State: KENTUCKY

Agency: KENTUCKY DEPARTMENT OF TRANSPORTATION - DISTRICT 12

Project and/or Route Name: GARRETT BRIDGE-KY. HWY. 80 RELOCATION OVER EXISTING KY.

HWY. 80, RIGHT FORK OF BEAVER CREEK AND C & O RAILROAD,

FLOYD COUNTY

Dates: 1975 - 1980

Rural and/or Urban: RURAL

Length: 975 FEET

Type of Improvement: HIGHWAY RELOCATION

Firm's Structural Proj Mgr: ROBERT B. QUISENBERRY,P.E.,L.S.,V.P.-STRUCTURES, FIRM PRINCIPAL

Firm's Structural Proj Engr: PAUL L. HENDRICK, P.E., PROJECT DESIGN ENGINEER

Firm's Roadway Proj Engr: WILLIAM B. WEST, P.E., L.S., SR. VICE PRESIDENT, FIRM PRINCIPAL

Project Description:

Existing Ky. Hwy. 80 was a narrow mountain road connecting the cities of Hazard and Watergap in Eastern Kentucky. When the Kentucky Department of Transportation decided to relocate and four-lane this entire stretch, Johnson, Depp & Quisenberry was selected to design a six mile portion of the road. The rough mountainous terrain required many bridges and culverts. The one described here was the largest of the four bridges on JDQ's section. The Garrett Bridge carried four lanes of traffic and had a total length of 975 feet. The length required 10 spans at 105', 105', 105', 105', 105', 105', 105', 78', 78' and 78'. The bridge was located in a curved alignment. The framing consisted of Type 4 PCI-beams with a composite concrete deck. Four expansion joints were required and special elastomeric bearings were needed at the abutments to accommodate large thermal movements. The piers were open column type and pile bent abutments were used. Crash walls were used at the piers adjacent to the railroad. Plans were completed in 1977 and construction was complete in 1980. The approximate cost of the bridge was $4,000,000.

The Consultant was responsible for:

1. Providing surveys.

2. Final Roadway and Structure construction plans.

3. Construction supervision and inspection during construction.

Subconsultant was responsible for:

1. Geotechnical investigation.

2. Foundation recommendations.