Lewis and Clark National Historic Trail Auto Route Roads for 16 States

As of 2025, this dataset represents the official National Park Service centerline of the Lewis and Clark National Historic Trail Auto Route. It was created by the National Park Service with assistance from U.S. Department of State interns, derived from U.S. Census Bureau TIGER/Line road data. The Auto Route is a system of roads and highways bracketing the historic trail across 16 states.

Use Cases

• Mapping the road network for the Lewis and Clark National Historic Trail based on the described auto route system.
• Planning tourism and visitor travel routes to trail destinations based on the designated state roads.
• Analyzing transportation infrastructure connectivity across the 16 states mentioned in the description.
• Integrating historic trail spatial data with road network data for cultural heritage applications.

Strengths

• Official National Park Service centerline data as of 2025.
• Covers the auto route across 16 specified states.
• Derived from authoritative U.S. Census Bureau TIGER/Line road data.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

National Park Service, U.S. Department of the Interior.

Collection Method

Spatial data created by NPS with intern assistance, derived from U.S. Census Bureau TIGER/Line shapefiles.

Time Range

Data represents the official route as of 2025.

Freshness

Last updated 2026-03 04 01:21:23.129941; freshness should be verified.

Geography

Covers 16 states: Pennsylvania, West Virginia, Ohio, Kentucky, Indiana, Illinois, Missouri, Kansas, Nebraska, Iowa, South Dakota, North Dakota, Montana, Idaho, Washington, and Oregon.