BATON ROUGE, La. (AP) — Construction work on Interstate 10 in southwest Louisiana starts in a week.

The Louisiana Department of Transportation and Development announced that maintenance work on bridge expansion joints in Lake Charles to upgrade the interstate's handling of traffic will last about four months.

The project costs $8.5 million.

Motorists are being advised to use Interstate 210 as a detour while the work takes place, or other local highways.

To aid in traffic flow, the transportation department will use message boards and flashing signs to provide real-time traffic information to drivers, increase Motorist Assistance Patrol coverage and employ an aggressive repair schedule.