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Crossover Island Lighthouse

Fl R 4s🇨🇦Upstate New York, CAInactive

Constructed in 1848, Crossover Island Light is situated on the Saint Lawrence River close to the Canada-United States border. The current cast iron tower, lined with brick and wood, was first lit in 1882. It stands as a white conical structure topped with a red lantern. The original lighting apparatus was a sixth-order Fresnel lens. The station was deactivated in 1941, with its foundation built upon a stone molehead.

Why it matters: Crossover Island Light Station was listed on the National Register of Historic Places in 2007.

Background
Crossover Island Light is a lighthouse on the Saint Lawrence River in New York state near the Canada–United States border. The lighthouse was established in 1848 and the last tower was first lit in 1882. The lighthouse was deactivated in 1941. The foundation is stone molehead and the lighthouse is made out of cast iron with brick and wood lining. The tower is a white conical tower with a red lantern. The original lens was a sixth-order Fresnel lens. The lighthouse was added to the National Register of Historic Places as Crossover Island Light Station in 2007.
Characteristic Signature
Fl R 4s
Flash Type
Flashing
Light Color
Red
Flash Count
1 flash
Interval
4s
Focal Height
9m
City
Upstate New York
Country
🇨🇦CA
Latitude
44.4970°
Longitude
-75.7783°
Flag
Type
Name
Dist.
Year Built
1848
Heritage Status
National Register of Historic Places listed place
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How do mariners identify Crossover Island Lighthouse at night?+
Crossover Island displays the characteristic Fl R 4s — 1 red flash every 4 seconds. Each lighthouse has a unique flash pattern published in the List of Lights, allowing mariners to positively identify it and distinguish it from other navigation aids in the area. The red color may indicate a specific sector or warning zone.
Which ports and harbors does Crossover Island Lighthouse guide vessels into?+
Crossover Island Lighthouse assists vessels approaching 5 nearby ports. The closest is Brockville at 6.8 NM to the NE. Other ports served include Morristown (7.7 NM NE), Rockport (9.6 NM SW), ALEXANDRIA BAY (11.5 NM SSW), Prescott (17 NM NE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Crossover Island Lighthouse still active and maintained?+
Crossover Island Lighthouse is currently listed as inactive. It may have been decommissioned, replaced by a different navigation aid, or temporarily taken out of service. Mariners should check the latest Notices to Mariners for current status.
How can I track vessels near Crossover Island Lighthouse?+
You can track vessels near Crossover Island Lighthouse in real time using MarineRadar. The platform shows live AIS positions of ships in the area, including vessel name, type, flag, speed, and course. Use the "Track Vessels Nearby" button on this page to open the live map centered on this lighthouse.