I-35 Capital Express South

I-35 Capital Express South Map

Project Description

Lack of mobility on I-35 threatens the economic livelihood of our city and our state. Improvements are needed due to population and employment growth, which have caused increased congestion in the area.

The I-35 Capital Express South project proposes to add two non-tolled high-occupancy vehicle managed lanes in each direction along I-35 from SH 71/Ben White Boulevard to SH 45 Southeast.

The project will also reconstruct bridges, add pedestrian and bicycle paths, and make additional safety and mobility improvements within the project limits. View the fact sheet.


*Subject to change


Environmental study and schematic design


Final design


Anticipated construction start


  • Project development and construction funded by TxDOT
  • Estimated construction cost: $300 million



Past Events

I-35 Capital Express South Virtual Stakeholder Meeting

Date: Dec 3, 2020 to Dec 18, 2020

The purpose of the virtual stakeholder meeting is to gather input on proposed improvements on I-35 from SH 71/Ben White Boulevard to SH 45 Southeast.

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I-35 Capital Express South Project Open House

Date: Oct 17, 2019 to Nov 1, 2019

An open house was held for the South project on Oct. 17, 2019 from 5:30–7:30 p.m. In addition, a virtual open house was available from Oct. 17, 2019–Nov. 1, 2019.

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Current I-35 Construction

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