Traffic Inventory 2024

Purpose: The Traffic Inventory is a GIS-based asset management system for the state's highway transportation system. As such, its strengths are in describing the configuration and condition of public roads and rights-of-way. It is not designed to support route-finding (e.g., shortest path applications), nor is it designed to support geocoding (although in theory intersection-based geocoding could be set up on it). It is part of the official documentation of the state road system and is used to prepare the yearly Highway Performance Monitoring System (HPMS) report to the Federal Highway Administration (FHWA).

***Note: In 2023 many local roads were excluded because their AADT values are modeled and not counted. Due to popular demand, we have included these local roads with modeled values for the 2024 Traffic Inventory. These modeled counts can be distinguished through the field AADT Derivation = Modeled Count (25). We advise that any comparisons between the two years take this discrepancy into account and that any users are aware that the modeled values do not reflect actual AADT counts.