Pudding River (Whiskey Hill Road) Bridge Replacement

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

Updated: 8/17/17

Status: Bridge is open to traffic! Some landscaping to occur in September or October

Schedule:

  • Minor punch list items occurring in August and September
  • Bridge is open to traffic!

Contact: Stan Monte, Project Manager, stanmon@clackamas.us, 503-742-4678

Consultant: David Evans & Associates Inc.

Contractor: Farline Bridge, Inc.

Things to be aware of:

  • Bridge is open. Miscellaneous work will continue for several weeks.

Current activities:

  • Landscaping and minor punchlist work.

Funding:

  • 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.
  • The old bridge posed 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 was such that vehicles attempting to take the corner near the posted speed of 45 mph were forced to travel over the center line. Those risks were accentuated by the high frequency of trucks passing over the bridge. The given conditions resulted in numerous crashes.
  • The old bridge had a sufficiency rating of 4.5. It was functionally obsolete due to the narrow roadway and was 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 had exposed the footing and seal of one of the main span bents and scour countermeasures at the abutments had been unsuccessful.

Project exhibits: Click on image to see a larger version

New bridge picture!
New bridge picture!

Placement of rebar cage in drilled shaft foundation
Placement of rebar cage in drilled shaft foundation

Deconstruction of old bridge
Deconstruction of old bridge

Construction of temporary work bridge
Construction of temporary work bridge

New bridge alignment
New bridge alignment

New bridge plan and elevation
New bridge plan and elevation