Every bridge clearance number in Cape Coral is charted at mean high water — the conservative, worst-case reading. Look up the charted clearance for the specific bridge on your route from the City of Cape Coral's official GIS dataset, then run it here against your boat's actual height.

What this estimates: simple subtraction — your boat's height plus your chosen safety margin, compared against the charted bridge clearance you enter. Assumptions: the charted clearance you provide is accurate and current, your boat's height figure includes its tallest fixed point (antenna, outriggers, radar arch), and conditions are normal (no storm surge, king tide, or unusual runoff). This is an educational estimate, not a safety certification — independently verify clearance on the water before running any unfamiliar bridge, especially near your calculated margin.

Run the Numbers

From the official City of Cape Coral bridge dataset, at mean high water. Enter the bridge's charted clearance in feet.
Highest fixed point above the waterline — tower, antenna, radar arch. Enter your boat's total height in feet.
Padding beyond your boat's height that you want between you and the underside of the bridge.

Charted clearance—
Your boat height—
Room at charted height—
Your requested margin—

Educational estimate based on the numbers you entered — not a safety certification. Verify on the water before running an unfamiliar bridge, and contact Christina to evaluate a specific boat or property.

Why This Stays a Calculator, Not a Prediction

This tool only does the subtraction — boat height plus your margin, compared to the number you looked up. It doesn't estimate today's tide or guess a bridge's clearance for you, because a wrong guess on a bridge is a lot more expensive than a slow afternoon looking one up. That's also why the field asks you to bring the charted number yourself, sourced straight from the city.

About the Local Tide Range

Cape Coral's canals sit on the Caloosahatchee, which the nearest NOAA tide station (Fort Myers, Station 8725520) shows as a fairly modest tidal swing for this stretch of coast — roughly 0.9 feet between mean low and mean higher-high water, with mean high water sitting only about 1.1 feet above the station's chart datum. In practice, that means the charted (mean-high-water) clearance is usually close to your worst case in ordinary conditions — you'll often see a little more room at lower tide, not less. What the chart datum doesn't cover: storm surge, king tides, or heavy rain runoff, all of which can push water higher and clearance lower than the charted number. For a specific date and time, check the live NOAA tide predictions for Fort Myers →

Sources: City of Cape Coral — Bridges GIS Dataset · NOAA Tides & Currents — Station 8725520 Datums

Read the full Bridge Heights & Sailboat Access guide → · Check if your boat fits this canal system →

Still not sure?

Send Christina the bridge and your boat's numbers — she'll help you read the route before you make an offer, not after.

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