There was a police officer directing the access to that intersection.
That "group" was only one of about 6 I believe, that rode in a group, they were coming in from the east.
in 2000 the route came right past my house, and we tried to count the bikes, lost track around 2,000. It was an endless roar for almost 20 minutes.
I have ridden in the first 2 Louie runs, way back when it started. I knew the fellow the ride was named after, and drank in his bar frequently in the mid 70's, early 80's.
It was an interesting bar / crowd back then, and one of a couple local holes within a mile stretch that were biker friendly. Then it went downhill./