Our research is focused on establishing a database of cultural and historical information for the Pacific Highway South corridor, part of U.S. Route 99, between Tukwila to Federal Way. We are undertaking this research effort in partnership with 4Culture, a local organization that acts as the cultural services agency for King County providing programs, financial support and services in the arts, public art, heritage and historic preservation. The ultimate purpose of our work is to provide 4Culture with a product its artists can use as reference material for upcoming projects in the area. Initially, our database will inform the creation of audio work that will be part of the RapidRide Soundscape Project, 4Culture’s most recent project for King County Metro Transit. The RapidRide Soundscape Project is intended as an audio sightseeing tour of the RapidRide A Line bus route, which will begin running along this section of Pacific Highway South in late 2010. Our database will discuss specific aspects of this area within two topics: transportation and environment. Transportation has a rich history along this section of Highway 99, from its beginnings as a logging road to the more modern modes of travel, such as light rail, now appearing along it. The environment, and its importance to the native people of the land, will be discussed as well as issues of environmental sustainability, with an emphasis on the Duwamish watershed reclamation project and salmon habitat restoration. By utilizing primary sources, such as oral histories, news articles, statistical data and musical performances the Pacific Highway South corridor’s transportation history, cultural diversity and efforts concerning environmental sustainability will be shown.