The East Fork Access at the end of East Fork Road provides parking and trailhead access to the San Gabriel River's East Fork, a popular day-hiking destination featuring the historic "Bridge to Nowhere" and the scenic Narrows gorge.

The parking area is located 8 miles up East Fork Road from the lower San Gabriel River, with a locked gate preventing further vehicle access; an Adventure Pass is required for day-use parking. This access point serves as the primary trailhead for the 9.

5-mile round-trip hike to the Bridge to Nowhere, involving multiple river crossings, so wet footwear is necessary and visits should be avoided during heavy rainfall or high water conditions.