Sand shoals are relic barrier islands that provide critical productive habitats for numerous coastal species and serve as refugia during hypoxic events, support high concentrations of benthic algal biomass, are important spawning grounds, and are a large sand resource targeted for coastal restoration projects in a region experiencing some of the highest rates coastal land loss in the world. We assessed the impacts of dredging on benthic primary production, benthic infauna, and nekton as integral components of the food webs on Ship Shoal (SS) off the coast of Louisiana via a modified Before-After Control Impact design. We sampled benthic primary producers and infauna via sediment cores and nekton communities via otter trawls and long lines deployed in 3 sites within each of 3 regions of SS (undredged reference regions, a region dredged between 2014-2017, and a region dredged between April 2021 and June 2022) during 3 seasons (spring, summer, fall) of 2021, 2022, 2024, and 2025. Daily benthic PP rates were determined from applying in situ light availability to photosynthesis-irradiance curves generated for each incubated core. Peak potential GPP and light availability decreased with dredge pit depth resulting in daily-integrated benthic GPP being up to an order of magnitude lower in relic, deeper (~12m) pit than reference regions (~8m), with new, shallower (~10m) pit exhibiting intermediate rates. Benthic respiration also increased with dredge depth and age resulting in the sediments becoming increasingly net heterotrophic, which coincides with increased observations of bottom water hypoxia in the deeper, mature dredge pit region. The new pit had reduced benthic invertebrate biomass by 80%, species richness by 30%, increased number of individuals by 300% relative to reference sites and shifted the community towards the older, deeper pit community but remaining intermediate. Seasonality drives changes in community composition and energy use of nekton assemblages with seasonal fluxes influencing local impacts of dredging, which are disparate among resident consumer species and dependent on time since dredging. In summary, the new pit shows intermediate impacts from dredging compared to those seen in the older pit. We will discuss the management implications of whether the observed differences are a result of time since dredging, depth of dredging, or a combination of both.