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Interstate 81 north - Maryland line to Union Township

After a 12-mile jaunt through Washington County, Maryland, Interstate 81 enters Antrim Township, Franklin County in the Commonwealth of Pennsylvania. Exit 1, for Pennsylvania Route 163 (Mason Dixon Road), is on the state line, just north of Hagerstown. Photo taken 08-05-2016.

The northbound exit 1 offramp. Photo taken 08-05-2016.

As the ensuing onramp merges in, a dynamic message sign lists travel times to points northward; these points are often in the Chambersburg or Harrisburg hubs. Photo taken 08-05-2016.

The borough of Greencastle is served by the next two exits. Photo taken 08-05-2016.

The state's first northbound I-81 shield follows the first exit. Photo taken 08-05-2016.

A blue sign then points the way to the northbound welcome center, situated just beyond the Hykes Road overpass. Photo taken 08-05-2016.

The welcome center entrance and gore sign. Photo taken 08-05-2016.

Exit 3, formerly exit 2, intersects U.S. Route 11 (Molly Pitcher Highway), the legacy route paralleling I-81 during much of its length. Photo taken 08-05-2016.

Sheetz counts as "food" in the western two-thirds of Pennsylvania, and one is available at exit 3. Photo taken 08-05-2016.

The next advance sign for exit 3, now half a mile away, is rendered in Highway Gothic font rather than newer Clearview. Photo taken 08-05-2016.

Exit 3 is now about to be reached. Photo taken 08-05-2016.

The exit 3 gore. I-81 curves slightly to the right within the interchange. Photo taken 08-05-2016.

US 11 crosses over I-81 here, and switches from being to the east of I-81 to being to the west. Photo taken 08-05-2016.

Exit 5, the original exit 3, serves Pennsylvania Route 16, the borough of Greencastle and the city of Waynesboro, the latter of which is the central city, in terms of defined significance, of Franklin County's metropolitan area. Photo taken 08-05-2016.

The exit is now a mile away. Photo taken 08-05-2016.

There is more in the way of food at this exit. Photo taken 08-05-2016.

The Whitetail ski resort a distance westward can be accessed from this exit, as can the borough of Mercersburg. Photo taken 08-05-2016.

A Sheetz is also off this exit if you missed the last one. Photo taken 08-05-2016.

Exit 5 leaves the highway just ahead. PA 16 heads west-northwest to McConnellsburg in Fulton County, and east through Waynesboro and the Carroll Valley area of Adams County, before continuing into Maryland as MD 140. Photo taken 08-05-2016.

After I-81 crosses over PA 16, the northbound lanes receive the onramp from PA 16. Photo taken 08-05-2016.

An I-81 reassurance shield sits just beyond, as the highway transitions into more open land. Photo taken 08-05-2016.

Chambersburg and Carlisle, the seats of Franklin and Cumberland counties, are a respective 9 and 40 miles away. Photo taken 08-05-2016.

A field and a billboard sit just to the right of the northbound lanes here. Photo taken 08-05-2016.

The highway continues north, still a few miles from the next exit. Photo taken 08-05-2016.

In the meantime, a weigh station sits along the side of the highway for use by mandated vehicles. Photo taken 08-05-2016.

Soon, exit 10, Pennsylvania Route 914 toward Marion, is announced to be in two miles. Photo taken 08-05-2016.

Still more open land precedes exit 10. Photo taken 08-05-2016.

Exit 10 is reached, with I-81 curving very slightly leftward at the beginning of the interchange. Photo taken 08-05-2016.

On the other side of the interchange, I-81 receives the onramp from PA 914. Photo taken 08-05-2016.

I-81 reassurance then precedes another slight curve along the highway. Photo taken 08-05-2016.

Chambersburg and Carlisle are now 4 and 35 miles away. Photo taken 08-05-2016.

I-81's next three exits are billed as serving Chambersburg. Photo taken 08-05-2016.

Those exits are then listed, mentioned only by their street names. Photo taken 08-05-2016.

The first exit of the Chambersburg hub, exit 14 for Pennsylvania Route 316 (Wayne Avenue), is two miles away. Photo taken 08-05-2016.

The hotels available at exit 14 are listed as I-81 prepares to pass under Guilford Springs Road. A new exit here was planned in 2018 to accommodate warehouse development here. Photo taken 08-05-2016.

Chambersburg's central business district is off this exit. Photo taken 08-05-2016.

Exit 14 is one mile away as I-81 passes under Bowman Road. Photo taken 08-05-2016.

The highway curves to the right just before the exit. Photo taken 08-05-2016.

An AM radio frequency, 1670, is given here for traveler information, with flashers for an urgent message. Photo taken 08-05-2016.

I-81 reaches exit 14 and proceeds to cross over PA 316. Photo taken 08-05-2016.

The highway then gradually curves back to the left. Photo taken 08-05-2016.

The next exit is exit 16, U.S. Route 30, known here as Lincoln Way, a derivation of Lincoln Highway. Photo taken 08-05-2016.

Food options for exit 16 are shown here. Photo taken 08-05-2016.

Gettysburg can be reached from this exit, by taking US 30 several miles east. Photo taken 08-05-2016.

Exit 16 is reached, and the temporary third lane that appeared following the previous exit becomes the offramp here. Photo taken 08-05-2016.

Within exit 16, exit 17 for Walker Road is stated to be a mile away. Photo taken 08-05-2016.

I-81 crosses over US 30 here. Photo taken 08-05-2016.

Another third lane pops up prior to exit 17. Walker Road itself is paralleling the southbound lanes of I-81 here. Photo taken 08-05-2016.

The highway reaches exit 17, and the third lane disappears again. Walker Road primarily serves shopping centers on the northeast side of Chambersburg. Photo taken 08-05-2016.

Walker Road's bridge over I-81. Photo taken 08-05-2016.

I-81 is leaving Chambersburg behind amid this reassurance shield. Photo taken 08-05-2016.

Shippensburg, the next significant area along the highway, is 7 miles ahead, and Carlisle is in 28. Photo taken 08-05-2016.

Exit 20, Pennsylvania Route 997 serving Scotland, is two miles away. Photo taken 08-05-2016.

The Letterkenny Army Depot and the Mont Alto campus of Penn State are off exit 20. Photo taken 08-05-2016.

Exit 20 is now in one mile. Photo taken 08-05-2016.

Exit 20 is reached. PA 997 runs from the Maryland line south of Waynesboro to PA 233 in Cumberland County's Upper Mifflin Township. Photo taken 08-05-2016.

PA 997 crosses over I-81 on this bridge, more modern than several other bridges along this stretch of the highway. Photo taken 08-05-2016.

Following the onramp from PA 997 is an I-81 reassurance shield. Photo taken 08-05-2016.

Shippensburg and Carlisle are respectively 3 and 24 miles from this sign. Photo taken 08-05-2016.

The highway next passes under Pine Stump Road, which leads east to the parallel Pennsylvania Route 696. Photo taken 08-05-2016.

Shippensburg is the next hub along the highway, and the two exits are marked here as Fayette Street (PA 696, actually Olde Scotland Road at the interchange), and King Street (PA 174, Walnut Bottom Road, which leads to US 11 which actually bears that name within the borough). Photo taken 08-05-2016.

The renowned Shippensburg University is off the next exit, 24. Photo taken 08-05-2016.

Exit 24, PA 696 marked for Fayette Street as noted above, is a mile ahead. The highway curves slightly but noticeably just past this sign. Photo taken 08-05-2016.

I-81 passes a barn situated on the east side of the highway prior to the exit. Photo taken 08-05-2016.

Exit 24 is reached, and its northbound exit ramp goes uphill and curves before meeting PA 696 at a Sheetz station and an industrial park. Photo taken 08-05-2016.

PA 696 then crosses over I-81 before I-81 receives the onramp from it. Photo taken 08-05-2016.

Now bypassing Shippensburg, I-81's speed limit remains 65 miles per hour. Photo taken 08-05-2016.

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