KS Associates is the prime consultant for this project, leading design services to rehabilitate two concrete arch bridges (SFN 1801740 and SFN 1801775) over Mill Creek on Broadway Ave. (SR-14). The scope of services includes developing preliminary and final designs; surveying, 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 and were widened to accommodate sidewalks in 1934. The existing roadway width is 47’-1” curb-to-curb. This accommodates two 12-foot lanes and two 11-foot lanes with 6 ½” curbed shoulders. The two 12-foot lanes were 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 is now less than 2” tall.
KS Associates conducted a feasibility study to determine the most cost-effective way to extend the useful lives of the structures. Our bridge team evaluated several repair strategies, comparing the advantages and disadvantages of each. During preliminary design, KS Associates evaluated methods to bring the structures up to current roadway, bridge, railing, and approach guardrail standards. Stage 3 plans were submitted in February 2018 and the project is anticipated to be fully constructed in 2021.
This 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.