If I saw them and know that I would kill them then I would go off the bridge.
PROBLEM: You are travelling down a huge hill on a bike and the brakes are shot. At the end of the road there is another road running perpendicular to the road you are on. The road you are currently on terminates with a metal fence fastened into concrete. There are houses and cars on the left, a curb, sidewalk, and then a paved lot on the right. You are already halfway down the hill and travelling >20 MPH.