RM 620 Overpass at Railroad/Chisholm Trail Project
Location:  RM 620 from IH 35 to Deep Wood Drive
Description: The City of Round Rock, TxDOT, and Williamson County are partnering together on this project on RM 620 to add overpasses at Chisholm Trail and Lake Creek Drive, a roundabout at RM 620 and Chisholm Trail beneath the new overpass, widened lanes, new frontage roads, and will improve bicycle and pedestrian accommodations. The overpasses will separate local traffic from through traffic and allow through traffic to pass over the railroad tracks. 

Design was completed in fall 2017 by Halff Associates. A groundbreaking ceremony was held on March 11, 2020. The contractor for the project is Bridges and Roads, LLC. Construction is anticipated to be complete by the end of 2022, weather permitting. 

Beginning Monday, July 13 at 7 a.m., Chisholm Trail will be closed between RM 620 and Sunset Drive for approximately three weeks to allow crews to install water utilities as part of the RM 620 Roundabout project. During this time, through traffic will be detoured to the northbound and southbound I-35 frontage roads and Sunset Drive to access Chisholm Trail to the north. Please see the detour map for further details. This work is expected to be complete in early August, weather permitting.

For updates, click here or go to https://my35construction.org/projects/620-Roundabout.

Contact Email [email protected] or phone 512-943-1195