Congress Avenue Bridge Bats

Ann W. Richards Congress Avenue Bridge

The world’s largest urban bat colony roosts beneath this bridge. On summer evenings, about 1.5 million Mexican free-tailed bats pour out.

After the bridge was rebuilt in 1980, the gaps beneath it became an ideal roost for Mexican free-tailed bats, whose numbers in summer reach 1.5 million. Around sunset, for about 20 to 40 minutes each day, the bats stream from under the bridge like a black ribbon and head east over the lake to forage.

Viewing is free. Stand on the east sidewalk of the bridge or at the Statesman bat-viewing lawn at the bridge’s southeast corner, or take a bat-watching boat on the lake (about 15–20 US dollars). Emergence times vary, so check Bat Conservation International’s daily estimates.

Opening hours

All day; best viewed at sunset

Bats · Dusk · Free entry · Natural wonders

Nearby sights

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