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Interstate 82

Interstate 82 is an interstate highway in the northwestern United States. Its western terminus is at an intersection with Interstate 90 in Ellensburg, Washington; its eastern terminus is at an intersection with the western Interstate 84 in Hermiston, Oregon.

Table of contents
1 Number of Miles
2 Major Cities Along the Route
3 Intersections with other Interstates
4 Spur Routes
5 Notes

Number of Miles


Major Cities Along the Route

Intersections with other Interstates

Spur Routes


I-82 serves two major purposes:

On I-82, exits 88 and 93 are the only interstate exits in the state of Washington still lit with mercury vapor streetlights. The closest possible exception is on I-5, at the 320th St. S. exit in Federal Way, where at the intersection of the northbound offramp and 320th St. there is one lone mercury vapor light. It is not actually on the freeway, though, only on the offramp.

Mercury vapor lights cast a cold, blue light. Most of the Washington interstate system has high pressure sodium lighting, the common yellow streetlight. There are a few areas that have metal halide (clean, white light) as well, but those are growing in number while the use of mercury is shrinking. I-5 north of the Ship Canal Bridge has metal halide. State route 520 just east of 405 has some mercury lighting left over, as does the Valley Freeway (167) north of the SuperMall. Basically everywhere else, the lighting is sodium.

On I-90, exit 93, Elk Heights Road, is the only unlit interchange. There are no unlit interchanges on 5, 405, 705 or 182. 82 has at lest one unlit exit, the "Military Training Area" just south of Ellensburg.