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Road work San Antonio Area Freeway System
Construction projects

This page last updated September 21, 2023

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"Creation is messy work."
--Mrs. Texas Highway Man

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 September 21, 2023. 


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

Current & 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.

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 funding projections. 

Important information about project dates
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. For projects in planning, funding availability, engineering issues, environmental clearances, 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. Therefore, all dates shown here are always subject to change. 

How percentage completed is calculated
I use my own method for this. I do so by averaging the percentage of allotted 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 inconsistencies and the "fits and starts" that one metric or the other can often 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.

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

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)
27% 4th quarter
2027
2
US 281 STONE OAK/TPC to
COMAL COUNTY LINE
Upgrade to six lane freeway including two HOV lanes
(Details)
99%
3
I-10/Loop 1604 interchange I-10/LOOP 1604 INTERCHANGE
(Northwest Side)
Replace cloverleaf interchange with five-level direct-connect flyover interchange
(
Details)
28% 4th quarter
2027
4
Loop 1604 BANDERA
to I-10
Expand to 10 lane freeway including two HOV lanes
(Details)
69% 4th quarter
2024
5
Loop 1604 I-10 to
US 281
Expand to 10 lane freeway including two HOV lanes
(Details)
46% 3rd quarter
2025
6
Loop 1604 At BLANCO Convert access road intersections to a Diverging Diamond Interchange (DDI)
(Details)
40% 3rd quarter
2025
7
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)
63% 1st quarter
2025
8
I-10 LOOP 1604 to
PFEIL
Expand freeway to six lanes, reconfigure Graytown Rd. intersection, and convert access roads to one-way
(Details)
79% 1st quarter
2025
9
I-10 GRAYTOWN to
GUADALUPE COUNTY
LINE
Expand freeway to six lanes 49% 3rd quarter
2025
10
 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)
13% 4th quarter
2026
11
I-410 PEARSALL
to VALLEY HI
Ramp revisions and intersection improvements 88% 4th quarter
2023
12
US 90/Loop 410 Interchange NW MILITARY
to O'CONNOR
Safety improvements and TransGuide installation 65% 3rd quarter
2024
13
Loop 1604 I-10W to
I-35N
TransGuide expansion
99%
14
US 281 NAKOMA to
LOOP 1604
TransGuide expansion
99%
ADVANCED PLANNING / SCHEDULED FOR CONSTRUCTION
MAP ID FREEWAY LOCATION PROJECT DESCRIPTION PROJECTED
START
A
I-35 LOOP 410 NORTH
to LOOP 410 SOUTH
Add two elevated express lanes in each direction plus HOV lanes
(Details)
Late 2023
B
I-35 LOOP 410 SOUTH
to WALTERS
Add two elevated express lanes in each direction
(Details)
2025
C
I-35 FM 3009
to FM 1103
Expand to 10 lane freeway including two HOV lanes
(Details)
2027
D
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 2032
E
Loop 1604 US 281
to RED LAND
Add two additional mainlanes in each direction plus HOV lanes
(Details)
Early 2024
F
Loop 1604 RED LAND
to JUDSON
Add two additional mainlanes in each direction plus HOV lanes
(Details)
2025
G
Loop 1604 JUDSON
to I-35
Add two additional mainlanes in each direction plus HOV lanes
(Details)
2028
H
Loop 1604 At CULEBRA Convert access road intersections to a Displaced Left Turn (DLT) intersection 2025
I
I-410 US 90 to
SOMERSET
Expand freeway to eight lanes and construct new interchange at I-35 South 2032
J
Loop 1604 FM 78 to
I-10 EAST
Upgrade to four lane freeway
(Details)
2032
K
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
L
US 281 At
JONES-MALTSBERGER
(Quarry)
Convert access road intersections to a Diverging Diamond Interchange (DDI)
(Details)
2032
M
US 281 At BASSE Convert existing interchange to a diamond interchange with partial Displaced Left Turn (DLT)
(Details)
2032
N
US 90 LOOP 1604
to SH 211
Upgrade to a six lane freeway
(Details)
2028
O
US 90 LOOP 410
to LOOP 1604
Upgrade to a eight lane freeway
(Details)
2025
P
US 90 LOOP 410
to OLD HWY 90
Operational improvements
(Details)
2032
Q
US 90/Loop 1604 interchange US 90 at
LOOP 1604
Build remaining flyovers
(Details)
2034


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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 & 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/inside-txdot/district/san-antonio.html
San Antonio Metropolitan Planning Organization
http://www.alamoareampo.org


This page and all its contents are Copyright 2023 by Brian Purcell

NOTICE
The information provided on this website is provided on an "as-is" basis without warranties of any kind either express or implied.  The author and his agents make no warranties or representations of any kind concerning any information contained in this website.  This website is provided only as general information.  The author expressly disclaims all liability with respect to actions taken or not taken based upon the information contained herein or with respect to any errors or omissions in such information.  All opinions expressed are strictly those of the author.  This site is not affiliated in any way with any official agency.