California State Route 203

State Route 203 marker

State Route 203

SR 203 highlighted in red
Route information
Defined by Streets and Highways Code § 503
Maintained by Caltrans
Length: 8.67 mi[1] (13.95 km)
Restrictions: Segment from the Mammoth Mountain Ski Area west to Minaret Summit closed in winter
Major junctions
West end: Minaret Summit
East end: US 395 near Mammoth Lakes
Location
Counties: Mono County, California
Highway system
← SR 202SR 204 →

State Route 203 is a state highway within Mono County, California, United States. It runs from the Mono-Madera County line (Minaret Summit) to U.S. Route 395 passing through the town of Mammoth Lakes.

Within Mammoth Lakes, State Route 203 is known as both "Minaret Road" and "Main Street." It connects to Lake Mary and the Mammoth Scenic Loop via secondary roads.

Route description

The route begins at Minaret Summit at Devils Postpile National Monument. It then heads east to Mammoth Scenic Loop Road, where it continues at shortly enters the town of Mammoth Lakes, where it is known as both "Minaret Road" and "Main Street". It continues east to its end at U.S. Route 395.

Minaret Summit receives significant snowfall during the winter.[2] The road usually closes near the Main Lodge of Mammoth Mountain Ski Area before Thanksgiving and usually does not open much before Memorial Day.

Major intersections

Except where prefixed with a letter, postmiles were measured on the road as it was in 1964, based on the alignment that existed at the time, and do not necessarily reflect current mileage. R reflects a realignment in the route since then, M indicates a second realignment, L refers an overlap due to a correction or change, and T indicates postmiles classified as temporary (for a full list of prefixes, see the list of postmile definitions).[3] Segments that remain unconstructed or have been relinquished to local control may be omitted. The entire route is in Mono County.

LocationPostmile
[3][4][5]		DestinationsNotes
​L0.00Minaret Summit Road – Devils Postpile National MonumentWest end of SR 203
​R3.80 To US 395 / Mammoth Scenic Loop Road
Mammoth Lakes4.78Lake Mary Road – Lake Mary
​R8.67 US 395 – Lee Vining, BishopInterchange; east end of SR 203
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

References

  1. ↑ January 1, 2006 California Log of Bridges on State Highways
  2. ↑ "Subsection M261Eo - Glaciated Batholith". U.S. Forest Service. Archived from the original on 2007-08-13. Retrieved 2007-12-19.
  3. 1 2 California Department of Transportation. "State Truck Route List". Sacramento: California Department of Transportation. Archived from the original (XLS file) on June 30, 2015. Retrieved June 30, 2015.
  4. ↑ California Department of Transportation, Log of Bridges on State Highways, April 2008
  5. ↑ California Department of Transportation, All Traffic Volumes on CSHS, 2007

Route map: Google

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