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Texas Highwayman Pages > San Antonio Freeway
System > I-10 West
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This page covers
Interstate 10 northwest of downtown San Antonio from I-35 to
Ralph Fair Rd. Two miles of
I-10 is 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.
Length:
16 miles |
On this page:
Description
The busiest freeway in Bexar
County, this segment of I-10 serves the
Northwest corridor, one of the fastest growing areas of the city.
A tremendous amount of the region's suburban office space is located in
this corridor as are the headquarters for financial-services giant USAA
and gasoline refiner and retailer Valero. The corridor also serves
the rapidly-growing South Texas Medical Center complex, Crossroads of
San Antonio mall, the Colonnade, Huebner Oaks, and Fiesta Trails shopping
areas, the University of Texas at San Antonio's (UTSA) main campus, Six
Flags Fiesta Texas, and the Shops at La Cantera and The Rim and La
Cantera developments. One
suburban city, Balcones Heights, also lies within the corridor.
I-10 continues northward to the booming outlying areas of Leon Springs,
The Dominion, Fair Oaks Ranch, Boerne, and Kendall County. Inside
I-410, the route is lined with light industrial and residential areas.
Heavy commercial development dominates the landscape between I-410 and
Loop 1604.
While it 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.
Roadway details
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Click
here for a
schematic of this route showing lane layout, relative location
of entrance and exit ramps, cross streets, access roads, and
other important features. |
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LANES |
- 10 lanes
double-decked (6 lanes on the upper levels;
4 lanes on the lower level) from I-35 to Hildebrand
- 10 lanes from
Hildebrand to Crossroads
- 7 lanes (3 OB, 4 IB) from Crossroads to Callaghan
- 10 lanes
from Callaghan to Wurzbach
- 8 lanes from Wurzbach to
Huebner
- 7 lanes
(4 OB, 3 IB) from Huebner to DeZavala
- 6 lanes
from DeZavala to La Cantera
-
4 lanes from
La Cantera to Ralph Fair
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ACCESS ROADS |
- 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 except
through I-410 interchange
- Northbound
access road runs through the center of Leon Springs instead
of being immediately adjacent to the freeway
- Access roads are
two-way north of Camp Bullis Rd.
Note: The
access road on inbound I-10 now continues through the Loop 410
interchange on a collector/distributor road. Map and
description above will be updated when outbound
collector/distributor is also opened. |
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EXITS |
Click
here for a list of
I-10 West exits
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SPEED LIMITS |
- 60 mph from
I-35 to Fulton
- 65 mph from
Fulton to La Cantera
- 70 mph from La
Cantera to Ralph Fair
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SPECIAL FEATURES &
NOTES |
- Double-decked from
Frio to Hildebrand
- TransGuide coverage
along entire route
- VIA Metropolitan Park
& Ride locations:
-
Crossroads:
Crossroads Blvd.
-
University: Loop
1604 (under interchange)
- US 87 multiplexed
along entire route
- Special double-height
bridge rail barrier on ramp to
I-35 northbound
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TRAFFIC |
Heavy to extremely heavy
along entire route. The section at Callaghan is the
busiest freeway segment in the city, and the section near
DeZavala is the third busiest, with both locations exceeding
200,000 vehicles per day.
Regular morning and
afternoon peak-period congestion occurs on the inbound approach to
Loop 410 and on the approach to I-35. Additional afternoon
peak-period congestion occurs outbound between Fulton Ave.
and Loop 410 and on the approach to Loop 1604.
Traffic counts
outside Loop 410 have grown dramatically during the past decade,
with counts along the section at Huebner increasing by more than
100% during that time.
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AVERAGE ANNUAL DAILY TRAFFIC |
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LOCATION |
1990 |
1996 |
2000 |
2004 |
2005 |
2006 |
'96-'06
% CHG |
| Frio St. |
97,000 |
165,000 |
175,000 |
166,000 |
169,510 |
164,000 |
-1% |
| Crossroads Blvd. |
112,000 |
149,000 |
152,000 |
163,000 |
166,170 |
164,000 |
+10% |
| Callaghan Rd. |
121,000 |
167,000 |
174,000 |
188,000 |
197,250 |
216,000 |
+29% |
| Huebner Rd. |
62,000 |
89,000 |
133,000 |
158,000 |
162,900 |
179,000 |
+101% |
| DeZavala Rd. |
N/A |
N/A |
161,000 |
190,000 |
195,550 |
209,000 |
-- |
| S of Loop 1604 |
45,000 |
80,000 |
111,000 |
140,000 |
143,270 |
151,000 |
+89% |
| La Cantera Pkwy. |
36,000 |
61,000 |
71,000 |
79,000 |
81,450 |
91,000 |
+49% |
Photos
 Click
here for photos of this freeway.
Construction
projects
 At
Dominion Dr.: Construction of an overpass for I-10 at Dominion Dr.
This project was specifically requested by the City of San Antonio to
improve emergency access to the Dominion and other areas on the east
side of I-10. However, this project is also necessary because there are no crossovers for
the over two mile stretch from Camp Bullis Rd. to Boerne Stage Rd.
Construction of this overpass will provide a crossover location that
will allow for the conversion of the access roads in that area to
one-way, which is necessitated by traffic growth.
At Camp Bullis Rd: This project
will reconstruct the I-10 overpasses at Camp Bullis, which is necessary due to
clearance issues. This project will also construct turnarounds, which have
become necessary due to traffic from the Rim and Oak Hills Church, and will
convert the access roads to one-way operation from Camp Bullis Rd. to the new Dominion
Dr. overpass.
Loop 410 interchange: Click
here for information on
the Loop 410/I-10 project. Click
here for the latest status report on these
projects.
Future plans
There are proposals in the MPO's 25-year plan to widen I-10 to eight lanes from
Camp Bullis to the Kendall County line. Additionally, TxDOT is now studying
the feasibility of toll lanes along I-10 from Loop 1604 to Boerne and is
preparing an overall master plan for the corridor. There was also a proposal in the MPO
plan to modify or re-construct the Loop 1604 interchange; however, a
fully-directional "stack" interchange is now proposed at Loop 1604 as part of
the Loop 1604 tollway project.
Also as part of that project, several ramps along I-10 in the vicinity of Loop
1604 will be adjusted.
History
I-10 designation authorized on October 1, 1959. Named for Robert F.
McDermott, the former CEO of the USAA financial services corporation whose
headquarters are located adjacent to the freeway south of Huebner. Was
originally named (and is sometimes still referred to as) the "Northwest
Expressway."
The section from Culebra to Woodlawn was opened in 1949 and was the
first freeway in San Antonio. The segment from Culebra to Martin
was completed by 1951. There were various early proposals for the routing of the
section from Woodlawn to the northern end of Fredericksburg Rd. (near
Huebner). The final alignment was proposed by 1957 and completed by 1964. The
remainder of I-10 West in Bexar County was completed by 1968. The section from
I-35 to Hildebrand was reconstructed and double-decked during the '80s. 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 DeZevala was widened from four
to six lanes in 1993. The segment from DeZavala to Ramsgate was expanded
from four to seven lanes in 1995. Finally, the section from Ramsgate to
Callaghan was widened from four to eight and ten lanes in 1999. TransGuide
coverage was added to the section south of Hildebrand in 1995, and to the
remainder of the route in 1999. The section from Crossroads to Fulton was
widened from six to 10 lanes in 2008.
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