The Susquehanna Valley is a region of low-lying land that borders the Susquehanna River in the U.S. states of New York , Pennsylvania , and Maryland . The valley consists of areas that lie along the main branch of the river, which flows from Upstate New York through Pennsylvania and Maryland into the Chesapeake Bay , as well as areas that lie along the shorter West Branch in Pennsylvania.
4-868: As of 2014, seventeen of the oldest covered bridges in the United States were located in the Susquehanna Valley. Historians and environmentalists at the Chesapeake Conservancy have described the Susquehanna River as the "lifeblood" of the Chesapeake Bay and also as "extension of the Susquehanna Valley that the Atlantic Ocean has steadily flooded over the last 15,000 years." Within Pennsylvania,
8-661: The U.S. state of Pennsylvania . Other bridges and tunnels on the National Register of Historic Places in Pennsylvania are listed elsewhere . In the early 1800s, the first covered bridge in the United States was constructed by Timothy Palmer crossing the Schuylkill River at 30th Street in Philadelphia . This new bridge type, wooden with a covered span, was developed because traditional European methods, typically stone bridges, were not appropriate for
12-524: The Susquehanna Valley is linked inextricably with the Chesapeake Bay watershed, which extends from Virginia, West Virginia, Washington, D.C., and Maryland through Delaware, Pennsylvania and New York. Pennsylvania's connections to the watershed are "primarily in the counties along the Susquehanna River, the West Branch of the Susquehanna, and their tributaries," according to Shelby Splain. "Located in
16-540: The middle of the commonwealth, about half of the land in Pennsylvania drains into it." 41°58′N 75°45′W / 41.967°N 75.750°W / 41.967; -75.750 List of covered bridges on the National Register of Historic Places in Pennsylvania Download coordinates as: This is a list of covered bridges on the National Register of Historic Places in
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