U.S. Route 10 Alternate (Washington–Montana)
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U.S. Route 10A (US 10A) was an alternate route of US 10 that existed between 1941 and 1967. From 1941 to 1947, it ran between Seattle, Washington, and Missoula, Montana. Since its decommissioning, it has been replaced by Idaho State Highway 200 (SH-200), Montana Highway 200 (MT 200), and US 2. By 1947,[2] it had been rerouted to run concurrently with US 95, as the majority of its former route had been replaced by the western extension of US 2 from Bonners Ferry, Idaho, to Everett, Washington. This change led the highway to begin in Coeur d'Alene, Idaho, rather than in Seattle. It would remain in this configuration until its decommissioning in 1967, as I-90 gradually replaced US 10.[3]
.svg) U.S. Route 10A | |
|---|---|
 The 1941 alignment of US 10A highlighted in red and the 1947 alignment of US 10A in blue | |
| Route information | |
| Auxiliary route of US 10 | |
| Length | 567 mi[1][a] (912 km) |
| Existed | 1941–1967 |
| Major junctions | |
| West end |   I-90 / US 10 in Coeur d'Alene, ID |
| |
| East end | I-90 / US 10 in Wye, MT |
| Location | |
| Country | United States |
| States | Washington, Idaho, and Montana |
| Highway system | |
| |
Route description
editThis section needs expansion. You can help by adding to it. (November 2020) |
Washington
editUS 10A split from US 10 in Seattle. The highway would then follow US 99 (modern Washington State Route 99) north to Everett. There it separated from US 99. It then traveled east across the Cascade Range via Stevens Pass to central Washington. In Spokane, the highway followed US 195 to Sandpoint, Idaho.
Idaho
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In Idaho, US 10A went through Bonner County and the town of Sandpoint. In Sandpoint, US 10A intersected US 95. At the intersection, US 195 terminated, and US 10A would follow the shore of Lake Pend Oreille, serving the communities of Hope and Clark Fork before entering Montana.
1947 reroute
editAfter its reroute in 1947, US 10A started in Coeur d'Alene concurrent with US 95. It would follow US 95 north to Sandpoint. At the intersection with US 2, US 10A spilt from US 95 and went east toward Clark Fork.
Montana
editIn Montana, the route would then follow through rural northwestern Montana and the towns of Plains and Thompson Falls parallel to the Clark Fork and Flathead rivers. It then intersected US 93 in Ravalli. It then ran concurrently with US 93 south to Wye, where US 10A ended at Desmet Junction intersecting US 10 and US 93.
History
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US 10A was formed in 1941 as an alternate route of US 10 going through northwestern Montana, northern Idaho, and central Washington. In Washington, it would follow the former route of US 10 through Stevens Pass before it was rerouted in 1939.[4] It served as an artery to isolated communities in those states, such as Clark Fork, Idaho; Plains, Montana; as well as several small towns in central Washington. It also replaced MT 3.[5]
In 1946, representatives of the highway departments of Idaho and Washington proposed an extension of US 2 to Everett that was considered by the American Association of State Highway Officials's U.S. Route Numbering Committee in January 1946; however, the committee vetoed the proposal. The proposal resurfaced during the committee's meeting on December 20, 1946, and US 2 was approved as a replacement for US 10A from Everett to Sandpoint and US 195 from Spokane to Newport; however, US 195 would remain on road maps in Washington until at least 1951.[6] In 1947, following the extension of US 2, US 10A was rerouted to start in Coeur d'Alene along US 95.
US 10A was decommissioned in 1967, as its parent route, US 10, was being replaced by Interstate 90 (I-90). After its decommissioning, the states of Idaho and Montana had replaced the former US 10A route with state highways. Montana renumbered MT 20, which had already been routed on US 10A by 1956,[5] to MT 200. Idaho established SH-200 to replace US 10A a year later. Both highways were a part of a series of similarly numbered routes in Minnesota and North Dakota with the end goal being a unified federal designation.[7]
Major intersections
editThis section is missing mileposts for junctions. |
| State | County | Location | mi | km | Destinations | Notes |
|---|---|---|---|---|---|---|
| Washington | King | Seattle |   US 10 / US 99 | Western end of US 99 concurrency; western terminus | ||
| Snohomish | Everett | US 99 | Eastern end of US 99 concurrency | |||
| Chelan | Peshastin |   US 97 / PSH 2 | Western end of US 97 and PSH 2 concurrency | |||
| Wenatchee | US 97 | Eastern end of US 97 concurrency | ||||
| Spokane | Spokane |   US 10 / US 395 / US 195 / PSH 2 | Western end of US 195 concurrency; eastern end of PSH 2 concurrency | |||
| Pend Oreille | Newport |  PSH 6 | PSH 6 became State Route 20 in 1964[8] | |||
| Idaho | Bonner | Sandpoint |  US 95 / US 195 | Eastern end of US 195 concurrency; eastern terminus of US 195 | ||
| Montana | Sanders | Plains |  MT 28 | |||
| Lake | Ravalli |  US 93 | Western end of US 93 concurrency | |||
| Missoula | Wye | US 10 / US 93 | Eastern terminus; Eastern end of US 93 concurrency | |||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
| ||||||
1947 rerouting
edit| State | County | Location | mi | km | Destinations | Notes |
|---|---|---|---|---|---|---|
| Idaho | Kootenai | Coeur d’Alene | I-90 / US 10 | Southern end of US 95 concurrency; western terminus | ||
| Bonner | Sandpoint |   US 95 / US 2 | Northern end of US 95 concurrency | |||
| Montana | Sanders | Plains | MT 28 | |||
| Lake | Ravalli |  US 93 | Western end of US 93 concurrency | |||
| Missoula | Wye | I-90 / US 10 / US 93[9] | Eastern terminus; eastern end of US 93 concurrency | |||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
| ||||||
See also
edit
Notes
edit- ^ The length after the 1947 reroute was 223 miles (359 km).
References
edit- ^ State Farm Insurance Companies Travel Bureau (1944). "State Farm Road Map: United States" (Map). State Farm Road Atlas United States Canada Mexico. 1:8,680,000. Chicago: Rand McNally. pp. 16–17. Retrieved September 6, 2020 – via David Rumsey Map Collection.
- ^ Weingroff, Richard (June 27, 2017). "U.S. 2: Houlton, Maine, to Everett, Washington". Highway History. Federal Highway Administration. Retrieved September 6, 2020.
- ^ Idaho Department of Highways; Rand McNally & Co. (1967). Official Highway Map of Idaho (Map). c. 1:1,425,600. Boise: Idaho Department of Highways. Retrieved September 6, 2020 – via Flickr.
- ^ Washington State Highway Commission (1939). Highways of the State of Washington (DJVU) (Map). Washington State Highway Commission. Retrieved November 2, 2020.
- ^ a b "Get Maps". ngmdb.usgs.gov. USGS Topoview. Archived from the original on July 9, 2017. Retrieved June 1, 2023.
- ^ Shell Oil Company; H.M. Gousha Company (1951). Shell Highway Map of Western United States (Map). 1:4,752,000. Chicago: Shell Oil Company. Retrieved April 14, 2021.
- ^ "New Map Changes Route 20". The Havre Daily News. October 18, 1967. p. 4. Retrieved November 9, 2020 – via Newspapers.com.
The ultimate goal of the highway association, Belding said, is federal designation.
- ^ Prahl, C. G. (December 1, 1965). "Identification of State Highways" (PDF). Washington State Highway Commission. Retrieved October 23, 2020.
- ^ Montana State Highway Commission; Rand McNally and Co. (1959). Map of the Montana State Highway System (PDF) (Map). Helena: Montana State Highway Commission. Retrieved October 30, 2020.