Seven Mile Bridge Cameras: US-1 Florida Keys Crossing
Monitor the Seven Mile Bridge — the iconic 6.79-mile US-1 crossing connecting Knight's Key (Middle Keys) to Little Duck Key (Lower Keys) across the Gulf of Mexico. Part of the 113-mile Overseas Highway driving route to Key West — track traffic, hurricane evacuation windows, and conditions during Keys tropical weather events on TrafficVision.Live.
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Little Duck Key (Lower Keys) | Modern Bridge Opened: 1982 (built 1978-1982) | Original Bridge: Built 1905-1912 as part of Florida East Coast Railway Overseas Railroad | Construction Distinction: World's longest continuous precast post-tensioned concrete segmental bridge at completion | Max Height: 65 feet (to allow boat passage) | Part of Overseas Highway: 113 miles of US-1 from Florida City to Key West | Hurricane Evacuation: Primary Keys evacuation route | Camera Sources: FDOT, 511 FloridaThe Seven Mile Bridge is one of the most iconic road features in America — a 6.79-mile segment of US Route 1 (the Overseas Highway) connecting the Middle Keys to the Lower Keys across open Gulf of Mexico water. Per Britannica's Seven Mile Bridge entry, the bridge is part of the 113-mile Overseas Highway, itself a portion of the 2,369-mile-long US Route 1. The modern bridge was built 1978-1982 and was the world's longest continuous precast post-tensioned concrete segmental bridge at completion per Wikipedia. It replaced the original 1905-1912 railroad bridge built by Henry Flagler as part of the Florida East Coast Railway's Overseas Railroad — converted to a highway after the 1935 Labor Day Hurricane destroyed the tracks. The modern bridge has a maximum height of 65 feet to allow boat passage and carries a freshwater water main supplying the Keys from the mainland.
Seven Mile Bridge Coverage
Knight's Key (East End)
Marathon / Middle Keys entry
Eastern bridge entrance at Knight's Key, connecting to the Middle Keys and Marathon.
Little Duck Key (West End)
Lower Keys entry
Western bridge entrance at Little Duck Key, leading to Big Pine Key, Summerland Key, Ramrod Key, and onward to Key West.
Historic 1912 Bridge (Adjacent)
Pedestrian + fishing
Sections of the original 1912 railroad bridge remain adjacent to the modern bridge as a pedestrian/fishing/cycling route.
Overseas Highway Context
US-1 mile markers
US-1 mile markers through the Keys count down from ~MM110 (Florida City) to MM0 (Key West). Seven Mile Bridge is between approximately MM47 and MM40.
Hurricane Evacuation Traffic
Summer-fall tropical seasons
Primary Keys hurricane evacuation route — northbound backup through bridge during mandatory evacuations.
Pigeon Key
Historic small island
Pigeon Key — a small historic island under the original bridge — was a construction camp during the 1908 railroad build.
When to Check Seven Mile Bridge Cameras
Peak Seven Mile Bridge Traffic Windows
- Winter season (Dec-Apr) — Peak snowbird + tourism volume throughout Keys
- Spring Break (Mar-Apr) — Heavy college tourist traffic
- Summer weekends — Fishing + boating tourism peaks
- Lobster Mini-Season (late July) — Massive regional weekend diving/lobstering peak
- Hurricane evacuation warnings — Mandatory evacuations create severe northbound backups — see Atlantic hurricane season guide
- Fantasy Fest (Key West, Oct) — Peak Key West tourism weekend
- Christmas / NYE — Peak holiday travel
- Tropical storm conditions — Bridge itself doesn't close routinely but Overseas Highway can be impacted
View Live Seven Mile Bridge Cameras
Check Seven Mile Bridge conditions and Overseas Highway traffic before committing to the Keys drive — free, 24/7, no sign-up.
VIEW SEVEN MILE BRIDGE CAMERAS →Keys Hurricane Evacuation Reality
There is only one road to Key West — US-1 / Overseas Highway. When the Keys evacuate for a hurricane, every vehicle must cross every bridge including Seven Mile Bridge. Evacuations are typically ordered in phases — tourists first (at 72-96 hours before landfall), then residents. Delays of 4-8+ hours on a normally 3.5-hour Miami-to-Key-West drive are common during mandatory evacuations. Monitor FDOT and 511 Florida cameras during hurricane warnings. See the Atlantic hurricane season guide.
Pro Tip: Seven Mile Bridge Filming + Iconic Drive
The Seven Mile Bridge has been featured in countless films and shows — most famously the chase scene in True Lies (1994), plus appearances in Fast 2 Furious (2003) and many others. For road-trip tourists:
- Best photo stops: Knight's Key Bridge (the small bridge just east of Seven Mile Bridge), Bahia Honda State Park (west end)
- Avoid peak crossing hours: mid-morning (10 AM-noon) when tour buses cross
- Allow 15-20 minutes to cross in normal conditions (55 mph speed limit)
- Pull-offs: There are no pull-offs on the bridge itself — photo stops are at Knight's Key Park (east) and Little Duck Key (west)
For Florida Keys travelers, see our Florida traffic cameras guide, Florida beach cams guide, Gulf Coast beach cams guide, Miami traffic cameras guide, MIA Miami airport guide, Fort Lauderdale guide, Atlantic hurricane season guide, and I-95 corridor guide.
Track Seven Mile Bridge Traffic
Browse live FDOT and 511 Florida camera feeds covering Seven Mile Bridge and the Overseas Highway.
VIEW SEVEN MILE BRIDGE CAMERAS →How long is the Seven Mile Bridge?
6.79 miles (10.93 km) per Britannica. The name "Seven Mile" was a rounded approximation when the original 1912 railroad bridge was built.
When was the Seven Mile Bridge built?
The modern bridge was built 1978-1982. The original railroad bridge was built 1905-1912 as part of Henry Flagler's Overseas Railroad. The original bridge was converted to an automobile highway after the 1935 Labor Day Hurricane destroyed the tracks — reopening in 1938 as the Overseas Highway.
Is the Seven Mile Bridge tolled?
No — Seven Mile Bridge is toll-free. The entire Overseas Highway (US-1 through the Keys) is toll-free.
Can I walk across the Seven Mile Bridge?
Not across the modern highway bridge itself — it's a limited-access road with no pedestrian shoulders. However, sections of the original 1912 railroad bridge remain adjacent and are open for pedestrians, cyclists, and fishing. The Old Seven Mile Bridge is accessible from Marathon at the east end.
Does the Seven Mile Bridge close for hurricanes?
The bridge itself doesn't typically close, but the Overseas Highway is closed during mandatory Keys evacuations and extreme weather. Since US-1 is the only road to Key West, closures completely isolate the Lower Keys. See the Atlantic hurricane season guide.
Are Seven Mile Bridge cameras free to view?
Yes. Every camera on TrafficVision.Live is free with no account required. We aggregate publicly operated FDOT and 511 Florida feeds.
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