San
Antonio Area Freeway System
PROJECT
INFO:
Loop 1604 from Potranco to US 90 |
|
| This
page last updated March 20, 2017 |
 Location: Loop
1604 from Potranco Rd. to US 90
Status: Under construction (3% complete)
Description:
This project will upgrade Loop
1604 at this location from a four-lane divided highway to a four-lane,
toll-free
expressway. This includes adding
an underpass at Dove Canyon/Falcoln Wolf, expanding the existing overpass at
Marbach, and adding continuous access
roads
and entrance and exit ramps. The expansion will be completed
by
converting
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 orignially designed to eventually be expanded to an expressway as
described above; this will expedite the work a bit, reduce the project's cost, and minimize
disruption to
traffic.
This
project will also build a direct connector flyover from SB Loop 1604 to
EB US 90 and the existing cloverleaf ramp from SB Loop 1604 to EB US 90
will be removed. The existing signalized intersections at US 90
will
remain, but a second overpass for Loop 1604 over US 90 will be built--
that new overpass will become the northbound lanes and the
existing overpass will used for the southbound lanes. The divided
highway will then end just south of US 90 and merge into the existing
two-lane road. The
cost of this project is $64.1 million and is being paid for with local
funds from the Alamo Regional Mobility Authority as part of the larger
$825 five-year regional transportation plan announced in January 2014. A separate project on US 90 is converting the US 90 access roads to one-way and building a turnaround
from WB to EB US 90 at Loop 1604, which should remove an appreciable
amount of traffic from the intersections at Loop 1604.
How
this
project will help:
Staggering ongoing growth in this area of
San
Antonio necessitates upgrading this
roadway. The new
expressway
lanes with
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
connector to
US 90 will remove that traffic from the remaining signalized
intersections
at US 90.
Timeline: Construction began in early 2017 and is scheduled to be complete in early 2020. Click here for the latest status.
Schematics: Below
are cross sections and full schematics for this project. The
schematics are divided into the northern and southern sections; click
on the section to see an annotated overview schematic of each
segment of
this project. These plans are courtesy of TxDOT and are
subject to
change. Annotations are my own.
(Note: The
schematics below
are somewhat large and may take a few seconds to open.)
 
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