Ann W. Richards Congress Avenue Bridge was created in 1910.
Not sure if this is what you're after, but the Ann W. Richards Congress Avenue Bridge is home to the world's largest urban bat colony, with 1.5 million bats.
Richards Covered Bridge was created in 1852.
Western Avenue Bridge was created in 1924.
Main Avenue Bridge was created in 1939.
Laurier Avenue Bridge was created in 1900.
Perry Avenue Bridge was created in 1899.
Victoria Avenue Bridge was created in 1890.
Mary Avenue Bridge was created in 2008.
Plymouth Avenue Bridge was created in 1983.
Michigan Avenue Bridge was created in 1920.
First Avenue Bridge was created in 1920.
Franklin Avenue Bridge was created in 1923.