Featured Project

Waggoner is the prime consultant for this Louisiana Department of Transportation and Development (LaDOTD) project which includes topographic and control surveying, interstate highway design, diamond interchange design with roundabouts at the ramp termini and roadway improvements of Interstate 10 (I-10) from the LA 347 interchange continuing eastward to the Atchafalaya Floodway Bridge in St. Martin Parish, Louisiana.

Waggoner performed the topographic survey which includes four bridges, a wooded median, drainage structures and outfalls, interchanges, roadways along LA347 and LA352, and utility crossings. LaDOTD survey and linework codes were used in the field. Waggoner used Inroads Survey, CADconform and LaDOTD codes to prepare the topographic map and required files for this project.

The interstate design includes three lanes in the westbound direction and two lanes in the eastbound direction separated by either a median barrier or a wooded median. A complex sequence of construction was developed to allow for construction of new ramp termini at LA 347 with roundabouts and to handle traffic at the Atchafalaya Floodway Bridge for approach slab construction.

Waggoner coordinated closely with LaDOTD’s Bridge Design section which was responsible for bridge widening at two locations. Detailed hydraulic analysis of the outfall channel adjacent to LA352 including HEC-RAS modeling was conducted by Waggoner to alleviate flooding problems at the interchange.

Waggoner assembled the multi-discipline plan set, quantities, pay items, and worked with LaDOTD Project Management to develop the estimated construction costs. Waggoner is currently providing construction support.