US HIGHWAY 12

Length in Idaho

174 miles

Length nationally

2483 miles

Termini in Idaho

1962-present

Lewiston

Lolo Pass

MULTIPLEXES

US 95

Lewiston

(north of Lapwai)

HISTORIC US HIGHWAY 410

Historic length in Idaho

3 miles

Termini in Idaho

1926-1967

Lewiston

Lewiston

NOTES

When the US Highway system was created in 1926, US 12 did not enter Idaho. US 410 followed US 12's current path through Washington (except from Naches to Elma) and briefly entered Idaho at the time. US 12 was extended across Lolo Pass in 1962 (along former Idaho 9) to Lewiston, and ended at the aforementioned US 95/410 junction (so both US 12 and US 410 ended at the same point). Five years later, someone with WSDOT realized the madness of it all and extended US 12 along US 410's old corridor. The link below (Lewiston) has anything you would want to know about highways in Lewiston and does a much better job explaining it than I do.

RELATED PAGES

Idaho Highway 9

Dale Sanderson's (Mapguy) Lewiston Highways Page

CREDITS & LINKS

IDAHO HIGHWAYS HOME