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Interstate 80 (I-80) is the second-longest Interstate Highway in the United Statesmarker (after I-90). It connects downtown San Francisco, Californiamarker, to Teaneck, New Jerseymarker (a suburb of New York Citymarker). I-80 is the interstate that most closely approximates the route of the Lincoln Highway, the first auto trail to cross the country. The highway roughly traces other historically significant travel corridors in the Western United States: the Oregon Trail across Wyomingmarker and Nebraskamarker, the California Trail through most of Nevadamarker and Californiamarker, and except for the vicinity of the Great Salt Lakemarker, the entire route of the First Transcontinental Railroad.

The highway from near Chicagomarker, Illinoismarker, east to near Youngstown, Ohiomarker, is a toll road—the ticketed portion of the Indiana Toll Road and the majority of the Ohio Turnpike. At Youngstown, I-80 leaves the toll road alignment, which continues toward Pittsburghmarker and Philadelphiamarker, in favor of the Keystone Shortway, a shortcut across northern Pennsylvania built as part of a new corridor for I-80. The toll route to Philadelphia, was originally designated as Interstate 80S, but it was renumbered Interstate 76.

I-80 intersects I-90 near Elyria, Ohiomarker, and they share a route west all the way to Portage, Indianamarker, where I-90 splits off but I-80 then runs concurrently with I-94 until the Chicago suburb of South Holland, Illinoismarker. I-80 then runs concurrently with I-294 until Markham, Illinoismarker.

Route description


Interstate 80 begins at an interchange with U.S.Route 101 in San Franciscomarker and heads northeast through Oaklandmarker, Vallejomarker, Sacramentomarker, and the Sierra Nevada mountains before crossing into Nevadamarker.

A portion of the route through Pinole, Californiamarker involved the experimental transplantation of the rare species Santa Cruz tarweed in the right-of-way.


In the state of Nevadamarker, Interstate 80 runs northeast from the Lake Tahoemarker region near Renomarker to Battle Mountainmarker.At Battle Mountain, it turns east to the salt flats of Utah via Elkomarker.In Nevada, I-80 is routed along the Truckeeand Humboldtrivers.

The stretch of I-80 through Nevada is largely desolate and mountainous. Services are limited compared to I-80 in other states.


After crossing Utahmarker's western border, I-80 crosses the desolate Bonneville Salt Flatsmarker west of the Great Salt Lakemarker.The longest stretch between exits on an Interstate Highway is located between Wendovermarker and Knolls, with 37.1 miles (60.1 km) between those exits.This portion of I-80, crossing the Great Salt Desertmarker, is extremely flat and straight, dotted with large warning signs about driver fatigue and drowsiness.

East of the salt flats, I-80 passes through Salt Lake Citymarker, where it merges with I-15 for three miles (5 km) before entering the Wasatch Mountains east of the city.It ascends Parley's Canyon and passes within a few miles of Park City as it follows a route through the mountains towards Wyomingmarker.

The route of the Utah section of I-80 is defined at Utah Code Annotated § 72-4-113(10).


In the state of Wyomingmarker, I-80 reaches its maximum elevation of 8,640 feet (2,633 m) above sea level between Cheyennemarker and Laramie, Wyomingmarker.Farther west in Wyoming, the interstate passes through the dry Red Desertand over the Continental Divide. In a way, the highway crosses the Divide twice, since two ridges of the Rocky Mountains split in Wyoming, forming the Great Divide Basinmarker - from which no surface water escapes.


I-80 enters Nebraska west of Bushnellmarker.The western portion of I-80 in Nebraska runs very close to the state of Coloradomarker, without entering the state; the intersection of Interstate 76 and I-80 is visible from the Colorado-Nebraska state line.From its intersection with I-76 to Grand Islandmarker, I-80 lies in the valley of the South Platte and Platte Rivers.The longest straight stretch of interstate anywhere in the system is the approximately of I-80 occurring between Exit 318 in the Grand Island area and milemarker 390 near Lincolnmarker.Along this length, the road does not vary from an ideally straight line by more than a few yards. After Lincoln, I-80 turns northeast towards Omahamarker.It then crosses the Missouri Rivermarker in Omaha to go into Iowa.

Part of Interstate 80 in Nebraska is marked as a Blue Star Memorial Highway.


In the state of Iowamarker, Interstate 80 runs from the I-80 bridge over the Missouri Rivermarker where it intersects with I-29 and runs east to the Quad Citiesmarker and the Fred Schwengel Memorial Bridgemarker over the Mississippi River.It is the main east-west arterial freeway through south-central Iowa, and the main east-west Interstate in the state.

In Iowa I-80 serves the cities of Council Bluffsmarker, Des Moinesmarker, Iowa Citymarker, and the Iowa portion of the Quad Citiesmarker—including Davenportmarker and Bettendorfmarker.


In the state of Illinoismarker, I-80 runs from the Fred Schwengel Memorial Bridge across the Mississippi River south to an intersection with I-74.It then runs east across north-central Illinois just north of the Illinois River to Jolietmarker.I-80 continues east and joins I-94just before entering Indiana.


In the state of Indianamarker, I-80 runs concurrent with another Interstate Highway for its entire length.It runs with I-94 on the Borman Expressway before joining I-90 to Ohio on the Indiana Toll Road.

The portion of I-80 between La Porte, Indianamarker and Toledo, Ohiomarker runs (with I-90) within ten miles (16 km) of the Michiganmarker state line.From the State Route 9and I-80 intersection, the sign marking the Indiana-Michigan state line is visible. At another point in northern Indiana, I-80 comes within about 200 yards (meters) from the Michigan border.


In the state of Ohiomarker, I-80 enters with I-90 from the Indiana Toll Road and immediately becomes the "James W.Shocknessy Ohio Turnpike", more commonly referred to as simply the Ohio Turnpike. The two Interstates cross rural northwest Ohio and run just south of the metropolitan area of Toledomarker.In Rossford, Ohiomarker it intersects with Interstate 75 in an area known as the Crossroads of America.This intersection is one of the largest intersections of two Interstate Highways in the United Statesmarker.

In Elyria Townshipmarker, just west of Clevelandmarker, I-90 splits from I-80 and runs northeast as a freeway.I-80 runs east-southeast through the southern suburbs of Cleveland and retains the Ohio Turnpike designation. Just northwest of Youngstownmarker, the Ohio Turnpike continues southeast onto Interstate 76, while I-80 runs east to the north of Youngstown, entering Pennsylvania south of Sharon, Pennsylvaniamarker.


In the state of Pennsylvaniamarker, I-80 is the main east-west Interstate-standard highway through central Pennsylvania.It runs from the Ohio state line near Sharonmarker to the Delaware Water Gap Toll Bridgemarker over the Delaware River,and is called the Confair Memorial Highway.

I-80 serves no major metropolitan areas in Pennsylvania directly. A spur from I-80 (I-180) runs to Williamsportmarker, while another (I-380) runs to Scrantonmarker.I-80 intersects I-476 in the Pocono Mountains which connects with Scrantonmarker, Wilkes-Barremarker, and Philadelphiamarker.I-80 intersects I-79 in Western Pennsylvania which connects with Eriemarker (about to the north) and Pittsburghmarker (about to the south).Interstate 80's highest point (east of the Mississippi) is also located in Pennsylvania, near Exit 111 near Penfield, in Clearfield County.

In 2007, the Pennsylvania Turnpike Commission, 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, PennDOTmarker and the Pennsylvania Turnpike Commission signed a 50-year lease agreement, which will allow the Commission to maintain and, eventually, toll I-80.However, such a toll has not been accepted by the Federal Highway Administration.

New Jersey

The portion of 80 that goes through New Jerseymarker is called the Bergen-Passaic Expressway.

I-80 does not go all the way to New York Citymarker via the George Washington Bridgemarker.Its designated end (as per signage and NJDOT documents) is 4.3 miles (6.9 km) short of New York City in Teaneck, New Jerseymarker.There, signs designate the end of I-80 and the beginning of I-95(a part of the New Jersey Turnpike).

That mileage markers beyond the end appear to follow as if they were part of I-80 is a coincidence; they match what would have been the correct mileage markers of I-95had the Somerset Freewaybeen built.

One section of I-80 running from Netcong to Denvillemarker was constructed in 1958.It is one of the oldest sections of Interstate highway in the United Statesmarker.

Auxiliary routes


External links


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