At W. 61st Street S., the road crosses into Tulsa County. About one mile (1.6 km) north of the county line, SH-97 enters Prattville, a neighborhood of Sand Springs. At the north end of the town, the highway intersects SH-51 and begins a concurrency with it. The two routes cross the Arkansas River into the main part of Sand Springs together. SH-97 then has an interchange with the Sand Springs Expressway, a freeway which carries US-64 and US-412; SH-51 merges onto the eastbound freeway, bound for downtown Tulsa.