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San Antonio
Freeway system
  Fwy system history
  2016 traffic statistics
  The freeways
    I-10 East
    I-10 West
    I-35 North
    I-35 South
    Kelly Pkwy
    Loop 410 (I-410)
    Loop 1604
    SH 151
    Spur 371
    US 90 West
    US 281 North
    Wurzbach Pkwy
  Construction projects
    I-10E Expansion
    I-35/Loop 410
    I-35 NEX
    LP 1604 North
    LP 1604/Bandera
    LP 1604/Blanco
    LP 1604/Bulverde
    LP 1604/Kitty Hawk
    LP 1604/Potranco
    LP 1604/US 90
    SH 151/LP 1604
    SH 151/Loop 410
    US 90/Loop 410
    US 281 North
    HOV lanes
    Media galleries
    Tollway system
    10/1604 yield signs
    History of 281/410
Other roads





The San Antonio Area Freeway System

This page last updated November 9, 2018
San Antonio skyline w/freeway in foreground
(TxDOT photo) 

Since the first expressway opened in 1949, the San Antonio metropolitan area has enjoyed one of most progressive and comprehensive urban freeway systems in North America. For many years, San Antonio was second only to Los Angeles in the number of freeway miles. While most US cities now have extensive freeway systems, Bexar County still has one of the largest systems of state highways in the nation and one of the highest ratios of freeway miles per capita in the US. In 2014, there were 1,004 centerline miles and 3,384 lane miles of state-maintained roadways in Bexar County. Approximately 256 centerline miles and 1,900 lane miles of that total were freeways. A study by the Surface Transportation Policy Project in 1998 ranked San Antonio's highways as the best among the largest US urban areas.

This site covers the San Antonio freeway system in-depth. Below, you'll find links to general information about the local freeways, their history, and pages with in-depth details about each freeway. There's also information on some other area highways, details of freeway construction projects, information about TransGuide, and lots of photos.


General information

Includes lots of basic information about the freeway system including layout, statistics, frontage roads, turnarounds, double-decked freeways construction, and signage, as well as the conventions used on this site.
Answers to some of the most common questions I hear about San Antonio's freeways and other local roads.
Freeway system history
A history of the evolution of the San Antonio freeway system.
2016 traffic statistics
Freeway traffic counts and general statistics.

The freeways

Below you can access detailed information about each freeway, including a description of the route and the length covered, lane and access road configuration, a description of the general traffic conditions and traffic counts, a complete list of exits in each direction, speed limits, special features, current construction, future plans, and as much history as I know about the route.

I-10 WestI-35 NorthI-35 SouthI-10 EastI-37I-37US 90 WestSH 151US 281 NorthSP 371Kelly ParkwayKelly ParkwayWurzbach ParkwayLoop 1604Loop 1604Loop 410Loop 410Loop 410Loop 410Loop 410Loop 410Loop 1604Loop 1604Loop 1604Wurzbach ParkwayUS 90Loop 410

Click on a freeway segment on the map above or on one of the links below

Construction projects


Other sites of interest

TxDOT- San Antonio District
Alamo Area Metropolitan Planning Organization
Alamo Regional Mobility Authority
VIA Metropolitan Transit
San Antonio Advanced Transportation District
City of San Antonio Public Works
San Antonio Mobility Coalition
TexasFreeway.com (by Ron Jackson)
Houston Freeways
Dallas-Ft. Worth Freeways

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This page and all its contents are Copyright 2018 by Brian Purcell

The information provided on this website is provided on an "as-is" basis without warranties of any kind either express or implied.  The author and his agents make no warranties or representations of any kind concerning any information contained in this website.  This website is provided only as general information.  The author expressly disclaims all liability with respect to actions taken or not taken based upon the information contained herein or with respect to any errors or omissions in such information.  All opinions expressed are strictly those of the author.  This site is not affiliated in any way with any official agency.