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.
Status: In Construction
- Construction: Late May 2016 – June 2017
- Road closure: May 31, 2016 – Jan. 31, 2017
Contact: Stan Monte, Project Manager: 503-742-4678
Consultant: David Evans & Associates Inc.
Contractor: Farline Bridge, Inc.
Things to be aware of:
- Road is closed at bridge. A signed detour is in place.
- New bridge shaft installations
- Retaining wall installation
- Starting mid-November with beam setting and deck construction.
- Federal Highway Bridge Program (HBP) and Federal Surface Transportation Program (STP) 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
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