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Interstate 78
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{{Short description|Interstate Highway in Pennsylvania, New Jersey, and New York}} {{Use mdy dates|date=December 2017}} {{Use American English|date=May 2022}} {{Infobox road | country = USA | route = 78 | type = I | map = {{Maplink|frame=yes|plain=yes|frame-align=center|frame-width=290|type=line|raw={{Wikipedia:Map data/Wikipedia KML/Interstate 78}}}} | map_custom = yes | map_notes = I-78 highlighted in red | established = 1957 | length_mi = 146.28 | maint = [[PennDOT]], [[DRJTBC]], [[NJDOT]], [[NJTA]], and [[PANYNJ]] | length_round = 2 | length_ref = <ref name=fhwa>{{cite web |url = https://www.fhwa.dot.gov/planning/national_highway_system/interstate_highway_system/routefinder/table01.cfm |work= FHWA Route Log and Finder List |title = Table 1 - Main Routes |date = December 31, 2021 |access-date = May 29, 2022 |author = [[Federal Highway Administration]] }}</ref> | direction_a = West | direction_b = East | terminus_a = {{jct|state=PA|I|81}} in [[Union Township, Lebanon County, Pennsylvania|Union Township, PA]] | terminus_b = [[Canal Street (Manhattan)|Canal Street]] in [[New York City|New York, NY]] | junction = <!-- Major junctions only; Only 10 most major intersections and cities belong here; please read [[WP:USRD/STDS]] for more info -->{{plainlist|1= *{{jct|country=USA|US|22}} in [[Fredericksburg, Lebanon County, Pennsylvania|Fredericksburg, PA]] *{{jct|state=PA|US|222|PA|309}} near [[Allentown, Pennsylvania|Allentown, PA]] *{{jct|state=PA|PA|33}} near [[Easton, Pennsylvania|Easton, PA]] *{{jct|state=NJ|US|22}} near [[Alpha, New Jersey|Alpha, NJ]] *{{jct|state=NJ|NJ|31}} in [[Clinton Township, New Jersey|Clinton Township, NJ]] *{{jct|state=NJ|I|287}} in [[Bedminster Township, New Jersey|Bedminster, NJ]] *{{jct|state=NJ|NJ|24}} in [[Springfield Township, Union County, New Jersey|Springfield, NJ]] *{{jct|state=NJ|GSP2}} at the [[Union Township, Union County, New Jersey|Union Township]]–[[Hillside, New Jersey|Hillside, NJ]] line *{{jct|state=NJ|US|1-9|NJ|21}} in [[Newark, New Jersey|Newark, NJ]] *{{jct|state=NJ|I-Toll|95|NJTP2||US|1-9}} in Newark, NJ}} | states = [[Pennsylvania]], [[New Jersey]], [[New York (state)|New York]] | restrictions = No [[Dangerous goods|hazardous goods]] in [[Holland Tunnel]] }} '''Interstate 78''' ('''I-78''') is an east–west [[Interstate Highway]] in the [[Northeastern United States]] that runs {{Convert|144|mi|km}} from [[Interstate 81|I-81]] northeast of [[Harrisburg, Pennsylvania]], through [[Allentown, Pennsylvania|Allentown]] to western and [[North Jersey]], terminating at the [[Holland Tunnel]] entrance to [[Lower Manhattan]] in [[New York City]]. Major metropolitan areas along I-78 include the [[Lehigh Valley]] in [[Pennsylvania]], the [[Gateway Region]] in New Jersey, and the [[New York metropolitan area]]. I-78 links ports in New York City and [[North Jersey]] to points west, including the Lehigh Valley, the third-largest metropolitan region of [[Pennsylvania]]. I-78 accommodates over four million trucks annually, representing 24 percent of all truck traffic in the nation.<ref>{{Cite web |title=New Jersey's Infrastructure for Business {{!}} Choose New Jersey |url=https://www.choosenj.com/new-jerseys-assets/infrastructure/ |access-date=2022-05-29 |website=Choose New Jersey, Inc. |language=en-US}}</ref> It also is a major connection point to the New York metropolitan area's three major international airports, [[Newark Liberty International Airport]], [[John F. Kennedy International Airport]], and [[LaGuardia Airport]].
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