The following are my ideas for future improvements in the US-97, 395, & 95 corridors which are discussed in the posts above.
Here is my take:
Any freeway in Central Oregon probably makes sense if it starts out from Portland and follows US-26 to Madras, OR where it would then follow the US-97 corridor through Bend and Klamath Falls and "terminated" (in California, of course

) at I-5 at Weed in the Shasta area. The current US-97 section through Bend is pretty much a newer freeway, unusual in a state known to abhor freeways in general. Attitudes can and do change. This freeway should be part of the Interstate system because of its length. My proposal is "I-7."
In Washington, US-97 could be upgraded to a "Super 2" over Satus Pass and through the Yakama Indian Nation (Reservation). I really can't see this portion becoming a full freeway here. US-97 joins I-82 at Toppenish, WA (after a short detour on WA-22). From here, the two are co-signed through Yakima and over the three spectacular ridges to the Ellensburg area. My idea would be to continue the I-82 freeway north over Colockum Pass/Mission Ridge to Wenatchee which shortens the current US-97 roadway to Wenatchee over Swauk Summit (Blewett Pass). I-82 is more of a N/S highway than an E/W highway and should be redesignated as "I-9." I-9 could end at Wenatchee but the US-97 corridor continues up the Columbia and Okanogan Rivers to very popular recreational areas of British Columbia at Penticton and Kelowna which are connected by freeways and a toll road (BC-5) to Vancouver.
US-395 is pretty much a freeway from I-90 at Ritzville to the Tri-Cities area and I-182 and I-82. This portion of US-395 should be part of the Interstate system since it provides a diagonal corridor from I-90 and Spokane to I-84 and Portland. My proposal would be "I-490."
US-95 south from the Boise area could become "I-11." This corridor joins I-80 at Winnemucca, NV and continues with I-80 to the Reno area. I-11 would continue south to Las Vegas providing a direct freeway connection between Nevada's two largest cities.
Comments?