What is Interstate 78?
{{Infobox road |country=USA |route=78 |type=I |established=1957 |length_mi=143.56 |length_round=2 |length_ref=<ref name=fhwa>{{cite web|url=http://www.fhwa.dot.gov/reports/routefinder/table1.htm|title=FHWA Route Log and Finder List: Table 1|date=2002-10-31|accessdate=2007-03-28|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 5-8 most major intersections and cities belong here; please read [[WP:USRD/STDS]] for more info -->{{jct|state=PA|PA|61}} in [[Hamburg, Pennsylvania|Hamburg, PA]]<br> {{jct|state=PA|I|476|PATP}} near [[Allentown, Pennsylvania|Allentown, PA]]<br> {{jct|state=NJ|I|287}} in [[Bedminster Township, New Jersey|Bedminster, NJ]]<br> {{jct|state=NJ|NJ|24}} in [[Springfield Township, Union County, New Jersey|Springfield, NJ]]<br> {{jct|state=NJ|GSP|}} in [[Union Township, Union County, New Jersey|Union]]/[[Hillside, New Jersey|Hillside, NJ]]<br> {{jct|state=NJ|I|95|NJTP}} in [[Newark, New Jersey|Newark, NJ]] }} '''Interstate 78''' is an [[Interstate Highway]] in the [[United States]]. It goes from [[Union Township, Lebanon County, Pennsylvania]] east to [[New York City]]. The route is {{convert|143.56|mi|km}} long.<ref name=fhwa/> On the west, it starts at [[Interstate 81]] northeast of [[Harrisburg, Pennsylvania]]. It passes through [[Allentown, Pennsylvania]], and western and northern [[New Jersey]]. It goes in the [[Holland Tunnel]] to end in [[Lower Manhattan]] in [[New York City]]. I-78 is a major road linking ports in the [[New York City]] and [[New Jersey]] area to points west. Over 4 million trucks use it annually. Trucks are 24% of all traffic. Truck traffic on the road is projected to rise once the widening of the [[Panama Canal]] is completed in 2015. With a wider canal, more Asian ships are expected to use East Coast ports.<