List of crossings of the Upper Passaic River

[1] The Passaic traverses 45 municipalities, and its watershed provides drinking water for more than 3.5 million people in the region.

[2][3] The midpoint of the upper river generally delineates the Passaic-Bergen, Passaic-Essex, Essex-Morris, Morris-Union and sections of the Morris-Somerset county lines.

[12] The creation of Society for Establishing Useful Manufactures in 1791[13][14] began a period of development of cities and industries along the river.

The emergence of the early railroads in the state led to further industrialization and urbanization and many rail bridges.

[16][17] The advent of the automobile age and suburbanization in the early and mid-20th century saw the construction of highway bridges in northern New Jersey.