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Road work San Antonio Area Freeway System
Construction projects

This page last updated July 17, 2021

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"Creation is messy work."

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 data on this page was last updated July 3, 2021. 


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

Current & near-term projects

The following is a map and list 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. 

Project schedules are in a constant state of flux due to weather and other factors for projects already underway, and due to funding availability and other red tape for projects in planning. Therefore, all dates shown here are always subject to change. 

How percentage completed is calculated
The percentage completed shown below is computed by averaging the percentage of allotted working time used and contract budget amount used to date as obtained from TxDOT's website. 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.

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 DESCRIPTION OF WORK % COMP ESTIMATED
COMPLETION
1
US 281 LOOP 1604 to
STONE OAK/
TPC
Upgrade to six and eight lane freeway including HOV lanes and construct northern half of Loop 1604 interchange
(Details)
96% 3rd quarter
2021
2
US 281 STONE OAK/TPC to
COMAL COUNTY LINE
Upgrade to six lane freeway including two HOV lanes
(Details)
52% 1st quarter
2023
3
Loop 1604 BANDERA
to I-10
Expand to 10 lane freeway including two HOV lanes
(Details)
10% 2nd quarter
2024
4
I-10/Loop 410 Interchange EAST SIDE Replace existing cloverleaf with fully-directional interchange (Phase 1); improve entrance/exit ramps and frontage roads
(Details)
0% 3rd quarter
2024
5
I-10 LOOP 410 to
LOOP 1604
(Eastside)
Expand freeway to six lanes
(Details)
98% 2nd quarter
2021
6
I-10 LOOP 1604 to
PFEIL
Expand freeway to six lanes, reconfigure Graytown Rd. intersection, and convert access roads to one-way
(Details)
36% 1st quarter
2024
7
Loop 1604 I-35 to FM 78 Upgrade to full freeway
(Details)
96% 2nd quarter
2021
8
 SH 151/Loop 410 Interchange INGRAM
to US 90
Phase 2 of Loop 410/SH 151 interchange and expand Loop 410 to from eight to ten lanes
(Details)
67% 3nd quarter
2022
9
 US 90/Loop 410 Interchange NW MILITARY to
LOCKHILL-SELMA
Intersection improvements
(Details)
48% 2nd quarter
2022
10
 Loop 1604 I-10W to
I-35N
TransGuide expansion
56% 3rd quarter
2021
11
  US 281 NAKOMA to
LOOP 1604
TransGuide expansion
56% 3rd quarter
2021
12
  SH 151 ALAMO RANCH PKWY
at WESTWOOD LOOP
Construct westbound overpass
(Details)
53% 2nd quarter
2022
13
  I-10 GRAYTOWN to
GUADALUPE COUNTY
LINE
Expand freeway to six lanes 15% 3rd quarter
2025
14
  Loop 1604 NORTHBOUND at BANDERA RD Relocate exit ramp 5% 3rd quarter
2021
15
  I-410 PEARSALL
to VALLEY HI
Ramp revisions and intersection improvements 0% 3rd quarter
2023
 Transguide COUNTY-WIDE Install Advanced Traveller Information System (ATIS) citywide including travel time comparison (TTC) signs and new dynamic message signs and cameras 99% 2nd quarter
2021
ADVANCED PLANNING / SCHEDULED FOR CONSTRUCTION
MAP ID FREEWAY LOCATION DESCRIPTION OF WORK PROJECTED
START
A
I-35 LOOP 410 NORTH
to FM 3009
Add two elevated express lanes in each direction plus HOV lanes
(Details)
2022
B
I-35 LOOP 410 NORTH
to AT&T CENTER PKWY
Add two elevated express lanes in each direction plus HOV lanes
(Details)
2025
C
I-35 FM 3009
to FM 1103
Expand to 10 lane freeway including two HOV lanes
(Details)
2025
D
Loop 1604/I-10 interchange NORTHWEST
SIDE
Replace existing cloverleaf interchange with fully-directional interchange
(Details)
2022
E
Loop 1604 I-10 to
US 281
Expand to 10 lane freeway including two HOV lanes
(Details)
2021
F
Loop 1604 At
BLANCO
Convert access road intersections to a Diverging Diamond Interchange (DDI)
(Details)
2021
G
Loop 1604 US 281
to I-35
Add two additional mainlanes in each direction plus HOV lanes
(Details)
2025
H
Loop 1604 At CULEBRA Convert access road intersections to a Displaced Left Turn (DLT) intersection 2025
I
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 add an eastbound exit to Military Dr. inside Loop 410
(Details)
2025
J
US 90 LOOP 410
to SH 211
Upgrade to a six lane freeway
(Details)
2025
K
I-410 US 90 to
SOMERSET
Expand freeway to eight lanes and construct new interchange at I-35 South 2032
L
Loop 1604 FM 78 to
I-10 EAST
Upgrade to four lane freeway
(Details)
2031
M
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)
2024
N
US 281 At
JONES-MALTSBERGER
(Quarry)
Convert access road intersections to a Diverging Diamond Interchange (DDI)
(Details)
2031
O
US 281 At BASSE Convert existing interchange to a diamond interchange with partial Displaced Left Turn (DLT)
(Details)
2031
P
I-37 SE MILITARY
to LOOP 410
Convert access road intersections to a Diverging Diamond Interchange (DDI) and construct southbound exit to future City Base Landing extension 2025
Q
I-35 SOUTHCROSS
to LOOP 1604
TransGuide expansion 2021


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Long-range projects

This is a list of major long-range projects that have been proposed or are being studied by TxDOT or ARMA. 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 (NW 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
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
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-410/US 90 interchange
  • LACKLAND INTERCHANGE
    Build remainder of new directional interchange
Loop 1604/US 90 interchange
Loop 1604
  • US 90 (West) to I-10 (East) (southern arc)
    Upgrade to four lane divided highway (three projects currently under construction 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




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This page and all its contents are Copyright 2019 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.