Idaho State Highway 3

State highway in Idaho, United States

Major junctionsSouth end

US 12 near SpaldingMajor intersections

SH-99 in Kendrick

SH-8 in Deary

SH-8 in Bovill

SH-6 near Santa

SH-5 in St. Maries

SH-97 near HarrisonNorth end

I-90 near Rose Lake LocationCountryUnited StatesStateIdahoCountiesNez Perce, Latah, Shoshone,
Benewah, Kootenai Highway system

Idaho State Highway System

←

US 2

→

SH-4

State Highway 3 (SH-3) is a state highway in northern Idaho, connecting U.S. Route 12 near Spalding, east of Lewiston, with Interstate 90 near Rose Lake, east of Coeur d'Alene. It is 117.68 miles (189.4 km) in length and runs north–south,^[1] east of and generally parallel to Idaho's primary north–south highway, U.S. Route 95.

Route description

SH-3's southern terminus is near Arrow Gulch Creek Bridge to the east of Spalding on US 12 on the Nez Perce Indian Reservation in Nez Perce County. It then heads generally northeast into eastern Latah County, where it leaves the reservation, and continues through Juliaetta and Kendrick, where it intersects SH-99. It then continues generally north to Deary, where it overlaps SH-8. The overlapping highways continue east and northeast to Bovill, where they diverge.^[1]^[2]

SH-3 then continues generally north through Shoshone County, crossing the Saint Maries River, into Benewah County. It then turns generally northwest to Santa, where it intersects SH-6.^[1]

SH-3 then continues generally north to Saint Maries, where it intersects SH-5 before crossing the Saint Joe River and entering the Coeur d'Alene Indian Reservation. It then continues generally northwest and north past a historical marker for Saint Joseph Indian Mission into Kootenai County.^[1]^[3]

In Kootenai County, SH-3 continues generally north past an intersection with SH-97 and a historical marker for The Mullan Road, then over Mission Hill Creek Grade and Black Rock Grade before leaving the Coeur d'Alene reservation. It then turns east and northeast along and across the Coeur d'Alene River to Rose Lake. It then continues generally northeast and east to the northern terminus, east of the 4th of July Creek Bridge on I-90.^[1]^[3]

History

In 2011, the state legislature designated SH-3 as the North Idaho Medal of Honor Highway.^[4]

Major intersections

County	Location	mi^[1]	km	Destinations	Notes
Nez Perce		0.000	0.000	US 12 – Lewiston, Orofino, Missoula	Southern terminus
Latah	Kendrick	12.355	19.883	SH-99 north – Troy
	Deary	29.000	46.671	SH-8 west – Moscow	Begin SH-8 overlap
	Bovill	39.000	62.764	SH-8 east – Elk River	End SH-8 overlap
Shoshone	No major junctions
Benewah		70.070	112.767	SH-6
Benewah	St. Maries	84.542	136.057	SH-5 west – Plummer
Kootenai		95.880	154.304	SH-97 – Harrison
Kootenai		117.680	189.388	I-90 – Coeur d'Alene, Kellogg, Missoula
1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus

References

^ ^a ^b ^c ^d ^e ^f ^g Idaho Transportation Department (November 26, 2008). "Milepost Log". Archived from the original on December 13, 2012. Retrieved 2008-12-22.
^ ^a ^b Idaho Transportation Department (November 26, 2008). "Milepost Log". Archived from the original on May 25, 2014. Retrieved 2008-12-22.
^ ^a ^b Idaho Transportation Department (May 26, 2005). "Idaho Highway Historical Marker Guide Index". Archived from the original on December 15, 2008. Retrieved 2008-12-20.
^ "Idaho road designated Medal of Honor Highway". The Idaho Press-Tribune. Associated Press. March 16, 2011. Retrieved August 27, 2021.