I-35 Capital Express South: 2026 Status, Cost & Completion Date
The i-35 capital express south project is an essential 6.7 mi highway reconstruction expanding Interstate 35 from SH 71/Ben White Boulevard to SH 45 Southeast in Travis County, Austin, Texas. Managed by TxDOT under a state and federal funding model, this major urban corridor investment adds two non-tolled high-occupancy vehicle managed lanes in each direction, reconstructs key bridges, builds bypass lanes, and upgrades safety along south Austin mobility corridors. The environmental review and official plans established clear right-of-way boundaries to minimize urban impact while enhancing long-term regional travel capacity. Featuring modernized intersection designs and enhanced bicycle and pedestrian facilities, the corridor addresses severe congestion across growing commercial and residential districts. Drivers can reference the published route map and updated alignment schematics as construction progresses toward the targeted completion date of late 2028. This critical initiative provides long-term congestion relief and multimodal infrastructure improvements for Central Texas regional travel.
Project information is compiled from official agency documents, federal records, environmental reviews, and verified public announcements.
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I-35 Capital Express South Route Map & Alignment
View and download the latest I-35 Capital Express South route map showing the project alignment, major junctions, regions covered and connectivity corridors.
Active Construction Packages
| Package | Section Covered | Contractor | Progress / Status |
|---|---|---|---|
| DB-2022-SOUTH | SH 71/Ben White Blvd to SH 45 Southeast | Fluor Corporation | Under Construction |
Key Engineering Structures & Viaducts
Slaughter Lane Overpass & Bypass Lanes
Construction of elevated bypass bridges and managed lanes to separate regional through-traffic from local traffic.
William Cannon Drive Bridge Reconstruction
Reconstruction of mainlane structures to accommodate managed HOV lanes and enhanced pedestrian paths.
Key Project Milestones Timeline
Environmental Clearance
TxDOT completed environmental studies and issued a Finding of No Significant Impact.
Contract Award & Construction Start
Fluor Corporation was awarded the design-build contract and ground construction commenced.
Target Completion
Projected final completion date for all managed lanes and structural bridge work.
Latest Project Developments
The I-35 Capital Express South construction and engineering execution continue to progress across monitored project packages under the direction of TxDOT.
Civil contractors and agency engineers are executing earthworks, structural deck installations, utility relocations, and system integration testing to ensure adherence to safety and operational schedules.
I-35 Capital Express South– Cost • Route • Timeline
| Parameter | Technical Details |
|---|---|
| Project Name | I-35 Capital Express South |
| Country / Geography | USA |
| Region / Corridor | Texas |
| Executing Agency | TxDOT |
| Route Designation | I-35 |
| Funding Model | State and Federal Highway Funds |
| Project Type | Interstate Highway Expansion |
| Total Length | 6.7 miles |
| Estimated Cost | $548M |
| Land Acquisition (%) | TBD% |
| Construction Progress (%) | TBD% |
| Expected Completion | 2028 |
Impact Zone: Affected Settlements
Places, towns, and villages located within the 1.5 km and 500m buffer corridors, as well as road crossing nodes along the project's alignment, identified via OpenStreetMap spatial analysis.
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Latest I-35 Capital Express South News & Developments (2026)
News Timeline (0 Articles)
I-35 Capital Express South Video Updates
Frequently Asked Questions (FAQ)
The I-35 Capital Express South is a major infrastructure project in the United States, forming part of the national infrastructure development program.
The I-35 Capital Express South is considered critical infrastructure for improving regional connectivity, reducing travel times, and supporting economic growth in the project corridor.
The target completion date for the I-35 Capital Express South is 2028. Completion may occur in phases as individual sections are finalized.
The estimated project cost for the I-35 Capital Express South is $548M. Cost figures are subject to revision based on scope adjustments and procurement outcomes.
Funding for the I-35 Capital Express South comes from a combination of federal government allocations, state contributions, and where applicable, public-private partnership arrangements. Specific funding breakdowns are disclosed in official project documentation.
The I-35 Capital Express South is implemented by TxDOT. Project oversight, funding disbursement, and construction monitoring are shared across these agencies.
The current status of the I-35 Capital Express South is: Under Construction. Construction progress and key milestones are tracked and updated regularly on this page.
The most recent developments for the I-35 Capital Express South are listed in the Latest Developments section on this page. Information is compiled from official agency announcements and verified public records.
The I-35 Capital Express South spans approximately 6.7 miles.
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