A cattle grid (by British standards) – also known as a stock grid or krud knocker in Australia; or a cattle stop in New Zealand.
A cattle guard, a vehicle pass, a Texas gate, or stock gap as they know all around the United States.
I think I like Krud Knocker the best.
Highways aren’t the only place that you’ll see a cattle guard. Sure didn’t need to stop a train to open the gate!
Most cattle guards are made from pipe but if railroad rail is available, it makes a good sturdy cattle guard.
Angora Chronicles 
Ronnie,
Growing up in the edge of West Texas, all our old county roads had bumper gates and there are about as many stories about what happened with those gates as there were gates. My list of things to do has putting together a paper about those bumper gates. Maybe someday before I kick the Bucket.
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Let me know when you get it done.
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