Interstate 82
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Template:Infobox Interstate Interstate 82 (abbreviated I-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 Interstate 84 in Hermiston, Oregon. (Map)
Contents |
Length
| Miles | km | state | |
| 132.57 | 213.35 | Washington | |
| 10 | 16.1 | Oregon | |
| 142.57 | 229.44 | Total | |
Major cities
Bolded cities are officially-designated control cities for signs.
Intersections with other interstates
Spur Routes
Notes
I-82 serves two major purposes:
- Long haul/long trip
- A link between Seattle, Washington and inland western cities such Boise, Idaho, Salt Lake City, Utah, and Denver, Colorado.
- Short trip traffic accounts for the vast majority of the actual traffic it carries:
- I-82 serves at a local connector between cities along the Yakima River.
- Between Ellensburg, WA and Yakima, WA
- Between Yakima, WA and lower Yakima Valley cities such as Toppenish, WA and Sunnyside, WA
- Continuing on to the Tri-Cities area (Kennewick, WA, Richland, WA, and Pasco, WA) and the Hanford Nuclear Reservation
I-82 crosses Selah Creek, just north of Selah, WA over the Fred G. Redmon Bridge. At the time it was constructed in 1971, the twin-arch Fred G. Redmon Bridge was the longest concrete arch bridge in North America. Together the two arches form the highest bridge in the state of Washington. The bridge is 1,337 feet long, and rises 325 feet above the canyon floor. The arch spans (excluding approach spans) are 549 feet long.
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 least one unlit exit, the "Military Training Area" just south of Ellensburg.
In 1999, a plan surfaced to extend Interstate 82 further south in Oregon. Three major routes were proposed:
- Madras Route: "From Umatilla through Heppner, Condon, Fossil and Antelope to Madras, where the interstate would replace Highway 97 south through Bend to the California border."
- Prineville Route: "From Umatilla through Heppner, Hardman, Spray, Prineville, Powell Butte to Highway 97 near Bend, then continue south to the border."
- Highway 395 Route: "From Umatilla through John Day, Burns and Lakeview," presumably to the California border and beyond. [1]
If the highway ever will be extended, it most likely will be renumbered to a route number that will reflect its north-south status, such as Interstate 7 or Interstate 9 (the number not chosen for the upgrade of California State Highway 99).
I-82's location is a violation of the Interstate system's numbering rules, as it's located north of I-84. The original designation for I-84 was I-80N, which was decommissioned (along with most other suffixed routes) around 1980. Some road fans suggest swapping the I-82 designation with the western I-88, which connects the Quad Cities to Chicago.
| Template:Ed rightMain Interstate Highways (major in pink) | Image:I-blank.svg | ||||||||||||||
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| 4 | 5 | 8 | 10 | 12 | 15 | 16 | 17 | 19 | 20 | 22 | 24 | 25 | 26 | 27 | 29 |
| 30 | 35 | 37 | 39 | 40 | 43 | 44 | 45 | 49 | 55 | 57 | 59 | 64 | 65 | 66 | 68 |
| 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 (W) | 76 (E) | 77 | 78 | 79 | 80 | 81 | ||
| 82 | 83 | 84 (W) | 84 (E) | 85 | 86 (W) | 86 (E) | 87 | 88 (W) | 88 (E) | ||||||
| 89 | 90 | 91 | 93 | 94 | 95 | 96 | 97 | 99 | (238) | H-1 | H-2 | H-3 | |||
| Unsigned | A-1 | A-2 | A-3 | A-4 | PRI-1 | PRI-2 | PRI-3 | ||||||||
| Lists | Main - Auxiliary - Suffixed - Business - Proposed - Unsigned Gaps - Intrastate - Interstate standards | ||||||||||||||
