Water & Sewer Line SR411 Bridge Crossing

Client—City of Castle Rock, Washington

WSDOT is replacing the decking on the SR411 bridge crossing the Cowlitz River. As a part of this project, Castle Rock is upgrading their water and sewer line attached to the bridge supports. Gibbs & Olson provided the water and sewer pipeline designs that were incorporated into the WSDOT drawings and specifications. Gibbs & Olson will also provide limited construction phase services (submittal review and responding to contractor’s questions). The design work required closely coordinating with WSDOT to incorporate the pipeline designs into WSDOT’s design drawings and contract documents for the bridge deck replacement.