Corridor 11

Ultimate Interstate Corridor 11 - The Intermountain Corridor
Description 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.
Arizona Originating from near Gila Bend, Arizona I-11 travels northward generally following (or to the east) of AZ route 85 connecting I-8 and I-10 west of the Phoenix metropolitan area. This segment of frreeway can serve as a bypass for traffic around the Phoenix metro area via I-11 south to I-8 east to tucson. From there the corridor travels along new terrain located to the west of the White Tank Mountains until it reaches US-60. (Other proposals show I-11 using the southernmost segment of the new Loop 303 between US-60 and I-10 instead.) Since ultimate interstate 11 runs north and south west of the greater Phoenix metro area it is able to avoid costly right of way encroachments that would prevent construction. The route then turns northwest following US-60 to Wickenburg and then following US-93 north until it reaches I-40. From there I-11 continues north along US-93 until it crosses into Nevada at the new Hoover Dam Bridge. See map - 4 Corners Region
Nevada Once into Nevada I-11 would follow US-93 and then I-515 northward to I-15 in Las Vegas. North of Las Vegas the route would generally follow US-95 northward throughout the state north through Fallon then connecting to I-80. I-11 would be cosigned with I-80 from Fallon Junction to Winnemucca before continuing north along US-95 into Oregon. See map - Calneva Region
Oregon at McDermott NV I-11 would cross into Oregon from there it would likely follow US-95 north to Burns Junction then west to Jordan Valley. The route instead could a more direct easterly alternate routing from McDermitt over new terrain toward Jordan Valley and Idaho. From Jordan Valley the highway would travel possibly on either side of the state line until it turns northeastward along US-95 into Idaho a short distance north of Jordan Valley See map - Pacific NW Region
Idaho Once in Idaho the route could either follow US-95 along the west side of the treasure valley or could connect to the future planned treasure valley bypass north to Caldwell and I-84, Then Continuing north on US-95 through Payette then north to Lewiston. An alternate route could also travel north along ID highway 16 through Emmett and along new terrain through the Indian Valley where it would rejoin US-95 south of Council,ID. This alternate has met some opposition as well although it would provide a safer more direct route north from Boise. From Lewiston it continues northwestward to the US-195 where it enters Washington. See map - Northern Rockies Region and See map - Southwest Idaho Region
Washington Once in Washington I-11 would generally follow US 195 through Pullman before terminating in Spokane WA. See map - Pacific NW Region
Purpose and Need This corridor solves several transportation issues. First it provides a connection from Phoenix to Las Vegas, Connects Las Vegas to Reno, and connects Sacramento and Reno to Boise, Lewiston, Spokane, and the Idaho Panhandle. Additionally there is a high volume of truck and commercial traffic along several sections of this corridor necessitates the corridor.
Alternate Routings Near Hawthorne Nevada instead of turning north directly to Fallon NV the route could continue northeast on a new alignment generally following the state border with California or the ultimate interstate planned extension of I-580 and then follow US-395 to Reno where it would be Cosigned with I-80 back to its original alignment towards Winnemucca. The I-11 section heading Due north through Fallon to I-80 would then become the I-211 bypass.
I-11 could also take a more direct northerly path through the heart of Nevada traveling around various military ranges and then directly to Winnemucca where it continues north to Oregon and Idaho. This routing would reduce mileage however it travels through largely uninhabited lands and is not a practical routing to connect Phoenix or Las Vegas to Reno.
North of Winnemucca I-11 could take amore direct northeasterly route directly to Boise, however consruction costs of such a new terrain highway would be likely astronomical and negate any savings of the more direct route. Additionally upgrading the existing route would significantly improve travel times.