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San Antonio Area Freeway System
Construction projects

This page last updated June 12, 2024

This page contains information about current and future major freeway expansion and improvement projects in the San Antonio area. Minor projects, as well as maintenance and repair jobs, are not included (there's just not enough room to list them all here!) Data for this page comes primarily from official TxDOT, ARMA, and MPO project databases, as well as from media reports and the author's personal knowledge. All information is subject to change.

This is not an official website. The completion percentage data on this page was last updated June 12, 2024.


FAQ

Got a general question about road construction? See the construction FAQ page.



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Current and near-term projects

The following is a compendium of major San Antonio area freeway projects currently underway or in advanced planning. The numbers and letters on the map correspond to the listings on the table below. Letting, start, and completion dates represent the latest estimates that could determined as of the date this page was updated.

How percentage completed is calculated
I use my own method for this. I do so by averaging the percentage of contracted working time used and the contract budget amount spent as obtained from TxDOT's project tracker database. This method takes both metrics into consideration and helps to smooth the fluctuations that the budget metric alone can produce as a project progresses. If that average exceeds 100%, then the lower of the two metrics is used. If that still exceeds 100%, the project will be listed as 98% complete. Projects that have reached substantial completion but are still working on final "punch list" items will be shown as 99% complete.

Occasionally, TxDOT may grant extra time to complete a project due to issues beyond the contractor's control. When this happens, you may notice the completion percentage on a project decrease from one month to the next.

Because I use my own method for calculating the completion percentage, it may not always match information from other sources. In the end, construction progress is always fluid and somewhat subjective, so any advertised completion percentage should always be considered approximate.

Estimated completion/start dates
For the estimated completion date for projects currently underway, I use one of the following in this order:

I use quadrimesters starting in January for the descriptors of "early", "mid", and "late".

In the "advanced planning" section, projected start dates are either when a project is estimated to start construction if already funded, or when funding may be available for a project based on current projections. For this, I generally use the projected bid date in TxDOT's project tracker database and add a few months to that unless there are other authoritative reports of a different start date.

Project schedules are always in a constant state of flux. For projects underway, weather, resource availability, engineering issues, and other factors can cause projected completion dates to slip, and occasionally the stars align and work is completed earlier than expected. For projects in planning, funding availability, engineering issues, environmental clearances, right-of-way acquisition, utility relocation, changing priorities, and other red tape can cause projected start dates to slip. Occasionally, start dates can get moved up due to unexpected funding availability or a shift in priorities.

The upshot: All dates shown here are always subject to change.



Click a number or letter on the map to see details for that project


UNDER CONSTRUCTION
MAP ID FREEWAY LOCATION PROJECT DESCRIPTION % COMP ESTIMATED
COMPLETION
1
I-35 LOOP 410 NORTH to FM 3009 Add two elevated express lanes in each direction plus HOV lanes
(Details)
40% Late 2027
2
I-35 LOOP 410 NORTH to LOOP 410 SOUTH Add two elevated express lanes in each direction plus HOV lanes
(Details)
16% Mid 2028
3
I-10/Loop 1604 interchange I‑10/LOOP 1604 INTERCHANGE
(Northwest Side)
Replace cloverleaf interchange with five-level direct-connect flyover interchange
(Details)
45% Late 2027
4
Loop 1604 BANDERA to I‑10 Expand to 10 lane freeway including two HOV lanes
(Details)
87% Late 2024
5
Loop 1604 I‑10 to US 281 Expand to 10 lane freeway including two HOV lanes
(Details)
64% Mid 2025
6
Loop 1604 At BLANCO Convert access road intersections to a Diverging Diamond Interchange (DDI)
(Details)
64% Mid 2025
7
Loop 1604 US 281 to REDLAND Expand to 10 lane freeway including two HOV lanes
(Details)
7% Late 2027
8
I-10/Loop 410 Interchange I‑10/LOOP 410 INTERCHANGE
(East Side)
Replace existing cloverleaf with fully-directional interchange (Phase 1); improve entrance/exit ramps and frontage roads
(Details)
77% Mid 2025
9
I-10 LOOP 1604 to PFEIL Expand freeway to six lanes, reconfigure Graytown Rd. intersection, and convert access roads to one-way
(Details)
92% Early 2025
10
I-10 GRAYTOWN to GUADALUPE COUNTY LINE Expand freeway to six lanes 68% Mid 2025
11
SH 151 LOOP 410 to LOOP 1604 Expand freeway to six lanes, build a new connector from westbound SH 151 to northbound Loop 1604, add turnarounds at three intersections, and various other intersection improvements
(Details)
38% Early 2027
12
I-410 PEARSALL to VALLEY HI Ramp revisions and intersection improvements 99% Mid 2024
13
US 90/Loop 410 Interchange NW MILITARY to O'CONNOR Safety improvements and TransGuide installation 91% Mid 2024
14
US 90 AT SH 211 Construct WB to EB turnaround 1% Mid 2026
ADVANCED PLANNING / SCHEDULED FOR CONSTRUCTION
MAP ID FREEWAY LOCATION PROJECT DESCRIPTION PROJECTED
START
A
I-35 LOOP 410 SOUTH to WALTERS Add two elevated express lanes in each direction
(Details)
2026
B
I-35 FM 3009 to FM 1103 Expand to 10 lane freeway including two HOV lanes
(Details)
2027
C
I-37 SE MILITARY to LOOP 410 Convert intersection to a Diverging Diamond Interchange (DDI) and construct southbound exit to future City Base Landing extension 2026
D
Loop 1604 REDLAND to JUDSON Add two additional mainlanes in each direction plus HOV lanes
(Details)
Late 2024
E
Loop 1604 JUDSON to I‑35 Add two additional mainlanes in each direction plus HOV lanes
(Details)
Late 2025
F
Loop 1604 At CULEBRA Convert access road intersections to a Displaced Left Turn (DLT) intersection TBD
G
I-410 US 90 to SOMERSET Expand freeway to eight lanes and construct new interchange at I-35 South 2032
H
Loop 1604 FM 78 to I‑10 EAST Upgrade to four lane freeway
(Details)
2032
I
US 281/Loop 410 Interchange LOOP 410/US 281/SAN PEDRO INTERCHANGE AREA Package of multiple intersection improvements, ramp revisions, and auxiliary lanes to address existing chokepoints and safety issues
(Details)
2026
J
US 281 At JONES-MALTSBERGER (Quarry) Convert access road intersections to a Diverging Diamond Interchange (DDI)
(Details)
2032
K
US 281 At BASSE Convert existing interchange to a diamond interchange with partial Displaced Left Turn (DLT)
(Details)
2032
L
US 90 LOOP 1604 to SH 211 Upgrade to a six lane freeway
(Details)
2028
M
US 90 LOOP 410 to LOOP 1604 Upgrade to a eight lane freeway
(Details)
2025
N
US 90 LOOP 410 to OLD HWY 90 Operational improvements
(Details)
2032
O
US 90 US 90 at LOOP 1604 Build remaining flyovers
(Details)
2034
P
I-410 I‑35 to FM 78 Replace and widen Loop 410 overpasses and build southbound access road overpass
(Details)
2025



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Long-range projects

This is a list of major long-range projects that have been proposed or are being studied. As they are just preliminary proposals, items on this list may not actually be constructed as described or at all. Some of the projects listed below may be broken-up into smaller projects for construction.


FREEWAY LOCATION AND DESCRIPTION OF PROJECT
I-10
  • I‑35 to LOOP 1604 (Northwest side)
    Add HOV lanes and operational improvements
I-35
  • US 90 to ATASCOSA COUNTY LINE
    Expand freeway to six or eight lanes
I-37
  • LOOP 410 to ATASCOSA COUNTY LINE
    Expand freeway to six lanes
Loop 410
  • I‑35 (South) to I‑35 (North) (Southeast side)
    Expand freeway to six or eight lanes, upgrade/relocate ramps, operational improvements at I-37 interchange

  • INGRAM to NW MILITARY
    Operational improvements including ramp adjustments and improvements at I-10 interchange
US 90
  • At SP 371
    Build new interchange

  • At ZARZAMORA
    Add westbound entrance ramp

  • I‑35 to LOOP 410
    Modernize freeway corridor, upgrade/relocate ramps
US 281
  • BORGFELD to FM 306 (Comal/Blanco county line)
    Upgrade to freeway (Phase 1 is in advanced planning)
SH 211
  • US 90 to POTRANCO
    Widen to four-lane divided highway
SP 371

Kelly Parkway
  • US 90 to CUPPLES
    Expand freeway to six lanes

  • At US 90
    Build new interchange

  • CUPPLES to SH 16 (South)
    Build new expressway (Kelly Parkway)
I-10/Loop 1604 interchange
  • I‑10/LOOP 1604 INTERCHANGE (East)
    Construct new directional interchange
I-410/US 90 interchange
  • US 90/LOOP 410 INTERCHANGE (Lackland)
    Build remainder of new directional interchange
Loop 1604
  • US 90 (West) to I‑10 (East) (southern arc)
    Upgrade to four lane divided highway (Three projects recently completed or starting soon)


Other sites of interest

TxDOT- San Antonio District
https://www.txdot.gov/about/districts/san-antonio-district.html
Alamo Area Metropolitan Planning Organization
https://www.alamoareampo.org/