I-5 - Skagit River Bridge Replacement - Permanent replacement span

Permanent span installed

After the I-5 Skagit River Bridge was struck by an over-height load and collapsed into the river on May 23, 2013, two temporary I-5 spans were installed, each carrying one direction of traffic. The spans opened on June 19, 2013, to replace the collapsed section.
This restored the interstate and ended many of the detours through Burlington and Mount Vernon. Weight limits on the temporary bridge meant some large loads still needed to use detours through Burlington and Mount Vernon.

WSDOT contracted with Max J. Kuney Construction and Parsons Brinckerhoff to design and build the permanent replacement span for the I-5 Skagit River Bridge. The replacement span was built over the Skagit River just west of the temporary spans. When it was complete, contractor crews worked with bridge mover Omega Morgan and several specialized subcontractors to use a complex system of hydraulic jacks, Teflon pads and long steel rails to lift and remove the temporary spans, then position the new permanent span. The replacement span reopened the afternoon of Sept. 15, 2013.  

The permanent replacement span restored I-5 to the regular speed limit of 60 mph. It carries the same weight loads as the original span, eliminating truck detours that added time and cost to freight movement.