Hi Jim,
Please, have a look at the link in the next section. This is a link to the page of Florida Sports Foundation. Since your project is of community importance, probably the best place to search for money is from state institutions or non-governmental organizations from your state.
You can also search AidPage to see what federal grants for sports and recreational facilities or activities are available. Soon you will be adding on AidPage new grantors, like non-governmental organizations from all over the U.S., so even if you do not find a federal grant that is good for you, please come back again to see if there is something new that you can apply for.