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
Loop 1604 from Culebra to Potranco
page last updated March 20, 2017
1604 from Culebra Rd. to Potranco Rd.
Status: Under construction (7% complete)
This project will upgrade Loop
1604 at this location from a four-lane divided highway to a four-lane,
expressway. This includes adding
overpasses at Wiseman Blvd., Military Dr. West, and Potranco Rd. (FM
1957), continuous access
and entrance and exit ramps. The discovery of a sensitive karst feature along the western edge of the right-of-way
between Wiseman and Military will necessitate a short bow in the
corridor. Otherwise, the expansion will be completed by
the existing northbound lanes to the northbound access road, converting
the existing southbound lanes to northbound expressway lanes, and
constructing the remaining lanes (southbound expressway and access
road.) Unbeknownst to most motorists, the existing divided highway
was originally designed to eventually be expanded to an expressway as
described above; this will reduce costs, expedite the work a bit and minimize disruption to
cost of this project is $62.5 million and is being paid for with local
funds from the Advanced Transportation District as part of the larger
$825 five-year regional transportation plan announced in January 2014.
project will help: Staggering ongoing growth in this area of
Antonio necessitates upgrading this
roadway. The new
overpasses at the currently signalized intersections will allow for
continuous free-flowing traffic through the corridor. The four expressway lanes are anticipated to handle the projected traffic in this corridor for the next 20 years.
The official groundbreaking occurred on September 12, 2016.
Construction began in October 2016 and should be complete in mid
for the latest status report on this project.
- Why are the new sections of Loop 1604 only four lanes? It needs to be six lanes or more.
number of lanes for a new roadway is based on current and projected
traffic volumes for the next 20 years. Twenty years is the accepted
planning horizon for a couple of reasons. First, that's the length of
time before a road will need major repairs and upgrades simply due to
age (i.e. the road's expected lifespan). Second, that length of time is
the longest that any projections can be considered even remotely
reasonable. Since nobody has a crystal ball, traffic
projections are "educated guesses" based on the
best data available for future development in an area and past growth.
Roads are then planned based on those projections. In the case of the
new segments of Loop 1604, those projections show that four lanes will
be adequate for the 20 years. TxDOT, as a steward of taxpayer dollars,
cannot spend more than they can justify, a policy I'm sure most
taxpayers support, especially with all the other needs that need
Below are cross sections and full schematics for this project. Click on one of the schematic images below to see an annotated overview schematic of each segment of
this project. These plans are courtesy of TxDOT and are
change. Annotations are my own.
below are somewhat large and may take a few seconds to open.)
half (Kilmarnoch to SH 151) (1.49 MB)
half (S of Potranco to Kilmarnoch) (1.43 MB)
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