The road projects around Alamo Ranch are finishing in a set order. The work on the edges of the area ends first. SH 151 is due in December 2026, Culebra Road in February 2027, and the Loop 1604 and I-10 interchange sometime in 2027 or 2028, depending on which estimate you go by. The road most of us drive every day comes last. The Alamo Ranch Parkway freeway isn't scheduled to start construction until winter 2027, and the county doesn't expect to finish it until winter 2030. That late spot is on purpose. Bexar County wants the elevated parkway built before Alamo Ranch Parkway is extended farther west.
Your drive should get easier at the edges over the next few months. The middle should stay about the same for years.
The finish order, as the agencies have it today
- SH 151, Loop 1604 to I-410: TxDOT estimates completion in December 2026.
- Culebra Road/FM 471, SH 211 to Old FM 471: TxDOT's September 2 update said the project "remains on schedule for completion in February 2027."
- Loop 1604 at I-10: KSAT reported in February that the interchange was on track for 2027. TxDOT's segment page lists the I-10 interchange segment for 2028, with the broader Loop 1604 North Expansion running through 2028.
- Alamo Ranch Parkway freeway conversion: Construction is set to begin in winter 2027 and finish in winter 2030, according to the county's project presentation.
- Alamo Ranch Parkway west toward Talley Road or SH 211: No committed date.
The first two items are state highway projects, and both should finish within the next several months. The fourth item is a county road, and it's at least three winters away.
SH 151 is the first to clear, with a busy final stretch
The SH 151 project began in May 2023. TxDOT lists the work as six main lanes with inside shoulders and a concrete median barrier, rebuilt ramps, intersections and frontage roads, a direct connector, and turnarounds at Military Drive W, Westover Hills Boulevard and Wiseman Boulevard. The Express-News pointed out why this matters on the west side. SH 151 links to Alamo Ranch Parkway at the parkway's eastern end, so the expanded parkway will work a lot like an extension of the state highway.
The last weeks of a highway job tend to bring a lot of ramp work. TxDOT's closure listing shows these closures on and near SH 151 for the week this post publishes:
- Eastbound Potranco on- and off-ramps: closed from October 12 through 3 p.m. on October 23
- Both Potranco turnarounds: closed through 3 p.m. on October 24
- Eastbound Hunt exit and the on-ramp before it, plus the eastbound exit after Wiseman and the on-ramp before Westover Hills: closed from September 28 through October 24
- Eastbound frontage road between Escala Parkway and Classic Drive: left lane closed October 10 through 24 for mow-strip and high-mast work
These are live schedules, and TxDOT changes them. Check the listing or DriveTexas the morning you drive. If the December estimate holds, these closures are some of the last on this project.
Culebra Road is down to the SH 211 overpass
The Culebra Road job covers about three miles of FM 471 between SH 211 and Old FM 471. It widens the road from two undivided lanes to four divided lanes. TxDOT is adding turn lanes, raised medians, drainage work, bicycle and pedestrian accommodations, and an overpass at SH 211.
In a September 2 update quoted by MySA, TxDOT said paving on FM 471 was expected to wrap up that week. It also said the full roadway from Old FM 471 to Little Geronimo was expected to open by early September. The same MySA story said the SH 211 overpass was still being built. At that point, drivers were being routed off SH 211 through a signalized intersection and underpass. TxDOT's project page gives "early 2027" as the completion date, which matches the February 2027 target in the September update.
This is the second of the two edge projects. San Antonio Report found that since 2020, Alamo Ranch Parkway and Culebra Road have together picked up more than 20,000 additional vehicles a day. Culebra is getting its upgrade now. The parkway is still waiting for its own.
Loop 1604 at I-10 runs on a separate schedule
If your weekday drive heads north on Loop 1604 toward the Rim or UTSA, you're dealing with a different project. TxDOT's Loop 1604 North Expansion starts at SH 16, Bandera Road, and runs to I-35. That puts it north of the Culebra and Alamo Ranch stretch of the loop. TxDOT estimates the SH 16 to I-10 segment will finish in 2026. The I-10 interchange is a separate segment, estimated for 2028. The agency expects the overall project to stay under construction through 2028.
There's been steady progress at the interchange. The eighth and final flyover opened in February 2026, linking westbound Loop 1604 to westbound I-10. KSAT reported the interchange was 70% complete and on track for 2027, with lower-level and frontage-road work still left. That is a year earlier than the 2028 date on TxDOT's segment page, so plan around the later of the two. On September 14, the eastbound I-10 entrance ramp south of the interchange closed permanently. KSAT reported that a UTSA Boulevard bypass ramp is scheduled to open at year-end. MySA reported nightly closures from 9 p.m. to 5 a.m., October 16 through 19. They covered the Loop 1604 frontage roads in both directions and the eastbound I-10 main lanes at the interchange, and all flyovers stayed open. Expect more overnight closures like these until the interchange is finished.
Why the parkway goes last
Out of everything on this list, the Alamo Ranch Parkway project is the one people here will probably feel most. It's also the furthest from finished. The county put it last on purpose.
David Wegmann is Bexar County's interim county engineer and director of public works. He told San Antonio Report that the elevated roadway has to be finished before Alamo Ranch Parkway is built out to Talley Road or SH 211. "It was imperative that we get the expansion of our section done before that connection is made," he said. "If we dump all that western traffic onto an already bad situation, it is going to be not a good thing." He also said the project would cut down on the traffic that now overflows into nearby neighborhoods.
So the westward connection waits for the freeway. Expect the gap west of Calaveras Way to close only after the elevated project is done. The Express-News reported that extending the parkway as far as SH 211 is still only a possibility, and that the route would cross privately owned land. Meanwhile, the county is looking further ahead. Wegmann said a West Planning Study would run over the next 9 to 12 months to find growth patterns and set priorities. He also said corridors will eventually need to be coordinated with Medina County.
What the county plans to build
The county's July 2 presentation describes a 2.5-mile access-controlled facility. It has main lanes and overpasses with two to three lanes in each direction, frontage roads with turning lanes, and shared-use paths and sidewalks. The Express-News compared the finished road to Wurzbach Parkway. At first it would have two main lanes and a two-lane frontage road in each direction, with room to add a third main lane later. Today's main lanes would become the frontage roads. Bridges would carry traffic over the Lone Star Parkway and Alamo Parkway intersections, so drivers wouldn't stop at those lights. Another overpass is planned at Roft Road and Del Webb Boulevard.
The presentation gives travel-time estimates for the peak hours:
| Peak trip | 2026 today | 2049 if nothing is built | With the project |
|---|---|---|---|
| Morning, Roft Road to Westwood Loop | 9–20 min | 22 min | 3 min |
| Afternoon, Westwood Loop to Roft Road | 10–17 min | 23 min | 5 min |
The middle column matters most. It shows the county's estimate that the drive won't get much worse by 2049 if nothing is built. The bigger point is that today's morning range already reaches 20 minutes, which is close to that 22-minute no-build number.
The project is funded locally. The presentation puts the total at $133.5 million, with $127.5 million for construction and $6 million for right-of-way. According to the Express-News, the Alamo Regional Mobility Authority will pay for it. That agency is funded by a $10 fee on new vehicle registrations in Bexar County. San Antonio Report's August story used $113.5 million and a 2029 finish. The county's own presentation lists $133.5 million and winter 2030.
The parkway calendar from here
The county's timeline lays out these steps:
- Spring 2027: design complete
- Summer 2027: right-of-way acquisition complete
- Winter 2027: construction begins
- Winter 2030: construction complete
Engineering firm Pape-Dawson is designing the project. The public comment period after the July 2 open house closed on July 17.
Put the dates side by side. By the time crews start on the parkway, SH 151 should have been finished for about a year and Culebra Road for most of a year. For the next few winters, the parkway between Loop 1604 and Calaveras Way will look much like it does today. Then construction starts.
If you're planning a move within Alamo Ranch, or timing a sale around this construction, start with how a specific street connects to these roads and how the schedule might affect your daily drive. I'm glad to walk through it with you, street by street. Let's Connect with Marcus T. Wood.
