Specifications include, but are not limited to: The Port of Walla Walla (Port) in partnership with the City of Walla Walla (City) and Walla Walla County (County) is seeking responses to this solicitation for professional services for the US Highway 12 – N. Clinton Street Intersection Project, in the City of Walla Walla. Project tasks will include, but are not limited to, survey, geotechnical investigation, community engagement, design, permitting, stakeholder coordination, reporting, analysis, and right of way acquisition as required. The project is located at the intersection of US Highway 12 and North Clinton Street, in the City of Walla Walla. The Port plans to design and construct a full grade-separated interchange and related improvements at the intersection, in accordance with WSDOT and City of Walla Walla Standards. The professional services will include WSDOT coordination, including ICE approval, permitting, 60% intersection design, utility layout, structural bridge design, street lighting, ADA and non-motorized improvements for access and safety for all modes of travel, analyzing and accommodating expected levels of freight and motor vehicle demand, and acquisition of needed right of way.