San Antonio Area Freeway System Construction projects

This page last updated September 21, 2023

"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. 

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

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. 

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.

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

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-35 to LOOP 1604 (Northwest side) Add HOV lanes and operational improvements
	US 90 to ATASCOSA COUNTY LINE Expand freeway to six or eight lanes
	LOOP 410 to ATASCOSA COUNTY LINE Expand freeway to six lanes
	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
	At SP 371 Build new interchange At ZARZAMORA Add westbound entrance ramp I-35 to LOOP 410 Modernize freeway corridor, upgrade/relocate ramps
	BORGFELD to FM 306 (Comal/Blanco county line) Upgrade to freeway (Phase 1 is in advanced planning)
	US 90 to POTRANCO Widen to four-lane divided highway
	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 (East) Construct new directional interchange
	US 90/LOOP 410 INTERCHANGE (Lackland) Build remainder of new directional interchange
	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