California State Route 89

State Route 89
Map of northern California with SR 89 highlighted in red
Route information
Maintained by Caltrans
Length	243 mi[1] (391 km)
Tourist routes	Monitor Pass and Luther Pass Highways, and Lake Tahoe Road[2] Yuba-Donner Scenic Byway Volcanic Legacy Scenic Byway
Restrictions	Segments through Monitor Pass and Lassen Volcanic National Park closed in winter
Major junctions
South end	US 395 near Coleville
Major intersections	SR 4 near Topaz Lake SR 88 from Woodfords to near Picketts Junction US 50 in South Lake Tahoe I-80 in Truckee SR 49 from Sierraville to near Sattley SR 70 from Blairsden to near Indian Falls SR 36 from near Chester to near Mineral SR 44 in Lassen Park SR 299 in Burney I-5 near Mount Shasta
North end	I-5 BL near Mount Shasta
Location
Country	United States
State	California
Counties	Mono, Alpine, El Dorado, Placer, Nevada, Sierra, Plumas, Tehama, Shasta, Siskiyou
Highway system
State highways in California Interstate US State Scenic History Pre‑1964 Unconstructed Deleted Freeways
← 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]