Texas Department of Transportation is doing a study on RM 620.
Ranch-to-Market Road (RM) 620 runs 23.2-miles from SH 71 in Bee Cave, Travis County to I-35 in Round Rock, Williamson County. The road has major intersections with SH 71, RM 2222, US 183, SH 45 and I-35.
This feasibility study will only deal with an 18.8-mile segment from SH 71W to US 183N.
Click here to go to their website for information.