• Organization: Department of the Interior
• Updated: 2016-04-19T00:00:00Z

The original NPS Auto Route of the Lewis and Clark National Historic Trail, prior to the Trail's extension by Congress (P.L. 90-543, as amended through P.L. 116-9, March 12, 2019). The most...

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• Organization: Department of the Interior
• Updated: 2026-02-02T00:00:00Z

This webmap highlights the official National Park Service centerline of the Lewis and Clark National Historic Trail Auto Route. The spatial data was created by the National Park Service with the...

• Organization: Department of the Interior
• Updated: 2017-03-01T00:00:00Z

The Lewis and Clark National Historic Trail Auto Route is a system of over 6,100 miles of roads and highways bracketing each side of the Lewis and Clark National Historic Trail, which commemorates...

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• Organization: Department of the Interior
• Updated: 2026-01-16T00:00:00Z

This data set represents a simplified version of the official National Park Service centerline of the Lewis and Clark National Historic Trail Auto Route for use in the National Park Service NP Map...

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• Organization: Department of the Interior
• Updated: 2025-11-26T00:00:00Z

As of 2025, this data set represents the official National Park Service centerline of the Lewis and Clark National Historic Trail Auto Route. The spatial data was created by the National Park...

• api