Interstate 505 Oregon
Interstate 505, the Industrial Freeway, was a planned 3.17-mile spur from I-405 along the U.S. 30 corridor in northwest Portland. The Industrial Freeway was conceptualized as early as 1959 and 1963. AASHTO approved the I-505 designation on June 23, 1969 and the Interstate highway was proposed in 1971 as a 1.3-mile long facility. Controversy involving the construction of I-505 ensued. A lawsuit demanding an environmental study was presented to the U.S. District Court in 1971, and it was debated through the rest of the decade.
Interstate 505 was formally withdrawn from Oregon’s Interstate Highway System in December 1979. The lone segment built was the approach ramps to Interstate 405 and the Fremont Bridge at the east end. These were incorporated into a reroute of U.S. 30.1
East End – Portland, OR
West End – Portland, OR
Mileage – 3.17
Cities – Portland
- Junctions –
ODOT Hwy #92 / Lower Columbia River Hwy (US 30) Annual Average Daily Traffic (AADT)
|Milepost||Vehicles per day|
According to Interstate 50th Anniversary: The Story of Oregon's Interstates, the Interstate 505 freeway spur was planned to open up the industrial areas along Yeon Avenue; the freeway would have been routed on or along this section of U.S. 30. It would have extended from Interstate 405 in Downtown Portland to U.S. 30 Bypass where U.S. 30 changes into St. Helens Road. The course would have traveled through a considerable number of residential buildings and along the fringe of Forest Park. These factors ultimately caused Interstate 505 to join in Oregon's Great Freeway Kill Off in the mid-1970s.2
The state of Oregon redirected federal Interstate dollars allocated for I-505 for an array of projects. These included funds for completing Interstate 205, Portland area highway improvements on U.S. 26 (Sunset Highway), Oregon 212, and Oregon 217 and other roads, and construction of mass transportation systems including the “Banfield Transitway Project”.
East End / Fremont Bridge – Portland, Oregon
West End of Freeway Spur (N.W. Yeon Ave) at Vaughn St – Portland, Oregon
Planned West End (N.W. Yeon Ave) at / St. Johns Bridge – Portland, Oregon
- Interstate 50th Anniversary: The Story of Oregon’s Interstates.
- Chris Elbert, email: “Re: NW Interstate Updates at Interstate-guide.com.” March 16, 2005.
Page updated June 23, 2018.