Idaho State Highway 40
 State Highway 40 | ||||
|---|---|---|---|---|
| Route information | ||||
| Maintained by ITD | ||||
| Length | 2.737 mi[1] (4.405 km) | |||
| Major junctions | ||||
| West end |  I-15 near Downey | |||
| East end |  US 91 in Downey | |||
| Location | ||||
| Country | United States | |||
| State | Idaho | |||
| Counties | Bannock | |||
| Highway system | ||||
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State Highway 40 (SH-40) is a 2.737-mile-long (4.405 km) state highway in the U.S. state of Idaho, serving the city of Downey in Bannock County. The highway travels due east between an interchange with Interstate 15 (I-15) and an intersection with U.S. Route 91 (US-91) in Downey.
Route description
SH-40 begins at a diamond interchange with I-15, located between Malad City and Pocatello, in rural Bannock County. The highway, known locally as Woodland Road, travels due east towards Downey and passes an Idaho Transportation Department maintenance yard before it enters the city of Downey. SH-40 ends at an intersection with US-91 within the city limits of Downey.[1][2][3]
Every year, the Idaho Transportation Department (ITD) conducts a series of surveys on its highways in the state to measure traffic volume. This is expressed in terms of average annual daily traffic (AADT), which is a measure of traffic volume for any average day of the year. In 2011, ITD calculated that 752 vehicles used the highway between I-15 and US-91.[4]
Major intersections
The entire route is in Bannock County.
| Location | mi[1] | km | Destinations | Notes | |
|---|---|---|---|---|---|
| | 0.000 | 0.000 | I-15 – Malad, Salt Lake, Pocatello | Western terminus, interchange | |
| Downey | 2.737 | 4.405 | US 91 | Eastern terminus | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
References
- ^ a b c Milepost Log: State Highway 40, Idaho Transportation Department, August 30, 2011, retrieved February 17, 2013
- ^ "State Highway 40" (Map). Google Maps. Retrieved February 28, 2011.
- ^ "Feature Detail Report for: Downey", Geographic Names Information System, United States Geological Survey, June 21, 1979, retrieved February 17, 2013
- ^ Highway Data Quest, Idaho Transportation Department, August 3, 2011, archived from the original on September 19, 2012, retrieved February 17, 2013
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