Antonio Area Freeway System
I-10 East/Loop 410 Interchange
page last updated April 24, 2021
project has been updated
descriptions on this page were based on preliminary schematics and have
The information below is based on the construction bid plans. However,
some details could still change after construction starts.
I-10 East from Commerce to Foster and Loop 410 from Rigsby to I-35 North
Phase 1 construction starting soon (see timeline below.)
Phase 2 unfunded
$450 million project will replace the existing obsolete
I-10 East and Loop
410 with a five-level interchange with flyover connectors and
continuous access roads through the interchange on both I-10 and Loop
410. Those access roads will intersect at signalized intersections
the interchange (similar to the Loop 1604/US 281 or Loop
151 interchanges), allowing for full local access in all directions.
The first phase, costing about $166 million, will include the following:
The Loop 410 northbound to I-10 eastbound flyover (preliminary plans to include the Loop 410 southbound flyover to I-10 eastbound in this phase have been dropped)
I-10 westbound to Loop 410 southbound flyover (this flyover will top-out at about 120 feet!)
- Ramp relocations and access road improvements on southbound Loop 410 between I-10 and
of the Loop 410 southbound mainlanes from I-10 to Rigsby including the
addition of a 3/4 mile auxiliary lane from the new entrance from I-10
the existing ramps in the cloverleaf will be removed in Phase 1;
however, the movements that remain in the cloverleaf
should see substantially improved operation as the traffic using the new flyovers will no longer be using the
cloverleaf, thus reducing weaving conflicts in several areas.
The remaining flyovers will be built in a future phase. In
addition to the main interchange, a future phase will also make the
following major improvements along Loop 410 north of I-10:
following additional improvements elsewhere in the vicinity will also
an overpass at WW White Rd. and connect WW White to Cornerway Blvd.
a Displaced Left Turn (DLT)
interchange at the new WW White Rd./Cornerway Blvd./Loop 410
the existing northbound Loop 410 left-hand exit to I-35
southbound with a right-hand exit and underpass
the Loop 410 mainlanes
continuous access roads in both directions of Loop 410 over FM
78 and the adjacent railroad
a continuous southbound access road through the Loop 410/I-35
southbound cutoff (near WW White) with crossovers/turnarounds
the existing exit to FM 78 from the I-35 northbound to Loop 410
southbound connector and replace with a conventional exit ramp to a
realigned frontage road providing access to WW White Rd. and FM 78 (via
a continuous access road on I-10 westbound between Loop 410
and WW White Rd.
turnarounds at WW White Rd.
various entrance and exit ramps along I-10 between Loop 410 and
project will help
interchanges are over 50 years old and are now obsolete. Growing
traffic volumes in these corridors, including increasing truck traffic
from the numerous nearby warehouses, is straining these old
interchanges. The new interchanges will accommodate current and future
traffic volumes and improve safety. The new underpass connecting WW
White to Cornerway
will improve local circulation by providing a new route to northbound
Loop 410 from WW White and to southbound Loop 410 from the Cornerstone
industrial park. Building this new intersection as a DLT will help it
accommodate expected traffic volumes well into the future. Adding the
new continuous frontage roads and turnarounds through the I-10/Loop 410
interchange, along Loop 410 near FM 78 and WW White, and also along
I-10 westbound near WW White will provide improved local access and
allow more optimal placement of entrance and exit ramps in the area.
Adjusting other ramp locations in the project area will bring them to
modern standards and
improve traffic flow and safety.
1: Construction expected to start in mid 2021 and be completed in mid 2024.
Below are the detailed schematics for this
project from TxDOT with my own annotations added to help clarify and
explain the various elements. Click on
an image below
to open the schematic in a new window that you can scroll and zoom.
that the schematics used here are preliminary and subject to change.
The complete project plans show an obsolete proposal for the I-10
mainlanes; the Phase 1 plans include the revised mainlane plans, which which are acutally currently under construction.as part of a separate project on I-10.
The Phase 1 plans here were preliminary and have since changed. These changes are noted in the annotations.
Complete (ultimate) project
sites of interest