Kootenai Falls & the Swinging Bridge: Northwest Montana's Best Short Adventure | Shangrilog

If you're looking for a big payoff with a small time commitment, few spots in northwest Montana deliver like Kootenai Falls. Tucked along US Highway 2 between Troy and Libby, this stretch of the Kootenai River gives you the largest undammed waterfall in the state plus a suspension bridge that hangs high above a rocky gorge—all in a walk most people finish in under an hour.

Finding the trailhead

The parking area sits right on US-2, roughly six miles east of Troy and about twelve miles west of Libby, near milepost 21 at the Kootenai Historical Marker. The brown historical signs are your cue to slow down before the pull-off. Because the lot is highway-adjacent, you're on the trail almost as soon as you park. A seasonal concession stand usually runs May through September with snacks, souvenirs, and local info, and restrooms are on site.

What the walk is like

Plan on a short out-and-back of about 1.5 miles roundtrip with gentle elevation gain. A paved path leads past picnic spots, then a set of stairs carries you over a covered pedestrian bridge that crosses an active rail line—keep kids close through this section. On the far side, a signed fork lets you choose the falls to the right or the swinging bridge to the left. Do both. Each angle on the river feels distinct, and neither adds much walking.

The falls overlook winds through forest with benches and viewpoints before dropping toward the water. During low flow you can carefully explore the exposed rocks; during spring runoff, keep well back, because nothing separates you from the river's full force. The suspension bridge stretches a couple hundred feet over turquoise water and sways gently underfoot—thrilling for some, a bit nerve-wracking for others, but rewarding either way.

A little history

The original bridge was built by the Civilian Conservation Corps in 1937 so the Forest Service could reach fires across the river. A 1948 flood took it out, and it was rebuilt on concrete towers in the 1950s. The rock beneath you is far older—more than a billion years—and if you look closely near the newer bridge, you can spot ancient ripple marks and fossilized algal mounds called stromatolites.

When to go

Late May through mid-June brings peak runoff and the most dramatic water. Summer is warmest and busiest, so aim for early morning or dusk if you want quiet. Fall trades crowds for golden larch on the slopes, and winter can turn the falls into a curtain of ice—beautiful, but watch for icy roads and slick stairs.

A few practical notes

There are no barriers near the water, so give the river a wide margin and hold onto children. The area is home to bighorn sheep, elk, and black bears, so store snacks sensibly and keep your distance. Sturdy shoes help on the rocky, root-crossed trail, and leashed dogs are welcome, though the grated metal stairs can be tough on paws.

Kootenai Falls makes an easy half-day trip from the Bull Lake area, leaving plenty of time for the lake itself afterward.

Planning a Montana getaway? Shangrilog, a handcrafted log cabin on private Bull Lake shoreline near Troy, sleeps up to 10 and sits a short drive from the falls. Reach out at (406) 295-0100 to check available dates—we'd love to host your stay.

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