Overview
The Bridge to Nowhere is exactly what it sounds like: a concrete arch bridge built in 1936 that now stands in the middle of a wilderness canyon, connected to nothing. The road it was meant to serve was destroyed by a massive flood in 1938 before it was ever completed, and the bridge has stood abandoned in the Sheep Mountain Wilderness ever since.
Getting to it requires a 10-mile out-and-back hike along the East Fork of the San Gabriel River with multiple creek crossings (you will get your feet wet), some boulder hopping, and a fair amount of river valley walking. The trail is not technically difficult, but the distance, the uneven terrain, and the water crossings make it a solid moderate hike. It's one of the most unique destinations in Angeles National Forest.
The bridge is also a commercial bungee jumping operation on weekends. If you don't want to bungee, you can watch others jump from the 120-foot span, which is entertaining in its own way.
The Route
Miles 0 to 2: Heaton Flat to the Narrows. The trail starts at Heaton Flat and follows the old road grade along the East Fork. The first section is wide and flat, passing through riparian vegetation and occasional boulder fields. The first creek crossings begin here: expect ankle-to-knee-deep water depending on the season and flow.
Miles 2 to 3.5: The Narrows. The canyon walls close in and the trail becomes rougher. You'll be walking on river rock, crossing the creek multiple times, and picking your way through narrow sections. The narrows are scenic, with steep rock walls rising on both sides and sycamores and alders lining the creek.
Miles 3.5 to 5: Upper canyon to the bridge. The trail continues up the canyon with more crossings and some light scrambling over boulders. The canyon opens slightly before the bridge appears around a bend: a full-sized concrete arch spanning the canyon, completely disconnected from any road. It's a surreal sight.
At the bridge: Walk across the bridge (it's solid, despite its age) and take in the view up and down the canyon. The bungee operation runs on most weekends when weather permits. Spectating is free.
When to Visit
October through May is the primary season. Summer temperatures in the canyon can exceed 100 degrees, and the lack of shade in the narrows makes it brutal.
Winter (November through February): Creek levels are highest after rain. Some crossings may be knee-deep or higher. Check recent weather before going: the creek can flash flood during and after storms. Do not attempt this hike during or immediately after heavy rain.
Spring (March through May): Often the best window. Water levels are moderate, wildflowers appear in the canyon, and temperatures are comfortable.
Fall (October through November): Warm and dry. Creek levels are at their lowest, making crossings easiest. Good visibility.
What to Bring
- Water shoes or sturdy sandals: You will cross the creek many times. Some hikers wear water shoes for the crossings and switch to hiking shoes for the dry sections. Others just wear hiking shoes and accept wet feet. Avoid cotton socks.
- Water: 3 liters per person minimum. More in warm weather. There is limited shade in the canyon.
- Trekking poles: Very helpful for balance during creek crossings on slippery rocks.
- Dry bag or ziplock bags: Protect your phone, wallet, and car keys.
- Lunch: The bridge is a great lunch spot. Pack something substantial for the 5-mile return trip.
Practical Details
Parking: The Heaton Flat Trailhead has a dirt lot with about 30 spaces and vault toilets. An Adventure Pass is required ($5/day or $30/year). The lot is usually adequate on weekdays but can fill on weekend mornings.
Dogs: Allowed on leash. Dogs will need to swim or wade through the creek crossings. Some crossings may be too deep for small dogs during high water.
Creek crossings: This is the defining feature of the hike. Expect 8 to 12 crossings depending on the route you take and the water level. In summer and fall, most crossings are ankle-deep. After winter rains, they can be knee-deep or more. The rocks in the creek are slippery.
Flash flood risk: The East Fork drainage is prone to flash flooding. Do not hike this trail during rain or when rain is forecast. If you hear rushing water or see the creek level rising, get to high ground immediately.
Bungee jumping: A permitted operator runs bungee jumps from the bridge on weekends ($100+ per jump). You don't need to bungee to enjoy the hike, but watching the jumpers adds to the experience.
Getting There
From Los Angeles, take I-210 east to Azusa Avenue (SR-39) north. Follow SR-39 north, which becomes East Fork Road. Continue to the Heaton Flat Trailhead at the end of the paved road. Total drive time from downtown LA is about 1 hour.
The road to Heaton Flat can be closed after storms due to rockfall or flood damage. Check Angeles National Forest road conditions before driving up.
Beyond the Bridge
Experienced hikers can continue past the bridge deeper into the Sheep Mountain Wilderness. The canyon continues for several more miles, eventually reaching the Iron Fork and Mine Gulch drainages. These extensions are less traveled and require more serious route-finding. Some hikers use the bridge as a staging point for overnight trips into the upper East Fork.
For a shorter canyon hike in the same area, the East Fork Trail to the "Bridge to Nowhere Lite" (about 4 miles round trip) follows the lower canyon to a scenic narrows section without requiring the full 10-mile commitment.
Bridge to Nowhere is one of those hikes that has a story. The abandoned bridge, the creek crossings, the narrow canyon, and the bungee jumpers create an experience unlike anything else in Southern California. It's not the most scenic hike in the San Gabriels, but it might be the most memorable.
For a longer summit experience in the same forest, Mt. Baldy via Devil's Backbone is the premier San Gabriel Mountains challenge — the highest peak in the range at 10,069 feet. If you're looking for more waterfall options, Sturtevant Falls and Eaton Canyon Falls are both outstanding. San Gabriel Peak and Josephine Peak round out the best summit hikes in the front range.
The Adventure Pass required for parking here is also accepted at trailheads throughout Angeles National Forest. If you visit often, the $30 annual pass pays for itself quickly. For a full overview of the best day hikes accessible from the city, see the best hikes near Los Angeles guide.