The trail was used by pedestrians, equestrians and bicyclists trying to get to and from their homes.
The Kopits said they built the wooden gates to protect their property.
Friday, a judge sentenced them to three years probation and imposed a $1,000 fine.
They were also ordered to pay more than $47,000 in restitution to the city.
Todd Kopit was also sentenced to 90 days in jail.
That sentence was suspended on the condition that he serves 15 days of manual labor.