National Highway Freight Network Map and Tables for South Dakota

This map shows the Primary Highway Freight System (PHFS) routes as well as all the Interstate Highways within the state that are not part of the PHFS.

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Table of National Highway Freight Network Routes

PRIMARY HIGHWAY FREIGHT SYSTEM (PHFS) ROUTES
State	Route No	Start Point	End Point	Route/Facility Description	Length (Miles)
SD	I90	WY/SD Line	SD/MN Line	I90 from WY/SD Line to SD/MN Line	412.68
PHFS Total					412.68

INTERSTATE NOT ON THE PHFS
State	Route No	Start Point	End Point	Route/Facility Description	Length (Miles)
SD	I190	I90	S79	I190 from I90 to S79	1.45
SD	I229	I29	I90	I229 from I29 to I90	11.34
SD	I29	IA/SD Line	SD/ND Line	I29 from IA/SD Line to SD/ND Line	252.55
INTERSTATE NON-PHFS Total					265.34

Note: PHFS and the Non-PHFS Interstate mileage is based on the U.S. Department of Transportation, Federal Highway Administration, All Roads Network of Linear Referenced Data (ARNOLD) - 2019 geospatial database. Non-PHFS Interstate mileage can fluctuate based on changes made to the Interstate System. The mileage for Non-PHFS Interstate is based on the Interstate Mileage reported in the National Highway System (NHS) as of October 17, 2019. The mileage for CRFCs and CUFCs is based on the State reported data as of January 27, 2023