Road Information

Interstate 78 in Pennsylvania Total Mileage in State: 77 miles
Eastern End: At New Jersey state line
Western End: At I-81, near Jonestown
Mileage covered in Photos: 77 miles
Counties covered in Photos: Northampton, Lehigh, Berks, Lebanon
Major Junctions in Photos: PA 309, in Allentown
PA 61, near Hamburg
I-81, near Jonestown  
Control Cities in Photos: Easton, Bethlehem, Allentown, Hamburg

Westbound

   

Pennsylvania welcome sign as Interstate 78 West enters the Keystone State from New Jersey, after crossing the Delaware River.  (Photo taken 8/10/15).

Interstate 78 West approaching the toll plaza for the Interstate 78 Toll Bridge over the Delaware River, which we've already crossed - 3/4 mile.  (Photo taken 8/10/15).

The toll for automobiles is $1.00.  (Photo taken 8/10/15).

EZ Pass tagholders can keep to the left for the express toll lanes. Cash customers should stay right and enter the toll plaza. Also, traffic headed to the Welcome Center and Exit 75 should remain to the right.  (Photo taken 8/10/15).

Interstate 78 West assurance shield approaching the toll plaza.  (Photo taken 8/10/15).

Interstate 78 West at the toll plaza for the Interstate 78 Toll Bridge, located at mile marker 76.2.  (Photo taken 8/10/15).

At the toll plaza, you can see that this sign for the Welcome Center. The ramp to the Welcome Center is immediately, and I mean IMMEDIATELY, on the other side of the toll plaza.  (Photo taken 8/10/15).

Interstate 78 West at the ramp to the Welcome Center, located at mile marker 76.1.  (Photo taken 8/10/15).

Take Exit 75 to Crayola Attractions and Lafayette College.  (Photo taken 8/10/15).

Interstate 78 West at Exit 75: To PA 611 - Easton / Philadelphia  (Photo taken 8/10/15).

Mileage sign just past Exit 75. It's 9 miles to Bethlehem, 15 miles to Allentown, and 98 miles to Harrisburg.  (Photo taken 8/10/15).

View on Interstate 78 West.  (Photo taken 8/10/15).

Interstate 78 West at Exit 71: PA 33 North / To US 22 - Stroudsburg  (Photo taken 8/10/15).

Interstate 78 West: Road view from mile marker 71.  (Photo taken 8/10/15).

Speed limit sign at mile marker 70.3. The speed limit on Interstate 78 West starts out at 65 mph, which is standard on most rural Interstates in Pennsylvania.  (Photo taken 8/10/15).

Interstate 78 West at mile marker 70, as the truck climbing lane prepares to come to an end.  (Photo taken 8/10/15).

Take Exit 67 to Lehigh University and Historic Bethlehem.  (Photo taken 8/10/15).

Interstate 78 West at Exit 67: PA 412 - Hellertown / Bethlehem  (Photo taken 8/10/15).

Interstate 78 West assurance shield.  (Photo taken 8/10/15).

Interstate 78 West at mile marker 66.  (Photo taken 8/10/15).

Interstate 78 West: Road view from mile marker 65.  (Photo taken 8/10/15).

Interstate 78 West at mile marker 63.9.  (Photo taken 8/10/15).

Interstate 78 West entering Lehigh County, at mile marker 63.  (Photo taken 8/10/15).

Take Exit 60B to Allentown Center City and Exit 60A to DeSales University.  (Photo taken 8/10/15).

At mile marker 61.5, the speed limit decreases to 55 mph and remains that way for quite a while as we continue west on Interstate 78.  (Photo taken 8/10/15).

Interstate 78 West at Exit 60B: PA 145 North - South 4th St  (Photo taken 8/10/15).

Interstate 78 West at Exit 60A: PA 309 South - Quakertown  (Photo taken 8/10/15).

Sign at mile marker 59.5 listing the distances to the upcoming Allentown and Emmaus exits.  (Photo taken 8/10/15).

Another Interstate 78 West assurance shield.  (Photo taken 8/10/15).

Interstate 78 West at Exit 58: Emaus Ave South  (Photo taken 8/10/15).

Interstate 78 West at Exit 57: Lehigh St  (Photo taken 8/10/15).

Sign listing the distances to the two remaining Allentown exits.  (Photo taken 8/10/15).

Interstate 78 West at Exit 55: PA 29 - Cedar Crest Boulevard  (Photo taken 8/10/15).

Take Exit 54A to Reading and Exit 54B to Dorney Park and Wildwater Kingdom.  (Photo taken 8/10/15).

Interstate 78 West at Exit 54B: US 222 North - Hamilton Boulevard  (Photo taken 8/10/15).

Interstate 78 West at Exit 54A: US 222 South - Hamilton Boulevard  (Photo taken 8/10/15).

Interstate 78 West at Exit 53: PA 309 North / To Interstate 476 (PA Turnpike Northeastern Extension) - Tamaqua  (Photo taken 8/10/15).

Interstate 78 West assurance shield located just past Exit 53.  (Photo taken 8/10/15).

Mileage sign on Interstate 78 West. It's 4 miles to the next exit, which is the junction of PA 100, and it's 76 miles to Harrisburg.  (Photo taken 8/10/15).

View on Interstate 78 West. This kind of congestion is pretty standard on I-78.  (Photo taken 8/10/15).

Interstate 78 West at mile marker 50.3, as we get another look at the commonly congested I-78.  (Photo taken 8/10/15).

Interstate 78 West at Exit 49B: PA 100 North - Fogelsville  (Photo taken 8/10/15).

Interstate 78 West at Exit 49A: PA 100 South - Trexlertown  (Photo taken 8/10/15).

Dual Interstate 78 West / US 22 West assurance shields at mile marker 49.2.  (Photo taken 8/10/15).

Mileage sign located at mile marker 48.9. It's 4 miles to New Smithville and 72 miles to Harrisburg.  (Photo taken 8/10/15).

Interstate 78 West at mile marker 47.7.  (Photo taken 8/10/15).

Interstate 78 West approaching Exit 45 - 1/2 mile.  (Photo taken 8/10/15).

Interstate 78 West at Exit 45: PA 863 - Lynnport / New Smithville  (Photo taken 8/10/15).

Interstate 78 West: Road view from mile marker 45.  (Photo taken 8/10/15).

Another set of Interstate 78 West / US 22 West assurance shields.  (Photo taken 8/10/15).

Speed limit sign near mile marker 44. The speed limit has been 55 mph since we were east of Allentown, and it remains that way for a big longer. I see no logic behind it.  (Photo taken 8/10/15).

Interstate 78 West entering Berks County.  (Photo taken 8/10/15).

Interstate 78 West: Road view from mile marker 43.  (Photo taken 8/10/15).

Interstate 78 West at Exit 40: PA 737 - Kutztown / Krumsville  (Photo taken 8/10/15).

Interstate 78 West at mile marker 38.2.  (Photo taken 8/10/15).

Another speed limit sign near mile marker 37. Still 55 mph......  (Photo taken 8/10/15).

Take Exit 35 to Crystal Cave.  (Photo taken 8/10/15).

Interstate 78 West at Exit 35: PA 143 - Lenhartsville  (Photo taken 8/10/15).

At mile marker 35, the speed limit finally increases to 65 mph once again.  (Photo taken 8/10/15).

Interstate 78 West at mile marker 32.  (Photo taken 8/10/15).

Interstate 78 West at Exit 30: Hamburg  (Photo taken 8/10/15).

Interstate 78 West at mile marker 30.  (Photo taken 8/10/15).

Interstate 78 West at Exit 29B: PA 61 North - Pottsville  (Photo taken 8/10/15).

Interstate 78 West at Exit 29A: PA 61 South - Reading  (Photo taken 8/10/15).

Interstate 78 West at Exit 23: Shartlesville  (Photo taken 8/10/15).

Interstate 78 West at Exit 19: PA 183 - Strausstown  (Photo taken 8/10/15).

Take Exit 17 to Conrad Weiser Homestead.  (Photo taken 8/10/15).

Interstate 78 West at Exit 17: PA 419 - Rehrersburg  (Photo taken 8/10/15).

Interstate 78 West at Exit 16: Midway  (Photo taken 8/10/15).

Interstate 78 West / US 22 West assurance shields at mile marker 15.3.  (Photo taken 8/10/15).

Interstate 78 West at Exit 15: Grimes  (Photo taken 8/10/15).

Interstate 78 West at Exit 13: PA 501 - Bethel  (Photo taken 8/10/15).

Interstate 78 West at Exit 10: PA 645 - Frystown  (Photo taken 8/10/15).

Interstate 78 West at mile marker 10.  (Photo taken 8/10/15).

Take Exit 8 to Cornwall Iron Furnace.  (Photo taken 8/10/15).

Interstate 78 West entering Lebanon County.  (Photo taken 8/10/15).

Interstate 78 West at Exit 8: US 22 West / To PA 343 - Lebanon / Fredericksburg  (Photo taken 8/10/15).

At mile marker 8, this sign indicates that Interstate 78 is also known as the 78th Division Highway.  (Photo taken 8/10/15).

Interstate 78 West: Road view from mile marker 6.8.  (Photo taken 8/10/15).

Interstate 78 West approaching Exits 1A-B - 2 miles.  (Photo taken 8/10/15).

Take Exit 1A for Interstate 81 North to PA 72 toward Lebanon.  (Photo taken 8/10/15).

Interstate 78 West: Road view from mile marker 2.  (Photo taken 8/10/15).

Keep to the right ahead for Exit 1A: Interstate 81 North. Stay straight to go onto Interstate 81 South.  (Photo taken 8/10/15).

Interstate 78 West at mile marker 1.  (Photo taken 8/10/15).

Interstate 78 West at Exit 1A: Interstate 81 North - Hazleton. Stay straight for Exit 1B: Interstate 81 South - Harrisburg.  (Photo taken 8/10/15).