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Roadtechie can be reached by private message. As of 23 August 2022 (2022-08-23), the forum Private Message system is being replaced by a new Forum Chat feature. This template will need to be updated once that new Forum Chat feature is finalized. Details covered in this forum thread.

Personal wikis

Collection of canned UR responses

Quick Links

The United States of Waze (Who is your RC?)

All About Junctions

Junction Style Guide

Controlling Turn Instructions

Interchanges

Intersections

Statewide Quicklink

• INDOT Functional Class Map Viewer
• Statewide GIS

FC cross reference

Refer to this chart to determine the road type of a given paved public road based on the functional class.

To use this chart, first determine the functional class of a road, and whether it is a signed, numbered highway in a particular highway system.

Where the column for the road's highway system and the row for the road's functional class meet, you will find the proper road type for that particular road.

A number of examples are given below the chart.

		Highway Systems
		Interstate	Interstate Business Loop/Spur	US Hwy (incl. some special routes)	US Hwy BUS, SPUR, LOOP	State Hwy (incl. some special routes)	State Hwy BUS, SPUR, LOOP	FM / County Route	Locally-maintained
	example	I-10 E	I-94 Business	US-190	US-460 Business	SR-23	SR-400 Loop	FM 40 / CR-15	Robertson St
F u n c t i o n a l C l a s s	Interstate	Fw	n/a	n/a	n/a	n/a	n/a	n/a	n/a
	Other Freeway	n/a	Fw	Fw	Fw	Fw	Fw	Fw	Fw
	Other Expressway	n/a	Major	Major	Major	Major	Major	Major	Major
	Other Principal Arterial	n/a	Major	Major	Major	Major	Major	Major	Major
	Minor Arterial	n/a	Major	Major	Minor	Minor	Minor	Minor	Minor
	Major Collector	n/a	Major	Major	Minor	Minor	PS	PS	PS
	Minor Collector	n/a	Major	Major	Minor	Minor	PS	PS	PS
	Local/not mapped	n/a	Major	Major	Minor	Minor	PS	Street	Street

^a When a state highway "SPUR" route is used to connect a state highway with another state highway, a US highway, or an Interstate (i.e., when it is used as a connector/CONN route), use the first state highway column.

^b Also known as Principal Arterial - Interstate.

^c Also known as Principal Arterial - Freeway.

^d Also known as Principal Arterial - Expressway.

^e Also known as Principal Arterial.

^f Also known as Other Arterial.

For example,

• An Interstate Business Loop classified as a Minor Arterial is a  Major Highway .
• A US Highway classified as a Minor Arterial is a  Major Highway .
• A US Highway Spur route classified as a Minor Arterial is a  Minor Highway .
• A State Highway classified as a Collector is a  Minor Highway .
• A County Route classified as a Minor Arterial is a  Minor Highway .
• A County Route classified as a Collector is a  Primary Street 
• A locally-maintained road classified as an Other Principal Arterial is a  Major Highway .
• A locally-maintained road classified as a Collector is a  Primary Street .

Legend

Fw	Freeway
Major	Major Highway
Minor	Minor Highway
PS	Primary Street
Street	Street