On the St. Lucie River, a waterfront listing's real ocean access depends on a single structure: the Florida East Coast Railway bascule bridge at mile 7.41 of the Okeechobee Waterway, beside the Roosevelt Bridge near downtown Stuart. If your dock is inland of it, a federal schedule decides when you can reach the inlet. A replacement bridge was funded in August 2026, but no construction date has been announced. So anyone buying upstream is buying the current rule, along with a stake in a future bridge whose timing nobody has set.
The same bridge is also the main obstacle to the Brightline station proposed for downtown Stuart.
The Rule Your Dock Actually Runs On
Two listings can show the same depth at the dock and the same distance to the inlet and still give very different access. The Okeechobee Waterway counts its miles from Mile 0 at the St. Lucie Inlet, running inland up the St. Lucie River's South Fork. Any boat kept inland of mile 7.4 has to pass the railroad crossing to reach the Atlantic.
The Coast Guard's rule for this bridge took effect November 17, 2025, and the version current as of October 1, 2026, works like this:
- Default position: The bridge stays open to boats except for trains, inspections and Coast Guard-authorized maintenance.
- Daytime cap, 6 a.m. to 8 p.m.: The bridge can be closed no more than 50 minutes in a row in any hour, and no more than 7 hours total over the 14-hour daytime window.
- Guaranteed opening: The bridge opens for a fixed 10 minutes at the top of each daytime hour. If a train is in the track circuit, that opening can be pushed back up to five minutes, and then the bridge must open right away.
- Overnight, 8:01 p.m. to 5:59 a.m.: The bridge stays open except for trains or authorized work, with no single closure longer than 60 minutes.
- Contact: A bridge tender works 6 a.m. to 8 p.m. and monitors VHF channels 9 and 16. Operating information is available around the clock at (305) 889-5576, and the owner has to maintain a mobile app with opening times.
The 7-hour cap allows the bridge to be down for half the daytime window. The rule caps closures but doesn't promise a typical wait, and no reviewed source publishes measured wait times. When it adopted the rule, the Coast Guard said a train in the safety block can keep the span down even when no train is visible from the water. It also acknowledged minor discrepancies between the bridge app and actual conditions.
What drives those closures is a steady flow of trains. WPTV reported in February 2026 that the bridge carries more than 30 trains a day. The Sun Sentinel reported in August 2026 that Brightline's schedule includes 16 daily round trips with hourly departures in each direction, plus regular Florida East Coast Railway freight trains.
Six and a Half Feet Decides Who Waits
When the span is down, its clearance to mean high water is about 6.5 feet, according to the August 2026 project announcement. Waterway Guide lists 7 feet without naming a reference point. The horizontal opening is 50 feet. In practice, almost any boat with a T-top, hardtop or flybridge waits for the top of the hour. "When the bridge is in the down position, very few vessels are able to pass beneath the span," the Sun Sentinel reported.
The rest of the route puts the railroad crossing in context. The Evans Crary Bridge on SR A1A at mile 3.4 and the Roosevelt Bridge on US 1 at mile 7.3 are both fixed spans with 65 feet of clearance. The Old Roosevelt Bridge on Dixie Highway is a bascule with 14 feet closed and opens on request. Of the bridges a powerboat passes between downtown and the inlet, only the railroad crossing opens on a train-driven timetable.
Where Specific Docks Sit
Sunset Bay Marina, a few steps from downtown Stuart, is at mile 8.0, inland of the railroad crossing. Meridian Marina sits directly on the South Fork in Palm City, which also puts its boats on the inland side. Farther up the South Fork, the Palm City Bridge on SR 714 at mile 9.5 is fixed at 54 feet vertical and 90 feet horizontal. A sailboat owner looking above that point has two clearances to check: the mast against 54 feet and the timing against the railroad schedule.
Marine businesses have raised this before. In June 2023, under an earlier temporary schedule that has since been replaced, TCPalm reported that thousands of recreational boaters from Palm City and Port St. Lucie used the crossing weekly and that 15 South Fork marine businesses had sued over that schedule. Before adopting the current rule, the Coast Guard recorded a commercial property owner's claim that closures had hurt marine-construction tenants and boat storage. It concluded that commenters had not shown evidence of harm under the test schedule.
The Replacement Is Funded and Undated
On August 18, 2026, U.S. Transportation Secretary Sean P. Duffy announced a $78.9 million grant to the City of Stuart to replace the bridge. It adds to a $130 million federal commitment from 2023. The total project cost is $262 million. Together, the two grants come to about $209 million. A joint release from Brightline and local officials said the new grant "makes the project possible," but it included no construction timetable. In February, WPTV reported that at a January 26 commission meeting, city officials acknowledged "the project couldn't move forward until all the financing was in place."
Here is what the published design would change:
| Measure | Current bridge | Planned replacement |
|---|---|---|
| Vertical clearance, span down | About 6.5 ft | About 17.75 ft |
| Horizontal clearance | 50 ft | About 90 ft |
| Tracks | Single | Double |
| Share of vessels passing with span down | Very few | More than 90% |
If the new bridge clears more than 90% of vessels with the span down, the top-of-the-hour schedule would stop governing most boats. That would change what an upstream dock offers. Michael Kennedy, Martin County's commissioner on the Florida Inland Navigation District, said the new bridge would "substantially reduce impacts on recreational boaters, commercial marine traffic, downtown motorists, marine industries and cruising vessels." U.S. Rep. Brian Mast called the current bridge "a daily headache for boaters" and said he would work to "make sure we stay on schedule."
There is also a risk on the other side. Dan Romence, president of the Marine Industries Association of the Treasure Coast, told WPTV in February that if the old bridge is found unsafe, "they have to shut the bridge, which would completely seal off marine access for everybody."
The Same Span Is Holding Up the Train Station
Martin County has proposed a Brightline station at 500 SE Flagler Ave., on county-owned land across from the Martin County Courthouse. The plan calls for a station of roughly 10,200 square feet. The county's February 2026 federal application pairs it with a platform of about 660 feet. In a letter dated April 27, 2026, Florida East Coast Railway said it had denied the station request because "the FEC system would require the bridge to be down while the train stops at the station," which would violate Coast Guard rules. Brightline said it had reviewed the objections, found they "lack merit," and that the station "will remain fully compliant with Coast Guard regulations."
The funding has also slipped. Martin County was not among the August 2026 recipients of federal intercity passenger rail grants. The $79 million in that round went to the bridge, not the station. CBS12 reported on August 27 that the county was waiting for another grant cycle and acknowledged the station could be delayed further or shelved without federal support. TCPalm reported that under the county's agreement with Brightline, either side can withdraw or renegotiate if grant funding is not secured by June 30, 2027.
Local politics have shifted at the same time. In June, Commissioner Ed Ciampi proposed discussing a move to the county fairgrounds, citing concerns about parking and the bridge. TCPalm reported on September 14 that station supporters won a majority on the Stuart City Commission in the August 18 primary. None of the reporting reviewed says whether the planned 17.75-foot clearance would resolve the railway's objection. For a buyer weighing a home near Flagler Avenue, the station remains a proposal with an unresolved approval and an unfunded budget.
Underwriting a Dock Inland of Mile 7.4
The questions that matter for an upstream property are specific, and each can be checked before you sign a contract:
- Locate the dock by waterway mile. Confirm it is inland of the railroad crossing at mile 7.41, and, on the South Fork, whether it is above the 54-foot Palm City Bridge at mile 9.5.
- Measure your boat's air draft against both numbers. Compare it to roughly 6.5 feet today and 17.75 feet for the planned span. A boat that clears 17.75 feet would gain the most from the replacement.
- Run the schedule yourself. Use the owner's required mobile app on a weekday morning and a weekend afternoon, and confirm openings with the tender on VHF 9 or 16. The Coast Guard has noted that the app does not always match conditions on the water.
- Price the property on today's rule. The replacement has federal money but no timetable, so a value case built on a lowered-span bridge is a bet on a date nobody has announced.
- Treat the station separately. A downtown address near 500 SE Flagler Ave. should make sense with or without a train platform until the railway approval and federal funding are resolved.
At Amax Real Estate, we evaluate St. Lucie River waterfront the way an investor reviews any asset with a schedule attached. We check the dock's waterway mile against the bridge clearances, the operating rule and the replacement funding before an offer goes in. If you are comparing docks on either side of Stuart's railroad bridge, schedule a consultation and we will go through those numbers with you.
This article is general information, not legal, tax or financial advice. Consult a qualified professional about your situation.
