San Antonio, Texas, December 10, 2025
The Loop 1604 North Expansion project in San Antonio aims to alleviate traffic congestion significantly and enhance commute efficiency. The initiative involves widening Loop 1604 from four to ten lanes, adding HOV lanes, and constructing a new stack interchange at Loop 1604 and I-10. Upon completion, it’s projected to reduce commute times by up to 76% by 2045, supporting the region’s growing population and economic development.
San Antonio, Texas – December 10, 2025
Transforming Commutes: The Loop 1604 North Expansion Project
The Loop 1604 North Expansion project in San Antonio is set to significantly reduce commute times, with projections indicating up to a 76% decrease by 2045. This extensive infrastructure development aims to alleviate congestion and enhance traffic flow along a 23-mile stretch of Loop 1604, extending from State Highway 16 (Bandera Road) to Interstate 35.
Project Overview
The Loop 1604 North Expansion project involves widening Loop 1604 from four to ten lanes, incorporating high-occupancy vehicle (HOV) lanes, and constructing a five-level stack interchange at the Loop 1604 and I-10 junction. This interchange, known as the Fiesta Stack, is designed to improve connectivity and accommodate the growing traffic demands of the region. The project is divided into six segments, with various construction activities currently underway. Notably, Segment 1, which spans from SH 16 to I-10, is nearing completion, with an estimated 91% progress as of May 2025. The remaining work focuses on paving operations and finalizing the Leon Creek frontage road bridge, with completion expected by late summer 2025.
Recent Developments
As of October 2025, five out of the eight planned flyover ramps at the Loop 1604 and I-10 interchange have opened, facilitating smoother connections between the two highways. The latest addition, a flyover ramp connecting I-10 westbound to Loop 1604 eastbound, became operational on October 5, 2025. These flyovers are part of a broader strategy to enhance traffic flow and reduce congestion in the area, demonstrating a commitment to addressing transportation challenges while bolstering local business dynamics.
Impact on Commute Times
Upon completion, the Loop 1604 North Expansion is projected to significantly improve commute times for San Antonio residents. By 2045, travel times along the corridor are estimated to be reduced by as much as 76%. This improvement addresses one of the most congested routes in the state and is expected to enhance daily commutes significantly, thereby contributing to the overall efficiency of the region’s essential transportation network.
Project Timeline
The expansion project progresses in phases, with various segments at different stages of completion. The timeline for each segment is as follows:
- Segment 1 (SH 16 to I-10): Completion expected by late summer 2025.
- Segment 2 (Loop 1604 and I-10 Interchange): Scheduled for completion by late 2026.
- Segment 3 (I-10 to US 281): Completion anticipated by mid-2026.
- Segment 4 (US 281 to Redland Road): Expected to conclude by late 2027.
- Segment 5 (Redland Road to Judson Road): Completion projected for 2028.
- Segment 6 (Judson Road to I-35): Scheduled to finish by 2028.
These developments reflect a comprehensive effort to enhance transportation infrastructure in San Antonio, aiming to meet the needs of a growing population and improve the quality of daily commutes for residents. The anticipation building around the project illustrates a commitment to elevating economic prosperity through improved accessibility.
Frequently Asked Questions (FAQ)
What is the Loop 1604 North Expansion project?
The Loop 1604 North Expansion project is a major infrastructure development in San Antonio, Texas, aimed at widening Loop 1604 from four to ten lanes, adding high-occupancy vehicle (HOV) lanes, and constructing a five-level stack interchange at the Loop 1604 and I-10 junction to improve traffic flow and reduce congestion.
How much will commute times be reduced upon completion?
Upon completion, the project is projected to reduce commute times along the Loop 1604 corridor by as much as 76% by 2045, addressing significant congestion issues in the area.
What is the timeline for the project’s completion?
The project is divided into six segments, with completion expected between late 2025 and 2028, depending on the segment. The first segment, from SH 16 to I-10, is expected to be completed by late summer 2025.
How many flyover ramps are planned for the Loop 1604 and I-10 interchange?
A total of eight flyover ramps are planned for the Loop 1604 and I-10 interchange. As of October 2025, five of these ramps have been opened, with the remaining three scheduled to be completed by the end of 2026.
What are the expected benefits of the Loop 1604 North Expansion project?
The expansion is expected to significantly improve traffic flow, reduce congestion, and enhance safety along the Loop 1604 corridor, leading to more efficient daily commutes for San Antonio residents.
Key Features of the Loop 1604 North Expansion Project
| Feature | Description |
|---|---|
| Project Scope | Widening Loop 1604 from four to ten lanes, adding HOV lanes, and constructing a five-level stack interchange at the Loop 1604 and I-10 junction. |
| Projected Commute Time Reduction | Up to 76% reduction in commute times along the Loop 1604 corridor by 2045. |
| Project Timeline | Completion expected between late 2025 and 2028, depending on the segment. |
| Flyover Ramps | A total of eight flyover ramps planned for the Loop 1604 and I-10 interchange, with five opened as of October 2025. |
| Expected Benefits | Improved traffic flow, reduced congestion, and enhanced safety along the Loop 1604 corridor, leading to more efficient daily commutes for San Antonio residents. |
Deeper Dive: News & Info About This Topic
HERE Resources
Burger Boy Expands to San Antonio’s West Side
San Antonio Business Updates: New Openings and Developments
San Antonio Drivers Prepare for Loop 1604 and I-10 Closures
Hoka Hoka Fuku Expands with New Location in San Antonio
San Antonio’s Traffic Congestion: A Growing Concern
San Antonio’s Retail Expansion in 2026
San Antonio’s Culinary Scene Expands with New Restaurant Openings
Topgolf Celebrates Milestone with 100th U.S. Location
Significant Business Developments in Northeast San Antonio
San Antonio Drivers Face Major Highway Closures This Weekend
Author: STAFF HERE SAN ANTONIO WRITER
The SAN ANTONIO STAFF WRITER represents the experienced team at HERESanAntonio.com, your go-to source for actionable local news and information in San Antonio, Bexar County, and beyond. Specializing in "news you can use," we cover essential topics like product reviews for personal and business needs, local business directories, politics, real estate trends, neighborhood insights, and state news affecting the area—with deep expertise drawn from years of dedicated reporting and strong community input, including local press releases and business updates. We deliver top reporting on high-value events such as Fiesta San Antonio, San Antonio Stock Show & Rodeo, and Dia de los Muertos. Our coverage extends to key organizations like the Greater San Antonio Chamber of Commerce and United Way of San Antonio and Bexar County, plus leading businesses in retail, insurance, and energy that power the local economy such as H-E-B, USAA, and Valero Energy. As part of the broader HERE network, including HEREAustinTX.com, HERECollegeStation.com, HEREDallas.com, and HEREHouston.com, we provide comprehensive, credible insights into Texas's dynamic landscape.
