The SR 31 Extension Project Development and Environment (PD&E) Study is evaluating the social, cultural, natural, and physical effects of constructing a new alignment extending SR 31 from its current terminus at SR 70 further north to connect to US 17. The purpose of this project is to analyze transportation improvements that will improve safety by reducing the interaction of vehicular through truck traffic with bicyclists and pedestrians in Arcadia's downtown, enhance mobility by supporting the movement of people and goods through central DeSoto County, improve traffic operations in Arcadia by reducing regional through traffic in the downtown area, and support the economic development goals for northeast Arcadia identified in local future land use plans. There are five build alternatives currently under consideration: B, F, J, BJ, and FJ. The no-build alternative, which does not extend SR 31, is also under consideration and will continue to be an option throughout the PD&E Study. These five alternatives are based on corridors presented as part of an Alternatives Corridor Evaluation (ACE) Feasibility Study completed in 2019.

FDOT held a public workshop, with a live in-person event on Wednesday, November 8, 2023, and a live online event on Thursday, November 9, 2023. Materials were also available for review and comment below from Wednesday, November 1, 2023. And comments for the workshop were accepted in multiple ways through Monday, November 20, 2023. To view what was presented at the workshop, see the Project Documents section below.