Pennsylvania Route 19, also known as PA 19, is a major state highway in Pennsylvania. It runs approximately 90 miles from the southern part of the state near Washington to the northern region near Erie. The route serves as an important connector for various towns and cities along its path. The highway passes through several counties, including Allegheny and Crawford, and is known for its scenic views and accessibility. PA 19 is often used for both local and through traffic, linking residential areas with commercial districts and providing access to recreational sites.