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{{main|Interstate 78 in Pennsylvania}} |
{{main|Interstate 78 in Pennsylvania}} |
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[[File:Interstate 78 and 81 junction, northbound.jpg|thumb|left|Approaching the Interstate 78 interchange on [[Interstate 81 (Pennsylvania)|Interstate 81]] north in [[Union Township, Lebanon County, Pennsylvania]].]] |
[[File:Interstate 78 and 81 junction, northbound.jpg|thumb|left|Approaching the Interstate 78 interchange on [[Interstate 81 (Pennsylvania)|Interstate 81]] north in [[Union Township, Lebanon County, Pennsylvania]].]] |
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I-78 begins at a directional-T [[Interchange (road)|interchange]] with [[Interstate 81]] in [[Union Township, Lebanon County, Pennsylvania]], about 25 |
I-78 begins at a directional-T [[Interchange (road)|interchange]] with [[Interstate 81 in Pennsylvania|I-81]] in [[Union Township, Lebanon County, Pennsylvania]], about {{convert|25|mi|km]] northeast of [[Harrisburg, Pennsylvania|Harrisburg]]. Near the east end of the county, at exit 8, [[U.S. Route 22 in Pennsylvania|U.S. Route 22]] (US 22) merges with I-78, running concurrently for the next {{convert|43|mi|km}}.<ref>{{google maps |url=http://maps.google.com/maps?f=q&hl=en&geocode=&q=Bethel,+PA&ie=UTF8&ll=40.450605,-76.065216&spn=1.92281,3.641968&z=8&om=1 |title=overview map of I-78 in Lebanon, Berks, and Lehigh Counties |accessdate=2007-08-31}}</ref> |
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At exit 51, in [[Upper Macungie Township, Pennsylvania|Upper Macungie Township]], US |
At exit 51, in [[Upper Macungie Township, Pennsylvania|Upper Macungie Township]], US 22 leaves the highway. Passengers traveling on I-78 eastbound must use this exit to access [[Interstate 476|I-476]] (Northeast Extension of the [[Pennsylvania Turnpike]]), and westbound travelers must use exit 53 (northbound [[Pennsylvania Route 309]] (PA 309}) and then westbound US 22. From exits 53 to 60, I-78 runs concurrently with PA 309. The six-lane overlap bypasses the [[Allentown, Pennsylvania|City of Allentown]] to the south and crosses [[South Mountain (eastern Pennsylvania)|South Mountain]].<ref>{{google maps |url=http://maps.google.com/maps?f=q&hl=en&geocode=&q=I-78,+Allentown,+PA&sll=40.486649,-76.065216&sspn=0.015014,0.028453&ie=UTF8&ll=40.570464,-75.538559&spn=0.239926,0.455246&z=11&om=1 |title=overview map of I-78 southeast of Allentown |accessdate=2007-08-31}}</ref><ref>{{google maps |url=http://maps.google.com/maps?f=q&hl=en&geocode=&q=I-78,+Allentown,+PA&sll=40.486649,-76.065216&sspn=0.015014,0.028453&ie=UTF8&ll=40.564294,-75.483027&spn=0.001875,0.003557&t=k&z=18&om=1 |title=overview Satellite Image of I-78 with six lanes |accessdate=2007-08-31}}</ref> |
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At exit 60 (A-B going westbound), PA |
At exit 60 (A-B going westbound), PA 309 south leaves for [[Quakertown, Pennsylvania|Quakertown]].<ref name="google">{{google maps |url=http://maps.google.com/maps?hl=en&q=I-78,+PA&um=1&sa=N&tab=wl |title=Interstate 78 in Pennsylvania |accessdate=2007-08-31}}</ref> {{convert|6|mi|km}} later, there is an interchange between [[Pennsylvania Route 412|PA 412]] and I-78 in [[Hellertown, Pennsylvania|Hellertown]]. PA 412 also goes to [[Bethlehem, Pennsylvania|Bethlehem]] and [[Lehigh University]]. At mile marker 71, [[Pennsylvania Route 33|PA 33]] intersects with I-78 at a [[trumpet interchange]]. PA 33 traverses the [[Pocono Mountains]] and goes to [[Bangor, Pennsylvania|Bangor]] and [[Interstate 80 in Pennsylvania|I-80]]. The final exit on I-78 in Pennsylvania is for Morgan Hill Road, which goes to [[Pennsylvania Route 611|PA 611]] and [[Easton, Pennsylvania|Easton]]. I-78 then crosses the [[Interstate 78 Toll Bridge]] and enters [[New Jersey]]. |
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===New Jersey=== |
===New Jersey=== |
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{{main|Interstate 78 in New Jersey}} |
{{main|Interstate 78 in New Jersey}} |
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After the [[Interstate 78 Toll Bridge]], I-78 enters New Jersey as the '' |
After the [[Interstate 78 Toll Bridge]], I-78 enters New Jersey as the ''Phillipsburg–Newark Expressway''.<ref name="sld">{{cite web|author=[[New Jersey Department of Transportation]]|url=http://www.state.nj.us/transportation/refdata/sldiag/00000078__-.pdf|title=Interstate 78 straight line diagram|accessdate=2007-08-31}}</ref> The road begins by running parallel with [[County Route 642 (Warren County, New Jersey)|County Route 642]] (CR 642) in the town of [[Alpha, New Jersey|Alpha]]. At {{convert|3.94|mi|km}}, Exit 3, a partial cloverleaf interchange brings together [[U.S. Route 22 in New Jersey|US 22]], [[New Jersey Route 122|NJ 122]], and [[New Jersey Route 173|NJ 173]] with Interstate 78 in [[Phillipsburg, New Jersey|Phillipsburg]].<ref name="googlenj">{{google maps |url=http://maps.google.com/maps?hl=en&q=I-78,+New+Jersey,+United+States&um=1&sa=N&tab=wl|title=I-78, New Jersey, United States |accessdate=2007-08-31}}</ref> US 22 now runs concurrently with I-78 for the next {{convert|15|mi|km}}. Going westbound, exit 4 leaves to the right for [[County Route 637 (Warren County, New Jersey)|CR 637]] and Warren Glen. The next exit, Exit 6, is for [[County Route 632 (Warren County, New Jersey)|CR 632]] in Bloomsbury. However the route number is not signed on I-78. Exit 7 is the first of several eastbound exits for NJ 173. This one is located in Bloomsbury as NJ 173 begins to parallel the interstate. {{convert|4|mi|km}} later, Exit 11 leaves to the right as another exit for NJ 173. [[County Route 614 (Warren County, New Jersey)|CR 614]] also is located off the exit. Exit 12, westbound is for NJ 173 again. However, Exit 12 eastbound is for a [[frontage road]] parallelling I-78. |
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[[Image:NJ guide sign.jpg|thumb|left|I-78, [[U.S. Route 1-9|US |
[[Image:NJ guide sign.jpg|thumb|left|I-78, [[U.S. Route 1-9 in New Jersey|US 1-9]], US 22, and [[New Jersey Route 21|NJ 21]] junction.]] |
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Exit 13 is only westbound and is another exit for NJ |
Exit 13 is only westbound and is another exit for NJ 173. Nearby the exit, going eastbound, the frontage road merges in.<ref name="googlenj"/> Exit 15 is for NJ 173 and [[County Route 513 (New Jersey)|CR 513]] in Franklin Township. Exit 17 is for [[New Jersey Route 31|NJ 31]] in [[Clinton Township, New Jersey|Clinton]]. In the town of [[Annandale, New Jersey|Annandale]], US 22 leaves I-78 at exit 18. US 22 continues towards Bound Brook and Union County. At exit 20, [[County Route 639 (Hunterdon County, New Jersey)|CR 639]] intersects. CR 639 heads towards the [[Round Valley Reservoir|Round Valley Recreational Area]]. Exit 24 is for [[County Route 523 (New Jersey)|CR 523]] towards [[Oldwick, New Jersey|Oldwick]]. At exit 29, [[Interstate 287 in New Jersey|I-287]], [[U.S. Route 202 in New Jersey|US 202]], and [[U.S. Route 206 in New Jersey|US 206]] interchange with I-78 in Bedminster. At this point, in Somerset County, Exits 33, 36 and 40 are for county routes in Warren Township. At exit 41, I-78 enters Union County.<ref name="googlenj"/> At exit 45, [[County Route 527 (New Jersey)|CR 527]] intersects after paralleling for some time. West of exit 48, I-78 splits into express and local highways. Exit 48 is for [[New Jersey Route 24|NJ 24]] in Springfield. Exit 49A is for one of Route 24's spur routes, [[New Jersey Route 124|NJ 124]]. Exit 52 is for the [[Garden State Parkway]] in [[Union Township, Union County, New Jersey|Union]]. At Exits 57 and 58, [[New Jersey Route 21|NJ 21]], [[U.S. Route 1 in New Jersey|US 1]], [[U.S. Route 9 in New Jersey|US 9]], and US 22 intersect I-78. The exit provides access to [[Newark Liberty International Airport]]. |
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[[Image:I-78 NJTPX EB.jpg|thumb|right|200px|I-78 eastbound at the [[Newark Bay Bridge]].]] |
[[Image:I-78 NJTPX EB.jpg|thumb|right|200px|I-78 eastbound at the [[Newark Bay Bridge]].]] |
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East of exit 58 at the eastern tip of Newark, I-78 becomes the '''Newark Bay Extension''' of the [[New Jersey Turnpike]]. Past the first toll plaza, I-78 has an interchange with [[Interstate 95 |
East of exit 58 at the eastern tip of Newark, I-78 becomes the '''Newark Bay Extension''' of the [[New Jersey Turnpike]]. Past the first toll plaza, I-78 has an interchange with [[Interstate 95 in New Jersey|I-95]] (The New Jersey Turnpike) and crosses [[Newark Bay]] via the [[Newark Bay Bridge]].<ref name="googlenj"/> The first exit, 14A, is for [[New Jersey Route 440|NJ 440]] in [[Bayonne, New Jersey|Bayonne]]. The [[Liberty State Park]] can be reached by taking Exit 14B. Exit 14C is the final numbered exit, providing access to the [[Liberty Science Center]]. [[New Jersey Route 139|NJ 139]] runs concurrently with I-78 as it approaches the [[Holland Tunnel]] and enters [[New York State]]. |
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===New York City=== |
===New York City=== |
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{{main|Interstate 78 in New York}} |
{{main|Interstate 78 in New York}} |
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{{see also|Holland Tunnel}} |
{{see also|Holland Tunnel}} |
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I-78's length in [[New York]] is only |
I-78's length in [[New York]] is only {{convert|0.5|mi|km}} - half of the Holland Tunnel and the egress-only roundabout immediately beyond the end of the tunnel. The route was planned to run east and north through New York City to end at [[Interstate 95 in New York|I-95]] in [[the Bronx]], but sections of the planned route, including the [[Lower Manhattan Expressway]], were cancelled. |
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[[Image:Holland tunnel.jpg|thumb|left|200px|I-78 at the [[Holland Tunnel]].]] |
[[Image:Holland tunnel.jpg|thumb|left|200px|I-78 at the [[Holland Tunnel]].]] |
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In New York City, I-78 continues through the limited access egress-only roundabout known as the Saint John's Rotary. The five separate exits from the Rotary are assigned numbers — exits 1 to 5 - in counterclockwise order. The last one — and the logical continuation east — is Exit 5, [[Canal Street (Manhattan)|Canal Street]]. Under the original plans, I-78 was to continue across [[Manhattan]] as the [[Lower Manhattan Expressway]] onto the [[Williamsburg Bridge]], and then beyond [[I-278]] on the never-built Bushwick Expressway through [[Brooklyn]] into [[Queens]] near the [[John F. Kennedy Airport]]. A section of I-78 at the airport was built as the [[Nassau Expressway]], later [[Interstate 878]] and now |
In New York City, I-78 continues through the limited access egress-only roundabout known as the Saint John's Rotary. The five separate exits from the Rotary are assigned numbers — exits 1 to 5 - in counterclockwise order. The last one — and the logical continuation east — is Exit 5, [[Canal Street (Manhattan)|Canal Street]]. Under the original plans, I-78 was to continue across [[Manhattan]] as the [[Lower Manhattan Expressway]] onto the [[Williamsburg Bridge]], and then beyond [[Interstate 278 in New York|I-278]] on the never-built Bushwick Expressway through [[Brooklyn]] into [[Queens]] near the [[John F. Kennedy Airport]]. A section of I-78 at the airport was built as the [[Nassau Expressway]], later [[Interstate 878|I-878]] and now [[New York State Route 878|NY 878]], though most of the westbound side was never built. East of the airport, I-78 would have turned north on the [[Clearview Expressway]] (built north of Hillside Avenue in [[Queens]] and now [[Interstate 295 (New York)|I-295]]), run across the [[Throgs Neck Bridge]], and forked into two spurs, ending at [[Interstate 95 in New York|I-95]] via the [[Throgs Neck Expressway]] (now [[Interstate 695 (New York)|I-695]]) and the [[Bruckner Interchange]] via the [[Cross Bronx Expressway]] (now part of I-295).<ref>[http://www.dot.state.ny.us/tech_serv/high/tvwebpag.html NYSDOT - Traffic Count Information]</ref> |
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==History== |
==History== |
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Line 55: | Line 55: | ||
==Major intersections== |
==Major intersections== |
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*[[Interstate 81 in Pennsylvania| |
*[[Interstate 81 in Pennsylvania|I-81]] in [[Union Township, Lebanon County, Pennsylvania|Union Township, Pennsylvania]] |
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*[[U.S. Route 22 |
*[[U.S. Route 22 in Pennsylvania|US 22]] in Union Township and [[Upper Macungie Township, Lehigh County, Pennsylvania|Upper Macungie Township]] |
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*[[Interstate 476]] via |
*[[Interstate 476|I-476]] via US 22 near [[Allentown, Pennsylvania|Allentown]] |
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*[[Interstate 287]] in [[Bedminster Township, New Jersey|Bedminster, New Jersey]] |
*[[Interstate 287|I-287]] in [[Bedminster Township, New Jersey|Bedminster, New Jersey]] |
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*[[U.S. Route 1-9]] in [[Newark, New Jersey|Newark]] |
*[[U.S. Route 1-9|US 1-9]] in [[Newark, New Jersey|Newark]] |
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*[[Interstate 95 |
*[[Interstate 95 in Pennsylvania|I-95]] ([[New Jersey Turnpike]]) in Newark |
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==Auxiliary routes== |
==Auxiliary routes== |
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[[Image:Allentown-Bethlehem, Pennsylvania 1955 Yellow Book.jpg|thumb|150px|1955 map of I-178 and I-378]] |
[[Image:Allentown-Bethlehem, Pennsylvania 1955 Yellow Book.jpg|thumb|150px|1955 map of I-178 and I-378]] |
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All of I-78's [[List of auxiliary Interstate Highways|auxiliary routes]] serve New York City; however, none of these routes actually intersects I-78, following the route's truncation at the eastern end of the [[Holland Tunnel]]. |
All of I-78's [[List of auxiliary Interstate Highways|auxiliary routes]] serve New York City; however, none of these routes actually intersects I-78, following the route's truncation at the eastern end of the [[Holland Tunnel]]. |
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*[[Interstate 278]] runs from [[U.S. Route 1/9]] near [[Elizabeth, New Jersey]] over the [[Goethals Bridge]], through [[Staten Island]], over the [[Verrazano Narrows Bridge]] and through [[Brooklyn]] and [[Queens]], and across the [[Robert F. Kennedy Bridge|Triborough Bridge]] into [[the Bronx]] to end at [[Interstate 95 in New York| |
*[[Interstate 278|I-278]] runs from [[U.S. Route 1/9]] near [[Elizabeth, New Jersey]] over the [[Goethals Bridge]], through [[Staten Island]], over the [[Verrazano Narrows Bridge]] and through [[Brooklyn]] and [[Queens]], and across the [[Robert F. Kennedy Bridge|Triborough Bridge]] into [[the Bronx]] to end at [[Interstate 95 in New York|I-95]] at the [[Bruckner Interchange]]. I-278 was planned to extend west from Elizabeth to I-78 in [[Springfield, Union County, New Jersey]], and was to intersect I-78 at the east end of the [[Williamsburg Bridge]] in Brooklyn. Until 1972, I-278 ran along [[Interstate 895 (New York)|I-895]] and a proposed extension to I-95, while I-278 east of I-895 was I-878. |
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*[[Interstate 478]] is an unsigned designation for the [[Brooklyn-Battery Tunnel]], a spur from |
*[[Interstate 478|I-478]] is an unsigned designation for the [[Brooklyn-Battery Tunnel]], a spur from I-278 into [[lower Manhattan]]. Plans were made to continue it north along the [[West Side Highway]] ([[New York State Route 9A|NY 9A]]) to I-78 at the Holland Tunnel, but have been canceled. Older plans would have given it the same purpose — connecting I-78 with I-278 - but along the [[Manhattan Bridge]]. |
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*[[Interstate 678]] runs from I-278 at the [[Bruckner Interchange]] south over the [[Bronx-Whitestone Bridge]] to [[John F. Kennedy International Airport]]. It was to intersect |
*[[Interstate 678|I-678]] runs from I-278 at the [[Bruckner Interchange]] south over the [[Bronx-Whitestone Bridge]] to [[John F. Kennedy International Airport]]. It was to intersect I-78 at its south end. Original plans took I-678 west on the [[Grand Central Parkway]] to I-278. |
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*[[Interstate 878]] is an unsigned designation for part of [[New York State Route 878]], a short |
*[[Interstate 878|I-878]] is an unsigned designation for part of [[New York State Route 878|NY 878]], a short west–east freeway on the north edge of [[Kennedy Airport]]. It was once planned as part of I-78, and now intersects I-678. The number was assigned in 1989. |
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*A former [[Interstate 878 (1959)| |
*A former [[Interstate 878 (1959)|I-878]] existed from 1959 to 1972 along present I-278 east of [[Interstate 895 (New York)|I-895]]. (I-895 was part of I-278.) |
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In eastern Pennsylvania, [[Route 378 |
In eastern Pennsylvania, [[Pennsylvania Route 378|PA 378]] into downtown [[Bethlehem, Pennsylvania|Bethlehem]] was once [[Interstate 378|I-378]], but was redesignated as a state route after I-78 was rerouted to a new southerly alignment. An [[Interstate 178|I-178]] was initially planned as an extension into downtown [[Allentown, Pennsylvania|Allentown]], but was canceled due to local opposition. |
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==See also== |
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⚫ | |||
* {{portal-inline|Pennsylvania}} |
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* {{portal-inline|New Jersey}} |
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* {{portal-inline|New York}} |
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* {{portal-inline|New York City}} |
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* {{portal-inline|New York Roads}} |
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* {{portal-inline|U.S. Roads}} |
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==References== |
==References== |
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⚫ | |||
{{reflist}} |
{{reflist}} |
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==External links== |
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* {{Commons category-inline}} |
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{{interstates}} |
{{interstates}} |
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{{Lehigh Valley Travel|state=collapsed}} |
{{Lehigh Valley Travel|state=collapsed}} |
Revision as of 02:18, 10 November 2013
![]() | |
Route information | |
Length | 143.56 mi[1] (231.04 km) |
Existed | 1957–present |
NHS | Entire route |
Major junctions | |
West end | ![]() |
![]()
![]() ![]() | |
East end | Canal Street in New York, NY |
Location | |
Country | United States |
Highway system | |
Interstate 78 (abbreviated I-78) is an Interstate Highway in the Northeast United States, running 144 miles (231 km) from Interstate 81 northeast of Harrisburg, Pennsylvania, through Allentown, Pennsylvania, and western and northern New Jersey to the Holland Tunnel and 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, and sees over 4 million trucks annually, with trucks representing 24% of all traffic. Truck traffic on the road is projected to rise once the widening of the Panama Canal is completed in 2015, when more Asian ships are expected to use East Coast ports.[2]
Route description
Pennsylvania
![](https://upload.wikimedia.org/wikipedia/commons/thumb/4/46/Interstate_78_and_81_junction%2C_northbound.jpg/220px-Interstate_78_and_81_junction%2C_northbound.jpg)
I-78 begins at a directional-T interchange with I-81 in Union Township, Lebanon County, Pennsylvania, about {{convert|25|mi|km]] northeast of Harrisburg. Near the east end of the county, at exit 8, U.S. Route 22 (US 22) merges with I-78, running concurrently for the next 43 miles (69 km).[3]
At exit 51, in Upper Macungie Township, US 22 leaves the highway. Passengers traveling on I-78 eastbound must use this exit to access I-476 (Northeast Extension of the Pennsylvania Turnpike), and westbound travelers must use exit 53 (northbound Pennsylvania Route 309 (PA 309}) and then westbound US 22. From exits 53 to 60, I-78 runs concurrently with PA 309. The six-lane overlap bypasses the City of Allentown to the south and crosses South Mountain.[4][5]
At exit 60 (A-B going westbound), PA 309 south leaves for Quakertown.[6] 6 miles (9.7 km) later, there is an interchange between PA 412 and I-78 in Hellertown. PA 412 also goes to Bethlehem and Lehigh University. At mile marker 71, PA 33 intersects with I-78 at a trumpet interchange. PA 33 traverses the Pocono Mountains and goes to Bangor and I-80. The final exit on I-78 in Pennsylvania is for Morgan Hill Road, which goes to PA 611 and Easton. I-78 then crosses the Interstate 78 Toll Bridge and enters New Jersey.
New Jersey
After the Interstate 78 Toll Bridge, I-78 enters New Jersey as the Phillipsburg–Newark Expressway.[7] The road begins by running parallel with County Route 642 (CR 642) in the town of Alpha. At 3.94 miles (6.34 km), Exit 3, a partial cloverleaf interchange brings together US 22, NJ 122, and NJ 173 with Interstate 78 in Phillipsburg.[8] US 22 now runs concurrently with I-78 for the next 15 miles (24 km). Going westbound, exit 4 leaves to the right for CR 637 and Warren Glen. The next exit, Exit 6, is for CR 632 in Bloomsbury. However the route number is not signed on I-78. Exit 7 is the first of several eastbound exits for NJ 173. This one is located in Bloomsbury as NJ 173 begins to parallel the interstate. 4 miles (6.4 km) later, Exit 11 leaves to the right as another exit for NJ 173. CR 614 also is located off the exit. Exit 12, westbound is for NJ 173 again. However, Exit 12 eastbound is for a frontage road parallelling I-78.
![](https://upload.wikimedia.org/wikipedia/commons/thumb/9/9f/NJ_guide_sign.jpg/220px-NJ_guide_sign.jpg)
Exit 13 is only westbound and is another exit for NJ 173. Nearby the exit, going eastbound, the frontage road merges in.[8] Exit 15 is for NJ 173 and CR 513 in Franklin Township. Exit 17 is for NJ 31 in Clinton. In the town of Annandale, US 22 leaves I-78 at exit 18. US 22 continues towards Bound Brook and Union County. At exit 20, CR 639 intersects. CR 639 heads towards the Round Valley Recreational Area. Exit 24 is for CR 523 towards Oldwick. At exit 29, I-287, US 202, and US 206 interchange with I-78 in Bedminster. At this point, in Somerset County, Exits 33, 36 and 40 are for county routes in Warren Township. At exit 41, I-78 enters Union County.[8] At exit 45, CR 527 intersects after paralleling for some time. West of exit 48, I-78 splits into express and local highways. Exit 48 is for NJ 24 in Springfield. Exit 49A is for one of Route 24's spur routes, NJ 124. Exit 52 is for the Garden State Parkway in Union. At Exits 57 and 58, NJ 21, US 1, US 9, and US 22 intersect I-78. The exit provides access to Newark Liberty International Airport.
![](https://upload.wikimedia.org/wikipedia/commons/thumb/c/cf/I-78_NJTPX_EB.jpg/200px-I-78_NJTPX_EB.jpg)
East of exit 58 at the eastern tip of Newark, I-78 becomes the Newark Bay Extension of the New Jersey Turnpike. Past the first toll plaza, I-78 has an interchange with I-95 (The New Jersey Turnpike) and crosses Newark Bay via the Newark Bay Bridge.[8] The first exit, 14A, is for NJ 440 in Bayonne. The Liberty State Park can be reached by taking Exit 14B. Exit 14C is the final numbered exit, providing access to the Liberty Science Center. NJ 139 runs concurrently with I-78 as it approaches the Holland Tunnel and enters New York State.
New York City
I-78's length in New York is only 0.5 miles (0.80 km) - half of the Holland Tunnel and the egress-only roundabout immediately beyond the end of the tunnel. The route was planned to run east and north through New York City to end at I-95 in the Bronx, but sections of the planned route, including the Lower Manhattan Expressway, were cancelled.
![](https://upload.wikimedia.org/wikipedia/commons/thumb/8/8e/Holland_tunnel.jpg/200px-Holland_tunnel.jpg)
In New York City, I-78 continues through the limited access egress-only roundabout known as the Saint John's Rotary. The five separate exits from the Rotary are assigned numbers — exits 1 to 5 - in counterclockwise order. The last one — and the logical continuation east — is Exit 5, Canal Street. Under the original plans, I-78 was to continue across Manhattan as the Lower Manhattan Expressway onto the Williamsburg Bridge, and then beyond I-278 on the never-built Bushwick Expressway through Brooklyn into Queens near the John F. Kennedy Airport. A section of I-78 at the airport was built as the Nassau Expressway, later I-878 and now NY 878, though most of the westbound side was never built. East of the airport, I-78 would have turned north on the Clearview Expressway (built north of Hillside Avenue in Queens and now I-295), run across the Throgs Neck Bridge, and forked into two spurs, ending at I-95 via the Throgs Neck Expressway (now I-695) and the Bruckner Interchange via the Cross Bronx Expressway (now part of I-295).[9]
History
Major intersections
- I-81 in Union Township, Pennsylvania
- US 22 in Union Township and Upper Macungie Township
- I-476 via US 22 near Allentown
- I-287 in Bedminster, New Jersey
- US 1-9 in Newark
- I-95 (New Jersey Turnpike) in Newark
Auxiliary routes
![](https://upload.wikimedia.org/wikipedia/commons/thumb/6/6e/Allentown-Bethlehem%2C_Pennsylvania_1955_Yellow_Book.jpg/150px-Allentown-Bethlehem%2C_Pennsylvania_1955_Yellow_Book.jpg)
All of I-78's auxiliary routes serve New York City; however, none of these routes actually intersects I-78, following the route's truncation at the eastern end of the Holland Tunnel.
- I-278 runs from U.S. Route 1/9 near Elizabeth, New Jersey over the Goethals Bridge, through Staten Island, over the Verrazano Narrows Bridge and through Brooklyn and Queens, and across the Triborough Bridge into the Bronx to end at I-95 at the Bruckner Interchange. I-278 was planned to extend west from Elizabeth to I-78 in Springfield, Union County, New Jersey, and was to intersect I-78 at the east end of the Williamsburg Bridge in Brooklyn. Until 1972, I-278 ran along I-895 and a proposed extension to I-95, while I-278 east of I-895 was I-878.
- I-478 is an unsigned designation for the Brooklyn-Battery Tunnel, a spur from I-278 into lower Manhattan. Plans were made to continue it north along the West Side Highway (NY 9A) to I-78 at the Holland Tunnel, but have been canceled. Older plans would have given it the same purpose — connecting I-78 with I-278 - but along the Manhattan Bridge.
- I-678 runs from I-278 at the Bruckner Interchange south over the Bronx-Whitestone Bridge to John F. Kennedy International Airport. It was to intersect I-78 at its south end. Original plans took I-678 west on the Grand Central Parkway to I-278.
- I-878 is an unsigned designation for part of NY 878, a short west–east freeway on the north edge of Kennedy Airport. It was once planned as part of I-78, and now intersects I-678. The number was assigned in 1989.
- A former I-878 existed from 1959 to 1972 along present I-278 east of I-895. (I-895 was part of I-278.)
In eastern Pennsylvania, PA 378 into downtown Bethlehem was once I-378, but was redesignated as a state route after I-78 was rerouted to a new southerly alignment. An I-178 was initially planned as an extension into downtown Allentown, but was canceled due to local opposition.
See also
References
- ^ Federal Highway Administration (2002-10-31). "FHWA Route Log and Finder List: Table 1". Retrieved 2007-03-28.
- ^ "Delaware River I-78 ORT to open soon". TollRoadsNews. May 6, 2010. Retrieved 2010-08-19.
- ^ Google (2007-08-31). "overview map of I-78 in Lebanon, Berks, and Lehigh Counties" (Map). Google Maps. Google. Retrieved 2007-08-31.
- ^ Google (2007-08-31). "overview map of I-78 southeast of Allentown" (Map). Google Maps. Google. Retrieved 2007-08-31.
- ^ Google (2007-08-31). "overview Satellite Image of I-78 with six lanes" (Map). Google Maps. Google. Retrieved 2007-08-31.
- ^ Google (2007-08-31). "Interstate 78 in Pennsylvania" (Map). Google Maps. Google. Retrieved 2007-08-31.
- ^ New Jersey Department of Transportation. "Interstate 78 straight line diagram" (PDF). Retrieved 2007-08-31.
- ^ a b c d Google (2007-08-31). "I-78, New Jersey, United States" (Map). Google Maps. Google. Retrieved 2007-08-31.
- ^ NYSDOT - Traffic Count Information
External links
Media related to Interstate 78 at Wikimedia Commons