permitted by law: 1. The construction and maintenance of noncommercial catwalks, piers, boathouses, boat shelters , fences, duckblinds, wildlife management shelters, footbridges, observation decks and shelters and other similar structures, provided that such structures are so constructed
Read it in the chapter →How this ordinance defines it
The operative definition is the local one. Codes routinely subdivide a category into tiers — “day care 2, family”, “group home 2” — and attach different permissions to each, so only Fredericksburg’s own text settles what this covers.