Interstate 405 (Oregon)

I-405
I-405
Stadium Freeway No. 61
Route information
	Auxiliary route of I-5
Length	4.25 mi (6.84 km)
Existed	1958–present
NHS	Entire route
Major junctions
South end	I-5 in Portland
	US 26 in Portland; US 30 in Portland
North end	I-5 / US 30 in Portland
Location
Country	United States
State	Oregon
Counties	Multnomah
Highway system
	Interstate Highway System; Main; Auxiliary; Suffixed; Business; Future; Oregon Highways; Interstate; US; State; Named; Scenic;

Interstate 405 (I-405), also known as the Stadium Freeway No. 61, is a short north–south Interstate Highway in Portland, Oregon. It forms a loop that travels around the west side of Downtown Portland.

References

↑ "Correspondence, A. E. Johnson and W. C. Williams". American Association of State Highway Officials. November 10, 1958. pp. 2–3. Retrieved October 8, 2021 – via AASHTO Route Numbering Archive.
↑ "2020 Cross Reference Table of Highway Route Number to State Highway Number" (PDF). Oregon Department of Transportation. 2020. p. 1. Retrieved October 28, 2021.

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[AASHTO-1958-1] "Correspondence, A. E. Johnson and W. C. Williams". American Association of State Highway Officials. November 10, 1958. pp. 2–3. Retrieved October 8, 2021 – via AASHTO Route Numbering Archive.

[ODOT-CrossRef-2] "2020 Cross Reference Table of Highway Route Number to State Highway Number" (PDF). Oregon Department of Transportation. 2020. p. 1. Retrieved October 28, 2021.