Interstate 184

Interstate 184
Route information
Maintained by ITD
Length:	3.62 mi (5.83 km)
Existed:	1980 (completed 1990) – present
Major junctions
West end:	I-84 in Boise
East end:	US-20 / US-26 in Boise
Highway system
Auxiliary route of the Interstate Highway System Main • Auxiliary • Business State Highways in Idaho ← SH-162 SH-200 →

Interstate 184 (I-184) is a short Interstate Highway spur route of Interstate 84 located in Idaho. I-184 connects I-84 travelers to downtown Boise. The western terminus of I-184 is with I-84; the eastern terminus 13th Street in downtown Boise, where I-184 empties eastbound traffic onto Myrtle Street and receives westbound traffic from Front Street. The Front/Myrtle couplet passes just south of the heart of downtown Boise and connects to Broadway Avenue 1/4 mile north of Boise State University. Between Chinden Boulevard and its eastern terminus I-184 is co-signed with U.S. Highway 20 and U.S. Highway 26.

History

Until 1980, the freeway was known on paper as Interstate 180N, when Interstate 84 was known as Interstate 80N. This was the only signed suffixed auxiliary Interstate route in the nation, though it was not upgraded to Interstate standards until after the parent route was renamed. Other suffixed routes around the country either were too short to merit an auxiliary route or used the unsuffixed route number for its auxiliary routes. This was illustrated by Interstate 80S in Pennsylvania, whose auxiliary routes were I-180, I-280, I-480, and I-680 respectively.

When Interstate 80N became Interstate 84, the road became Business Loop I-84 through Boise. The current I-184 designation was implemented when the construction upgrading the route to Interstate standards was completed in 1989. [1]

Interstate 184 is the only three-digit interstate route in Idaho.

Exit list

The entire route is in Boise, Ada County.

Mile	#	Destinations	Notes
0.00		I-84 west – Nampa, Ontario	Westbound exit and eastbound entrance
0.00	0	I-84 east – Twin Falls	Westbound exit and eastbound entrance
1.08	1A	Franklin Road
1.33	1B	Cole Road	Westbound exit only
2.54	2	Curtis Road
2.81- 3.09	3	Fairview Avenue	No westbound exit
3.59- 3.81		US-20 west / US-26 west – Garden City, Western Idaho Fairgrounds	East end of I-184; westbound exit and eastbound entrance
4.29		River Street	Eastbound exit only
4.75		US-20 east / US-26 east	Eastbound exit and westbound entrance

See also

• Interstate 84