FDOT presents Monterey Road/FEC grade‑separation alternatives; board leans toward Alternative 3

Martin County MPO Policy Board · February 23, 2026

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Summary

FDOT presented three alternatives for the State Road 714 (Monterey Road) grade‑separation at the FEC crossing, including schedule, traffic forecasts and environmental constraints; discussion focused on impacts to parcels, airport RPZ constraints and railroad coordination, and several board members favored Alternative 3 as least damaging to residences.

FDOT project staff and consultants presented the PD&E study for the State Road 714/Monterey Road crossing of the Florida East Coast railroad. The presentation reviewed data collection and public outreach, alternatives analysis, environmental and aviation constraints (runway protection zones at Witham Airfield), and a schedule showing right‑of‑way acquisitions starting about 2028 and construction in 2030 under the current five‑year work program.

The study considered 10 initial concepts and carried forward three alternatives plus the no‑build option. Alternatives 1 and 2 generally elevate the existing 714 alignment over the FEC railroad; Alternative 3 sites an overpass south of the current intersection via a Monterey extension, with different parcel impacts and potential benefits in splitting traffic and improving emergency response connectivity. FDOT staff noted level‑of‑service forecasts to 2050 showing several links moving toward failing conditions under the no‑build scenario and that alternatives can reduce traffic at the critical Monterey/US‑1 link by redistributing flows.

Board discussion centered on comparative parcel impacts, potential property relocations, staging and railroad compensation (FEC may require closures or compensation for new crossings), and the need for visualizations to help the public understand what elevated structures or depressed alternatives would look like. Several commissioners said Alternative 3 appears to offer the best tradeoff between traffic benefit and minimizing residential impacts; FDOT agreed to provide more refined cost/comparison data and visuals ahead of upcoming public workshops and a March 9 city presentation.

FDOT emphasized that environmental analyses, railroad coordination and FAA constraints (runway protection zones) are critical inputs and that any new crossing may require negotiation with FEC about closures elsewhere on the corridor.