Things are going to become a bit cooler for those who use the picnic tables at Woodward Park.The Manteca City Council on Tuesday is expected to call for bids to build a 60- by 60-foot shade structure over the picnic area at the community park south of the 120 Bypass. When the $200,000 project is completed, all three community parks in Manteca will have shaded picnic structures. The others are at Northgate Park and Lincoln Park.Bids will be opened July 3.