Natural Bridge Trail

Overview

A short, mostly shaded stroll to one of Yellowstone’s easier-to-reach rock features, the Natural Bridge. Expect an easy grade through fir forest on trail and old service road to a graceful arch carved by Bridge Creek through a cliff of rhyolite. It’s an out-and-back with a small loop feel near the end. Most hikers log about 3.1 miles round trip (plan 1–2 hours), with effort bumping up if you take the short, steep spur to the viewpoint above the arch.

Route and Options

The most straightforward start is from the Bridge Bay Marina area, where the path meanders through the woods before joining an old service road to the base of the bridge. There’s also a tiny pullout at the bicycle gate across from the exit of Gull Point Drive; from there you can walk or bike the old road toward the bridge. Bikes must stop where the footpath begins—no bikes are allowed on the trail around the arch. Near the bridge, a brief set of switchbacks climbs to a higher vantage; rocks can be slick when wet.

What You’ll See

The star is a roughly 51‑foot rhyolite natural arch that Bridge Creek has cut through the cliff—classic Yellowstone volcanics meeting stream erosion. The base area is a pretty, photogenic nook with moving water, filtered light, and forest shade. Views from below are the safest and best; the top of the bridge is closed to protect this fragile feature.

Regulations and Safety

Seasonal wildlife closures are common in early summer while bears feed on spawning trout in Bridge Creek. Check the daily status before you go, and carry bear spray. Hike in groups, make noise, and give all wildlife space. The rocks by the creek can be wet and slippery. No pets on the trail. Bikes are allowed only on the old road portion, not on the footpath to or around the arch. An entrance fee is required to access the park (per vehicle, valid for 7 days).

Best Time to Hike

Mid to late summer into early fall is the most reliable window, after bear-related closures typically lift. Spring through September can be lovely, but verify the status if you’re visiting in early summer. Aim for morning or late afternoon for softer light on the arch and cooler temps. If the small bike-gate pullout is full, start from the marina lot.

Bottom Line

This is an easy, family-friendly outing with a high payoff for the effort. It’s not the grand scale of the Southwest’s arches, but it’s a worthy stop—especially if you’re staying near Bridge Bay or want one of the park’s rare bike‑friendly approaches on an old road. Stay off the top, respect closures, and enjoy the shaded forest walk to a uniquely Yellowstone formation.