SE: From Oatfield Road, to SE Raelyn Terrace
  • Park Ave SE: From Oatfield Road to 32nd Ave
  • River Forest Ln: From River Forest Pl to dead end
  • 24th Ave SE: From Evergreen St to Dove St
  • Evergreen Ave SE: From Briggs St to Oatfield Road
  • Fairoaks Ln SE: From Fairoaks Ave to cul-de-sac
  • Laurie Ave SE: From Courtney Ave to Driveway of 13000 SE Laurie Ave
  • Briggs St SE: From Nixon Ave to Pinehurst Ave
  • Loeffelman Road: From Briggs St to Oatfield Road
  • Fairoaks Wy SE: From Fairoaks Wy to Courtney Ave
  • Fairoaks Wy SE: From Fairoaks Ave to 14141 Fairoaks Wy
  • Overlook Ln SE: From Fairoaks Ave to 14025 Se Overlook Ln
  • Schroeder Ave SE: From Courtney Ave to 13810 SE Schroeder Ave 
  • 23rd Ave SE: From Evergreen St to River Road
  • Nixon Ave SE: From Aldercrest Road to Maple Ln
  • Beech St SE: From Willamette Ave to Snowberry St
  • Snowberry SE St: From, Beech St to Briggs St
  • Maple Ln SE: From Nixon Ave to Snowberry St
  • Maple Ln SE: From Pinehurst Ave, to cul-de-sac
  • Evergreen St SE: From River Road to trolley trail connector
  • 22nd Ave SE: From Evergreen St to dead end
  • Silver Springs Road: From Oatfield Road to dead end
  • 20th Ave SE: From Park Ave to Evergreen St
  • 21st Ave SE: From Evergreen St to Park Ave
  • 27th Ave SE: From Park Ave to driveway at 12650 SE 27th Ave
  • Beech St SE: From Willamette Ave to South property line of 13922 SE Beech St
  • Yew St SE: From Laurie Ave to Fairoaks Ave
  • 31st Ave SE: From Park Ave to Evergreen Ave
  • 32nd Ave SE: From Park Ave to Evergreen Ave
  • Anspach St SE: From Fair Oaks Ave to Laurie Ave
  • Ash Ave SE: From Pinehurst Road to Cardinal St
  • Bluff Rd SE: From Malloy Ln to Courtney Ave
  • Fairoaks Dr SE: From Bluff Road to 13720 SE Fairoaks Dr
  • 26th Ave SE: From Park Ave to Dove St
  • Cinderella Ct SE: From Oatfield Road to cul-de-sac
  • Ranstad Ct SE: From Cinderell Ct to cul-de-sac
  • Thornton Dr SE: From Fairoaks Ave to 15195 SE Thornton Dr
  • Willamette Ave: From Maple Ln to Fernridge Rd
  • 25th Ave SE: From Evergreen St to 12672 SE 25th Ave
  • Celeste Ct SE: From Pinehurst Ave to cul-de-sac
  • Wilkinson Ct SE: From Pinehurst Ave to cul-de-sac
  • Wagner Ln SE: From Oak Grove Blvd to 14500 SE Wagner Ln
  • Courtney Ave SE: From River Road to Fairoaks Ave
  • Courtney Ave SE: From Bluff Road to River Villa Park
  • Fairoaks Ave SE: From Courtney Ave to Oakgrove Blvd
     
32866

2,804 shoulder miles | September–July 
250 miles annually maintained 

  • Improves sight distance
  • Speeds up snow melt
  • Improves air flow and sun exposure
  • Reduces vehicle damage
110951

10,229 catch basins | January–December

  • Minimizes flooding
  • Protects road base
110951

2,000 shoulder miles | October–November, April–June
40 miles annually maintained  

  • Maintains water flow through drainage channels
  • Prevents overflow
  • Controls erosion after heavy storms
  • Protects road base
110951

2,317 culverts, 4 miles of frontage pipe | January–December

  • Imitates natural water flow
  • Minimizes flooding
110951

21 miles | January–December

  • Supports traveler safety
  • Reduces risk of vehicles running off the road
  • Reduces risk of head-on crashes
110951

1,200 miles of yellow striping and 900 miles of white striping | July–October

  • Increased visibility, especially at night
  • Provides clear boundaries for all road users  
  • Protects turning traffic and reduces crashes
110951

2,845 lane miles | March–October

  • Prevents sinkholes
  • Maintains integrity of road base 
110951

2,845 lane miles | January–December

  • Reduces road deterioration
  • Reduces vehicle damage
  • Protects road base
110951

2,804 shoulder miles | September–July 1 

  • Improves visibility
  • Improves access to shoulders and ditches for maintenance
  • Reduces chance of fire from vehicles on the side of the road or dragging chains 
     
110951

2,804 paved shoulder miles, 2,359 gravel shoulder miles | October–November, February–May

  • Reduces abrupt edges
  • Provides area outside travel lane to maneuver
  • Protects structural integrity of road edge
110951

2,381 manholes, 230 dry wells | January–December

  • Drains surface water
  • Filters water before entering larger drainage system
110951

69,808 signs at 16,543 locations | January–December

  • Controls traffic and provides safety for all road users
  • Provides directions, caution and regulation information
  • Evolves with road system to improve safety and efficiency
110951

165 traffic signals | January–December

  • Controls traffic and provides safety for all road users
  • Adjusts signals in real-time based on traffic flow
  • Reduces congestion and maintains traffic flow
     
110951

564 lane miles | January–December

  • Allows for drainage of storm water
  • Reduces pollution, reduces drainage maintenance
  • Improves safety, health and water quality
110951

A chip seal is a coating of liquid asphalt and rock chips applied to the existing roadway to extend the life of the pavement. There are four steps in the chip sealing process – applying an oil patch to the most degraded areas, putting down the chip seal, sweeping up excess rock chips and fog sealing (applying a thin coat of asphalt on top of the chip seal).

30991

Though your street is in basically sound condition, it needs routine maintenance to protect it. Chip sealing, which is effective for 7-10 years, stops water from seeping through the surface and damaging the pavement and road base. It costs less to apply chip seal to the street surface than to fix the street base if it is damaged.

30991

Once oil patches are applied, they are allowed to cure for one-two weeks before the chip seal is added. The sweeping and fog sealing are done as soon as possible after the chip seal, usually within 1-2 days based upon weather and the availability of work crews. While the surface can be driven or walked on at any stage, after the process is complete it takes about two weeks before the chip seal is firmly set.

30991

If it is raining or if rain is in the forecast, we will assign our crews to other work for the day. Chip seal must go on a dry surface. That is also why we ask that you make sure any sprinklers are turned off beginning at midnight the night before the chip seal work is scheduled.

30991

You will receive a notice at your door a few days ahead of time. If it does rain, work may be delayed.

30991

Please move your car off the street from the time the chip sealing begins to the completion of the fog sealing process – a period of approximately 2-3 days. You will always be able to drive through the area, but the entire street surface must be available for the work crews. Please also let family, friends and delivery people know not to park their vehicle on the street during that time period. If a vehicle is left on the street, we try to find the owner, but delays cost tax money. Therefore, cars not moved by the time the work begins will be towed at the owner's expense. If your car is towed, contact the Sheriff's Office, 503-655-8441.

30991

Paving Projects Planned Five Years in Advance

Learn more about our 5-year pavement management plan.

Contact for Pavement Rehabilitation
Department Staff
Paving Hotline
503-650-3744
roadconcerns@clackamas.us

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.
 

Chip Seal FAQ

30991

2,804 shoulder miles | September–July 
250 miles annually maintained 

  • Improves sight distance
  • Speeds up snow melt
  • Improves air flow and sun exposure
  • Reduces vehicle damage
110951

10,229 catch basins | January–December

  • Minimizes flooding
  • Protects road base
110951

2,000 shoulder miles | October–November, April–June
40 miles annually maintained  

  • Maintains water flow through drainage channels
  • Prevents overflow
  • Controls erosion after heavy storms
  • Protects road base
110951

2,317 culverts, 4 miles of frontage pipe | January–December

  • Imitates natural water flow
  • Minimizes flooding
110951

21 miles | January–December

  • Supports traveler safety
  • Reduces risk of vehicles running off the road
  • Reduces risk of head-on crashes
110951

1,200 miles of yellow striping and 900 miles of white striping | July–October

  • Increased visibility, especially at night
  • Provides clear boundaries for all road users  
  • Protects turning traffic and reduces crashes
110951

2,845 lane miles | March–October

  • Prevents sinkholes
  • Maintains integrity of road base 
110951

2,845 lane miles | January–December

  • Reduces road deterioration
  • Reduces vehicle damage
  • Protects road base
110951

2,804 shoulder miles | September–July 1 

  • Improves visibility
  • Improves access to shoulders and ditches for maintenance
  • Reduces chance of fire from vehicles on the side of the road or dragging chains 
     
110951

2,804 paved shoulder miles, 2,359 gravel shoulder miles | October–November, February–May

  • Reduces abrupt edges
  • Provides area outside travel lane to maneuver
  • Protects structural integrity of road edge
110951

2,381 manholes, 230 dry wells | January–December

  • Drains surface water
  • Filters water before entering larger drainage system
110951

69,808 signs at 16,543 locations | January–December

  • Controls traffic and provides safety for all road users
  • Provides directions, caution and regulation information
  • Evolves with road system to improve safety and efficiency
110951

165 traffic signals | January–December

  • Controls traffic and provides safety for all road users
  • Adjusts signals in real-time based on traffic flow
  • Reduces congestion and maintains traffic flow
     
110951

564 lane miles | January–December

  • Allows for drainage of storm water
  • Reduces pollution, reduces drainage maintenance
  • Improves safety, health and water quality
110951

A chip seal is a coating of liquid asphalt and rock chips applied to the existing roadway to extend the life of the pavement. There are four steps in the chip sealing process – applying an oil patch to the most degraded areas, putting down the chip seal, sweeping up excess rock chips and fog sealing (applying a thin coat of asphalt on top of the chip seal).

30991

Though your street is in basically sound condition, it needs routine maintenance to protect it. Chip sealing, which is effective for 7-10 years, stops water from seeping through the surface and damaging the pavement and road base. It costs less to apply chip seal to the street surface than to fix the street base if it is damaged.

30991

Once oil patches are applied, they are allowed to cure for one-two weeks before the chip seal is added. The sweeping and fog sealing are done as soon as possible after the chip seal, usually within 1-2 days based upon weather and the availability of work crews. While the surface can be driven or walked on at any stage, after the process is complete it takes about two weeks before the chip seal is firmly set.

30991

If it is raining or if rain is in the forecast, we will assign our crews to other work for the day. Chip seal must go on a dry surface. That is also why we ask that you make sure any sprinklers are turned off beginning at midnight the night before the chip seal work is scheduled.

30991

You will receive a notice at your door a few days ahead of time. If it does rain, work may be delayed.

30991

Please move your car off the street from the time the chip sealing begins to the completion of the fog sealing process – a period of approximately 2-3 days. You will always be able to drive through the area, but the entire street surface must be available for the work crews. Please also let family, friends and delivery people know not to park their vehicle on the street during that time period. If a vehicle is left on the street, we try to find the owner, but delays cost tax money. Therefore, cars not moved by the time the work begins will be towed at the owner's expense. If your car is towed, contact the Sheriff's Office, 503-655-8441.

30991
Contact for Pavement Preservation
Department Staff
Jon Sparks
Contact for July through October
503-964-4522
jsparks@clackamas.us
Daryn Thorpe
Contact for November through June
503-722-6301
DarynTho@clackamas.us

Additional Information

Damascus Roads
Planning Projects
State Road Projects
Transportation Engineering Construction Projects
Transportation Services Building

Phone:503-557-6391
Fax:503-650-3992
Email:roadconcerns@clackamas.us

Transportation Services Building, 19246 Wacheno Parkway Oregon City, OR 97045

Office Hours:

Monday to Thursday 
7:30 a.m. to 5 p.m.

After Hours: 
503-655-8211

Report a Road-Related Concern