Plan from an August 1958 technical report proposing possible routes for the Interstate Freeway (I-5). The plan is a detailed birds-eye view of the proposed Minnesota route, plan B for the I-5 freeway, N Portland Boulevard. (now N Rosa Parks Way) south to N Fremont St. Three routes were suggested in the report: one along N Delaware Ave., and two options along N Minnesota Ave. The freeway was eventually built using this plan: Minnesota Route, plan B. The routes of the two Minnesota plans are identical, but each of them manages interchanges and overpasses differently.