Wikipedia:WikiProject U.S. Roads/Pennsylvania/Selected article/July 2012

Pennsylvania Route 546 (designated by the Pennsylvania Department of Transportation as State Route 0546) is an 3.51 mi long state highway in the northernmost regions of McKean County, Pennsylvania. The route, known locally as Oil Valley Road, begins at an intersection with Pennsylvania Route 346 in the community of Duke Center (located in Otto Township). The highway heads northward, through mountainous regions before crossing the state line and into New York, where it continues as Cattaraugus County Route 45 to New York State Route 16.

PA 546 was designated in the 1928 numbering of state highways in the commonwealth. The route was under construction and unpaved for two years afterward, and by 1930, the route was complete and has remained virtually intact since.