How can I find out the official functional class of a highway?

New York State Department of Transportation (NYSDOT) has maps showing the seven functional classifications that are used for Federal-Aid and other planning and design purposes.

FUNCTIONAL CLASSIFICATION CODES

NYS Codes Urban

NYS Codes Rural

FHWA Codes

Principal Arterial - Interstate

11

01

1

Principal Arterial - Other Freeway/Expressway

12

02

2

Principal Arterial - Other

14

04

3

Minor Arterial

16

06

4

Major Collector

17

07

5

Minor Collector

18

08

6

Local

19

09

7

You can find information on the functional classes and use the NYSDOT Functional Class Viewer to find the functional classes of highways in your area.

Screen shot of  Functional Class Viewer

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