just because the highway dosent acces it dosent mean its a closed road, "closed" road means it has legally been closed by the town or state for specific use of demonstrations of speed, you see this in movies and tv shows.
unless the town closed the road for you and police cars were at both ends preventing cars from coming on the road, then you were on an OPEN PUBLIC road.
oh and just because my screenname is cbr, dosent mean its my favorite. my favorite 600 is a kawi 636 and my favorite liter bike is an aprilla. i just happend to leagally own and ride a registed, and insured honda