Siskiyou Summit

Siskiyou Summit (also Siskiyou Mtn. Summit; also referred to as Siskiyou Pass) is a summit (high point) on Interstate 5 (I-5) in the U.S. state of Oregon. It is distinct from Siskiyou Pass, which is a nearby, historical mountain pass. Siskiyou Summit is situated in the Siskiyou Mountains, approximately 4 miles (6.4 km) north of the California border. At 4,310 feet (1,310 m), it is the highest point on Interstate 5. When the highway was rebuilt on its current alignment, road cutting lowered the elevation of the summit by 49 feet (15 m).

Geography

The Siskiyou Mountains form the watershed boundary between the Klamath and Rogue Rivers and are also a rough natural separator between Oregon and California. The summit on Interstate 5 is about 25 miles (40 km) north of Yreka, California, and 0.5 miles (0.80 km) east of the historical Siskiyou Pass, the most used mountain pass in the state. The Pacific Crest National Scenic Trail crosses the highway here on the way to Mexico from Canada.