Design a buildable community sports hall beneath an elevated urban viaduct in a dense neighborhood. Fit a lightweight laminated-timber and translucent-polycarbonate pavilion between existing concrete bridge piers, with multipurpose courts, a climbing wall, changing rooms, rain gardens, shaded community seating, and durable rubber paving. Present a landscape 4:3 street-level wide three-quarter view, using the viaduct as an upper frame while clearly showing the entrance and active civic plaza. Bright overcast daylight should create soft reflected illumination beneath the bridge and reveal board-formed concrete, timber beams, perforated metal, wet-weather planting, and practical drainage. Small diverse adult figures may provide scale. Physically plausible adaptive reuse only; no readable signs, logos, watermark, impossible floating roof, distorted structure, or leaning verticals.