State Highway 45 marker

State Highway 45

SH-45 highlighted in red
Route information
Maintained by ITD
Length17.839 mi[1] (28.709 km)
Major junctions
South end SH-78 near Walters Ferry
North end I-84 BL in Nampa
Location
CountryUnited States
StateIdaho
CountiesOwyhee, Canyon
Highway system
  • Idaho State Highway System
← SH-44→ SH-46

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.

Route description

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]

History

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]

Major intersections

CountyLocationmi[1]kmDestinationsNotes
Owyhee​0.0000.000 SH-78 – Murphy, Marsing
​0.3660.589
 SH-45 Conn.
Snake River0.688–
0.819		1.107–
1.318		New Cleo's Ferry Bridge
CanyonNampa17.83928.709 I-84 BL (2nd Street, 11th Avenue) – Caldwell, Boise
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Connector route

Connector plate.svg

State Highway 45 Connector marker

State Highway 45 Connector

LocationNear the Snake River
Length0.250 mi[1] (402 m)

State Highway 45 Connector (SH-45 Conn.) is a short route connecting SH-78 and SH-45.[1]

References

Template:Attached KML/Idaho State Highway 45
KML is from Wikidata
  1. 1 2 3 4 5 "Milepoint Log – State Highway System: SH-45" (PDF). Idaho Transportation Department. January 26, 2016. Retrieved February 12, 2023.
  2. ↑ Google (August 3, 2012). "Idaho State Highway 45" (Map). Google Maps. Google. Retrieved August 3, 2012.
  3. 1 2 Schwedelson, Paul (August 24, 2021). "City of Nampa looking to reroute Highway 45 away from downtown". The Idaho Press. Retrieved February 12, 2023.
  4. ↑ 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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