Idaho State Highway 3

State Highway 3
Route information
Maintained by ITD
Length:	117.680 mi[1][2] (189.388 km)
Major junctions
South end:	US-12 near Spalding
	SH-99 in Kendrick SH-8 in Deary SH-8 in Bovill SH-6 near Santa SH-5 in St. Maries SH-97 near Harrison
North end:	I-90 near Rose Lake
Highway system
State Highways in Idaho ← US-2 SH-4 →

Idaho State Highway 3 (SH-3) is a state highway in northern Idaho connecting US 12 near Spalding with I-90 near Rose Lake. It is 117.680 miles (189.388 km) long and runs north–south.^[1]

Route description

SH-3's southern terminus is near Arrow Gulch Creek Bridge to the east of Spalding, Idaho on US 12 on the Nez Perce Indian Reservation in Nez Perce County. It then heads generally northeast into Latah County, where it leaves the Nez Perce 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 St. 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]

Major intersections

County	Location	mi[1]	km	Destinations	Notes
Nez Perce	Spalding	0.000	0.000	US-12 – Spalding	Southern terminus, continuation westward along US 12
Latah	Kendrick	12.355	19.883	SH-99 – Troy
	Deary	29.000	46.671	SH-8	Begin overlap
	Bovill	39.000	62.764	SH-8	End overlap
Shoshone	No major junctions
Benewah	Santa	70.070	112.767	SH-6	Santa Junction
	Saint Maries	84.542	136.057	SH-5
Kootenai	Harrison	95.880	154.304	SH-97 – Harrison	Continuation northward on SH-97
	Rose Lake	117.680	189.388	I-90 – Kingston, Coeur d'Alene	Northern terminus; continuations eastward and westward on I-90
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

Route map: Bing / Google

1. Idaho Transportation Department (November 26, 2008). "Milepost Log". Retrieved 2008-12-22.
2. Idaho Transportation Department (November 26, 2008). "Milepost Log". Retrieved 2008-12-22.
3. Idaho Transportation Department (May 26, 2005). "Idaho Highway Historical Marker Guide Index". Retrieved 2008-12-20.