US 17 and US 92 join at the south end of Lake Alfred in Polk County and thus the new hidden state road is SR 600 which carries US 92 west into Auburndale, Lakeland, Plant City, Tampa, and St. Petersburg. SR 555 soon splits off as CR 555 to the north along the old road through Lake Alfred, known as South Buena Vista Road while US 17/US 92 runs one block east on Lake Shore Way.
At the southern end of Lake Alfred in Polk County, US 17 and US 92 converge. SR 600 then takes over to carry US 92 west through Auburndale, Lakeland, Plant City, Tampa, and St. Petersburg. Meanwhile, SR 555 splits off as CR 555 heading north along South Buena Vista Road while US 17/US 92 continues one block east on Lake Shore Way.