Down to the River
At 5.02 miles, look for a few use-trails on your right that scramble down to the river. There are several excellent swimming holes, and many perches to watch bungee jumpers leap off the bridge. When you're done experiencing this unique area, ascend back to the main trail and return the way you came in.
If you'd like, you can also continue about 360 feet further along the trail to the ruins of a very small tunnel. This was supposed to connect to the Bridge, but was abandoned when the rest of the road was washed out.
You can also continue .25 miles farther along the trail as it crosses the river again and travels into The Narrows -- Southern California's deepest gorge. There is an unimproved Trail Camp here that's popular with anglers and adventurers alike. Do not try to camp near the Bridge -- it is private property.