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St. Louis Region

Jefferson County's port authority points to the Mississippi edge

Jefferson County's Port Authority is a local-government clue that the county's Mississippi River edge is also an industrial and transportation corridor.

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Jefferson County’s eastern edge is not only river scenery. The county’s Port Authority page says the authority began in 1976 and worked on development along the county’s eastern border on the Mississippi River.

The page also describes a local development puzzle: land availability, connections to Interstate 55, and the idea of a multimodal port system built around river, rail, and road. That is a very Jefferson County kind of civic layer, tied to Herculaneum, the riverfront, and old industrial land.

For a newcomer, this helps explain why the Mississippi side of the county can feel different from the sandstone parks and rural hills farther west. It is a local-government and transportation corridor, not just a line on the map.

Where to see it

References

More from Jefferson County: browse every local note for the county.

Last checked against the sources above: July 16, 2026.

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More Local Government notes · every Jefferson County note.

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