Idaho State Highway 78
SH-78 highlighted in red  | ||||
| Route information | ||||
| Maintained by ITD | ||||
| Length | 99.720 mi (160.484 km) | |||
| Major junctions | ||||
| West end | SH-55 in Marsing | |||
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| East end | I-84 BL in Hammett | |||
| Location | ||||
| Country | United States | |||
| State | Idaho | |||
| Counties | Owyhee, Elmore | |||
| Highway system | ||||
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State Highway 78 (SH-78) is a state highway in Idaho from SH-55 in Marsing to I-84 Business Loop in Hammett