As the Prime Consultant, KS Associates led the design of the rehabilitation of two concrete arch bridges (SFN 1801740 and SFN 1801775) over Mill Creek on Broadway Ave. (SR-14). The scope of services included developing preliminary and final designs including aesthetic features; surveying and Right-of-Way plan development; utility coordination; preparing construction plans, specifications, and cost estimates; and providing consultation during construction.
The bridges were constructed in 1917. In 1934 they were widened to accommodate sidewalks. The existing roadway width is 47’-1” curb-to-curb. This accommodates two 12′ lanes and two 11′ lanes with 6 ½” curbed shoulders. The two 12′ lanes are required because SR-14 is a federal aid primary route. The roadway has been paved on several occasions and the original curb with 6” reveal became less than 2” tall.
KS Associates conducted a feasibility study to determining a cost-effective way to extend the useful lives of the structures. The structures were designed to meet current roadway, bridge, railing, and approach guardrail standards.
Utility coordination was paramount. The project successfully caused no disturbance to a utility bay serving the existing structures, which was in close proximity to the sidewalk and arch repairs. Aesthetics was also a focus for the client. KS Associates designed the parapet to accommodate stone form liners and specified the colors of the concrete parapet and metal railing to complement the natural setting.
This $2.5 million project was one of ODOT’s earliest DBE Development projects, incorporating DBE firms for meaningful project participation to expand the pool of prequalified DBE engineering firms. KS Associates’ DBE teaming partner was Somat Engineering of Ohio, Inc. Under the guidance and direction of KS Associates, Somat provided highway engineering, hydraulic engineering, and bridge inspection services. Somat’s participation in this project enabled the firm to obtain ODOT Level I Bridge Inspection prequalification.
