Based on the latest information available, the boat ramp named PA 145 North Whitehall Township is a concrete boat ramp located in North Whitehall Township, Pennsylvania. It has a width of approximately 20 feet and is suitable for launching small and medium-sized watercraft.

This boat ramp services the Lehigh River, which is a popular destination for fishing, boating, and other water-related activities. The Lehigh River is a 109-mile-long river that runs through eastern Pennsylvania and is known for its scenic beauty and abundant wildlife.

According to the Pennsylvania Fish and Boat Commission, the Lehigh River is open to all types of boats, including canoes, kayaks, rowboats, and motorized boats. However, there are restrictions on the use of motorized boats in certain areas, so it's important to check local regulations before launching.

In summary, the PA 145 North Whitehall Township boat ramp is a concrete ramp with a width of approximately 20 feet that services the Lehigh River in Pennsylvania. It is suitable for launching small and medium-sized watercraft, and the Lehigh River is open to all types of boats, including canoes, kayaks, rowboats, and motorized boats.