| 词条 | Interstate 84 in Utah |
| 释义 |
|section=114 |map={{maplink|frame=yes|plain=yes|frame-align=center|frame-width=290|frame-height=290|frame-lat=41.487|frame-long=-112.140|zoom=8|type=line|raw={{Wikipedia:Map data/Wikipedia KML/Interstate 84 in Utah}}}} |map_custom=yes |map_notes=I-84 highlighted in red |length_mi=119.77 |length_ref=[1] |established=1956 |direction_a=West |terminus_a={{jct|state=ID|I|84}} at Idaho state line |junction={{jct|state=UT|I|15}} near Tremonton {{jct|state=UT|US|91}} in Willard {{jct|state=UT|I|15}} in Riverdale {{jct|state=UT|US|89}} in Uintah |direction_b=East |counties=Box Elder, Weber, Davis, Morgan, Summit |terminus_b={{jct|state=UT|I|80}} near Echo |previous_type=SR|previous_route=83|next_type=SR|next_route=85 }} Interstate 84 (I-84) is a part of the Interstate Highway System that links Portland, Oregon to I-80 near Echo, Utah. The {{convert|119.77|mi|km|adj=mid|-long}} segment in the U.S. state of Utah is the shortest of any of the three states the western portion of the Interstate Highway passes through, and contains the eastern terminus of the highway. I-84 enters Box Elder County near Snowville before becoming concurrent with I-15 in Tremonton. The concurrent highways travel south through Brigham City and Ogden and separate near the Ogden-Hinckley Airport. Turing east along the Davis County border, I-84 intersects U.S. Route 89 (US-89) and enters Weber Canyon as well as Morgan County. While in Morgan County, I-84 passes the Devil's Gate-Weber Hydroelectric Power Plant and Devil's Slide rock formation. Past Morgan, the highway crosses into Summit County, past the Thousand Mile Tree before reaching its eastern terminus at I-80 near Echo. Construction of the controlled-access highway was scheduled in late 1957 under the designations Interstate 82S and Interstate 80N. The I-82S designation was only applied on paper for about a year, but the I-80N designation was the highway's official designation until 1977 when it was renumbered I-84 by the American Association of State Highway and Transportation Officials. By 1986, construction of the freeway had been completed across the three states. I-84 is unusual as there are two noncontiguous segments: Oregon, Idaho, and Utah as well as Pennsylvania, New York, Connecticut, and Massachusetts. Average traffic in 2012, along the non-concurrent parts of I-84, ranged from as few as 6,655 vehicles traveling along I-84 at the interchange with SR-86 in Henefer, and as many as 18,945 vehicles used the highway at the SR-26 interchange in Riverdale. Route descriptionOut of the three states that the western portion of I-84 passes through, the {{convert|119.77|mi|km|adj=mid|-long}} segment in Utah is the shortest. By comparison, the longest stretch of western I-84 through a single state is the {{convert|375.17|mi|km|adj=mid|-long}} segment in Oregon. I-84 also has a noncontiguous eastern segment that passes through Pennsylvania, New York, Connecticut, and Massachusetts: all four of these segments are shorter than the Utah segment.[1] Every year, the Utah Department of Transportation (UDOT) conducts a series of surveys on its highways in the state to measure traffic volume. This 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 6,655 vehicles traveled I-84 at the interchange with SR-86 in Henefer, and as many as 18,945 vehicles used the highway at the SR-26 interchange in Riverdale.[2] Between 27 and 57 percent of the traffic recorded consisted of trucks.[3] These counts are of the portion of the freeway in Utah and are not reflective of the entire Interstate, or of its concurrency with I-15. As part of the Interstate Highway System,[4] 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.[5] Western segmentCrossing the Idaho-Utah state line, I-84 enters Box Elder County and the Curlew Valley near farmland that utilizes center pivot irrigation before intersecting SR-30 at a diamond interchange.[6] The town of Snowville is crossed before passing to the north of the Hansel Mountains and the North Promontory Mountains. The town of Howell, accessible from an interchange with SR-83, lays to the southeast of Blue Creek Reservoir in the Blue Creek Valley. Access to the Golden Spike National Historic Site is provided by SR-83 south of Howell. The Blue Spring Hills form the southern border of Howell as I-84 continues southeast.[7] Additional center irrigation farmland is passed before giving way to more traditional farmland outside of the city of Tremonton,[6] where a trumpet interchange marks where I-15 turns north towards Malad City and Pocatello.[8] Heading southeast from this interchange, I-84 and I-15 are concurrent for just over {{convert|38|mi|km}}.[11] Concurrency with I-15Concurrent highways I-15/84 continue south, parallel to rail belonging to the Union Pacific Railroad (UP) past the Wellsville Mountain Wilderness, to an interchange at 1100 West in Brigham City, also known as US-91, which once in Brigham City becomes concurrent with US-89 and the two highways travel northeast from Brigham City into Box Elder Canyon towards Logan in the heart of the Cache Valley. US-89 closely parallels I-15/84 east, as the highways pass Willard Bay, the Willard Bay State Park and Bear River Migratory Bird Refuge before crossing into Weber County.[6][7] Upon entering Weber County the rail line that the highway has paralleled since Tremonton splits off eastwards near Defense Depot Ogden, as the concurrent highways continue south past Farr West and Slaterville before a Southern Pacific Railroad rail line, which traverses the Great Salt Lake on a causeway, crosses under the freeway. The city of Ogden is bypassed by the Interstates, with US-89 serving downtown. US-89 is accessible via interchanges with SR-39, SR-79 and SR-104 in addition to I-84 further southeast. I-84 splits from I-15 at the south end of the Ogden-Hinckley Airport, with I-15 continuing south towards Salt Lake City and Provo.[6][9] Eastern segmentSplitting from I-15 near Roy, I-84 passes between Hill Air Force Base, which is to the south of the highway, and Washington Terrace before clipping the extreme northern portions of Davis County.[9] While in Davis County, I-84 intersects 475 East, also known as the Adams Avenue Parkway,[6] before coming to a hybrid partial cloverleaf/half-diamond interchange with US-89 along the Davis-Weber county line.[9][10] I-84 follows the Weber River into Weber Canyon, Morgan County, and the Wasatch-Cache National Forest. Once in the canyon, the carriageways of the highway split to accommodate the Devil's Gate-Weber Hydroelectric Power Plant. Following the river south, I-84 exits the forest and enters the county seat of Morgan. Leaving the city the highway turns back east,[6][11] passing Devil's Slide, an unusual rock formation just off the freeway.[12] Upon entering Summit County, I-84 passes the Thousand Mile Tree, planted by Union Pacific Railroad workers to mark the construction of {{convert|1000|mi|km}} of rail from its origin in Omaha, Nebraska.[13][14] The tree was said to be the only pine tree between Omaha and Salt Lake City.[15] Another tree was planted as the original tree had died in 1900 and was removed in 1926 to during the conversion from single track to double track through the canyon.[16][17] Past the tree the freeway passes through the town of Henefer before terminating at a directional T interchange with I-80 just south of the census-designated place of Echo. Immediately south of the interchange is Echo Reservoir and Echo Dam.[6][18] HistoryEarlier roadsMost of the original routing of what is now I-84 existed as early as 1923; however the portion of now I-84 into Idaho was not yet constructed.[19] In 1926, much of the route was signed as US-30S, from the now eastern terminus at I-80 (US-530 then), northwest into Ogden. Between Ogden and Brigham City, the highway was to be concurrent with US-91, then US-30S split off northwest to the Idaho border.[20] The entire western branch of US-30S was an unimproved road, however the concurrency into Ogden was paved. The remainder of the route to its now terminus was mostly graded with a few improved sections,[21] and by 1937, the entire route was paved.[22] Current roadThe first Utah State Route to have the number 84 is what is now known as SR-126. SR-126 was originally numbered SR-84 until the 1977 renumbering of Utah State highways. Previously, the freeway's legislative designation was SR-3.[23] Like the other two main Interstate Highways in Utah, I-15 (the Veterans Memorial Highway) and I-80 (the Purple Heart Trail), I-84 has also been given a special name of "Vietnam Veterans Memorial Highway". House Bill HB275, sponsored by Utah Representative Justin Fawson (R), North Ogden, authorizing the name designation was signed into law by Utah Governor Gary Herbert on March 30, 2015.[24][25] The highway loosely follows the path of the First Transcontinental Railroad.[26] The original routing of US-30S had the highway passing into Idaho west of Black Pine Peak however,[27] the new I-84 was constructed to the east. The original roadways are now numbered SR-30, SR-42 and Idaho State Highway 2847.[6][28] {{Infobox road small|state=UT|type=I 1957|route=80N |location=Idaho state line to Echo |formed=1958|deleted=1977 |yr_ref=[41][42] }} Passage of the Federal Aid Highway Act of 1956 formed the Interstate Highway System,[29] however only the western segment of now I-84 was approved at this time, and a designation of I-82S was assigned to a then unconstructed controlled-access highway across Box Elder County in 1957.[30] The eastern segment of the highway was added later in 1957,[31] and the route was numbered I-80N by 1958.[32] By 1968, portions of the western half of the freeway had been completed, along with the segment between Tremonton and Brigham City. A portion of the freeway was completed around Morgan as well.[33] By 1971, most of the western portions of the freeway had been constructed with two sections remaining that had at-grade intersections. Along the concurrency, there were gaps between Brigham City and Pleasant View, and one small gap near the Devil's Slide.[34] The I-80N designation was changed to I-84 in 1977 by the American Association of State Highway and Transportation Officials, over 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.[23][35] By 1978, construction of I-84 was complete across most of the three states.[36] In September 1986, the final section of the highway was opened on the {{convert|11|mi|km}} between Tremonton to Blue Creek Summit, following three years of construction that cost $21 million.[37] In 1994, I-84 was planned to be used to transport low-level radioactive waste from the Idaho National Engineering Laboratory to Waste Isolation Pilot Plant in Carlsbad, New Mexico via Wyoming.[38] This did not start until 1999 however due to the delay in the opening of the New Mexican plant.[39] A $20 million (equivalent to ${{formatprice|{{inflation|US-GDP|20000000|1998|r=-5}}}} in {{inflation-year|US-GDP}}){{inflation-fn|US-GDP}} reconstruction of the US-89 interchange at the mouth of Weber Canyon was financed partly by the funding obtained by the state in preparation for the 2002 Winter Olympics in 1998,[40] and was scheduled to begin in 2000.[41] Reconstruction of a {{convert|10|mi|km|adj=mid|-long}} segment of I-84 between Mountain Green and Morgan was done between 2004 and 2005 at a cost of $19 million (equivalent to ${{formatprice|{{inflation|US-GDP|19000000|2004|r=-5}}}} in {{inflation-year|US-GDP}}).{{inflation-fn|US-GDP}}[42] One of the sub-contractors on the job was found guilty of lying about sub-par work done on installation of roadside impact absorbers along this stretch.[43] Exit list{{jcttop|exit|length_ref=[44]}}{{UTint|exit|county=Box Elder|cspan=13|location=none|mile=0.000|road={{jct|state=ID|I|84|dir1=west}}|notes=Continuation into Idaho}}{{UTint|exit|location=none |mile=4.660 |exit=5 |road={{jct|state=UT|SR|30|dir1=west|city1=Park Valley}} |type=concur |notes=West end of SR-30 overlap; former US-30S }}{{UTint|exit |location=Snowville |mile=7.125 |exit=7 |road=Snowville }}{{UTint|exit |location=none |mile=11.978 |exit=12 |road=Ranch Exit }}{{UTint|exit |location=none |mile=15.808 |exit=16 |road=Hansel Valley }}{{UTint|exit |location=none |mile=17.385 |exit=17 |road=Rattlesnake Pass }}{{UTint|exit |location=none |mile=20.317 |exit=20 |road=Blue Creek }}{{UTint|exit |location=none |mile=24.457 |exit=24 |road=Pocatello Valley }}{{UTint|exit |location=Howell |mile=26.567 |exit=26 |road={{jct|state=UT|SR|83|dir1=south|city1=Howell|location2=ATK}} |notes=Access to Golden Spike National Historic Site }}{{UTint|exit |location=none |mile=32.414 |exit=32 |road=Ranch Exit }}{{UTint|exit |location=none |mile=39.508 |exit=39 |road=Garland, Bothwell }}{{UTint|exit |location=Bothwell Junction |mile=40.824 |exit=40 |road={{jct|state=UT|SR|102|city1=Tremonton|city2=Bothwell}} }}{{UTint|exit |location=none |type=concur |mile=42.012 |exit=41 |road={{jct|state=UT|I|15|dir1=north|location1=Pocatello}} |notes=West end of I-15 overlap; signed as exit 379 westbound }}{{jctgap|text=I-84 overlaps Interstate 15 for {{convert|38.309|mi|km|abbr=on}} }}{{UTint|exit |county=Weber |cspan=2 |location=Riverdale |lspan=2 |type=concur |mile=81.043 |exit= |road={{jct|state=UT|I|15|dir1=south|city1=Salt Lake City}} |notes=East end of I-15 overlap; I-15 exit 340; westbound access via exit 81 }}{{UTint|exit |mile=81.727 |exit=81 |road={{jct|state=UT|SR|26|to2=to|I|15|dir2=south|name1=Riverdale Road|city1=Riverdale}} }}{{UTint|exit |county=Davis |location=Uintah |mile=84.594 |exit=85 |road=Adams Avenue |notes=Adams Avenue is a private toll road here }}{{UTint|exit |county=Weber |location=Uintah Junction |mile=87.771 |exit=87 |road={{jct|state=UT|US|89|city1=South Ogden|city2=Salt Lake City|city3=Ogden}} |notes=Signed as exits 87A (south) and 87B (north) westbound }}{{UTint|exit |county=Morgan |cspan=9 |location=none |mile=91.240 |exit= |place=Rest area (eastbound) |type=incomplete}}{{UTint|exit |type=incomplete |location=none |mile=92.339 |exit=92 |road={{jct|state=UT|SR|167||dir1=north|city1=Mountain Green|city2=Huntsville}} |notes=Eastbound exit and westbound entrance }}{{UTint|exit |location=none |mile=93.904 |exit= |place=Rest area (westbound) |type=incomplete}}{{UTint|exit| |location=none |mile=96.504 |exit=96 |road=Stoddard, Peterson }}{{UTint|exit |location=Morgan |mile=103.333 |exit=103 |road={{jct|state=UT|SR|66|city1=Morgan}} }}{{UTint|exit |location=none |mile=106.173 |exit=106 |road=Ranch Exit }}{{UTint|exit |location=none |mile=108.272 |exit=108 |road=Taggart }}{{UTint|exit |location=none |mile=111.313 |exit=111 |road=Croydon |notes=Former SR-158 }}{{UTint|exit |location=none |mile=110.761 |exit= |place=Devil's Slide View Area}}{{UTint|exit |county=Summit |cspan=3 |location=none |mile=112.739 |exit=112 |road={{jct|state=UT|SR|86|dir1=east|city1=Henefer}} }}{{UTint|exit |location=Henefer |mile=115.399 |exit=115 |road={{jct|state=UT|SR|65|dir1=south|city1=Henefer|city2=Echo}} }}{{UTint|exit |location=none |mile=119.773 |exit=120 |road={{jct|state=UT|I|80|name1={{jct|state=UT|US|189|noshield=yes}}|city1=Salt Lake City|location2=Cheyenne}} |notes=I-80 exit 168; signed as exits 120A (east) & 120B (west); eastern terminus; semi-directional T interchange }}{{jctbtm|exit|keys=concur,incomplete}} See also
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Gousha Company|scale=1:1203840|section=C2}} 28. ^{{cite map|publisher=Idaho Transportation Department|title=Idaho Official State Highway Map|url=http://www.visitidaho.org/assets/docs/Idaho_Highway_Map_onscreen.pdf|accessdate=December 26, 2013|scale=M5-6}} 29. ^{{cite book|last=Lewis|first=Tom|year=1997|title=Divided Highways: Building the Interstate Highways, Transforming American Life|location=New York|publisher=Viking|pages=120–1, 136–7|isbn=0-670-86627-X}} 30. ^{{cite map|publisher=Public Roads Administration|title=Official Route Numbering for the National System of Interstate and Defense Highways as Adopted by the American Association of State Highway Officials|url=http://www.ajfroggie.com/roads/yellowbook/numbering-1957.jpg|accessdate=December 26, 2013|date=August 14, 1957|cartography=Public Roads Administration|scale=Scale not given}} 31. ^{{cite map|publisher=Public Roads Administration|title=Routes to be Added to the National System of Interstate and Defense Highways|url=http://www.ajfroggie.com/roads/yellowbook/additions-1957.jpg|accessdate=December 27, 2013|date=October 17, 1957|scale=Scale not given}} 32. ^1 {{cite map|publisher=Public Roads Administration|title=Official Route Numbering for the National System of Interstate and Defense Highways as Adopted by the American Association of State Highway Officials|url=http://www.ajfroggie.com/roads/yellowbook/numbering-1958.jpg|accessdate=December 27, 2013|date=June 27, 1958|scale=Scale not Given}} 33. ^{{cite map|publisher=Union Oil Company of California|title=Western United States|year=1968|cartography=Rand McNally & Co.|scale=1:3104640|section=H7-8}} 34. ^{{cite map|publisher=State Road Commission of Utah|title=Utah Official Highway Map|year=1971|cartography=Rand McNally|scale=1:1,102,464|section=B4-C5}} 35. ^1 {{cite news|last=Staff|date=August 13, 1977|work=Deseret News|location=Salt Lake City|pages=A3|title=Interstate 80 to become 84|oclc=367900151}} 36. ^{{cite news|url=http://search.proquest.com/docview/123565578/1429AB0E6AF16C36F27/2?accountid=3357|title=Other Projects Get $5 Billion in Interstate Road 'Trades': Fewer Than 11,000 Miles Complete|last=Staff|date=December 3, 1978|work=The New York Times|accessdate=December 27, 2013|via=ProQuest|subscription=yes|oclc=1645522}} 37. ^{{cite news |date=September 21, 1986 |title=UDOT completes highway |page=2 |work=The Spectrum |location=St. George, Utah |agency=UPI |url=https://www.newspapers.com/clip/21197291/final_section_of_i84_in_utah/ |via=Newspapers.com |accessdate=June 22, 2018}} {{free access}} 38. ^{{cite news|url=http://search.proquest.com/docview/288598169/1429AB09DC63601A22E/21?accountid=3357|title=N-Waste shipments to Pass Through N. Utah in 1994|last=Staff|date=September 1, 1993|work=The Salt Lake Tribune|page=C3|accessdate=December 27, 2013|via=ProQuest|subscription=yes|oclc=8086936|agency=Associated Press}} 39. ^{{cite news|url=http://search.proquest.com/docview/288903298/1429AB09DC63601A22E/31?accountid=3357|title=Judge's Ruling May Open Path Through Utah for Nuke Waste|last=Staff|date=March 23, 1999|work=The Salt Lake Tribune|page=A8|accessdate=December 27, 2013|via=ProQuest|subscription=yes|agency=Associated Press|oclc=8086936}} 40. ^{{cite news|url=http://search.proquest.com/docview/288847913/1429AC68D5518AA2FD5/62?accountid=3357|title=Fed Funds Pave Way For Roads; Most of $90M transportation grant will go to Olympic highway work; Grant Provides $75M for Olympic Roads|last=Gorrell|first=Mike|date=October 28, 1998|work=The Salt Lake Tribune|page=A1|accessdate=December 27, 2013|via=ProQuest|subscription=yes|oclc=8086936}} 41. ^{{cite news|url=http://search.proquest.com/docview/288909759/1429AC68D5518AA2FD5/79?accountid=3357|title=As Feds Divvy Up Last of Highway Funds, SLOC Holds Breath|last=Gorrell|first=Mike|date=October 19, 1999|work=The Salt Lake Tribune|page=B2|accessdate=December 27, 2013|via=ProQuest|subscription=yes|oclc=8086936}} 42. ^{{cite press release|title=Granite Construction Awarded $19.0 Million Highway Reconstruction Project in Utah|agency=PR Newswire|date=December 22, 2003|url=http://search.proquest.com/docview/448224430/1429AC68D5518AA2FD5/97?accountid=3357|accessdate=December 27, 2013|via=ProQuest|subscription=yes|oclc=44297296}} 43. ^{{cite news|url=http://search.proquest.com/docview/280593335/1429AC68D5518AA2FD5/139?accountid=3357|title=Orem construction company admits lying|last=Manson|first=Pamela|date=July 8, 2009|work=The Salt Lake Tribune|accessdate=December 27, 2013|via=ProQuest|subscription=yes|oclc=8086936}} 44. ^1 {{cite web|url=http://www.udot.utah.gov/main/uconowner.gf?n=7267404455014867|title=Route 84|date=January 2, 2013|work=Highway Reference|publisher=Utah Department of Transportation|accessdate=December 27, 2013}} External links{{AttachedKML|display=title,inline}}
9 : Interstate Highways in Utah|Interstate 84 (Oregon–Utah)|Transportation in Box Elder County, Utah|Transportation in Weber County, Utah|Transportation in Davis County, Utah|Transportation in Morgan County, Utah|Transportation in Summit County, Utah|Central Overland Route|U.S. Route 30S |
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