Idaho_State_Highway_45
Idaho State Highway 45
State highway in Idaho
State Highway 45 (SH-45) is a 17.985-mile-long (28.944 km) state highway in Idaho. It runs from SH-78 to Interstate 84 Business (I-84 Bus.) in Nampa.
SH-45 highlighted in red | ||||
| Route information | ||||
| Maintained by ITD | ||||
| Length | 17.839 mi[1] (28.709 km) | |||
| Major junctions | ||||
| South end |  SH-78 near Walters Ferry | |||
| North end |  I-84 BL in Nampa | |||
| Location | ||||
| Country | United States | |||
| State | Idaho | |||
| Counties | Owyhee, Canyon | |||
| Highway system | ||||
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SH-45 begins at an intersection with SH-78 before crossing the Snake River and heading northeast. The highway continues north into the city of Nampa as 12th Avenue Road, passing by Mercy Medical Center and Northwest Nazarene University. Then, SH-45 turns northeast on 12th Avenue before forming a one-way couplet with 11th Avenue before ending at 2nd Street South.[1][2] The highway is a major freight corridor.[3]
In 2011, the Nampa Development Corporation requested a realignment of SH-45 to redirect freight traffic away from downtown Nampa. The city government began studying a realignment in 2021 that would use one of several existing roads that lead to I-84 from the south side of downtown Nampa.[3][4]
| County | Location | mi[1] | km | Destinations | Notes |
|---|---|---|---|---|---|
| Owyhee | | 0.000 | 0.000 | SH-78 – Murphy, Marsing | |
| | 0.366 | 0.589 |   SH-45 Conn. | ||
| Snake River | 0.688– 0.819 | 1.107– 1.318 | New Cleo's Ferry Bridge | ||
| Canyon | Nampa | 17.839 | 28.709 | I-84 BL (2nd Street, 11th Avenue) – Caldwell, Boise | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
State Highway 45 Connector | |
|---|---|
| Location | Near the Snake River |
| Length | 0.250 mi[1] (402 m) |
State Highway 45 Connector (SH-45 Conn.) is a short route connecting SH-78 and SH-45.[1]
- "Milepoint Log – State Highway System: SH-45" (PDF). Idaho Transportation Department. January 26, 2016. Retrieved February 12, 2023.
- Google (August 3, 2012). "Idaho State Highway 45" (Map). Google Maps. Google. Retrieved August 3, 2012.
- Schwedelson, Paul (August 24, 2021). "City of Nampa looking to reroute Highway 45 away from downtown". The Idaho Press. Retrieved February 12, 2023.
- Schwedelson, Paul (August 27, 2021). "Nampa residents weigh in on Highway 45 reroute study". The Idaho Press. Retrieved February 12, 2023.
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