Idaho State Highway 9

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State Highway 9 marker

State Highway 9
North and South Highway Copeland – Porthill Branch
Copeland – Porthill Road
International Selkirk Loop
Route information
Maintained by ITD
Length: 13.522 mi[1] (21.762 km)
Major junctions
South end: SH 8 near Deary
North end: SH 6 near Harvard
Highway system
Latah county (ID) roads.PNG

State Highway 9 (SH-9) is a state highway in Latah County, in the U.S. state of Idaho. It runs 13.522 miles (21.762 km) from SH-8 near Deary, north to SH-6 near Harvard.[1]

Route description[edit]

SH-9 begins at an intersection with SH-8 near Deary and heads generally northwest and north to end at an intersection with SH-6 near Harvard.

Major intersections[edit]

The entire route is in Latah County.

Location mi[1] km Destinations Notes
Deary 0.000 0.000 SH 8 – Moscow Southern terminus, continuation west along SH-8
Harvard 13.522 21.762 SH 6 Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


SH-9 was the last State Highway in Idaho to be paved (though, as of 2012, SH-29 and SH-64 still have unpaved sections).

Original designation[edit]

The Lewis and Clark Highway, from Lewiston eastward to Lolo Pass, was designated state route 9 in 1916 and construction began in 1920.[2][3] Upon its completion in 1962, it became U.S. Route 12.[4]


Route map: Bing / Google

KML is from Wikidata
  1. ^ a b c Idaho Transportation Department (November 26, 2008). "Milepost Log". Retrieved 2008-12-31. 
  2. ^ "Lewis & Clark Highway link-up is urged for national defense". Lewiston Morning Tribune. September 24, 1950. p. 1-sec 2. 
  3. ^ Forbes, Bob (November 29, 1953). "Hiking the Wash-ho-tana in Lochsa wilds". Spokesman-Review. p. 9-This Week. 
  4. ^ "Highway 12 label approved by Idaho highway board". Lewiston Morning Tribune. Associated Press. June 26, 1962. p. 7.