All westbound I-10 traffic near Highland will shift to new lanes in June

Beginning in June, all westbound Interstate 10 traffic between Bayou Manchac and Highland Road in Baton Rouge will shift to new travel lanes as the “On the Greaux” interstate widening project hits a major milestone.

On the Greaux is a Louisiana Department of Transportation and Development project to widen I-10 from four to six lanes between Baton Rouge and La. 73 in Ascension Parish. Crews are finishing concrete, rail and striping work to shift traffic to the new lanes and over a new bridge that passes over Highland Road. The shift most likely will occur in early June, depending on the weather.

“You’re going to see a different traffic pattern, particularly if you are one of the 100,000 people who are accustomed to driving through this work zone on a daily basis,” said DOTD Secretary Dr. Shawn Wilson. “As we do these lane shifts, be alert, be aware, and pay attention to 511 LA and to be aware when you get out there.”

The shift will occur just west of the I-10 Bayou Manchac bridge. All westbound traffic will be shifted left to newly constructed lanes in the footprint of the median between the westbound and eastbound traffic lanes. Vehicles will still be able to exit at Highland Road, and interstate traffic will continue on the new lanes over a new overpass above Highland. Once traffic clears the new overpass, vehicles will be shifted back to the current configuration.

Watch this short video to see an animation of the shift in action.

The new overpass at Highland, which will replace the two existing overpasses, is being built in three segments to allow a continuous flow of traffic during construction. Each segment will be tied together, shoulder-to-shoulder, during construction, and the new, higher overpass eventually will carry all six lanes of interstate traffic.

After June’s traffic shift occurs, crews will begin demolition on the existing westbound Highland overpass to make way for the second segment of the new overpass. That demolition work will force nighttime closures of Highland Road under the interstate. All closure dates, times and detour information will be posted to www.onthegreaux.comseveral days ahead of time.

After the new westbound overpass is completed, both eastbound and westbound traffic will be shifted onto both of the new overpass sections to make way for demolition of the existing eastbound overpass. Building the new eastbound overpass will be one of the final tasks in completing the interstate widening project. The entire project should be completed in summer of 2020.

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