Iowa Primary Route Reference Post Sign Locations

A geospatial feature class containing the locations of reference post signs along all primary routes in Iowa. The State of Iowa maintains this data, which includes a virtual post at the start of each route. The dataset was last updated in April 2026.

Use Cases

• Map and analyze the spatial distribution of reference posts using their geospatial coordinates.
• Calculate distances between reference posts to assess route segment lengths.
• Identify the starting point of every primary route via the included '0 value virtual post' feature.
• Integrate sign locations with other road asset data for maintenance planning.

Strengths

• Covers all primary routes within the state of Iowa.
• Includes a defined starting point (virtual post) for each route.
• Data was updated in April 2026.

Limitations

• The exact number of records (rows) and spatial precision are unknown.
• The description clarifies signs are not necessarily spaced at mile intervals, limiting use for uniform distance calculations.

Provenance

Source

State of Iowa.

Collection Method

null

Time Range

null

Freshness

Updated April 2026.

Geography

State of Iowa, USA.