I-35 at 51st Street

Overview

The project added a collector-distributor road, or intersection bypass lane, to allow through-traffic to bypass the traffic signal and added a new roundabout at the intersection of the southbound frontage road of I-35 and 51st Street. Bicycle and pedestrian accommodations were also be improved along the I-35 southbound frontage road within the project limits.

Need & Purpose

• Improve safety and mobility

Project Description

• Realigned southbound frontage road
• New southbound intersection bypass lane
• New roundabout at the southbound frontage road of I-35 and 51st Street
• Reconfigured ramps
• Improved bicycle and pedestrian accommodations

Funding

• Project development funded by TxDOT
• Construction funded by Texas Clear Lanes Congestion Relief Initiative and city of Austin
• Construction cost: $16.5 million

Schedule

• Finalized schematic and environmental documentation: September 2015
• Begin Plans, Specifications and Estimates (PS&E): September 2015
• Complete PS&E: June 2016
• Construction letting: June 2016
• Construction start: October 2016
• Construction completion: June 2018

Get Involved

• February 12, 2015 - Open House

Downloads

• Schematic
• Fact Sheet
• Summary Analysis Report
• Comment and Response Report
• Construction Information

Videos

• Roundabout Visualization