TRAFFIC ALERT: Road Construction Update For IH-35 Corridor & Downtown Austin

While construction is tough on everyone, TxDOT is trying to do everything it can to minimize disruptions. TxDOT knows you’ve got to get where you need to go.

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The intersection of FM 3406 and the I-35 frontage roads is being improved, and the FM 3406 bridge over I-35 is being reconstructed. 

PROJECT ACTIVITY

Closures are weather permitting and updated on Tuesdays and Fridays.

• Southbound I-35 reduced to one lane under FM 3406 bridge
• Nightly from 9 p.m. until 5 a.m. Sunday, June 25 until Thursday, June 29

FUNDING

• Construction cost: $12.4 million

SCHEDULE

• Construction start: March 2017
• Anticipated construction completion: Spring 2019, weather permitting

CONTRACTOR

• Flatiron Constructors Inc.

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Improvements include the reconstruction of the Oltorf Street bridge, improving entrance/exit ramps and frontage roads, constructing new extended entrance/exit lanes for mainlanes and ramps, and adding U-turns in both directions at Oltorf Street. Bicycle and pedestrian enhancements will also be made along the I-35 frontage roads in each direction within the project limits.

PROJECT ACTIVITY

Closures are weather permitting and updated on Tuesdays and Fridays.

• Southbound I-35 right lane closed between Algarita Ave & Woodward St exit. The entrance ramp from Woodland Ave will also close.
• 10 p.m. Sunday, June 25 to 6 a.m. Monday, June 26
• Southbound I-35 frontage road left lane closed between Oltorf St & the temporary exit ramp
• 9 a.m. Monday, June 26 to 3 p.m. Tuesday, June 27
• Southbound I-35 reduced to one lane between Holly St and Woodland Ave. Entrance ramp from Riverside Dr closed Thursday.
• Nightly from 10 p.m. until 6 a.m. Wednesday, June 28 through Thursday, June 29
• Northbound frontage road right lane closed between Woodward St & the next entrance ramp
• Daily 9 a.m. until 3 p.m. Monday, June 26 through Friday, June 30
• Alternating lane closures on Oltorf St in both directions across I-35
• Nightly from 8 p.m. until 5 a.m. Monday, June 26 through Wednesday, June 28

CONSTRUCTION PHASING:

• Phase 1: (currently in this phase)

° Widen northbound and southbound I-35 mainlanes for extended entrance/exit lanes

° Begin northbound frontage road and Oltorf Street entrance ramp improvements

• Phase 2:

°Reconstruct Oltorf Street bridge and add new U-turns

• Phase 3:

° Construct southbound entrance and exit ramps south of Oltorf Street

° Southbound frontage road improvements

• Phase 4:

° Construct southbound entrance ramp north of Oltorf Street

° Complete frontage road construction

° Final paving operations

FUNDING

• Construction cost: $42.6 million (Congestion Relief Initiative)

SCHEDULE

• Construction start: February 2017
• Anticipated construction completion: Winter 2019/2020, weather permitting

CONTRACTOR

• OHL, USA, Inc.

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The project will reconstruct the bridge structures at Stassney Lane and William Cannon Drive, as well as the frontage road bridge over Williamson Creek. New U-turn bridges will be added in both directions at Stassney Lane and William Cannon Drive, and the I-35 mainlanes will be widened to incorporate shoulders and extended entrance/exit lanes to allow for better merging. Bicycle and pedestrian enhancements are also being made, and new safety lighting is being installed. Click here to view the I-35 from Stassney Lane to William Cannon Drive Smart Work Zone Traffic Camera.

PROJECT ACTIVITY

• Multiple closures southbound I-35 between Colonial Park Blvd & Boggy Creek. May be reduced to one lane at times. Entrance ramp near Williamson Creek & William Cannon exit & entrance ramps will close at times.
• Nightly from 10 p.m. until 6 a.m. Sunday, June 25 through Tuesday, June 27
• Northbound I-35 left lane closed between Boggy Creek & Teri Ln
• Nightly from 10 p.m. until 6 a.m. Sunday, June 25 through Tuesday, June 27
• Northbound I-35 frontage road right lane closed approaching Williamson Creek
• Daily 9 a.m. until 3 p.m. Monday, June 26 through Tuesday, June 27
• Southbound I-35 exit ramp to SH 71 closed at times. Traffic should detour to the frontage road.
• 10 p.m. Monday, June 26 to 5 a.m. Tuesday, June 27
• Northbound I-35 frontage road right lane closed between Nelms Rd & William Cannon
• Daily 9 a.m. until 3 p.m. Wednesday, June 28 through Friday, June 30
• Southbound I-35 left lane closed between Colonial Park & Boggy Creek
• Nightly from 10 p.m. until 6 a.m. Wednesday, June 28 through Thursday, June 29
• Multiple closures northbound I-35 between Boggy Creek & Teri Ln. May be reduced to one lane at times. Expect the ramps between Slaughter Ln & Teri Ln to close at times.
• Nightly from 10 p.m. until 6 a.m. Wednesday, June 28 through Thursday, June 29

CONSTRUCTION PHASING

• Phase 1: (currently in this phase)

° Pave inside median area

° Construct extended entrance/exit lanes

° Widen mainlanes and add shoulders

° Build U-turn bridges at Stassney Lane and William Cannon Drive

• Phase 2:

° Construct new Stassney Lane bridge

• Phase 3:

° Construct new William Cannon Drive bridge

° Final paving operations

FUNDING

• Construction cost: $78.8 million (State Proposition 1)

SCHEDULE

• Construction start: July 2016
• Anticipated construction completion: Winter 2019/2020, weather permitting

CONTRACTOR

• OHL, USA, Inc.

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Frontage road paving northbound and southbound I-35 from SH 45 North to Rundberg Lane.

PROJECT ACTIVITY

Closures are weather permitting and updated on Tuesdays and Fridays.

• Southbound I-35 frontage road right lane closed between Parmer Ln & Rundberg Ln. Locations will change nightly. Exits 245-241 will closed as needed.
• Nightly from 9 p.m. until 5 a.m. Sunday, June 25 through Tuesday, June 27
• Northbound I-35 frontage road right lane closed at The Lakes Blvd
• Nightly from 9 p.m. until 5 a.m. Monday, June 26 through Friday, June 30
• Northbound I-35 frontage road left lane closed between Rundberg Ln & Howard Ln. Locations will change nightly. Exits 243 through 245 will close as needed.
• Nightly from 9 p.m. until 5 a.m. Wednesday, June 28 through Thursday, June 29
• Various closures southbound I-35 frontage road between SH 45N/Louis Henna Blvd & Parmer Ln. All ramps will close briefly from north to south as needed.
• 9 p.m. Thursday, June 29 to 5 a.m. Friday, June 30
• Various closures southbound I-35 frontage road between Yager Ln & Wren Ave
• 9 p.m. Thursday, June 29 to 5 a.m. Friday, June 30

D o w n t o w n   A u s t i n   L a n e   C l o s u r e s

• Southbound I-35 reduced to one right lane between MLK Blvd & exit 234B for 8th-3rd Sts — 12 a.m. Thursday, June 29 to 5 a.m. Friday, June 30
• Southbound I-35 reduced to one lane between 15th St exit ramp & 4th St. The entrance ramp from 6th St will also close. — 12 a.m. Wednesday, June 28 to 5 a.m. Thursday, June 29
• Southbound I-35 right lane upper deck closed between 38 1/2 St & Concordia Ave — 9 p.m. Wednesday, June 28 to 12 a.m. Thursday, June 29

My I35 Traffic Alerts are provided by Central Texas Regional Mobile Authority (CTRMA) & TxDOT.