The roadway widening project stretched 2.74 miles from Cornerwood Drive to Deep Wood Drive. That section of RM 620 was widened from a 4-lane highway to a 6-lane highway including a raised median, curb and gutter.
WilCo & @TxDOTAustin will celebrate the completion of RM 620 improvement project at 9:30 am TODAY! Project is 2.74 miles from Cornerwood to Deep Wood. Join us in the parking lot at 1880 Round Rock Ave. @TrafficSaarFOX7 @mandydugan @AnavidReyesKVUE @SophiaStamas @LeAnn_Wallace
— Williamson County (@wilcogov) July 23, 2018
According to county officials, the project additionally included left and right-hand turn lanes, culverts, water-quality facilities, retaining walls and construction of sidewalk along parts of RM 620.
In all, the RM 620 widening project cost $6.3 million and took 17 months to complete.
TxDOT will now move to re-stripe the existing four-lane section to a six-lane section from Cornerwood Drive to Wyoming Springs Drive, per county officials. That work is scheduled to finish before the end of the month.
