"I love bridges, I can put you to sleep talking about bridges." That's Sarasota County transportation engineer James Stock, talking about the Blackburn Point Bridge, the one-lane swing span that's the northern lifeline between Casey Key and the mainland in Osprey. Stock isn't being modest. He's spent more than a year in front of residents explaining why a bridge that has carried traffic since December 1926 is now the subject of a formal state study, three public meetings, a petition, and a hearing that's tentatively on the county calendar for this fall.
If you live in Osprey or on Casey Key, you already know the rhythm. You're driving to the Publix on 41, or heading home from a day on the water, and the arm comes down because a sailboat needs to pass. You wait. The bridge tender cranks the span open, the boat drifts through, and the span swings back. It's a scene that hasn't changed much since Calvin Coolidge was president. What has changed is the conversation about whether that scene should keep happening at all, and the answer isn't as close as the fall hearing might make it sound.
What Actually Turns 100 This December
The Blackburn Point Bridge was built by the Champion Bridge Company and opened to traffic in December 1926, which puts its hundredth birthday about three months from now. It's a one-lane steel truss swing bridge on Blackburn Point Road, carrying traffic over the Gulf Intracoastal Waterway, and it's the northernmost of the two spans that connect Casey Key to the mainland. It earned a spot on the National Register of Historic Places in March 2001, and it's also on the Sarasota County Register of Historic Places. According to reporting this spring, it's one of only 11 swing bridges still active anywhere in Florida.
The bridge has needed hands-on attention for decades. A 7.5 horsepower motor was added in the 1970s to help swing the span, since the original mechanism wasn't built for the traffic volume that came later. A barge hit it in 1981. In 1987, crews brought the whole structure to shore for extensive repair work. County officials now describe a bridge whose repairs need their own repairs, citing a 16-foot travel lane with no shoulders, no sidewalks, no bike lanes, aging railings, and corrosion that's outpacing the fixes meant to slow it down.
The Number That Moved
Here's the detail that got lost in most of the coverage. Back in April, when a citizens' group calling itself the Sarasota Alliance for Historical Preservation launched a petition to save the bridge, volunteer Tommye Whittaker cited a consultant figure of about $6 million to repair the existing structure, and guessed the realistic number might land closer to $10 million. By June, county officials speaking at the third public meeting were citing a very different figure: renovating the bridge to keep it as-is, in its current single-lane form, was now estimated at $31 million.
That's not a rounding difference. That's the cost of the "keep it the way it is" option roughly tripling, or more, within a couple of months of public discussion. For residents who assumed preservation was automatically the cheaper path, that assumption doesn't hold up against the county's own numbers. Whatever the county decides this fall, nobody should walk into that decision thinking the historic option is the budget option.
The Options Actually on the Table
Sarasota County's Project Development and Environment Study, the first of two phases before anything gets built, has narrowed the field to a handful of alternatives:
- A no-build option that keeps the current single-lane swing bridge and makes the repairs needed to keep it operating
- A new single-lane swing span bridge
- A new two-lane swing span bridge
- A single-leaf bascule bridge, a different drawbridge design entirely
Several of the replacement concepts also call for a higher bridge clearance, which would cut down on how often the span needs to open for boat traffic in the first place. The current bridge has a 9-foot vertical clearance and a 51-foot horizontal clearance for navigation, numbers the county says fall below Coast Guard recommendations for a waterway this size.
The stakes go beyond convenience. Part-time resident Susan Kalage has described watching emergency vehicles get stuck at the dock while the bridge sat open for boat traffic, a scenario that matters more than it might seem given that Blackburn Point Road is one of just two routes off Casey Key and functions as part of the area's evacuation route.
Why the People Who Love It, Love It
The preservation argument isn't only about nostalgia, though there's plenty of that too. Commercial boat captain Karie Daniel, who's been vocal in the public meetings, has talked about how Osprey has "escaped a lot of the sprawl" that's reshaped so much of the rest of Sarasota County, and the bridge is part of why. It's a working piece of infrastructure that still requires a person to operate it by hand, not a sensor or an app. Blackburn Point Park sits right next to it, with a jogging path along the front, picnic tables under the trees, and a boat launch that puts kayakers and small craft directly into the Intracoastal. The Casey Key Fish House, a seafood grill, is close enough to the bridge that you can watch it swing open while you wait for a table. Anglers fish the span itself, especially at night, when snook move through with the tide.
None of that changes the math on corrosion and clearance. But it explains why a Change.org petition organized by Alliance volunteers had gathered more than 500 signatures toward a goal of 1,000 within weeks of launching last spring, and why three public meetings, held in August 2025, November 2025, and June 2026, have each drawn a crowd willing to sit through a presentation on truss maintenance to have their say.
What the Fall Hearing Will and Won't Decide
Sarasota County has said a formal public hearing before the County Commission is tentatively scheduled for fall 2026, following completion of the PD&E study. That hearing is the moment the county will settle on a preferred alternative among the options above. It sounds like the finish line. It isn't.
According to the Casey Key Association, which has been tracking the project closely, construction funding for the bridge has not yet been identified anywhere in the county's current Capital Improvement Program. Money has been allocated for planning and design work, the phase happening now, but not for actually building whatever gets chosen. That means the fall hearing will tell Osprey and Casey Key residents which direction the county wants to go. It will not tell them when, or with what money, that direction becomes concrete and steel.
If you live along Blackburn Point Road, the practical takeaway is patience without complacency. The bridge you cross today, at 16 feet wide with no shoulder, is very likely the bridge you'll be crossing for a while yet, regardless of what the commission decides this fall. If you have an opinion on whether Osprey keeps its century-old swing span or gets something wider and less charming in its place, the window to weigh in is open now, through the project's public comment channels, not after a decision has already been made and funded years down the road.
Angela Adams has spent her career paying attention to the details that make Sarasota County neighborhoods work, from the schools and shops to the bridges people cross every day without thinking twice. If you're curious about what a story like this means for a specific stretch of Casey Key or Osprey, or you just want a local perspective before your next move in the area, reach out to Angela Adams. She's happy to talk through the neighborhood, bridge included.
