Ultimate Interstates:West Coast

California-Nevada Map

Northern California Map

Central California Map

Southern California Map

Western Nevada Map

California and Nevada would see a number of interstate improvements. The map below shows these various improvements. Solid Blue Lines indicate new free and purple indicates toll interstate routes. Dotted lines show additional Proposed routes or alternative routes. Red and Green (toll) lines show existing Interstate highways. Click on a shaded region below to view more detailed information about interstate ideas for that area

Corridor 1

Ultimate Interstate 1 is an interstate highway corridor that travels up the California Coastline from Los Angeles to San Francisco. This route could also be extended northward along the Oregon and Washington coastline to Olympia, WA.

The route would largely replace US 101 throughout most of the state. However through the bay area it would replace I-880 along the east bay and cross using the San Rafael bridge (I-580) which is where it would route back over to back to the US-101 alignment northward. Main Article

Corridor 9

This Central California interstate would replace existing SR-99 throughout most of the state of California. Traveling from Red Bluff to Mettler via Chico along existing SR-99 the route then switched to SR-70 through Oroville and Marysville before rejoining SR-99 near Nicolaus, the route then continues along I-5 through Sacramento, and then along SR-99 through the cities of Modesto, Fresno, and Bakersfield.

Corridor 11

Originating from Gila Bend, Arizona I-11 travels north into Nevada crossing the new Colorado River Bridge near the Hoover Dam. This interstate would replace existing US-93 and I-515 south of Las Vegas. North of Las Vegas the route will generally follow US-95 northward throughout the state north through Fallon. I-11 would be cosigned with I-80 from Fallon Junction to Winnemucca before continuing north along US-95 into Oregon. Eventually the route continues north toward Boise and Lewiston eventually ending in Spokane.

I-70 Extension

From its existing terminus in Utah, this interstate would generally follow existing US-50/6 route to Ely. From there the interstate would continue west along one of two possible routes. From Ely the northern route follows along US-50 to Fallon and then ends in Fernley terminating at I-80. The southern route would generally follow US-6 toward Tonopah and Bishop connecting to I-11 and ending at I-9 where at some point it could be extended westward into California as a second interstate route to the California Central valley and Bay Area region.

High Desert Conceptual Corridor

This conceptual interstate corridor includes sections of CA-14, US-395, and US6. Beginning at the current I-5/SR-14 junction in Santa Clarita and continuing north along the Antelope valley Freeway (CA-14) through Lancaster. The route continues north onto existing US-395 heading toward Bishop CA. From there I-9 would follow the US-6 alignment heading into the state of Nevada where it would travel on a new alignment generally following along NV route 360 and ending at the planned I-11 West of Tonopah near the existing US 95 and NV-360 turnoff. The route could also be continued eastward along US-6 providing a connection to I-70 in Utah.

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