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San Antonio Area Freeway System
PROJECT INFO: US 90 West at Loop 410

This page last updated March 20, 2017

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Project locationLocation: US 90 from Loop 1604 to Loop 410 and Loop 410 from US 90 to SH 151

Status: Phase 1 is under construction (59% complete); Phase 2 is under construction (1% complete)

Description: Originally a single project, this project has now been divided into two phases due to funding limitations.  The first consists of a package of improvements for US 90 between the loops.  Those improvements include expanding US 90 to six lanes between Hunt Lane and Loop 1604, converting the access roads to one-way, straightening the access roads near Hunt Lane, reconfiguring the westbound access road intersection at Hunt Lane, adding a new exit ramp from westbound US 90 for Hunt Lane and moving the entrance ramp to westbound US 90 from Loop 410 past Hunt Lane.  A turnaround for westbound to eastbound US 90 will be constructed at Loop 1604 and a second right-turn lane to northbound Loop 1604 will be added. 

The second phase will construct the first two connectors of an eventual fully-directional interchange at Loop 410 and US 90.  Specifically, this phase will construct the eastbound US 90 to northbound Loop 410 and southbound Loop 410 to westbound US 90 elevated connectors.  (Note: the original iteration of this project only included the eastbound to northbound connector.  Additional funding was subsequently identified to add the southbound to westbound connector.)  In addition, on northbound Loop 410, the entrance ramp from Marbach and the exit ramp to SH 151 will be reversed (i.e. the exit to SH 151 will now precede the entrance from Marbach.)  On southbound Loop 410, the entrance ramp from Marbach will be moved further south to after the exit for US 90.

How this project will help: Adding the first elevated direct connector from eastbound US 90 to northbound Loop 410 will remove that traffic from the current overburdened cloverleaf.  Doing so should eliminate or signficantly reduce the weaving that currently takes place on the eastbound collector road in the interchange, thus making the connection from southbound Loop 410 to eastbound US 90 flow more smoothly.  Moving the westbound entrance from Loop 410 past Hunt Lane will provide a much longer area for traffic to safely merge to the left to enter US 90.  Converting the access roads to one-way and straightening them will result in safer and more efficient operation.  The additional lane on US 90 will help improve traffic flow.  The turnaround at Loop 1604 will help prevent congestion at the Loop 1604 intersections as it will remove traffic making that movement from the intersections.  The additional right turn lane onto Loop 1604 northbound will reduce congestion there.  Finally, the moving of the entrance and exit ramps on Loop 410 near Marbach will help eliminate the conflicts caused by traffic entering the freeway prior to traffic exiting for SH 151 and US 90.

Timeline: Phase 1 should be complete mid 2017.  Phase 2 is scheduled to be complete in mid 2019.  Click here for the latest status.  

Schematic: Click on the image below to see an annotated overview schematic of this project.  The base schematic is courtesy of TxDOT; the annotations are my own.  Note that the southbound to westbound connector was added to this project after this schematic was rendered; I have added it in its approximate location.

 (Note: the schematic is somewhat large and may take a few seconds to open.)

US 90 (Loop 1604 to Loop 410) and Loop 410 (US 90 to SH 151) (2.36 MB)

Click on image above to see larger schematic



Other sites of interest
TxDOT - I-410 Interchange Improvements
http://www.txdot.gov/inside-txdot/projects/studies/san-antonio/i-410.html




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This page and all its contents are Copyright 2017 by Brian Purcell

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