I-12 DESIGN-BUILD

EAST BATON ROUGE AND LIVINGSTON PARISHES

Eustis Engineering Services, L.L.C. is the geotechnical engineer of record for the $100 million I-12 widening project between O’Neal Lane and Range Avenue in East Baton Rouge and Livingston Parishes, Louisiana. Eustis Engineering partnered with James Construction Group on this important Design-Build infrastructure project for the State of Louisiana. The project entails a 4.35-mile stretch of roadway and overpasses to be widened from four to six lanes (with shoulders) and the replacement of the Amite River Bridges with new 2,600-ft long superstructures.

The geotechnical investigation incorporated the AASHTO Load and Resistance Factor Design (LRFD) analyses into the geotechnical report for the bridge and overpass foundations. Geotechnical data from previous investigations by the LaDOTD were supplemented with new soil borings and cone penetrometer tests to reduce the geotechnical exploration costs incurred by the State.

Eustis Engineering performed a myriad of geotechnical services including pavement design, slope stability analysis of embankments, engineering analyses to determine the ultimate pile load capacities, static pile load testing, wave equation analysis of piles (WEAP), dynamic pile testing, and CAPWAP analyses during the driving of the job piles. This project is one of the first LRFD projects in terms of geotechnical design for LaDOTD. Through Eustis Engineering’s vast knowledge of driven piles in terms of design and pile installation, we have been able to provide superior service during construction. With the I-12 widening project, Eustis Engineering has proven their capabilities in terms of LRFD geotechnical design while keeping pace and maintaining quality in a design-build format.