The US 90 Berwick exit...and the end of the US 90 freeway segment. For now. Plans for the upgrade of the remainder of US 90 to Lafayette (as part of I-49 South) are coming along, and only a stable source of funding is all left before construction can commence.
A BGS of the US 90 exit with LA 182 northwest of Houma. Prior to the construction of the freeway section between Morgan City and Raceland, LA 182 used to carry US 90; this transition occurs almost all the way to Lafayette. It may be possible that when the rest of I-49 South is completed, then US 90 may be returned to its old ROW with LA 182...but that is probably unlikely since that would conflict with the usual tradition of LaDOTD.