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San Antonio Area Freeway System
PROJECT INFO: US 90W from Loop 410 to Loop 1604

This page last updated November 1, 2020


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


Originally a single project, this project was divided into two phases due to funding limitations. The first consisted of
a package of improvements for US 90 between the loops. Those improvements included expanding US 90 to six lanes between Hunt Lane and Loop 1604 (the additional lane technically being a very long auxiliary lane), 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 was constructed at Loop 1604, and a second right-turn lane to northbound Loop 1604 was added. This phase has been completed.

The second phase constructed the first two connectors (flyovers) of an eventual fully-directional interchange at Loop 410 and US 90. Specifically, this phase built the eastbound US 90 to northbound Loop 410 and southbound Loop 410 to westbound US 90 flyovers. The original iteration of this project only included the eastbound to northbound connector. Additional funding was subsequently allocated to add the southbound to westbound connector. In addition, on northbound Loop 410, the exit ramp to Marbach was moved further south to avoid conflicting with the new connector from US 90, and the entrance ramp from Marbach and the exit ramp to SH 151 was reversed (i.e. the exit to SH 151 now precedes the entrance from Marbach.) On southbound Loop 410, the entrance ramp from Marbach was moved further south to after the exit for US 90.

How this project will help
Adding the elevated direct connector from eastbound US 90 to northbound Loop 410 removes that traffic from the current overburdened cloverleaf. Doing so has significantly reduced the weaving 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 entrance and exit ramps on Loop 410 near Marbach eliminated the conflicts caused by traffic entering the freeway prior to traffic exiting for SH 151 and US 90.

This project is complete. The eastbound to northbound connector opened on November 2nd, 2018. The southbound to westbound connector opened sometime around February 14th, 2019. Click here for the latest status.  

Click on the image below to open the detailed schematic for this project from TxDOT with my own annotations added to help clarify and explain the various elements. The schematic will open in a new window that you can scroll and zoom. 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.)

Click on image above to see larger schematic


Below are driver's view videos of the interchange flyovers shortly after opening.

Loop 410 southbound to US 90 westbound

US 90 eastbound to Loop 410 northbound

Other sites of interest
TxDOT - I-410 Interchange Improvements

This page and all its contents are Copyright 2023 by Brian Purcell

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