California State Route 89

State Route 89 marker
State Route 89
Map of northern California with SR 89 highlighted in red
Route information
Maintained by Caltrans
Length243 mi[1] (391 km)
Tourist
routes
RestrictionsSegments through Monitor Pass and Lassen Volcanic National Park closed in winter
Major junctions
South end US 395 near Coleville
Major intersections
North end I-5 BL near Mount Shasta
Location
CountryUnited States
StateCalifornia
CountiesMono, Alpine, El Dorado, Placer, Nevada, Sierra, Plumas, Tehama, Shasta, Siskiyou
Highway system
← SR 88→ SR 90

State Route 89 (SR 89) is a state highway in the U.S. state of California that travels in the north–south direction, serving as a major thoroughfare for many mountain communities in the Sierra Nevada and the Cascade Range. It starts from U.S. Route 395 near Topaz Lake, winding its way up to the 8,314-foot (2,534 m) Monitor Pass, down to the Carson River, and up again over the 7,740-foot (2,359 m) Luther Pass. From that point on, the route generally loses elevation on its way past Lake Tahoe, through Tahoe and Plumas National Forests until Lake Almanor. For roughly nine miles the route is then a part of State Route 36. The route then ascends to the 5,753-foot (1,754 m) Morgan Summit. After it enters Lassen Volcanic National Park it continues to gain elevation until it reaches its highest point in an unnamed pass in the middle of Lassen Peak and Bumpass Mountain. The road then descends and heads northwest, finally terminating at Interstate 5 at the foot of Mount Shasta at around 3,600 feet (1,100 m).[3][4]

  1. ^ Cite error: The named reference bridgelog was invoked but never defined (see the help page).
  2. ^ California Department of Transportation (August 2019). "Officially Designated State Scenic Highways and Historic Parkways" (XLSX). Sacramento: California Department of Transportation. Retrieved March 27, 2019.
  3. ^ Google Earth elevation for GNIS coordinates.
  4. ^ California State Map, 2007.