State:	KENTUCKY
Agency:	KENTUCKY TRANSPORTATION CABINET - DISTRICT 3
Project and/or Route Name:	INTERSTATE 65 - TWIN BRIDGES OVER US 68 / KY 80 WARREN COUNTY
Dates:	1998-1999
Rural and/or Urban:	RURAL
Length:	44.54 m (146.1 FEET) - BRIDGE
Type of Improvement:	ROADWAY AND BRIDGE WIDENING / REPLACEMENT
Firm's Project Manager:	MICHAEL G. BRUCE, P.E.
Firm's Project Engineer:	THOMAS D. WILLIAMS, P.E.
Firm's Structural Proj. Engr:	DAVID C. DEPP, P.E.
Project Description:
This project, located near Bowling Green, Kentucky, involved the widening of Interstate 65 from 4 to 6 lanes, with consideration of a future 8 lane roadway. JD&Q's section of the project involved five (5) bridges, including the widening and replacement of the I-65 Northbound and Southbound bridges over US 68 / KY 80. After considering several alternatives, it was decided to replace the existing bridges in order to provide proper superelevation transitions and uniform structure framing. The existing twin 2-lane bridges were widened from 12.72m (41.73 ft) to 19.50m (64.0 ft), and utilized staged construction to maintain traffic in both directions on the Interstate. The new bridges are 44.54m (146.1 ft) long, including 3-spans with lengths of 12.2-18.3-12.2 meters (40.0-60.0-40.0 feet), and are framed using Type 2 PPC I-beams with a composite concrete deck. The substructures consist of semi-integral end bents (modified existing end bents) and multi-column piers (modified existing piers), both founded on steel H-piles driven to rock. Estimated construction cost for both bridges is $980,000 ($52/sf). Construction is scheduled for 2002.
The Consultant (Johnson, Depp & Quisenberry) was responsible for:
1. Project Coordination between consultant team 2. Field Surveys 3. Roadway and Drainage Design (Preliminary and Final Plans, Specifications and Cost Estimates.) 4. Structure Design (Preliminary and Final Plans, Specifications and Cost Estimates.)
The Sub-Consultant (Florence and Hutcheson Inc.) were responsible for:
1. Geotechnical Data