When two Connecticut-bound cows escaped onto a busy Massachusetts highway, a cowboy stuck in the traffic jam came to the rescue.

State police say the man, wearing a Western hat and boots, lassoed each of the 500-pound heifers who were wandering on Interstate 91 South in Springfield Tuesday morning.

Troopers shut down the highway for about 30 minutes as the man helped load the animals back into the trailer that was carrying them to nearby Enfield, Conn.

The cows had escaped into slow-moving traffic near Exit 8 after a latch opened on the trailer.

Police say the cowboy did not want to be publicly identified.