I-35 at Williams Drive


The proposed project includes reconstructing the I-35 and Williams Drive interchange, adding operational improvements from North Austin Avenue to Rivery Boulevard, and extending the northbound frontage road from Williams Drive to the Lakeway Drive exit ramp.

Need & Purpose
  • Improve safety and mobility, including:
    • Address increased turning movements at Williams Drive intersection
    • Move north/south through-traffic from Williams Drive intersection to a new bypass lane under Williams Drive
    • Add a northbound frontage road between Williams Drive and Lakeway Drive exit ramp
Project Description
  • Reconstruct the Williams Drive interchange to a diverging diamond intersection (DDI)
  • Construct north and southbound intersection bypass lanes under Williams Drive bridge
  • Extend the northbound I-35 frontage road from Williams Drive to the Lakeway Drive exit ramp
  • Improve the existing southbound I-35 frontage road
  • Construct a northbound bypass lane on Austin Avenue at Williams Drive
  • Improve bicycle and pedestrian paths along the I-35 frontage roads
  • Project development funded by TxDOT
  • Construction funded by Capital Area Metropolitan Planning Organization and TxDOT
  • Construction cost: $70 million
  • Finalized schematic and environmental documentation: anticipated mid-2019
  • Begin Plans, Specifications and Estimates (PS&E): mid-2017
  • Complete PS&E: anticipated mid-2020
  • Construction letting: anticipated mid-2020
  • Construction start: anticipated late 2020
  • Construction completion: anticipated mid-2023

Project Vicinity Map

I-35 at Williams Drive


Public Information Officer

TxDOT Austin District
P.O. Box 15426
Austin, TX 78761-5426

(512) 832-7000