Drivers in Round Rock should expect construction on RM-620 Thursday night.

This segment of roadway is a Williamson County project to widen the roadway from four to six lanes and will include new curb, gutter, and a raised median.

The work will happen on the westbound lanes of RM-620 from Deep Wood to just west of Wyoming Springs.

It all starts tonight, March 1 at 8 p.m. and will continue until 5 a.m. Friday, March 2.