Pennsylvania Route 117 is a 12 miles (19.3 km) long route starting at its southern terminus at US 322

U.S. Route 322

U.S. Route 322 is a long, east–west United States Highway, traversing Ohio, Pennsylvania, and New Jersey. The road is a spur of U.S. Route 22 and one of the original highways from 1926...

 and PA 72

Pennsylvania Route 72

Pennsylvania Route 72 is a long north–south state route located in southeast Pennsylvania. The southern terminus of the route is at U.S. Route 222 and Pennsylvania Route 272 in downtown Lancaster. The northern terminus is at Pennsylvania Route 443 north of Lickdale in Swatara Township.It...

 in Cornwall

Cornwall, Pennsylvania

Cornwall is a borough in Lebanon County, Pennsylvania, United States. It is part of the Lebanon, PA Metropolitan Statistical Area. The population was 3,486 at the 2000 census.-History:...

. Its northern terminus is at US 422

U.S. Route 422

U.S. Route 422 is a long spur route of US 22 split into two segments in the U.S. states of Ohio and Pennsylvania. The western spur begins in downtown Cleveland, Ohio, and ends at Ebensburg, Pennsylvania...

 in Palmyra

Palmyra, Pennsylvania

Palmyra is a borough in Lebanon County, Pennsylvania, United States. It is part of the Lebanon, PA Metropolitan Statistical Area. The population was 7,096 at the 2000 census.-Geography:Palmyra is located at ....

.

The route is known as Iron Master Road, Main Street, Lancaster Road, and Forge Road and completely travels through Lebanon County

Lebanon County, Pennsylvania

As of the census of 2000, there were 120,327 people and 32,771 families residing in the county. The population density was 332 people per square mile . There were 49,320 housing units at an average density of 136 per square mile...

. One section is concurrent with Pennsylvania Route 241

Pennsylvania Route 241

Pennsylvania Route 241 is a 23 mile long state highway in the U.S. state of Pennsylvania. The route runs from Pennsylvania Route 441 in Conoy Township, Lancaster County northeast to Pennsylvania Route 72 in the city of Lebanon in Lebanon County....

 in Colebrook. PA 117 was signed in 1928.
Pennsylvania Route 117 heads west from an interchange with US 322 and PA 72 into West Cornwall Township

West Cornwall Township, Pennsylvania

West Cornwall Township is a township in Lebanon County, Pennsylvania, United States. It is part of the Lebanon, PA Metropolitan Statistical Area...

 on Mount Gretna Road.