Specifications include, but are not limited to: preliminary design, public involvement process, final design, and associated environmental & cultural services for rehabilitation or replacement of the existing bridges carrying ; Evaluate Spaulding Turnpike Interchange operations Create alternative analysis If deemed necessary, core and test the abutment, pier, and superstructure concrete Design a replacement or rehabilitation of the existing bridges that addresses the concerns associated with the bridges structure Environmental investigations to prepare and complete all appropriate environmental documentation and all necessary permitting Roadway Design associated with the bridge rehabilitation or replacement effort Traffic Control evaluation and design Provide final bridge load rating, including NHDOT Bridge Rating Form 4 Public Involvement support services, Public Hearing anticipated Re-establish existing Right-of-Way Construction support services.