Washington State has had no consistent process for designating highways as Scenic Byways. To fill the gap, a team from the Washington State Department of Transportation developed a methodology to collect and analyze data based on the Federal Highway Administration's Visual Impact Assessment of Highway Projects. These data have been used by the department and the legislature to designate new highway corridors as Scenic Byways and can be used to de-designate sections of highway from the Byway system that are no longer "scenic" By Sandra L. Salisbury, L.A., Paula Connelley, Judy Lorenzo, Washington State Department of Transportation.

Washington State has had no consistent process for designating highways as Scenic Byways. To fill the gap, a team from the Washington State Department of Transportation developed a methodology to collect and analyze data based on the Federal Highway Administration's Visual Impact Assessment of Highway Projects. These data have been used by the department and the legislature to designate new highway corridors as Scenic Byways and can be used to de-designate sections of highway from the Byway system that are no longer "scenic."

Further Reading:

A Methodology for Scenic Byway Visual Analysis