Idaho State Highway 3 is a state highway in northern Idaho

Idaho

Idaho is a state in the Rocky Mountain area of the United States. The state's largest city and capital is Boise. Residents are called "Idahoans". Idaho was admitted to the Union on July 3, 1890, as the 43rd state....

 connecting US 12 near Spalding

Spalding, Idaho

Spalding is an unincorporated village in Nez Percé County, Idaho, United States, ten miles east of Lewiston, on the Clearwater River close to the intersection of U.S. Routes 95 and 12...

 with I-90

Interstate 90 in Idaho

In the U.S. state of Idaho, Interstate 90 has a small routing in the panhandle, just under 74 miles . Traveling east from Spokane, Washington, I-90 passes through Post Falls and Coeur d'Alene, over Fourth of July Summit, and through the Silver Valley before entering Montana at Lookout Pass.I-90 is...

 near Rose Lake. It is 117.393 miles (188.925 km) long and runs north–south.

Route description

SH-3's southern terminus is near Arrow Gulch Creek Bridge to the east of Spalding, Idaho

Spalding, Idaho

Spalding is an unincorporated village in Nez Percé County, Idaho, United States, ten miles east of Lewiston, on the Clearwater River close to the intersection of U.S. Routes 95 and 12...

 on US 12 on the Nez Perce Indian Reservation in Nez Perce County

Nez Perce County, Idaho

Nez Perce County [Eng. pron. Nezz Purse] is a county located in the U.S. state of Idaho. The population was 39,265 at the 2010 Census. The county seat is Lewiston. The county is named for the Nez Percé tribe....

. It then heads generally northeast into Latah County

Latah County, Idaho

Latah County is a county located in the north central region of the U.S. state of Idaho. The population was 37,244 at the 2010 census. The county seat and largest city is Moscow, which is the home of the University of Idaho, the state's flagship and land-grant university...

, where it leaves the Nez Perce reservation, and continues through Juliaetta

Juliaetta, Idaho

Juliaetta is a city in Latah County, Idaho, United States. The population was 609 at the 2000 census.-Geography:Juliaetta is located at and lies approximately 2 miles north of the Nez Perce Indian Reservation...

 and Kendrick

Kendrick, Idaho

Kendrick is a city in Latah County, Idaho, United States. The population was 369 at the 2000 census.-Geography:Kendrick is located at , near the Potlatch River....

, where it intersects SH-99. It then continues generally north to Deary

Deary, Idaho

Deary is a city in Latah County, Idaho, United States. The population was 552 at the 2000 census.-Geography:Deary is located at .According to the United States Census Bureau, the city has a total area of , all of it land....

, where it overlaps SH-8

Idaho State Highway 8

State Highway 8 is an Idaho state highway in Latah and Clearwater counties, running from the Washington state line in Moscow to Elk River. It is in length, and runs primarily east–west.-Route description:...

. The overlapping highways continue east and northeast to Bovill

Bovill, Idaho

Bovill is a city in Latah County, Idaho, United States. The population was 305 at the 2000 census.-History:Bovill was named for a settler.The Bovill Opera House, at 2nd and Pine, was listed on the National Register of Historic Places in 2010.-Geography:...

, where they diverge.

SH-3 then continues generally north through Shoshone County

Shoshone County, Idaho

Shoshone County is a county located in the U.S. state of Idaho. The county was established in 1864, named for the Native American Shoshone tribe. The population was 12,765 at the 2010 census. Shoshone County is commonly referred to as the Silver Valley, due to its century-old mining history...

, crossing the Saint Maries River

Saint Maries River

Saint Maries River is a river located in the U.S. state of Idaho. It is a tributary of Coeur d'Alene Lake and thus part of the Spokane River drainage basin and the Columbia River Basin. The West and Middle Forks of the river join near Clarkia, Idaho and run parallel to State Highway 3 in a...

, into Benewah County

Benewah County, Idaho

Benewah County is a county located in the U.S. state of Idaho. Established on January 23, 1915, from sections of Kootenai County, it was named for a chief of the Coeur d'Alene Tribe. As of the 2010 census the county had a population of 9,285. The county seat and largest city is St...

. It then turns generally northwest to Santa

Santa, Idaho

Santa is an unincorporated community in Benewah County, Idaho, United States. Santa is located on Idaho State Highway 3 south-southeast of St. Maries. Santa has a post office with ZIP code 83866....

, where it intersects SH-6

Idaho State Highway 6

Idaho State Highway 6 is a state highway in northern Idaho running from the Washington state line near Potlatch to Santa. It is long and runs north-south.-Route description:...

.

SH-3 then continues generally north to Saint Maries, where it intersects SH-5

Idaho State Highway 5

State Highway 5 is a state highway in Benewah County, in the U.S. state of Idaho. It runs from U.S. Route 95 in Plummer, east to SH-3 in Saint Maries.-Route description:...

 before crossing the St. Joe River and entering the Couer d'Alene

Coeur d'Alene Tribe

The Coeur d'Alene are a Native American people who lived in villages along the Coeur d'Alene, St. Joe, Clark Fork and Spokane Rivers; as well as sites on the shores of Lake Coeur d'Alene, Lake Pend Oreille and Hayden Lake, in what is now northern Idaho, eastern Washington and western Montana.In...

 Indian Reservation. It then continues generally northwest and north past a historical marker for Saint Joseph Indian Mission into Kootenai County

Kootenai County, Idaho

Kootenai County is a county located in the U.S. state of Idaho. The county was established in 1864, named after Kootenai tribe. The entire county comprises the Coeur d'Alene, Idaho Metropolitan Statistical Area. The population was 138,494 at the 2010 census...

.

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

Coeur d'Alene River

The Coeur d'Alene River flows from the Silver Valley into Lake Coeur d'Alene in the U.S. state of Idaho. The stream continues out of Lake Coeur d'Alene as the Spokane 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

Major intersections

County	Location	Mile	Destinations	Notes
Nez Perce Nez Perce County, Idaho Nez Perce County [Eng. pron. Nezz Purse] is a county located in the U.S. state of Idaho. The population was 39,265 at the 2010 Census. The county seat is Lewiston. The county is named for the Nez Percé tribe....	Spalding Spalding, Idaho Spalding is an unincorporated village in Nez Percé County, Idaho, United States, ten miles east of Lewiston, on the Clearwater River close to the intersection of U.S. Routes 95 and 12...	0.00		Southern terminus, continuation westward along US 12
Latah Latah County, Idaho Latah County is a county located in the north central region of the U.S. state of Idaho. The population was 37,244 at the 2010 census. The county seat and largest city is Moscow, which is the home of the University of Idaho, the state's flagship and land-grant university...	Kendrick Kendrick, Idaho Kendrick is a city in Latah County, Idaho, United States. The population was 369 at the 2000 census.-Geography:Kendrick is located at , near the Potlatch River....	12.355
	Deary Deary, Idaho Deary is a city in Latah County, Idaho, United States. The population was 552 at the 2000 census.-Geography:Deary is located at .According to the United States Census Bureau, the city has a total area of , all of it land....	29.000		Begin overlap
	Bovill Bovill, Idaho Bovill is a city in Latah County, Idaho, United States. The population was 305 at the 2000 census.-History:Bovill was named for a settler.The Bovill Opera House, at 2nd and Pine, was listed on the National Register of Historic Places in 2010.-Geography:...	39.000		End overlap
Shoshone Shoshone County, Idaho Shoshone County is a county located in the U.S. state of Idaho. The county was established in 1864, named for the Native American Shoshone tribe. The population was 12,765 at the 2010 census. Shoshone County is commonly referred to as the Silver Valley, due to its century-old mining history...				No major intersections
Benewah Benewah County, Idaho Benewah County is a county located in the U.S. state of Idaho. Established on January 23, 1915, from sections of Kootenai County, it was named for a chief of the Coeur d'Alene Tribe. As of the 2010 census the county had a population of 9,285. The county seat and largest city is St...	Santa Santa, Idaho Santa is an unincorporated community in Benewah County, Idaho, United States. Santa is located on Idaho State Highway 3 south-southeast of St. Maries. Santa has a post office with ZIP code 83866....	70.070		Santa Junction
	Saint Maries	84.542
Kootenai Kootenai County, Idaho Kootenai County is a county located in the U.S. state of Idaho. The county was established in 1864, named after Kootenai tribe. The entire county comprises the Coeur d'Alene, Idaho Metropolitan Statistical Area. The population was 138,494 at the 2010 census...	Harrison Harrison, Idaho Harrison is a city in Kootenai County, Idaho, United States. The population was 267 at the 2000 census.-History:The community was named for President Benjamin HarrisonHarrison was incorporated in 1899 and was once the largest city on Lake Coeur d'Alene....	95.880		Continuation northward on SH-97
	Rose Lake	117.680		Northern terminus; continuations eastward and westward on I-90