Cattleguard

A device or structure, at points where roads or railroads cross a fence line, that is so designed that vehicular travel is uninterrupted but crossing by all kinds of livestock is restricted. Syn. Autogate

Source
Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.