Services | Palmer Engineering Lexington, KY 40507

Construction

Landscaping and Fencing

Driveways
Palmer Engineering provided civil engineering services for a proposed emergency operations center in Winchester, KY. Design services included site layout; site grading for parking, driveways, and sidewalks; erosion control; and utility layout.
Retaining Walls
The 790-foot structure consists of five spans and snakes along the mountainous terrain. The bridge has a precast concrete segmental box girder superstructure and precast concrete segmental piers. The abutments utilize cast-in-place concrete with stepped footings on excavated benches to fit the steep topography of the site. The rugged terrain requires the use of long retaining walls, some in excess of 40 feet tall, along the approaches to the bridge. The design team developed innovative procedures to address the sliding and overturning design concerns for the CIP walls that include utilizing rock anchors through the footings to assist with the lateral stability. The general approach to the foundations for the project was to provide a foundation scheme that minimizes the footprint and disturbance to the site while being robust and reliable.

Exterior

Decks
Reinforced concrete-filled steel pipe piles support the new bridges, which are founded on limerock. The bridge decks have a 6.5” nominal thick deck of reinforced concrete that was poured on nine 12” thick prestressed concrete slabs units (PSUs), all of which were cast full span length. An as-built Load Rating was performed on both bridges after construction.

General

Masonry
The Foothills Parkway incorporates specific aesthetic requirements that facilitate continuity along the length of the roadway. The roadway approaches and the bridge continue the same aesthetic stone masonry look and characteristics of other Foothills Parkway bridge structures located near the proposed project site.