Wentzville, MO (KSDK) - Governor Jay Nixon will join other state, county and city officials at the GM Wentzville Assembly Plant Monday morning for to celebrate a massive expansion of the plant.

Construction is set to begin on a $380 million expansion of the GM Wentzville plant. The plans were announced last November.

The plant additions will be used for the production of the newly designed Chevrolet Colorado pick-up truck.