ST. PETERSBURG — The City Council on Monday approved a plan to spend $1.3 million for a renovation to Tropicana Field. The 7-0 vote paves the way for a project that features the creation of open-air concessions where a restaurant now exists; and walkways behind the outfield seating area. Tampa Bay Rays officials have characterized the project as a major upgrade for fans. Team officials had asked the city for the money, which comes from ticket sales and naming rights, because the city controls the account, which currently has about $2.1 million in it. Other maintenance projects, including bathroom overhauls, better lighting and improvements required under the Americans with Disabilities Act, also will be part of the project. The work is expected to be complete before next year's baseball season.