The first major part of the Highway 100 widening project is still a few weeks away. That’s according to MoDOT spokesperson Judy Wagner. The widening will take place to the north of the existing highway which means rock will need to be removed. You may have noticed trees being removed on top of the cliff between Jefferson and Lewis and Clark Drive. That is where the rock blasting will take place after a barrier wall is constructed. Wagner says the explosions will cause the highway to be shut down for about 10 to 15 minutes at a time. The work will be performed during the day for safety reasons. The rock removed during the blast will be used as fill west of Jefferson street.