Interstate 78 in Pennsylvania

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Interstate 78
Main route of the Interstate Highway System
Length: 75.23 mi[1] (121.07 km)
West end: I-81 in Union Twp.
Major
junctions:
US 22 in Union Twp.
PA 61 near Hamburg
I-476/PA Tpk in Upper Macungie Twp.
PA 309 from Dorneyville to Summit Lawn
PA 33 in Bethlehem Twp.
East end: I-78 in Williams Twp.
Pennsylvania State Routes
< PA 77 PA 78 >
Legislative

Interstate 78 in Pennsylvania is an east-west route stretching from Union Township, Pennsylvania to New York City. I-78 runs for about 77 miles (124 km) in Pennsylvania, from the western terminus at Interstate 81 to New Jersey state line; I-78 continues into New Jersey.

Contents

[edit] Route description

Major cities
Bolded cities are officially-designated control cities for signs

I-78 starts in Pennsylvania at an interchange with Interstate 81. It merges with U.S. Route 22 in Lebanon County; the two run together for more than 45 miles from Bethel Township to Kuhnsville. Near Kuhnsville, U.S. Route 22 splits off from I-78 and becomes the Lehigh Valley Thruway. Near Hamburg at mile marker 29, it meets a major Pennsylvania route; Pennsylvania Route 61. At mile marker 53 after the departure of US 22, Pennsylvania Route 309 merges with I-78 for 7 miles. Dorney Park and Wildwater Kingdom is visible from the freeway approaching exit 54 for U.S. Route 222, which leads to the park. In Summit Lawn, State Route 309 leaves the freeway towards Quakertown at exit 60. Past Allentown and Bethlehem, Pennsylvania Route 33 meets I-78 at exit 71. The last exit in Pennsylvania is Exit 75/Morgan Hill Road which takes you to Pennsylvania Route 611. The Interstate crosses the Delaware River on the Interstate 78 Toll Bridge, leaving Pennsylvania for New Jersey.

[edit] History

Although built to modern-day Interstate Highway standards east of Pennsylvania Route 100, I-78 west of PA Rt. 100 was built mainly to 1960s standards, and have characteristic soft shoulders in most locations, and despite its rural location, a 55 m.p.h. speed limit which is heavily enforced by the Pennsylvania State Police. Prior to the late 1960s, I-78 was to be routed on the Lehigh Valley Thruway across to Phillipsburg, New Jersey; however, due to heavy opposition by residents of Phillipsburg, PennDOT and NJDOT opted to build the new southerly alignment that I-78 is routed on today.

[edit] February 2007

On February 14, 2007, I-78 was closed from Pennsylvania Route 100 in Fogelsville to the U.S. Route 22 split in Union Township due to a winter storm that caused two tractor trailers to make the highway impassable. Other roads like I-80 and I-81 were closed as well. Some passengers were stuck on I-78 for more than 20 hours. Governor Ed Rendell apologized to the hundreds of drivers that were stuck on I-78. The governor said that the I-78 mess was "unacceptable" and that those responsible for clearing the road had communicated poorly. I-78 reopened on February 17.

[edit] Exit list

County Location Mile # Destinations Notes
Lebanon Union Township 0.00 1A
I-81 south - Harrisburg
Westbound exit, eastbound entrance.
0.55 1B
I-81 north - Hazleton
Westbound exit, eastbound entrance.
To PA 72.
Bethel Township 5.85 6 PA 343 - Lebanon, Fredericksburg Eastbound exit, westbound entrance.
7.90 8
US 22 west/To PA 343 - Fredericksburg, Lebanon
Westbound exit, eastbound entrance.
Western terminus of I-78/ US 22 concurrency.
Berks Bethel Township 10.21 10 PA 645 - Frystown
Bethel 12.68 13 PA 501 - Bethel
Bethel Township 14.67 15 Grimes No Trucks.
15.40 16 Midway
16.58 17 PA 419 - Rehrersburg
Strausstown 18.65 19 PA 183 - Strausstown
Upper Bern Township 22.71 23 Shartlesville
Tilden Township 29.11 29A
PA 61 south - Reading
29.35 29B
PA 61 north - Pottsville
Hamburg 30.19 30 Hamburg
Greenwich Township 35.23 35 PA 143 - Lenhartsville
40.27 40 PA 737 - Krumsville, Kutztown
Lehigh Weisenberg Township 44.96 45 PA 863 - New Smithville, Lynnport
Upper Macungie Township 49.26
49.55
49A
PA 100 south - Trexlertown
49B
PA 100 north - Fogelsville
Eastern terminus of I-78/ US 22 concurrency.
50.89 51

US 22 east/To I-476/To PA 309 north - PA Turnpike/LVI Airport
Eastbound exit, westbound entrance.
South Whitehall 53.67 53
PA 309 north - Tamaqua
Westbound exit, eastbound entrance.
Western terminus of I-78/ PA 309 concurrency.
54.12 54A
US 222 south (Hamilton Boulevard)
Exit 54 eastbound. To Dorney Park & Wildwater Kingdom.
54.51 54B
PA 222 north (Hamilton Boulevard)
55.41 55 PA 29 (Cedar Crest Boulevard)
Allentown 57.20 57 Lehigh Street
57.63 58 Emmaus Avenue Westbound exit only.
Summit Lawn 58.83 59
To PA 145 - Summit Lawn
Eastbound exit, westbound entrance.
Eastern terminus of I-78/ PA 309 concurrency.
59.92 60A
PA 309 south - Quakertown
Exit 60 eastbound.
To DeSales University.
60.30 60B
PA 145 north - South 4th Street
Westbound exit, eastbound entrance.
Northampton Hellertown 66.36 67 PA 412 - Hellertown, Bethlehem To Lehigh University.
Bethlehem Township 71.04 71
PA 33 north/To US 22 - Stroudsburg
Southern terminus of PA 33.
Williams Township 75.00 75
PA 611 - Easton, Philadelphia
To Crayola Factory.
Easton 77.10 New Jersey/Pennsylvania state line.
I-78 continues into New Jersey on the Interstate 78 Toll Bridge over the Delaware River.
Westbound: $0.75 toll.

[edit] See also

[edit] References

  1. ^ Route Log - Main Routes of the Eisenhower National System Of Interstate and Defense Highways - Table 1


Interstate 78
Previous state:
Terminus
Pennsylvania Next state:
New Jersey