California State Route 203

State Route 203
Route information
Defined by Streets and Highways Code § 503
Maintained by Caltrans
Length:	8.67 mi[1] (13.95 km)
Major junctions
West end:	Minaret Summit
East end:	US 395 near Mammoth Lakes
Highway system
State highways in California List Pre-1964 History Unconstructed Deleted Freeway Scenic ← SR 202 SR 204 →

State Route 203 is a state highway within Mono County, California, USA. 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.

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).^[2] Segments that remain unconstructed or have been relinquished to local control may be omitted. The entire route is in Mono County.

Location	Postmile [2][3][4]	Destinations	Notes
	L0.00	Minaret Summit Road – Devils Postpile National Monument	West end of SR 203
	R3.80	Mammoth Scenic Loop Road to US 395
Mammoth Lakes	4.78	Lake Mary Road – Lake Mary
	R8.67	US 395 – Lee Vining, Bishop	Interchange; east end of SR 203
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

• California Roads portal

Route map: Bing

References