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*{{Jct|country=USA|I|29}} in [[Council Bluffs, Iowa| Council Bluffs, IA]]
*{{Jct|country=USA|I|35}} from [[West Des Moines, Iowa|West Des Moines]] to [[Ankeny, Iowa|Ankeny, IA]]
*{{Jct|country=USA|I|55}} in [[
*{{Jct|country=USA|I|65}} in [[Gary, Indiana|Gary, IN]]
*{{Jct|country=USA|I|94}} in [[Lake Station, Indiana|Lake Station, IN]]
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*{{Jct|country=USA|I|81}} in [[Drums, Pennsylvania|Drums, PA]]
| direction_b = East
| terminus_b = {{Jct|
| states = [[California]], [[Nevada]], [[Utah]], [[Wyoming]], [[Nebraska]], [[Iowa]], [[Illinois]], [[Indiana]], [[Ohio]], [[Pennsylvania]], [[New Jersey]]
}}
'''Interstate 80''' ('''I-80''') is an east–west transcontinental [[freeway]] that crosses the United States from
I-80 is the Interstate Highway that most closely approximates the route of the historic [[Lincoln Highway]], the first road across the United States. The highway roughly traces other historically significant travel routes in the [[Western United States]]: the [[Oregon Trail]] across [[Wyoming]] and [[Nebraska]], the [[California Trail]] across most of [[Nevada]] and [[California]], the first transcontinental [[airmail]] route, and the route of the [[first transcontinental railroad]], except for the vicinity of the [[Great Salt Lake]]. From near Chicago east to near [[Youngstown, Ohio]], I-80 is a [[toll road]], containing most of both the [[Indiana Toll Road]] and the [[Ohio Turnpike]]. I-80 [[concurrency (road)|runs concurrently]] with I-90 from near [[Portage, Indiana]], to [[Elyria, Ohio]]. In [[Pennsylvania]], I-80 is known as the [[Interstate 80 in Pennsylvania|Keystone Shortway]], a non-tolled freeway that crosses rural north-central portions of the state on the way to [[New Jersey]] and New York City.
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In [[Clearfield County, Pennsylvania|Clearfield County]], I-80 reaches its highest elevation east of the Mississippi River, {{convert|2250|ft|m}}, although other Interstate Highways east of the Mississippi, including [[Interstate 26|I-26]] in North Carolina and Tennessee, reach higher elevations.
In 2007, the [[Pennsylvania Turnpike Commission]] (PTC), combined with state legislature Act No. 44, initiated plans to enact a tolling system on the entire span of I-80 throughout the commonwealth of Pennsylvania. On October 15, 2007, the [[Pennsylvania Department of Transportation]] (PennDOT) and the PTC signed a 50-year lease agreement, which would allow the PTC to maintain and, eventually, toll I-80.<ref name=Inquirer>{{cite web |last = Nussbaum |first = Paul |title = I-80 toll plans moving forward |work = [[The Philadelphia Inquirer]] |date = October 17, 2007 |url = http://www.philly.com/philly/news/homepage/10595797.html }}{{dead link|date=June 2016|bot=medic}}{{cbignore|bot=medic}}</ref> However, the application for a toll was rejected by the [[Federal Highway Administration]] (FHWA).<ref>{{cite press release |author = Federal Highway Administration Public Affairs |url =
===New Jersey===
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==History==
I-80 was included in the original plan for the [[Interstate Highway System]] as approved in 1956. The highway was built in segments, with the final piece of I-80 completed in 1986 on the western edge of [[Salt Lake City]]. This piece was coincidentally dedicated close to the 30th birthday of the Interstate Highway System, which was noted at the dedication and considered to be a milestone in the history of highway construction in the United States.<ref name=highwayhistory>{{cite journal |first = Richard |last = Weingroff |date = Fall 1986 |url =
===Geological study===
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