On Key Biscayne, the Only Road In Is Part of What You're Buying

A Key Biscayne buyer who closes in May pays the same $72 per vehicle for a Rickenbacker Causeway resident plan as one who closed in October. Every plan runs from October 1 to September 30, and Miami-Dade County doesn't pro-rate the price. It's a small cost. It also points to a larger fact about the island. On Key Biscayne, the road decides who pays for access and how often, and that pricing quietly shapes the market at the other end of it.

The county calls the Rickenbacker the only way on and off Key Biscayne. The same road also serves Virginia Key, Crandon Park and Bill Baggs Cape Florida State Park. Owners pay a flat yearly fee to use it. Most visitors pay each time. The bridge carrying all of that traffic over Bear Cut was built in 1944, and the county won't finish deciding what to do with it before March 2027.

A Toll Built for Residents, Paid by Their Visitors

The current rates took effect on October 1, 2025. A two-axle vehicle pays $3.25 per entry with SunPass, or $6.50 with Toll-by-Plate plus a $2.50 monthly invoice fee. The resident annual plan costs $72 per vehicle and requires an active SunPass. Workers and students who qualify can buy a $120 commuter or school plan for unlimited passage.

The resident plan used to cost $24. WLRN reported in September 2025 that the county budget tripled it to $72 and raised the regular toll by $1. The Village of Key Biscayne's July 8, 2026 notice lists the 2027 resident plan at the same $72. Renewals opened July 7.

Here is how the costs fall on different people crossing the toll plaza in a given year:

• An owner with the resident plan pays $72 per car, however many times they cross.
• A regular household employee or student who qualifies pays $120 a year for unlimited trips.
• A weekend guest, a one-time contractor or a beach visitor with SunPass pays $3.25 every time they enter.
• The same visitor without SunPass pays $6.50 per entry, plus the invoice fee.

The tripled resident fee drew the headlines. But the per-trip toll does more to sort traffic. It falls on the occasional crossers, the people who don't own on the island and don't qualify for a plan. A per-trip charge doesn't stop anyone from crossing. It does put a small price on each visit, and owners mostly don't pay it.

That matters because demand to get onto the island has been rising. WLRN reported in March 2025 that Village Manager Steve Williamson said Crandon Park traffic had risen 50% in two years, with similar increases at Bill Baggs and Hobie Island. At that Village Council meeting, residents held "No Hostages" and "Enough is Enough" signs and asked for a residents' lane and congestion pricing. The congestion pricing they asked for already exists in part, in the gap between $72 a year and $3.25 a trip.

The Bridge Everyone Pays For Is the Oldest Part of the Road

The toll revenue does real work. Bear Cut Bridge was built in 1944, and county materials classify it as functionally obsolete. In June 2024 it gave the bridge a sufficiency rating of 37.3 out of 100. Repairs in 2023 to spalled concrete, piles, bearings, beams and deck joints kept the load restrictions recommended in a 2022 load-rating report from taking effect. The county's causeways page currently posts a 31-ton weight limit. A whole-home renovation on the island depends on heavy deliveries, so that number matters to anyone planning one.

The long-term question is whether to rehabilitate Bear Cut or replace it. A Project Development and Environment study, or PD&E, is weighing both options. It began in October 2024, is expected to finish in March 2027, and design comes after that. On October 6, 2026, the County Commission adopted Resolution R-814-26, sponsored by Commissioner Raquel Regalado. It approves an agreement with the Florida Department of Transportation for that study. FDOT provides oversight, and Rickenbacker toll revenue pays for the study.

A separate, shorter project covers the two bridges closer to the mainland. The Key Biscayne Independent reported in March 2026 on a roughly $4.1 million toll-funded rehabilitation of the West Bridges and the William Powell Bridge. P & P Contracting has the work, which was scheduled to begin in spring 2026, and the paper estimated completion in spring 2028. The Village's March 18, 2026 notice describes the work as lasting about 36 months, which would push the end into 2029. According to Islander News, the announced lane closures run weeknights from roughly 9 p.m. to 4 a.m., keep at least one lane open in each direction, and skip weekends and special-event days. The Key Biscayne Independent reported that Williamson asked county staff to keep the Village updated and to keep lane closures from coinciding with special events on the islands. At the same meeting, Mayor Joe Rasco said more coordination among the Village, the county and the city was still needed.

Two Ideas for the Causeway, Neither of Them Decided

Any buyer who has spent time near Key Biscayne has probably heard of Plan Z. As the Miami Herald reported, the group behind it proposed taking over the county's toll operation for 99 years in exchange for a privately funded upgrade expected to cost about $500 million. The County Commission adopted a resolution ending it on January 19, 2022. Any toll projections tied to Plan Z are history.

The concept the Village is funding now is called The Shoreline. It's a split-level viaduct over Virginia Key that would run from near the Rusty Pelican Marina entrance to the start of Bear Cut Bridge. Through traffic and fast-moving cycling groups would ride the upper level. The road underneath would become four lanes at 30 mph, with access points to Virginia Key, Miami Marine Stadium and MAST Academy. The petrified groves near Crandon Park are a no-touch zone, and the William Powell Bridge would stay as it is. As Islander News reported, the design is meant to serve an estimated 28,000 daily commuters.

The team includes Juan Mullerat of Plusurbia on design, Javier Manso of HDR on engineering, Eulois Cleckley of Friends of the Underline, and The Rebel Group on funding and revenue. Regalado described the Village-funded work to Islander News as "really a stress test of this idea of The Shoreline." The Village Council approved up to $950,000 for a seven-step feasibility process. That money pays for study, not construction. Cleckley told Islander News that a total cost can't be determined until at least five of the seven tasks are done. Two steps were complete by the April 2026 workshop, and Plusurbia's May 2026 update described the study as still underway.

The two ideas depend on each other. The viaduct could begin only after Bear Cut is replaced, if the county decides to replace it. Islander News reported that Williamson said the Bear Cut study should line up with the Shoreline concept. Someone buying this fall will own through the 2027 study result, the design phase after it, and whatever comes after that.

The Market That Sits Behind the Bottleneck

Islander News reported on September 25, 2026 that Key Biscayne homes sold in an average of 75 days over the three months ending in August 2026, down from 100 days a year earlier. Florida homes averaged 78.1 days listed so far in 2026, which ranks third-slowest in the country. The same article cited a mid-year report putting Key Biscayne's Q2 2026 median sale price at $3.7 million, up 4% from Q2 2025. Condo prices rose 6% below $2 million and 19% above it over the same period.

Those figures cover months when the higher tolls were already in effect. One planned condo would replace an existing resort. WLRN reported in April 2025 that Terra Group and Fortune International Group paid $205 million for the former Silver Sands Beach Resort at 301 Ocean Drive. They plan a 14-story building with 56 residences, and Terra CEO David Martin said the project would include resiliency and infrastructure improvements.

For buyers looking at existing condos, the building matters as much as the bridge. Islander News reported on October 2, 2026 on a September 25 snapshot of the Miami MLS. Of 101 active Key Biscayne condo listings, 23 declared a special assessment, 65 declared none, and 13 left the field blank. Buildings finished before 1998 showed a higher rate. The listing field records only what the listing agent declared, so a blank answer doesn't mean there's no assessment.

Questions That Belong in a Key Biscayne Offer Conversation

Who crosses the toll plaza for this household? Count the guests, the visiting family, the regular contractors and the household staff. Then check who qualifies for a plan and who will pay $3.25 to $6.50 per entry.

When will the resident plan be bought? Plans run October through September at a flat $72, so the closing month changes what the first plan year is worth.

Does the renovation plan depend on heavy deliveries? The 31-ton posted limit on Bear Cut and the overnight closures on the West and Powell bridges both affect scheduling.

What does the building's assessment history show beyond the listing? The MLS field is where diligence starts, and the association's own records come next.

This post is general information, not legal, tax or financial advice. Please confirm toll plans, assessments and contract terms for your own situation with the right professional.

If you're weighing Key Biscayne against other coastal markets and want to work out what the causeway means for a specific property, from toll plans to renovation logistics to building records, Kirsten Smith is glad to go through it with you. Let's Connect.