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Pudding River (Whiskey Hill Road) Bridge Replacement

Transportation Engineering Bridge Replacement Project

Project Description: The existing two-lane bridge was built in 1931 and is reaching the end of its functional life. While not at risk of collapsing, it is very narrow and because of the horizontally-curved alignment has poor sight distance. Because of these factors, this bridge has been the site of numerous accidents over the years. This project will replace the existing bridge with a new bridge that meets or exceeds current and much safer design standards.

Updated: 08/06/14

Status: In Design


  • 2014 to early 2015 - Continue and complete design work
  • Early 2014 to end of 2014 - Apply for and obtain environmental permits
  • Mid 2014 to early 2015 - Work with area property owners on right-of-way issues
  • Winter/Spring of 2015 - Hire construction contractor
  • 2015-16 - Initiate and complete construction

Contact: Joel Howie, Project Manager:  503-742-4658 or

Consultant: David Evans & Associates Inc.

Things to be aware of:

  • From 1999 to 2008, 19 crashes have been reported at this bridge location. Of these, one crash resulted in a fatality near the southwest corner of the bridge.
  • A Road Closure is planned for Whiskey Hill Road during construction; length of closure is expected to be approximately 6 months.

Current Activities:

  • On-going design of the proposed bridge, responding to permit application requests for information, and initiating work with area property owners on right-of-way issues.


  • Federal Highway Bridge Program (HBP) Funding

You may be interested to know:

  • The Bridge is located on Whiskey Hill Road, spanning the Pudding River, which divides Clackamas and Marion Counties. The bridge connects highway 99E in the west to the Canby-Marquam Highway in the east. Whiskey Hill Road is a minor arterial that runs between the two highways and primarily serves the farming communities of both counties.
  • This bridge poses a unique safety risk due to the horizontal curve located on the western end, coupled with the poor sight distances from either roadway approach, as well as narrow roadway and a minimal shoulder. The curve is such that vehicles attempting to take the corner near the posted speed of 45 mph are forced to travel over the center line. These risks are accentuated by the high frequency of trucks passing over the bridge. The given conditions have resulted in numerous crashes.
  • The bridge has a sufficiency rating of 4.5. It is functionally obsolete due to the narrow roadway and is listed as structurally deficient largely due to the scour critical condition of the interior bents and the condition of the structure in the water. Scour of the channel has exposed the footing and seal of one of the main span bents and scour countermeasures at the abutments have been unsuccessful.

Project Exhibits: Click on image to see a larger version



Existing Bridge

Existing Bridge With Truck Traffic

Proposed Bridge Alignment

Proposed Bridge Plan and Elevation