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23-701: The Interstate 78 Toll Bridge ( I-78 Toll Bridge ) carries Interstate 78 across the Delaware River between Williams Township, Pennsylvania and Phillipsburg, New Jersey in the Lehigh Valley region of eastern Pennsylvania and western New Jersey in the United States. The bridge opened on November 21, 1989, and is operated by the Delaware River Joint Toll Bridge Commission (DRJTBC). As of 2008,

46-544: A beautiful backdrop to the viewpoints of the Lehigh Valley, including, at night, the city lights of Allentown. The southern end of the mountain extends west along U.S. Route 422 and the southeastern border of Berks County, providing views of Blue Mountain to the north, and Mount Penn , which comprises part of the prong and the city of Reading to the east. The southernmost peaks were at one time home to many exclusive sanitariums and resorts, now all defunct except for

69-688: A ridge of low mountains passing east of Reading , and then extends due west. South Mountain is a continuation of the New England Province and is the southern end of the Hudson Highlands . The mountain is a core geographic feature throughout much of the Pennsylvania side of the Lehigh Valley. The mountain is called the Reading Prong by geologists. Unlike Blue Mountain to its north, South Mountain does not follow

92-474: A straight geographic line. The mountain ranges in elevation between 500 and 1,300 feet (150 and 400 m) above sea level. The ridge is made of metamorphic rocks and gneiss , which date to the Precambrian era and range from about 570 million to 1,600 million years old. South Mountain is largely undeveloped in its northern extension due to conservation efforts and the mountain's steep slope. This makes it

115-535: Is not signed on I-78. Exit 7 in Bloomsbury is the first of several eastbound exits for Route 173, which runs parallel the Interstate. Four miles (6.4 km) later, exit 11 leaves to the right as another exit for Route 173. CR 614 is located off the exit. Exit 12 westbound is for Route 173 again. Exit 12 eastbound is for a frontage road paralleling I-78. Exit 13

138-568: Is only westbound and is another exit for Route 173. Nearby the exit, going eastbound, the frontage road merges in. Exit 15 is for Route 173 and CR 513 in Franklin Township . Exit 17 is for Route 31 in Clinton Township . In Annandale , US 22 leaves I-78 at exit 18. US 22 continues to Bound Brook and Union County . At exit 20, CR 639 intersects. CR 639 heads to

161-915: 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

184-567: The Liberty Science Center . Route 139 runs concurrently with I-78 along a one-way pair of surface streets as it approaches the Holland Tunnel and enters New York state. I-78's length in New York is 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

207-616: The Pocono Mountains as it enters Bangor and crosses I-80 . The final exit on I-78 in Pennsylvania is Morgan Hill Road, which accesses PA 611 and Easton . I-78 then crosses the I-78 Toll Bridge and enters New Jersey . After the I-78 Toll Bridge , I-78 enters New Jersey as the Phillipsburg–Newark Expressway . The road begins by running parallel with County Route 642 (CR 642) in

230-738: The Round Valley Reservoir . Exit 24 is for CR 523 to 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 and then passes through the Watchung Reservation , where land bridges cross over

253-652: The Bronx , but sections of the planned route, including the Lower Manhattan Expressway , were canceled. In New York City, I-78 continues through the 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. Exit 5, the last eastbound exit, leads onto Canal Street . Under original plans, I-78

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276-582: The I-78 Toll Bridge increased to $ 1.50 for motorists entering Pennsylvania with E-ZPass and $ 3.00 for motorists entering Pennsylvania without E-ZPass. Interstate 78 Interstate 78 ( I-78 ) is an east–west Interstate Highway in the Northeastern United States that runs 144 miles (232 km) from I-81 northeast of Harrisburg, Pennsylvania , through Allentown to western and North Jersey , terminating at

299-551: The bridge carried an average of 56,100 vehicles daily. The span has an overall length of 1,222 feet (372 m) and is a twin four girder span. A toll is charged only for traffic heading west into Pennsylvania. The toll plaza has four conventional lanes and two Express E-ZPass lanes. Just after the toll plaza is the Pennsylvania Welcome Center. The jurisdiction of the DRJTBC for the bridge extends between

322-480: The city of Allentown to the south and crosses South Mountain . At exit 60 (A–B going westbound), PA 309 yields south to Quakertown . Approximately six miles (9.7 km) east, there is an interchange between PA 412 and I-78 in Hellertown , serving Bethlehem and Lehigh University . At exit 71, PA 33 reaches its southern terminus at a trumpet interchange . PA 33 traverses

345-681: 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 (New Jersey Turnpike) and crosses Newark Bay via the Newark Bay Bridge . The first exit, 14A, is for Route 440 in Bayonne . Liberty State Park can be reached by taking exit 14B. Exit 14C is the final numbered exit, providing access to

368-429: The first interchange on either side of the bridge, which includes 2.2 miles (3.5 km) west along I-78 to just west of exit 75 in Pennsylvania and 4.2 miles (6.8 km) east in New Jersey to exit 3. Tolls on the Interstate 78 Toll Bridge are incurred only by motorists leaving New Jersey and entering Pennsylvania. There is no toll for those leaving Pennsylvania and entering New Jersey. On January 7, 2024, tolls on

391-800: The highway to allow for the safe passage of wildlife. 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 Route 24 in Springfield Township . Exit 49A is for one of Route 24's spur routes, Route 124 . Exit 52 is for the Garden State Parkway in Union Township . At exits 57 and 58, Route 21 , US 1 , US 9 , and US 22 intersect I-78. The exit provides access to Newark Liberty International Airport . East of exit 58 at

414-544: The nation. 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 . I-78 begins at a directional T interchange with I-81 in Union Township , about 25 miles (40 km) northeast of Harrisburg . Near the east end of the county, at exit 8, U.S. Route 22 (US 22) merges with I-78, and runs concurrently for

437-732: The next 43 miles (69 km) through Berks and Lehigh counties. At exit 51, in Upper Macungie Township , US 22 leaves the highway. Drivers on I-78 eastbound must use this exit to access I-476 , also known as the 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

460-913: The plans, 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 , which is now I-695 and the Bruckner Interchange via the Cross Bronx Expressway , which is now part of I-295. All of I-78's auxiliary routes serve New York City; however, none of these routes actually intersect I-78, following

483-601: The route's truncation at the eastern end of the Holland Tunnel . In the Lehigh Valley region of eastern Pennsylvania, PA 378 , which exits in downtown Bethlehem was once I-378 but was predesignated as a state route after I-78 was rerouted to a new southerly alignment. I-178 was initially planned to extend in Center City Allentown , but local opposition to the plan led to it being cancelled. South Mountain (Eastern Pennsylvania) The mountain borders Emmaus just south of Allentown and comprises

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506-550: The town of Alpha . At 3.94 miles (6.34 km), a partial cloverleaf interchange brings together US 22 , Route 122 , and Route 173 with I-78 in Phillipsburg . 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 . The route number

529-680: Was to cross Manhattan as the Lower Manhattan Expressway onto the Williamsburg Bridge and then beyond I-278 on Bushwick Expressway through Brooklyn into Queens near the John F. Kennedy International Airport . A section of I-78 at the airport was built as the Nassau Expressway , later I-878 and now New York State Route 878 (NY 878), though most of the westbound side was never built. Under

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