The project is evaluating proposed roadway improvements at LA 3002 (South Range Avenue) and Interstate 12 in Livingston Parish. The goals for the proposed improvements are reducing congestion, enhancing safety and improving mobility on Range Avenue. Livingston Parish citizens have a very important role in helping the Louisiana Department of Transportation and Development (DOTD) determine the best design alternative for achieving the purpose and needs for the project. The existing diamond interchange at South Range Avenue is the only access from I-12 to the City of Denham Springs. Redesign of the existing diamond interchange into a diverging diamond interchange (DDI) is one of the alternatives to be evaluated for improving traffic operations in the area. Other reconfigurations being considered are split-diamond interchanges (SDI) that would move the eastbound on-ramp and westbound off-ramp to LA 16 (Pete’s Highway) with connections to Range Avenue through access-controlled collector-distributor (CD) roads. Components of the SDI alternatives include roundabouts instead of conventional intersections and relocation of the Pete’s Highway bridge structure that overpasses I-12.
Purpose and Need for the Project.
The purpose of the project is to relieve traffic congestion and improve operations on LA 3002 (South Range Avenue) and its intersections in the vicinity of the I-12 interchange.
Recent Roadway Improvements in the Project Area.
I-12 was widened from four to six lanes in 2012 and ramp metering was installed to maintain flow on the mainline of the interstate. At that time the westbound on-ramp and the eastbound off-ramp were widened and the signals were synchronized. Bass Pro Boulevard was built in 2010 connecting South Range Avenue with 4H Club Road.