The bridge system is designed to minimize human impact on the Narew National Park, a protected Ramsar site.
The floating pontoons rely on a pulley-and-chain mechanism that requires users to manually pull themselves across the wider river channels.
The path follows the historic route of the 'Królewska Grobla' (Royal Causeway), which dates back to the 16th century.
The Narew River is one of the few braided rivers in Europe, a geological feature that requires the specific pontoon system to navigate safely.
During high spring water levels, parts of the wooden walkway may be temporarily submerged or inaccessible.
The area is home to an exceptionally high density of marsh-nesting birds, making it a critical research site for ornithologists.
The Waniewo-Śliwno pontoon bridge system is a unique pedestrian walkway crossing the Narew River wetlands within the Narew National Park. It consists of a series of wooden footbridges and manually operated floating pontoons that allow visitors to cross the marshy, braided river channels. The structure covers approximately 1,200 meters, connecting the villages of Waniewo and Śliwno. By utilizing the floating pontoons, visitors traverse active water channels while remaining at water level amidst protected marshland vegetation. This location is a prime site for birdwatching, as the Narew River valley is a vital habitat for species such as the bittern and various raptors. The terrain is largely composed of peat bogs and alluvial meadows that are subject to seasonal flooding, which dictates the accessibility of the paths.
From the center of the floating pontoon crossing, capturing the wide, low-horizon view of the marshlands.
Bring binoculars for birdwatching and mosquito repellent for the humid, grassy terrain.
Wear comfortable, waterproof footwear, as the paths can be damp even in dry weather.
Be prepared to use some physical effort to pull the floating pontoons across the channels.
Do not attempt to cross if the water levels are excessively high or if there is ice on the river, as safety locks may be engaged.
Open only during the spring-to-autumn season; closed in winter due to ice and flooding risks.
Stay on the designated wooden paths to avoid damaging the protected peat bog ecosystem; keep noise levels low to avoid disturbing wildlife.
