Bridge Maintenance Projects

Bridge scour projects either remove excess soil from stream channels or replace soil around foundations that has been washed away during high water events.

Want to know more about bridge scour? Watch a video about how we keep our bridges safe.

Projects Scheduled for 2019

The following projects are scheduled for 2019. The schedule may change due to weather and other conditions.

422nd Avenue Bridge over Cedar Creek | Sandy, OR

  • What: Reset retaining wall blocks on the SE corner of the bridge along Firwood Creek.
  • Why: To prevent erosion and to stabilize wall blocks and road fill.
  • When: This project is expected to take up to one week to complete; work to be scheduled between July 15 and August 31, 2019. 
  • Traffic impact: No road closure is planned, but there may be traffic delays of up to 20 minutes at a time

Boardman Avenue (culvert) on Boardman Creek | Milwaukie, OR

  • What: Install temporary dam, and clean and inspect culvert.
  • Why: This culvert is in need of maintenance and inspection as part of a larger project that will address erosion and reinforce Boardman Avenue at this location.
  • When: This project is expected to take up to one week to complete; work to be scheduled between July 1 and October 31, 2019. 
  • Traffic impact: No road closure is planned, but there may be traffic delays of up to 20 minutes at a time

Casto Road Bridge over unnamed stream | Oregon City, OR

  • What: Remove remnants of an abandoned beaver dam on the upstream side of the bridge. 
  • Why: To assist with drainage and to keep the stream channel centered under the bridge.
  • When: This project is expected to take one day to complete; work to be scheduled between July 15 and September 30, 2019. 
  • Traffic impact: No road closure is planned, but there may be traffic delays of up to 20 minutes at a time.

Folsom Road Bridge over unnamed, seasonal stream | Eagle Creek, OR

  • What:  Excavate accumulated sediment and invasive species from the stream channel.
  • Why:  To assist with drainage and to keep the stream channel centered under the bridge.
  • When: This project is expected to take up to one week to complete; work to be scheduled between July 15 and August 31, 2019. 
  • Traffic impact: No road closure is planned, but there may be traffic delays of up to 20 minutes at a time

Heiple Road Bridge over Currin Creek | Eagle Creek, OR

  • What:  Excavate accumulated sediment and invasive species from the stream channel.
  • Why:  To assist with drainage and to keep the stream channel centered under the bridge.
  • When: This project is expected to take up to one week to complete; work to be scheduled between July 15 and August 31, 2019. 
  • Traffic impact:  No road closure is planned, but there may be traffic delays of up to 20 minutes at a time.

Still Creek Road Bridge over Still Creek | Rhododendron, OR

  • What: Remove excess concrete from bridge footings. 
  • Why: Excess concrete is preventing proper inspection of both bridge footings.  
  • When: This project is expected to take up to two weeks to complete; work to be scheduled between July 15 and August 31, 2019. 
  • Traffic impact: No road closure is planned, but there may be traffic delays of up to 20 minutes at a time.
  • Additional work potential: After the excess concrete is removed, the bridge footings will be inspected for damage and/or erosion. It is possible that additional work will be needed in the future

Projects completed in 2017

Monte Cristo Road BridgeMonte Cristo Road Bridge over Garrett Creek
Replaced decayed bridge piling, and excavated, graded and added support to the southern bank of the creek upstream of the bridge using boulders and native vegetation.

 

 

 

Wilhoit Road Bridge (near Bird Road) over Rock Creek
Excavated accumulated material on the upstream west bank of Rock Creek, installed boulders and native vegetation along a portion of the upstream east bank, and installed 2 "stream barbs" to minimize future erosion. (Stream barbs are structures that project out from a streambank to redirect water flow away from an eroding stream bank.

 

 

Casa Del Rey Pedestrian Bridge over Mt. Scott Creek
Installed boulders and native vegetation, and stabilized the support structure on the north end of the bridge. This bridge is owned by the City of Milwaukie and maintained by the North Clackamas Parks and Recreation District (NCPRD). NCPRD asked the County Department of Transportation and Development to manage this project on their behalf.