SAN ANTONIO FREEWAY HISTORY
Read my essay on San Antonio's freeway history for the Express-News' Tricentennial series
The full history of the freeway system is available on this site
Antonio Area Freeway System
Interstate 10 West (Robert F. McDermott
|This page last updated December 27, 2017
||This page covers Interstate 10 northwest of
downtown San Antonio from I-35 to Ralph Fair Rd. Two miles of
I-10 is concurrent (multiplexed) with I-35 south of this segment; see
the I-35 South
page for details. Interstate 10 continues east of downtown;
see the I-10 East
page for more info.
Length: 16 miles
segment of I-10
serves the northwest corridor, one of the fastest growing areas of the
tremendous amount of the region's suburban office space is located in
corridor as are the headquarters for several large companies. The corridor also serves the
continually-growing South Texas Medical Center complex; Wonderland of
Americas mall (formerly known as Crossroads mall); the University of
Texas at San
(UTSA) main and downtown campuses; Six Flags Fiesta Texas; and The Rim,
La Cantera, Landmark, Colonnade,
Huebner Oaks, and Fiesta Trails retail centers and mixed-use developments. One suburban city, Balcones Heights,
also lies within
the corridor as does the unincorporated Leon Springs area. I-10 continues
northward to the booming outlying areas of Fair Oaks Ranch, Boerne, and
County. Inside I-410, the route is lined with light
industrial and residential
areas. Heavy commercial development dominates the landscape
between I-410 and
La Cantera Blvd., with moderate and growing commercial and residential development north of there.
is signed as east/west, this segment actually runs mostly north/south.
To avoid confusion, many locals give directions as "inbound" or
"outbound" (from downtown) instead; I use that convention here.
for a schematic of I-10 West.
- 10 lanes double-decked (6 lanes
on the upper levels; 4 lanes on the lower level) from I-35/Frio to
- 10 lanes from Fulton to Wurzbach
with a short 8 lane section through the Loop 410 interchange
- 8 lanes
from Wurzbach to Huebner
- 9 lanes
(5 inbound, 4 outbound) from Huebner to Loop 1604
- 6 lanes from Loop 1604 to La
- 4 lanes from La Cantera to
- Access roads from I-35 to Frio
- No continuous access roads from Frio to Woodlawn,
except on the inbound side between Woodlawn and Culebra
- Continuous access roads along remainder of route
north of Woodlawn
for a list of I-10 West exits.
mph from I-35 to Fulton
- 65 mph from Fulton to La Cantera
- 70 mph from La Cantera to Ralph
|SPECIAL FEATURES &
- Double-decked from Frio to
- TransGuide coverage from I-35 to
Camp Bullis Rd.
- VIA Metropolitan Park & Ride
- Crossroads: Crossroads Blvd.
- University: Loop 1604 (under interchange)
- US 87 concurrent (multiplexed)
along entire route
- Special double-height bridge rail barrier
on ramp to I-35 northbound
- Unusual yield sign arrangement
at Loop 1604 interchange; click here
for more information
- Two waterways run longitudinally below the freeway:
- Martinez Creek between West Ave and Fresno
- San Pedro Creek between Frio and I-35
|Heavy to extremely heavy along entire route.
Regular morning peak-period congestion occurs
inbound between Ralph Fair and La Cantera and on the approaches to Loop
410 and I-35. Afternoon peak-period congestion occurs
outbound between Loop 1604 and Boerne Stage Rd. and inbound on the
approach to Loop 410.
Traffic counts throughout the corridor have continued to
grow substantially during the past decade with substantial growth outside Loop 1604.
ANNUAL DAILY TRAFFIC
|S of Loop 1604||45,000||143,270||139,000||184,534||169,707||156,306||+9.10%|
|La Cantera Pkwy.||36,000||81,450||106,000||123,348||127,952||121,400||+49.05%|
for photos and video of this
- Dominion to Ralph Fair:
Click here for
details on this project.
view information for all projects in this
were proposals in
the MPO's previous 25-year plan to widen I-10 to eight lanes from Loop
1604. to the Kendall County line. However, those plans have since
been revised. TxDOT started construction in 2017 to
add one general-purpose mainlane and one HOV lane in each direction
La Cantera and Ralph Fair Road; click here for more details on this project. Long-term plans are to extend
that widening to Boerne.
"stack" interchange was proposed at Loop 1604 as part of the Loop 1604 managed lanes project.
authorized on October 1, 1959. Was originally named (and is
referred to as) the "Northwest Expressway." Renamed ca. 1995
for Robert F.
McDermott, the former CEO of the USAA financial services corporation
headquarters are located adjacent to the freeway south of
section from Fredericksburg at Woodlawn to Culebra opened on July 8, 1949, and was the first expressway in San
Antonio. The section from Culebra to Frio St. opened on November 28, 1949. The
segment from Frio to Martin was completed by late 1950. There
proposals for the routing of the section from Woodlawn
to Fredericksburg Rd. near Huebner. The alignment was
finalized 1957 with the sections outside Loop 410 and from Woodlawn to
Fresno completed in 1960 followed by the section from Fresno to Loop
410 the following year. The remainder of I-10 West in Bexar
completed by 1968.
section from I-35 to Hildebrand was
double-decked during the late '80s and early '90s. The current
interchange at Loop 1604 was completed in 1987. The segment north
of Loop 1604
to Camp Bullis
was widened from four to six lanes in 1991. The section from
Loop 1604 south
to Fredericksburg was widened from four to six lanes in 1993. The
segment from Fredericksburg to Wurzbach was expanded from four to seven lanes in
1996. Finally, the
section from Wurzbach to Callaghan was widened from four to eight and
coverage was added to the section south
of Hildebrand in
1995, and to the remainder of the route in 1999. The section
to Fulton was widened from six to 10 lanes in 2008. The
Dominion Dr. overpass
was completed in 2009. Reconstruction of the highway from Camp
to Dominion Dr.
was completed in mid 2011. The section from Huebner to Loop 1604 was
widened and improved in 2016. Improvements to the access roads
between Dominion and Leon Springs was completed in 2017.
music group REM filmed the video for their song "Everybody Hurts" in
1992 on the lower level at Woodlawn. Producers had originally
wanted to use US 281 North at Loop 1604, but decided it looked too wide
in camera shots.