That's where you are supposed to see them, kind of, no big surprise here. It may sound surprising to some, given that bees travel by air, but they aren't good at crossing roads. When returning home after collecting the nectar they fly low and get literally hit by cars. So, apparently that place where you were running had a colony of bees on one side of the road, and their preferred food on the other, so a lot of bees were commuting daily over that dangerous place.
and then the whole phenominon moves up the food chain to crows, specificaly young crows that discover that they can get easy pickings along
certain stretches of roads,only to become road kill themselves,see it each year about this time
anapolis valley to HRM