Antonio Area Freeway System
State Highway 151 (Raymond E. Stotzer Jr.
|This page last updated May 17, 2018
||This page covers State Highway (SH) 151 from US 90
to Loop 1604 in western San Antonio.
Length: 10 miles
rapidly-growing far western Bexar County to Loop 410 and also to
US 90. It is the main corridor through the exploding Westover
which includes Sea World of Texas, the Hyatt Hill Country
Resort, several major financial services companies, the
campus, multiple large data centers, and Northwest
Vista College. This route also serves Port San Antonio and the
Southwest Research Institute and Texas Biomedical Research Institute. At the
western end of the corridor is
the sprawling Alamo Ranch development. Residential and
construction is booming in the corridor with major retail hubs at Loop
Loop 410, the majority of the land fronting the corridor is
undeveloped, although the area near US 90 has some light to moderate
of 410, much of
the frontage is now a
suburban commercial, retail, and residential.
- 4 lanes along entire route
Continuous access roads along entire route. These access
roads originally served as the main highway before the construction of
the freeway mainlanes.
for a list of SH 151 exits.
- 65 mph along entire route
|SPECIAL FEATURES &
- No directional interchange at
- The interchange at US 90 only facilitates traffic
from westbound US 90 to SH 151 and from SH
151 to eastbound 90
Generally moderate. Traffic counts have exploded over the
past decade, especially after the freeway mainlanes opened in
2004. Half of the six fastest growing traffic counts in the
city during the
past decade are in this corridor. The
western end has seen particularly astronomical
increases. As a result, daily recurring congestion
occurs eastbound between Military Drive West and
Loop 410 during the morning rush hour and
westbound along much of the route during the evening rush hour.
ANNUAL DAILY TRAFFIC
|N of US 90
|E of Loop 410
|E of Potranco Rd.
|W of Potranco Rd.
|E of Loop 1604
for photos and video of this
No current projects in this corridor.
plan to to
extend 151 all the way to SH 211 in
far western Bexar County was once envisioned as part of
regional tollway system
but has since been
dropped. However, regional thoroughfare plans do still show Alamo Ranch
Parkway eventually connecting to SH 211 although there are currently no
plans to extend SH 151 over that route.
has near-term plans to add a third mainlane in each direction between
Loop 410 and Loop 1604; click here for more information on that project. TransGuide coverage is planned for
sometime in the future as well.
Phase 2 of the Loop 410/SH 151 interchange project will build the the
northbound Loop 410 flyover to westbound SH 151 and the eastbound SH
151 flyover to southbound Loop 410. It is expected to start in late
Order 81732 (March 14, 1984). Named for Raymond Stotzer, a
longtime TxDOT San
Antonio District engineer. It originally had the moniker
Expressway." When it was proposed, some maps mistakenly
labeled the route as
the "Northwest Expressway." At the time, I-10
northwest of downtown
officially held that name. (I-10 was subsequently renamed the
general route began appearing on planning maps as early as 1956. It wasn't until the
however, that a viable proposal to build it emerged. Marty Wender,
the developer of
realized that a highway would help spur development in the area and
donated land to the state for the route. In 1985,
after Sea World announced it would build
its new theme park
in Westover Hills, state officials quickly approved construction of
access roads from Loop 410 to Loop 1604. Work began
in late 1985 and
was finished in 1987. Construction on the second leg, from
to US 90, began in
late 1986 and was finished the following year. In addition to
roads, overpasses over the
future freeway mainlanes
for some of the major cross streets near Sea World were
construction also included the interchange at US 90.
1997, construction was
completed on the first short segment of the freeway mainlanes over
Potranco. The freeway mainlanes and overpass at Old Highway
90 opened in
February of 1998, and the mainlane overpass at Pinn was finished in the
of 1998. The overpass at Callaghan and the mainlanes between
Callaghan and Old
Highway 90 were completed in March 2001. Modifications to the
interchange were made in conjunction with the Loop 1604/Culebra
project in late 2003.
As a result of a statewide directive, a study was initiated in 2003 to determine the feasibility of
tolling the SH 151 mainlanes, which were under construction at that
time. However, due to local political
pressure-- and notably the fact that the right-of-way for SH 151 had been donated-- the tollway
proposal was quietly dropped. The toll-free mainlanes from Callaghan to
410 were completed
in May 2004 and from Loop 410 to Loop 1604 in September 2004. The
direct connector from southbound Loop 1604 to SH 151 was completed in