U.S. Route 12 in Idaho

U.S. Route 12US 12US-12Northwest Passage Scenic BywayU.S. 12highwayLewis and Clark HighwayU.S. Highway 12
U.S. Route 12 (US 12) is a federal highway in north central Idaho.wikipedia
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North Central Idaho

north centralnorthernnorth
U.S. Route 12 (US 12) is a federal highway in north central Idaho.

National Scenic Byway

All-American RoadNational Scenic BywaysNational Scenic Byways Program
It extends 174.210 mi from the Washington state line in Lewiston east to the Montana state line at Lolo Pass, generally along the route of the Lewis and Clark expedition, and is known as the Northwest Passage Scenic Byway It was previously known as the Lewis and Clark Highway.

Idaho State Highway 3

SH-3State Highway 33
It continues east to intersect SH-3 and cross the Clearwater again.
Idaho 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.

Nez Perce County, Idaho

Nez PerceNez Perce County Nez Perce County, Idaho
US 12 enters Idaho at the Washington state line in Lewiston, Nez Perce County, crossing the Snake River at the state line.

Lewiston, Idaho

LewistonLewiston, IDLewiston (ID)
It extends 174.210 mi from the Washington state line in Lewiston east to the Montana state line at Lolo Pass, generally along the route of the Lewis and Clark expedition, and is known as the Northwest Passage Scenic Byway It was previously known as the Lewis and Clark Highway.

Clearwater River (Idaho)

Clearwater RiverClearwaterClearwater Valley Rams
It heads east through Lewiston, turning north to cross the Clearwater River and intersect SH-128.
U.S. Route 12 follows the river to Kamiah, where it is joined by Lawyer Creek from the southwest.

Idaho State Highway 11

SH-11Highway 11State Highway 11
In Lewis County, US 12 continues southeast along the south bank of the Clearwater, intersecting SH-11 at Greer and passing a historical marker for a ferry operated in the original 1860 gold rush.
It runs 42.481 mi from U.S. Route 12 (US 12) near Greer, north to Forest Service Roads 246 and 247 near Headquarters.

Idaho State Highway 128

SH 128SH-128spur route
It heads east through Lewiston, turning north to cross the Clearwater River and intersect SH-128.
The highway travels east along the Clearwater River within Lewiston from Washington State Route 128 (SR 128) to U.S. Route 12 (US-12).

Lewis County, Idaho

LewisLewis CountyIdaho
In Lewis County, US 12 continues southeast along the south bank of the Clearwater, intersecting SH-11 at Greer and passing a historical marker for a ferry operated in the original 1860 gold rush.

Clearwater County, Idaho

ClearwaterClearwater CountyIdaho
Entering Clearwater County, US 12 continues east along the south bank of the Clearwater through Orofino.

Greer, Idaho

GreerFraserFraser, Idaho
In Lewis County, US 12 continues southeast along the south bank of the Clearwater, intersecting SH-11 at Greer and passing a historical marker for a ferry operated in the original 1860 gold rush.
Greer is located along the Clearwater River and Idaho State Highway 11, near the junction with U.S. Route 12 (also known as the Northwest Passage Scenic Byway), 7 mi southeast of Orofino.

Idaho County, Idaho

Idaho CountyIdahocounty in Washington Territory
It then enters Idaho County, and continues south along the north bank of the Clearwater, crossing Nez Perce National Historical Park.

Idaho State Highway 13

SH-13SH 13State Highway 13
It then continues south along the north bank of the Clearwater, intersecting SH-13 across the river from Kooskia.
SH 13 is 26 mi long and runs from U.S. Route 95 (US 95) in Grangeville to US-12 in Kooskia.

Lochsa River

Lochsa
US 12 then continues to Lowell, where it turns northeast along the north bank of the Lochsa River through the Bitterroot Mountains.
Running parallel to U.S. Route 12 for its entire length, the river winds through the Clearwater National Forest in the Bitterroot Mountains.

Kooskia, Idaho

Kooskia(Kooskia)Kooskia, ID
It then continues south along the north bank of the Clearwater, intersecting SH-13 across the river from Kooskia.
The site, now an archaeological project, is 6 mi northeast of Lowell on U.S. 12, on the north bank of the Lochsa River.

Orofino, Idaho

OrofinoOro FinoOrofina
Entering Clearwater County, US 12 continues east along the south bank of the Clearwater through Orofino.
The city is served by US 12, a two-lane undivided highway on the south bank of the Clearwater River, connected to Orofino by a bridge.

Idaho State Highway 7

SH-7
Just after leaving Orofino, it briefly overlaps SH-7, then continues southeast along the south bank of the Clearwater, past a historical marker for the point where Lewis and Clark first found a western-flowing river.
SH-7 continues north, briefly overlapping US 12 before crossing the Clearwater River into Orofino.

Lowell, Idaho

Lowell
US 12 then continues to Lowell, where it turns northeast along the north bank of the Lochsa River through the Bitterroot Mountains. Federal prison labor was used in the late 1930s and Japanese internment labor was used during the last two years of World War II, working out of the Kooskia Internment Camp, 6 mi upstream of Lowell, just below milepost 104.
U.S. Route 12 is the only major highway to serve the community, and occupies the north bank of the Lochsa (and Clearwater).

Kooskia Internment Camp

KooskiaKooskia, Idaho
Federal prison labor was used in the late 1930s and Japanese internment labor was used during the last two years of World War II, working out of the Kooskia Internment Camp, 6 mi upstream of Lowell, just below milepost 104.
Originally a remote highway work camp (F-38) of the Civilian Conservation Corps in 1933, it became Federal Prison Camp No.

Idaho State Highway 162

SH-162State Highway 162
It then continues southeast into Kamiah, where it intersects SH-162.
The highway ends at an intersection with U.S. Route 12 at 3rd Street.

Lolo Pass (Idaho–Montana)

Lolo PassLolo TrailLolo Trail (Salish: Naptnišaqs - "Nez Perce Trail")
It extends 174.210 mi from the Washington state line in Lewiston east to the Montana state line at Lolo Pass, generally along the route of the Lewis and Clark expedition, and is known as the Northwest Passage Scenic Byway It was previously known as the Lewis and Clark Highway.
U.S. Highway 12, belatedly completed in 1962, crosses the pass.

United States Numbered Highway System

U.S. HighwayU.S. Highway SystemUnited States highway
U.S. Route 12 (US 12) is a federal highway in north central Idaho.

Idaho

IDState of Idaho(ID)
U.S. Route 12 (US 12) is a federal highway in north central Idaho.

Montana

MTState of MontanaMontana, USA
It extends 174.210 mi from the Washington state line in Lewiston east to the Montana state line at Lolo Pass, generally along the route of the Lewis and Clark expedition, and is known as the Northwest Passage Scenic Byway It was previously known as the Lewis and Clark Highway.

Lewis and Clark Expedition

Lewis and ClarkLewis & ClarkLewis & Clark Expedition
It extends 174.210 mi from the Washington state line in Lewiston east to the Montana state line at Lolo Pass, generally along the route of the Lewis and Clark expedition, and is known as the Northwest Passage Scenic Byway It was previously known as the Lewis and Clark Highway.