The run of US 97 in Oregon (running from south to north) starts at the border between Oregon and California, south of the city of Klamath Falls. The highway starts out as a two-lane road, running through the arid Klamath River basin. Approaching the city of Klamath Falls, 97 becomes a freeway just south of the junction with OR 140 and OR 66. The freeway then runs along the western edge of the downtown region, ending at an interchange with Oregon Route 39 near the Oregon Institute of Technology. Within Klamath Falls is a business route, which runs through downtown via Main Street/Klamath Avenue and Esplanade Avenue, then which turns back to the US 97 mainline via the East Side Bypass (this latter segment co-signed with OR 39). This section of Highway 97 has been identified as an important alternative to I-5 for traffic in the Medford area in the event of a major earthquake in the region. Various proposals have also identified US 97 as a potential freeway corridor.