Idaho State Highway 37

State Highway 37
Rockland Highway
SH-37 highlighted in red
Route information
Maintained by IDT
Length	31.231 mi[1] (50.261 km)
Major junctions
South end	Oneida County line
North end	I-86 (Exit 36)
Location
Counties	Power
Highway system
State Highways in Idaho Interstate US State ← SH-36 → SH-38

State Highway 37 (SH-37) is a state highway in Power County in southern Idaho, United States that spans 31.231 miles (50.261 km) north-south from the Oneida–Power county line to Interstate 86 (I-86).^[1][2]

Route description[]

The SH-37 begins at the Oneida County line on the Rockland Highway, just southwest of Buck Peak. (From the southern terminus of SH-37 the Rockland Highway continues south to Holbrook and the western terminus of SH-38.) The route heads northwest briefly before turning north to pass through the unincorporated community of Roy. It then continues north through farmland and passes through the town of Rockland before ending at a diamond interchange with I-86 (Exit 36), about 1 mile (1.6 km) south of the Snake River, about 2.3 miles (3.7 km) northeast of Neeley, and about 6 miles (9.7 km) southwest of American Falls.^[1][2]

History[]

By 1927 the SH-37 designation had been assigned to a route south east of Coeur d'Alene in the northern part of the state. (By 1927 the north-south route through Malad City was designated as SH-21, but by 1937 it had been changed to SH-36.)^[3]

Between 1927 and 1937, the SH-37 designation was assigned to the highway which had been, by 1927, designated as SH-33. This highway followed the current routing of SH-37 from a point southwest of American Falls (on what was then US-30N, but now I-86) south through Rockland and on through Roy, but then continued on to Holbrook, and then finally heading east to Malad City (on what is now SH-38).^[4] Also between 1927 and 1937, the SH-38 designation had been applied to a highway (which, by 1927, had been previously designated as SH-32) that began in Roy and headed east and then northeast to Arbon, north to Pauline (along what is now the Arbon Highway) and then (along what is now the Bannock Highway) north to , and on to terminate in at the former routing of US-91 in .^[3] By 1956, the southern terminus of SH-38 had changed from SH-37 in Roy to SH-37 east of Holbrook (via to Arbon)^[5] Eventually, the routing of SH-38 was changed to its current route, with the roads through Buist, Arbon, and Crystal to Portneuf being entirely removed from the state highway system; as well as the section that was previously part of SH-37 between Holbrook and the Power County-Oneida County line.

Major intersections[]

The entire route is in Power County. ^[2]

Location[2]	mi[1]	km	Destinations[2]	Notes
​	0.000	0.000	Rockland Highway south	Southern terminus; to SH-38
​	31.121	50.084	I-86 BL east / I-86 / US 30 – American Falls, Twin Falls, Pocatello, Aberdeen	Northern terminus; I-86 exit 36; highway continues as I-86 BL east
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Route transition

See also[]

• List of state highways in Idaho
• List of highways numbered 37

References[]

External links[]

Wikimedia Commons has media related to Idaho State Highway 37.

Route map:

• Idaho Transportation Department Route 37 Milepoint Log
• Idaho Transportation Department Reports on ID 37