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
Counties:	Bannock
Highway system
State Highways in Idaho ← SH-39 SH-41 →

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 at its western terminus, an interchange with I-15

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

SH-40 traveling west through rural Bannock County towards I-15

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

Route map: Bing / Google

1. Milepost Log: State Highway 40, Idaho Transportation Department, August 30, 2011, retrieved February 17, 2013
2. Google (February 28, 2011). "State Highway 40" (Map). Google Maps. Google. Retrieved February 28, 2011.
3. "Feature Detail Report for: Downey", Geographic Names Information System, United States Geological Survey, June 21, 1979, retrieved February 17, 2013
4. Highway Data Quest, Idaho Transportation Department, August 3, 2011, retrieved February 17, 2013

External links

• Idaho Highways: U.S. Highway 26 to Idaho Highway 50