JWF undertook this project to provide the replacement of two freeway overpasses and improvements to the roadway under crossing and surrounding streets in southern Oregon. The Company removed the existing overpass and constructed the new overpasses and the associated retaining walls. Additionally, JWF designed and built a guard to protect pedestrian and vehicular traffic in the construction area. The Company underwent a process of experimentation to eliminate the uncertainties that existed including:

  • The optimal method for constructing the retaining wall;
  • The optimal location for the drain pipe; and
  • The optimal method for extending the length of the piles.

To determine the optimal method for constructing the retaining wall, the Company assessed performing the construction in stages due to the type of wall, allowing both pedestrian and vehicular traffic to be rerouted. Additionally, the Company evaluated various locations in the wall for the drain pipe which allowed water to drain from the wall backfill to the curb inlet. JWF determined the optimal location which provided proper drainage, preventing any threat to the structural integrity of the wall from excessive water buildup.

Additionally, the piles did not meet resistance at the elevation expected during construction. The Company determined a method for adding additional length to the piles. Codes required piles with joints to provide the same structural stability as a single pile. JWF evaluated various welding methods to determine the most feasible method for the site conditions.

Also included were unique architectural features which represent the community including a black bear, eagle and salmon sculpted from concrete and stained with natural colors to match the surrounding area. The MSE walls and bridge railing were finished with a stone block feature that enhanced the character of the community. This additional work was added post bid through a partnered collaboration between ODOT and JWF.


Oregon Dept. of Transportation