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I-35 at FM 3406

Schedule

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

Funding

  • Construction cost: $12.4 million

Contractor

  • Flatiron Constructors Inc.

Project FAQs

What is included in this project?

The FM 3406 (Old Settlers Boulevard) improvement project will improve mobility, safety and connectivity for all modes of transportation along and across I-35. Work includes:

  • replacing and widening the Old Settlers Boulevard bridge
  • constructing two new U-turn bridges, one in each direction
  • making bicycle and pedestrian enhancements within the project limits
Why is TxDOT performing this work?

This project is designed to reduce bottlenecks and improve travel times at the I-35 and Old Settlers Boulevard intersection in Round Rock. The addition of U-turn bridges and added left-turn lanes on the bridge will help traffic to flow more smoothly, improve travel times and enhance safety.

What are the construction phases for this project?

Work on this improvement project will take place in four phases:

  • Phase I work includes initial clearing and subgrade bridge work
  • Phase II work includes constructing retaining walls near Old Settlers Boulevard, completing the southbound to northbound U-turn bridge, preparing for the FM 3406 westbound detour and performing frontage road work
  • Phase III work includes detouring westbound FM 3406 traffic on the new U-turn bridge, closing FM 3406 bridge to eastbound traffic and finishing frontage road work
  • Phase IV work includes opening FM 3406 bridge to two-way traffic, opening the northbound to southbound U-turn bridge, removing temporary westbound detour from southbound to northbound U-turn bridge, completing construction of the median on Old Settlers Boulevard, as well as performing final paving operations for the entire project

Project Map

Map of I-35 at FM 3406

Milestones

Complete

Beginning

  • Initial clearing and subgrade bridge work
Complete

Wall Construction

  • Includes constructing retaining walls near Old Settlers Boulevard, completing the southbound to northbound U-turn bridge, preparing for the FM 3406 westbound detour and performing frontage road work
Complete

Detouring Traffic

  • Includes detouring westbound FM 3406 traffic on the new U-turn bridge, closing FM 3406 bridge to eastbound traffic and finishing frontage road work

Openings and Removals

  • Opening FM 3406 bridge to two-way traffic
  • Opening the northbound to southbound U-turn bridge
  • Removing temporary westbound detour from southbound to northbound U-turn bridge
  • Completing construction of the median on Old Settlers Boulevard
  • Performing final paving operations for the entire project

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