The “Track Crossings” scheduled during the U.S. Grand Prix at Mazda Raceway Laguna Seca are to expedite race fans across the track. Last year, waits to cross the start/finish and Dunlop Tire bridges were up to 45 minutes long. The bridges will remain open this year above the Track Crossings, where Astroturf will be temporarily laid across the track to accommodate foot traffic.