The existing Round Island complex in the Mississippi Sound is comprised of the natural Round Island landform and New Round Island, an adjacent beneficial use site originally constructed in 2016. Historic land loss at Round Island, Mississippi’s burgeoning beneficial use program, and state-wide marsh habitat erosion, led to the inception of the New Round Island landmark project – the simultaneous restoration of a disappearing island and large-scale beneficial use site for marsh habitat creation. Since New Round’s original construction, beneficial use projects have placed dredged material at the site, creating and expanding marsh habitat within the created sandy island berm. Ongoing monitoring continues to support adaptive management operations and long-term planning. Background erosion and significant storm activity have prompted restoration and protection activities for both New Round and Round Islands. The proposed Round Island Expansion project plans to restore, expand, and protect the coastal island habitats and the beneficial use site at the Round Island complex. The project will result in over 250 acres of coastal island habitat creation and protection of the beneficial uses site for continued operations and marsh creation. Proposed habitats include beach and dune systems, maritime forests, and interior swale pond. This presentation will provide an overview of the New Round Island beneficial use site for marsh creation and ongoing material placement for habitat creation, discuss monitoring and adaptive management activities, and present the ongoing Round Island Expansion project.