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Interstate 80 in Utah

Interstate 80 marker

Interstate 80
Purple Heart Trail
Route information
Defined by
Maintained by UDOT
Length: 196.35 mi[1] (315.99 km)
Existed: 1956 – present
Major junctions
West end: I‑80 at the Nevada state line
  SR‑201 near Magna
SR‑154 in Salt Lake City
I‑215 in Salt Lake City
I‑15 in Salt Lake City
SR‑201 in Salt Lake City
I‑15 in South Salt Lake
US‑89 in South Salt Lake
I‑215 in Salt Lake City
US‑40 / US‑189 near Park City
I‑84 in Echo
East end: I‑80 / US 189 at the Wyoming state line
Counties: Tooele, Salt Lake, Summit
Highway system
SR‑79 SR‑81

Interstate 80 (I-80) is a part of the Interstate Highway System that runs from San Francisco, California to Teaneck, New Jersey. The portion of the highway in the U.S. state of Utah is 196.35-mile-long (315.99 km), through the northern part of the state. From west to east, I-80 crosses the state line from Nevada in Tooele County and traverses the Bonneville Salt Flats—which are a part of the larger Great Salt Lake Desert. It continues alongside the Wendover Cut-off—the corridor of the former Victory HighwayU.S. Route 40 (US-40) and the Western Pacific Railroad Feather River Route. After passing the Oquirrh Mountains, I-80 enters the Salt Lake Valley and Salt Lake County. A short portion of the freeway is concurrent with I-15 through Downtown Salt Lake City. At the Spaghetti Bowl, I-80 turns east again into the mouth of Parley's Canyon and Summit County, travels through the mountain range and intersects the eastern end of I-84 near Echo Reservoir before turning northwest towards the Wyoming border near Evanston. I-80 was built along the corridor of the Lincoln Highway and the Mormon Trail through the Wasatch Range. The easternmost section also follows the historical routes of the First Transcontinental Railroad and US-30S.

Construction of the controlled-access highway began in the 1950s, and by the late 1970s most of the freeway across the state of Utah had been completed. The four-and-a-half-mile-long (7.2 km) section of I-80 between Utah State Route 68 (SR-68, Redwood Road) and the Salt Lake City International Airport was the last piece of the nearly 2,900-mile-long (4,700 km) freeway to be completed. It was opened on August 22, 1986, and was about 50 miles (80 km) from the site of another cross-country milestone in Utah, the driving of the Golden Spike of the First Transcontinental Railroad at Promontory Summit. Average daily traffic volumes in 2012 ranged between 6,765 vehicles using the freeway at SR-58 and 121,205 vehicles using the freeway at the Spaghetti Bowl in Downtown Salt Lake City. Throughout the state, the highway is also known as the Purple Heart Trail.


  • Route description 1
    • Tooele County 1.1
    • Salt Lake County 1.2
    • Summit County 1.3
  • History 2
    • Earlier roads 2.1
    • Current road 2.2
  • Exit list 3
  • See also 4
  • Notes 5
  • References 6
  • External links 7

Route description

Out of the ten states which I-80 passes through, the 196.34-mile-long (315.98 km) segment in Utah is the fourth shortest. The longest stretch of I-80 in a single state is the 455.32-mile-long (732.77 km) segment in Nebraska.[1] As part of the Interstate Highway System,[2] the entire route is listed on the National Highway System, a system of roads that are important to the nation's economy, defense, and mobility.[3]

Every year, the Utah Department of Transportation (UDOT) conducts a series of surveys on its highways to measure traffic volumes. This measure is expressed in terms of average annual daily traffic (AADT), a measure of traffic volume for any average day of the year. In 2012, UDOT calculated that as few as 6,765 vehicles traveled I-80 at the interchange with SR-58 in Wendover, and as many as 121,205 vehicles used the highway at the Spaghetti Bowl in downtown Salt Lake City.[4] Between seven and 58 percent of the traffic recorded consisted of trucks.[5] These counts are for the portion of the freeway in Utah.

Tooele County

The freeway enters Utah from Nevada in the city of Wendover on the edge of the Bonneville Salt Flats. The cities of West Wendover, Nevada and Wendover are accessible by I-80's only business loop in Utah,[6] whose interchange is just south of Danger Cave.[7][8] The highway closely follows the historical routes of the Wendover Cutoff, the Victory Highway,[9] and of the ex-Western Pacific Railroad's Feather River Route (now part of the Union Pacific Railroad Central Corridor) across the salt flats and the larger Great Salt Lake Desert.[10] The Bonneville Speedway, which is home to many land speed records, is accessible from I-80.[11] In the middle of the salt flats is a concrete sculpture, Metaphor: The Tree of Utah, which stands just off the westbound carriageway of I-80, 30 mi (48 km) east of Wendover.[12]

Bounded on each sides by military training grounds,[13] the I-80 corridor is overflown by commercial airliners traveling west from Salt Lake City International Airport.[14] The freeway veers north around the Cedar Mountains in a small gap between them and the Lakeside Mountains. Further east, the highway passes the Stansbury Mountains, which are part of the Wasatch-Cache National Forest.[15] After the mountain ranges, the freeway arrives at the southern shore of the Great Salt Lake and closely follows the shore towards the western suburbs of Salt Lake City.[16] However, the historical routes from which the route of I-80 was derived were routed further from the lake, passing through the towns of Grantsville and Tooele before crossing a bottleneck between the Oquirrh Mountains and Stansbury Island in the Great Salt Lake. These communities are now served by SR-138 and SR-36 respectively.[7]

Salt Lake County

While traversing the neck, views can be had from I-80 of the Lake and Antelope Island. After passing the neck, the road forks, with I-80 proceeding towards the north end of Salt Lake City and SR-201 proceeding towards the south end.[17] Historically, this intersection was the separation of US-40 and US-50. After the intersection, the freeway corridor is again bottlenecked with the Great Salt Lake to the north and the Kennecott Copper smelter and tailings pond to the south. The Kennecott's Bingham Canyon Mine, which was once considered to be the largest open-pit copper mine, can be seen in the distance.[18] The 1,215-foot-tall (370 m) Kennecott Smokestackis one of the tallest freestanding structures in the United States.[19] Along this portion, the freeway passes the historical site of the Saltair Resort.[7]

The freeway enters the Salt Lake Valley on the former alignment of North Temple Street until it passes the Salt Lake City International Airport, where the freeway veers slightly south and leaves the North Temple Street corridor which leads to Temple Square in downtown Salt Lake City. The Green Line of the Utah Transit Authority (UTA) TRAX system briefly parallels I-80 before traveling down the center of North Temple Street. I-80 becomes concurrent with I-15 after interchanges with SR-58 and 600 South and continues south for about three miles (4.8 km), passing along the western and southern edges of downtown Salt Lake City. The southern interchange with I-15, which also includes SR-201 (21st South Freeway) and marks the end of the concurrency, is known as the Spaghetti Bowl,.[20] In the southwestern corner of the Spaghetti Bowl is another portion of the UTA TRAX Green Line as it travels towards West Valley City. After separating from I-15, the freeway continues easterly through South Salt Lake, loosely following an alignment just south of 2100 South and the UTA S Line streetcar through the Sugar House neighborhood and past Sugar House Park—once the home of the Sugar House Prison[21] towards the clockwise terminus of the I-215 270° belt route around Salt Lake. It continues through Parley's Canyon,[7] where the freeway joins the historical route of the Lincoln Highway.[22] Between the mouth of the canyon and the Summit county line, the route re-enters the Wasatch National Forest.[17]

Summit County

Parley's Canyon carries I-80 up the western slope of the Wasatch Front as a six-lane freeway,[7] cresting the mountains at an elevation of 7,028 feet (2,142 m) at Parley's Summit.[23] Both the canyon and summit were named for Parley P. Pratt, an early settler to the Salt Lake Valley and an early Mormon leader who was asked to survey a new route across the mountains to replace the route through Emigration Canyon. Between 1848 and 1851, Pratt surveyed, completed, and operated the Golden Pass toll road through the canyon that today bears his name. Pratt had unsuccessfully solicited for $800 (equivalent to $361 thousand in 2011)[24] to build the road, and sold it for $1,500 (equivalent to $669 thousand in 2011).[24][25] On and off ramps for the Wyoming port-of-entry are located just within Utah.[7] In January 2014, UDOT introduced variable speed limits to I-80 in Parley's Canyon, allowing a speed limit between 35 mph (56 km/h) up to the normal 65 mph (105 km/h) depending on weather or traffic conditions.[26]

View along I-80 eastbound in Parley's Canyon

Beyond Parley's summit lies Park City, a mining town today better known for its many ski resorts.[27][28] The Historic Union Pacific Rail Trail State Park travels in the median between carriageways of I-80 before paralleling the highway until the southern end of Echo Reservoir.[29] The freeway turns north upon reaching the Rockport Reservoir at Wanship[30] following the tributaries of the Weber River toward Echo Reservoir and dam. Upon reaching Echo Canyon and the junction with the eastern terminus of the western section of I-84, the freeway follows the canyon east until it reaches the Wyoming state line near Evanston. I-80 forms the northeastern border between Rich and Summit Counties.[31]

The portion through Echo Canyon follows the historical routes of the Mormon Trail, US-30S, and the First Transcontinental Railroad.[32] A rest area in the canyon just east of the junction with I-84 features signs pointing out features that were obstacles for both the Mormon pioneers and the railroad construction workers, including Pulpit Rock,[33] which was partially demolished when the I-80 was built through the canyon.[34]


I-80 eastbound across the Bonneville Salt Flats.

Earlier roads

I-80 follows the routes of two major auto trails through the state. In western Utah, I-80 follows the historical route of the Victory Highway from Wendover at the Nevada state line to the junction of US-40 near Park City. Throughout Utah, I-80 is signed as the modern route of the Lincoln Highway—except through Salt Lake City, where the Lincoln Highway is routed along State Route 201 and Parley's Way. The route of the Lincoln Highway across Utah was generally derived from the route of the Pony Express and the Central Overland Route. However, much of the original route of the Lincoln Highway west of Salt Lake City is inaccessible. The original route of the Lincoln Highway proceeded southwest from Tooele towards Ely, Nevada. This area is now used for military bases, such as the Dugway Proving Ground and Tooele Army Depot. The area was closed to the public when these bases were established. I-80 and US-93 are the modern signing of the Lincoln Highway between those two cities. East of Salt Lake City, I-80 closely parallels the original route of the Lincoln Highway.[35][36]

In 1926, much of the route covered by I-80, including Pratt's former toll road from the Nevada state line into Salt Lake City, was signed as US-40 then as US-30 to the Wyoming state line.[37][38] It was also part of the Victory Highway west of Salt Lake and the Lincoln Highway east of Salt Lake at this time. Most of the route had been improved but some stretches of graded road remained.[39] In 1937, parts of the route near Wanship were numbered US-530.[40] In 1950, the highway near Echo was designated US-30S and US-189.[41] By 1959, US-50 Alternate was also routed along the western portion of I-80.[42]

Current road

The first Utah State Route to have the number 80 is now known as SR-92, which was originally numbered SR-80 until the 1977 renumbering of Utah State highways. Previously, the freeway's legislative designation was SR-2.[43]

I-80 passing the Oquirrh Mountains westbound along the shores of the Great Salt Lake

Passage of the Federal Aid Highway Act of 1956 formed the Interstate Highway System,[44] and the I-80 number was first designated to a then-unconstructed controlled-access highway across the state by 1957.[45] I-80 was constructed in segments, starting in the late 1950s. By the late 1970s, the Utah portion of I-80—except for a gap on the western edge of Salt Lake City—was largely complete. A four-and-a-half-mile-long (7.2 km) section between Redwood Road and Salt Lake City International Airport holds the distinction of being the final link of the transcontinental freeway to be completed.[46] As an Interstate Highway, design specifications require a controlled-access highway with no at-grade intersections. This section was dedicated on August 22, 1986, and was the last to be completed to Interstate Highway specifications along the almost 2,900-mile-long (4,700 km) route of I-80 between San Francisco, California and Teaneck, New Jersey.[47] The section was completed close to the thirtieth anniversary 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.[46] It was also noted at the dedication that this was only 50 miles (80 km) south of Promontory Summit, where the golden spike of the United States First Transcontinental Railroad was laid.[48]

The original designation of I-84, which begins at an interchange with I-80 in Echo, was I-80N. This designation was changed to I-84 in 1977 by the American Association of State Highway and Transportation Officials despite objections from the Washington State Department of Transportation and the Idaho Transportation Department, and with the support of UDOT and the Oregon Department of Transportation. The legislative designation for this highway was SR-3 until the 1977 renumbering.[43]

Rebuilding of the first portions of I-80 began in October 1990 with a one-and-two-fifths-mile-long (2.3 km) stretch near Redwood Road in Salt Lake City.[49] By 1991, UDOT estimated that the reconstructin of all federally funded highways in the state would cost up to $4.3 billion (equivalent to $9.08 billion in 2011)[24].[50] The Spaghetti Bowl interchange was first proposed in 1996 to accommodate traffic for the 2002 Winter Olympics being held in the city.[51] Most of the Spaghetti Bowl was open by November 2000; the remainder opened in early 2001.[52] In 2002, the Utah State Legislature named the highway the Purple Heart trail,[53] in honor of wounded war veterans.[54] Additional reconstruction work—which involved replacing most of the bridges along the route, resurfacing and installation of sound barriers—was done on I-80 between the Spaghetti Bowl and Parley's Canyon in 2007 and 2008.[55]

Exit list

County Location Mile[note 1] km Exit Destinations Notes
Tooele Wendover 0.000 0.000 Nevada–Utah state line
I‑80 west continues into Nevada
0.043 0.069 1 To SR‑58 / Aria Boulevard – Wendover Westbound exit and eastbound entrance
1.484 2.388 2 I‑80 Bus. / SR‑58 west – Wendover Westbound entrance is via a U-turn at exit 4
  3.993 6.426 4 Bonneville Speedway Rest and View Area off exit
  9.816 15.797 Rest Area
  41.278 66.431 41 Knolls (Wendover Cut-off) Eastern terminus of the Wendover Cut-off
  48.940 78.761 49 Clive
  53.996 86.898 Grassy Mountain Rest Area
  56.195 90.437 56 Aragonite
  61.837 99.517 62 Military Area, Lakeside
  69.521 111.883 70 Delle
Rowley Junction 76.402 122.957 77 SR‑196 – Rowley, Dugway
  83.358 134.152 84 SR‑138 – Grantsville, Tooele
  88.395 142.258 88 Grantsville
  98.619 158.712 99 SR‑36 – Stansbury, Tooele
Salt Lake   101.544 163.419 102 SR‑201 east (2100 South) – Magna, West Valley City Eastbound exit and westbound entrance
  104.273 167.811 104 SR‑202 / Saltair Drive
Salt Lake City 111.287 179.099 111 7200 West
113.276 182.300 113 5600 West (SR-172)
114.336 184.006 114 Wright Brothers Drive Westbound exit and eastbound entrance
115.374 185.676 115 SR‑154 (Bangerter Highway) – Salt Lake City International Airport Signed as exits 115A (Airport) and 115B (Bangerter Highway) westbound; no westbound exit or eastbound entrance at North Temple
116.488 187.469 115 North Temple – Downtown Salt Lake City, Temple Square Eastbound exit and westbound entrance; former SR-186
117.262 188.715 117 I‑215 – Ogden, Provo
117.862 189.681 118 SR‑68 (Redwood Road)
119.591 192.463 120 I‑15 north – Ogden West end of I-15 overlap; no exit number westbound
307.309 494.566 306 600 South (SR-269 east) – Temple Square Signed as exit 306 westbound
304.646 490.280 305D 900 South (SR-270 east) Westbound exit and eastbound entrance
304.646 490.280 305C 1300 South
South Salt Lake 304.646 490.280 306A SR‑201 west – West Valley Signed as exit 305A eastbound
Part of the Spaghetti Bowl interchange
122.028 196.385 306B I‑15 south – Las Vegas East end of I-15 overlap; no exit number eastbound
Part of the "Spaghetti Bowl" interchange
123.231 198.321 124 US‑89 (State Street)
Salt Lake City 124.125 199.760 125 SR‑71 (700 East)
125.072 201.284 126 1300 East – Sugar House Former SR-181
126.785 204.041 127 2300 East – Holladay, Millcreek Eastbound exit and westbound entrance; former SR-195
127.039 204.449 128 I‑215 south (Belt Route) Eastbound exit and westbound entrance
127.685 205.489 129 SR‑186 west (Foothill Drive) / Parleys Way Former US-40 Alternate
128.619 206.992 130 I‑215 Westbound exit and eastbound entrance
  130.399 209.857 131 Rock Quarry Road No westbound exit — Exit signed only as "Exit 131"
  131.869 212.223 132 Mt. Aire Canyon Road
  133.665 215.113 134 SR‑65 north – East Canyon
  136.113 219.053 137 Lambs Canyon
Summit   139.413 224.363 140 Parley's Summit
  141.815 228.229 141 Jeremy Ranch
  142.847 229.890 View Area
Eastbound exit and entrance
Kimball Junction 144.198 232.064 145 SR‑224 south – Park City
Silver Creek Junction 146.876 236.374 146 US‑40 east (US-189 south) – Heber, Vernal, Provo West end of US-189 overlap
  150.724 242.567 150 Tollgate Promontory
Wanship 154.972 249.403 155 SR‑32 south – Wanship, Kamas
Coalville 162.592 261.666 162 Coalville (SR-280)
  165.005 265.550 View Area
  167.324 269.282 168 I‑84 west – Ogden
  167.781 270.017 169 Echo
  169.505 272.792 Rest Area
  178.703 287.595 178 Emory Westbound exit and eastbound entrance
  184.126 296.322 185 Castle Rock
  187.767 302.182 187 Ranch Exit
  191.690 308.495 191 Wahsatch
  196.680 316.526 Utah–Wyoming state line
I‑80 east continues into Wyoming
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also


  1. ^ I-80 has its own mileposts and exits except for the concurrency with I-15,[56] which uses the mileposts and exits from I-15.[57]


  1. ^ a b Adderly, Kevin (January 19, 2012). "Table 1: Main Routes of the Dwight D. Eisenhower National System Of Interstate and Defense Highways". FHWA Route Log and Finder List.  
  2. ^ Slater, Rodney E. (Spring 1996). "The National Highway System: A Commitment to America's Future". Public Roads 59 (4). Retrieved January 24, 2011. 
  3. ^ Federal Highway Administration (November 18, 2013). National Highway System: Utah (Map). 1:772200. Retrieved December 25, 2013.
  4. ^ Staff (2012) (PDF). Traffic on Utah Highways (Report). Utah Department of Transportation. p. 15. Retrieved December 25, 2013.
  5. ^ Staff (2012) (PDF). Truck Traffic on Utah Highways (Report). Utah Department of Transportation. pp. 14-15. Retrieved December 25, 2013.
  6. ^ Utah Department of Transportation (2005). Tooele County (Map). 1:29040. General Highway Map. p. 5. Retrieved December 26, 2013.
  7. ^ a b c d e f Google Inc. "Interstate 80 in Utah". Google Maps (Map). Cartography by Google, Inc.!data=!1m4!1m3!1d645377!2d-112.4054308!3d40.898671!4m25!3m19!1m4!3m2!3d40.7379883!4d-114.0434828!6e2!1m4!3m2!3d41.2476194!4d-111.0466502!6e2!3m8!1m3!1d2508!2d-111.0477231!3d41.2463207!3m2!1i1366!2i642!4f13.1!5m2!13m1!1e1!7m1!6i1&fid=0. Retrieved December 25, 2013.
  8. ^ Staff. "Danger Cave". Guide to Historical Attractions.  
  9. ^ California-Oregon-Washington Tourist Association (1927). Copyrighted Official Map (Map) (701 ed.).,5435. Retrieved December 26, 2013.
  10. ^ Benchmark Maps (2002). Utah Road and Recreation Atlas (Map). 1:250000 (2002 ed.). p. 40, section G1-12. ISBN .
  11. ^ Radbruch, Don (January 2004). Dirt Track Auto Racing: 1919-1941 - A Pictorial History (2nd ed.). Jefferson, NC:  
  12. ^ Griggs, Brandon. Utah Curiosities: Quirky Characters, Roadside Oddities & Other Offbeat Stuff. Morris Book Publishing, LLC. p. 149.  
  13. ^ Utah Department of Transportation (2005). Tooele County (Map). 1:29040. General Highway Map. p. 6. Retrieved December 26, 2013.
  14. ^ Federal Aviation Administration, AeroNav Products (October 17, 2013). Salt Lake City — South (Map). Sectional Raster Aeronautical Charts (90 ed.).
  15. ^ Utah Department of Transportation (2005). Tooele County (Map). 1:29040. General Highway Map. p. 7. Retrieved December 26, 2013.
  16. ^ Utah Department of Transportation (2005). Tooele County (Map). 1:29040. General Highway Map. p. 8. Retrieved December 26, 2013.
  17. ^ a b Utah Department of Transportation (2005). Salt Lake County (Map). 1:22440. General Highway Map. Retrieved December 26, 2013.
  18. ^ Hamblin, W Kenneth (1992). Roadside Geology of U.S. Interstate 80 Between Salt Lake City and San Francisco.  
  19. ^ Arave, Lynn (November 16, 2009). "Holy smokes: Kennecott smelter, Utah's tallest man-made structure, to turn 35".  
  20. ^ "Motorists Should Avoid Spaghetti Bowl this Weekend".  
  21. ^ Arave, Lynn (July 14, 2006). "Prison once stood where park now is". Deseret News (Salt Lake City).  
  22. ^ Lincoln Highway Association (1923). Map of Strategic Routes between Salt Lake City, Utah and California (Map). 1:2500000. Cartography by Matthews-Northrup Works. OCLC 36006905.,1909. Retrieved December 26, 2013.
  23. ^ Utah Department of Transportation (2011). Official Highway Map (Map). Section D5, Salt Lake City, Ogden, Provo & Vicinity (Wasatch Front) inset.,T:,346. Retrieved December 26, 2013.
  24. ^ a b c United States nominal Gross Domestic Product per capita figures follow the "Measuring Worth" series supplied in Johnston, Louis; Williamson, Samuel H. (2014). "What Was the U.S. GDP Then?". MeasuringWorth. Retrieved April 18, 2014.  These figures follow the figures as of 2012.
  25. ^ "Church History: Golden Pass Road".  
  26. ^ Davidson, Lee (January 7, 2014). "UDOT launches variable speed limit system on I-80 in Parleys Canyon".  
  27. ^ Balaz, Christine (June 2, 2009). An Explorer's Guide: Utah (1st ed.). Woodstock, Vermont:  
  28. ^ Wilson, Arnie (2007). Ski Atlas of the World. London:  
  29. ^ Utah Department of Natural Resources. Historic Union Pacific Rail Trail (Map). Scale not given. http://stateparks.utah.govs/ Retrieved December 26, 2013.
  30. ^ Utah Department of Transportation (2005). Summit County (Map). 1:22440. General Highway Map. p. 2. Retrieved December 26, 2013.
  31. ^ Utah Department of Transportation (2005). Summit County (Map). 1:22440. General Highway Map. p. 3. Retrieved December 26, 2013.
  32. ^ Utah Writer's Program (Utah State Institute of Fine Arts);  
  33. ^ Lee, Willis T.; Stone, Ralph W.; Gale, Hoyt S. (1916). Part B. The Overland route: With a Side Trip to Yellowstone Park. Guidebook of the Western United States.  
  34. ^ Crain, Jim (September 1, 1994). California in Depth: A Stereoscopic History.  
  35. ^ Patrick, Kevin J. "15 - Lincoln Highway in Utah". Lincoln Highway Resource Guide.  
  36. ^ Hokanson, Drake (1999). "Salt Lake City to San Francisco: Desert, Mountain and Sea". Lincoln Highway – Main Street Across America.  
  37. ^ Staff (March 2010). Parley’s Canyon Trail: Feasibility Assessment Report (Report). . Retrieved December 30, 2013.
  38. ^ Bureau of Public Roads (November 11, 1926). United States System of Highways Adopted for Uniform Marking by the American Association of State Highway Officials (Map). 1:7,000,000. Cartography by U.S. Geological Survey. OCLC 32889555. Retrieved December 18, 2013.
  39. ^ . Retrieved December 27, 2013.
  40. ^ Texaco (1937). Texaco Road Map Idaho, Montana, Wyoming (Map). 1:1,774,080. Cartography by Rand McNally. Section M-8. OCLC 52950564.,-Montana,-Wyo. Retrieved December 26, 2013.
  41. ^ Shell Oil Company. Highway Map of Utah (Map). 1:1203840. Cartography by H.M. Gousha Company. Section E4-5.;sort:Pub_List_No_InitialSort%2CPub_Date%2CPub_List_No%2CSeries_No;lc:RUMSEY~8~1&mi=1&trs=3. Retrieved December 26, 2013.
  42. ^ . Retrieved December 26, 2013.
  43. ^ a b Staff (November 2008). "Route 80". Highway Resolutions. Utah Department of Transportation. Retrieved December 25, 2013. 
  44. ^ Lewis, Tom (1997). Divided Highways: Building the Interstate Highways, Transforming American Life. New York: Viking. pp. 120–1, 136–7.  
  45. ^ Public Roads Administration (August 14, 1957). Official Route Numbering for the National System of Interstate and Defense Highways as Adopted by the American Association of State Highway Officials (Map). Scale not given. Cartography by Public Roads Administration. Retrieved December 26, 2013.
  46. ^ a b "America Celebrates 30th Anniversary of the Interstate System". U.S. Highways (Federal Highway Administration). Fall 1986. 
  47. ^ Murrie, Matthew; Murrie, Steve (October 18, 2010). The First Book of Seconds. Avon, Mass.:  
  48. ^ Staff (August 25, 1986). "Around the Nation — Transcontinental Road Completed in Utah". The New York Times.  
  49. ^ Staff (October 2, 1990). "Rebuilt I-80 Section, Redwood to I-15, Opens on Schedule". The Salt Lake Tribune. p. B7.  
  50. ^ Jonsson, Dave (May 16, 1991). "Roads Need $4.3 Billion in Next 20 Years". The Salt Lake Tribune. p. C1.  
  51. ^ Baltezore, Jay (March 21, 1996). "UDOT Says I-15 Can Be Redone by 2001 UDOT: I-15 Can Be Redone by 2001". The Salt Lake Tribune. p. D1.  
  52. ^ Staff (November 2, 2000). "Most Interstate 15 Freeway Ramps Around 2100 South Are Open". The Salt Lake Tribune. p. B2. Retrieved December 31, 2013 – via ProQuest. (subscription required (help)). 
  53. ^ "72-4-207: The Purple Heart Trail".  
  54. ^ House, Dawn (August 2, 2004). "Purple Heart monument to be dedicated at HAFB". The Salt Lake Tribune.  
  55. ^ Staff (July 31, 2008). "I-80 bridge replacement complete; State Street reopened". Salt Lake City: KSL-TV. Retrieved May 13, 2013. 
  56. ^ Staff (February 8, 2010). "Route 80" (PDF). Highway Reference (Utah Department of Transportation). Retrieved December 25, 2013.
  57. ^ Staff (December 17, 2012). "Route 15" (PDF). Highway Reference (Utah Department of Transportation). Retrieved December 25, 2013.

External links

  • Media related to at Wikimedia Commons
  • Interstate 80 in Utah on AARoads
Interstate 80
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