6/2026

Construction of new Larivot bridge in the Cayenne channel, Guyane

ActiveReceived 24 Aug 2026, 16:44 UTC

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Area: GUYANE Locality: CARTES 7377, 7379, Chenal de Cayenne WORKS_IN_PROGRESS Construction in progress of the new Larivot bridge between the communes of Macouria and Matoury. This works allows doubling the crossing of the Cayenne River. The expected duration of the works is indefinite. WORKS AREA DELIMITED BY : 04-54.71N 052-21.97W 04-54.65N 052-22.23W 04-54.16N 052-21.85W 04-54.31N 052-21.65W A temporary and evolving marking is in place to secure the site. It currently consists of the following: - A temporary transverse channel called “Chenal du Larivot” composed of four luminous lateral buoys: Red lateral buoy “L1” 04°54.404' N 052°21.787'W / range : 2M / rhythm : Q Green lateral buoy “L2” 04°54.363' N 052°21.763'W / range : 2M / rhythm : Q Red lateral buoy “L3” 04°54.318' N 052°21.919'W / range : 2M / rhythm : VQ Green lateral buoy “L4” 04°54.297' N 052°21.904'W / range : 2M / rhythm : VQ - Two special luminous marking buoys indicating the site: Special marking buoy “L” 04°54.5539' N 052°21.8620'W / range : 2M / rhythm : Fl 10s Special marking buoy “LA” 04°

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Analysis

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Construction is in progress of the new Larivot bridge between Macouria and Matoury in the Chenal de Cayenne, Guyane. A temporary, changeable marking system and a temporary transverse channel (Chenal du Larivot) of lateral buoys are in place to secure the works area. The works area is delimited by four positions and the expected duration of the works is indeterminate. Mariners are requested to navigate with great caution at reduced speed and contact local authorities for updates.

Navigate with the greatest caution at reduced speed in the works area and contact local authorities for the latest information.

Type: Offshore operations · severity moderate
Feed: Offshore works, rigs and towingAll warnings of this kind on the map, or as an API feed.
Location: Chenal de Cayenne, Guyane
Hazards: construction works, temporary works area, temporary buoys and marking
Cancels: avurnav local 1027/25
Charts: CARTES 7377, CARTES 7379

Aids to navigation affected

Newly establishedBouée latérale rouge 'L1' · range: 2M / rhythm: Q · 04°54.404' N 052°21.787'W
Newly establishedBouée latérale verte 'L2' · range: 2M / rhythm: Q · 04°54.363' N 052°21.763'W
Newly establishedBouée latérale rouge 'L3' · range: 2M / rhythm: VQ · 04°54.318' N 052°21.919'W
Newly establishedBouée latérale verte 'L4' · range: 2M / rhythm: VQ · 04°54.297' N 052°21.904'W
Newly establishedBouée marque spéciale 'L' · range: 2M / rhythm: Fl 10s · 04°54.5539' N 052°21.8620'W
Newly establishedBouée marque spéciale 'LA' · range: 2M / rhythm: Fl 10s · 04°54.4790' N 052°21.8260'W
Newly establishedBouée marque spéciale "pp amont" · range: n.c. / rhythm: Fl 10s · 04°54.3050' N 052°22.0079'W
Newly establishedBouée marque spéciale "pp aval" · range: n.c. / rhythm: Fl 10s · 04°54.3370' N 052°21.9560'W

No aids-to-navigation list in the database yet; aids are shown as the warning names them.

Worked out automatically from the warning text on 30 Oct 2026, 08:57 UTC. It can be wrong: the official warning text is the authority.

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