Idaho State Highway 78

State Highway 78 marker

State Highway 78
Route information
Maintained by ITD
Length: 99.720 mi[1] (160.484 km)
Major junctions
West end: SH-55 in Marsing
 

SH-45
SH-167

SH-51
East end: I-84 Business Loop in Hammett
Location
Counties: Owyhee, Elmore
Highway system

State Highways in Idaho

SH-77SH-79

State Highway 78 (SH-78) is a state highway in Idaho from SH-55 in Marsing to I-84 Business Loop in Hammett

Route description

SH-78 starts at the intersection with SH-55 in Marsing and provides access to sites south of the Snake River from there to Bruneau and a few along the north side via SH-167 from Grand View. SH-78 provides access to Bruneau Dunes State Park and itself crosses the Snake into Elmore County before reaching its eastern terminus at Hammett.[1]

History

The basic route of today's SH-78 from Marsing to Bruneau was in place as early as the mid-1930s, mostly as unimproved roads with a few all-weather gravel segments near Bruneau, Grand View and north of Murphy (a segment originally part of SH-45), and some paved segments near Marsing as of the 1937 map.[2]

Major junctions

CountyLocationmi[1]kmDestinationsNotes
OwyheeMarsing0.0000.000 SH-55 Marsing, Nampa, Boise, EagleUS-95 is about 2 miles (3.2 km) south on SH-55
19.77531.825 SH-45 north Nampa
Murphy34.10554.887Silver City RoadNational historic mining district and former Owyhee County seat about 25 miles (40 km) south
Grand View59.78296.210 SH-167 north Mountain Home AFB, Mountain HomeAccess to Simplot feed lot, USAF Recreation Area at C. J. Strike Dam, Simco Road
76.004122.317 SH-51 south Grasmere, ElkoSouthern end of SH-51 overlap
Bruneau82.680133.061 SH-51 north Mountain HomeNorthern end of SH-51 overlap
84.360135.764Bruneau Dunes State Parkprotected sand dunes
Snake River94.664152.347Snake River Bridge
Owyhee–Elmore county line
ElmoreHammett98.640–
99.720
158.746–
160.484
I-84 Business Loop Mountain Home, Boise, Twin FallsOverlap with I-84 Bus.
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

KML is from Wikidata
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