LAS VEGAS (KLAS) — Drivers heading to Zion National Park this upcoming summer will see new restrictions aimed at improving safety and protecting one of the park’s most iconic roadways.
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Park officials announced that starting June 7, 2026, large vehicles will no longer be allowed to travel a stretch of the Zion–Mt. Carmel Highway, the scenic route that connects Canyon Junction to the park’s East Entrance.
The change affects vehicles that exceed 35 feet 9 inches in length, 7 feet 10 inches in width, 11 feet 4 inches in height, or 50,000 pounds. Combined vehicles — such as trucks pulling trailers — must also stay under 50 feet total, with no more than 26 feet from the hitch to the rear axle.
According to the National Park Service, the limits are based on multiple safety studies spanning decades. Those studies found oversized vehicles struggle to stay within narrow lanes, cannot safely pass through the Zion–Mt. Carmel Tunnel in a single lane, and may exceed the weight limits of four historic bridges along the route…