I was recently driving though southern Oklahoma to meet a friend for a day of hiking and photography.
Early in my trip I approached the U. S. 377 bridge over the South Canadian River. Before I got to the bridge, I saw the sun just begin to peak above the horizon, and fog rising from the water. I knew an image was imminent, and I expected the best vantage point would be from the center of the bridge, which is about 150 yards long including the guardrails.
As I drove across the bridge, I saw that I was right: an incredible photo opportunity was unfolding. I also knew I could neither park on the bridge, nor shoot it from my moving vehicle. I parked on the north end of the bridge, grabbed a camera, and literally ran to the center of the bridge, since I knew the moment was fleeting at best, and light at sunrise and sunset can change in just a few seconds.
It was cold out. The shoulder of the highway was narrow. Cars and trucks sped past me. It was a slightly hostile environment, but I knew I wanted the image, and this was the only way to get it.
As you can see, going out on a limb, or a bridge, can definitely pay off.
Also see: Beyond Lock Rock, a Day in the Wichitas.