Chicago's Divvy bicycle-sharing program plans to add 175 stations and 1,750 bikes in the spring, the city will announce Thursday, a behind-schedule expansion that will extend the program as far north as Touhy Avenue and as far south as 75th Street.Chicago's Divvy bicycle-sharing program plans to add 175 stations and 1,750 bikes in the spring, the city will announce Thursday, a behind-schedule expansion that will extend the program as far north as Touhy Avenue and as far south as 75th Street.