Transportation officials are seeking input on a proposed interstate that would link Phoenix and Las Vegas.
Public meetings are set for Thursday in Henderson, Nev., and Tuesday in Phoenix.
Arizona Gov. Jan Brewer has said that Interstate 11 would foster economic development and tourism. It also could extend north toward Canada and south to the Mexico border.
Transportation officials in Nevada and Arizona are studying the potential for the interstate. They have yet to identify funding for the road.
Officials say Phoenix and Las Vegas remain the largest U.S. cities not linked by an interstate highway corridor.
The combined population of Phoenix, Tucson, Las Vegas and Reno was less than 700,000 when the Federal Aid Highway Act of 1956 was enacted.
It now stands at 8 million.