Camden Street Bridge

Texas hill country Region

The San Antonio River is home for many species of wildlife. Nestled under the I-35 Bridge where it crosses the San Antonio River near Camden Street, a colony of approximately 50,000 male Mexican free-tailed bats roost during the summer months. Located along the Museum Reach segment of the San Antonio River Walk, the expansion joint under the concrete bridge is the perfect home for these nocturnal mammals who thrive on tight, cozy, and warm spaces. The colony’s close proximity to the water of the San Antonio River gives the bats an open area to glide through when they emerge for their nightly feedings of agricultural pests.

The Museum Reach segment of the River Walk, from Lexington Avenue north to Josephine Street, is approximately 1.3 miles and provides a hike and bike trail, public art installations by world-renowned artists, elegant water features, and access to restaurants and shops. The San Antonio River Authority (SARA), in partnership with Bat Conservation International (BCI) and Texas Parks and Wildlife Department (TPWD), hosts annual “Bat Loco” events at the intersection of Camden and Newell streets to highlight the bat colony, educate the public about the importance of bats, and spread awareness of bat conservation. The annual “Bat Loco Bash” in August concludes the event series with live music, food trucks, educational booths, kids’ activities, and, of course, the bats!

Visitation Info


  • Free


None Required


Bats can be viewed April through October at sunset

ADA Accessible




Contact Information

  • (866) 345-7272 (San Antonio River Authority)
  • Visit the website for information on the Museum Reach, Bat Loco events and to download a trail brochure


Location & Directions

Bat Fact

There are over 1,300 different kinds of bats found in the world and 32 bat species known to occur in Texas.