National Functional Class
Number of Lanes
SEMCOG Pavement Condition Map:
Lane and centerline miles represent the approximate rated miles on federal aid link segments in the current map view only. This number should be used as an approximation of lane and centerline miles.
Centerline miles: length, in miles, of a roadway.
Lane miles: the centerline length of the road in miles times the number of travel lanes striped on the segment of road; a lane mile also may be defined as one mile of roadway that is designated as a driving lane.
PASER rating Detail Definition
Good 8, 9, and 10: New or like new road; only requires regular maintenance.
Fair 5, 6, and 7: Road surface shows some wear or aging; prime candidates for capital preventive maintenance such as crack sealing or a thin overlay to prolong the life of the road.
Poor 1, 2, 3, and 4: Road surface reaching the end of its life; most cost effective repairs include rehabilitation and reconstruction.
National functional classes Detail Definition
- Interstate: limited access
- Other freeway: limited access with features of interstate.
- Other principal arterial: connecting routes between cities.
- Minor arterial: shorter trip distances.
- Major collector: routes which funnel traffic from minor collectors.
- Minor collector: routes with more through traffic.
Note: 2003 to 2007 PASER ratings were collected on 100% of federal aid roads. From 2008 to 2019, the federal aid system was divided in half, so the entire system was collected over a two-year rating period. No data was collected in 2020. PASER data was collected on all federal aid roads in 2021. In 2022, the federal aid system was divided in half again.
Additional information provided includes:
- Road Name
- Pavement Surface
- Number of Lanes
- PASER Rating by year