Lehigh Gap

Lehigh Gap is a water gap where the Lehigh River cuts through the Blue Mountain, creating a natural passage between Carbon County in the north and Lehigh County in the south. The valley features steep rock walls on both sides and is crossed by Pennsylvania Route 248.

The area became an important transportation route in the 1800s when four separate railroad companies operated tracks through the gap. The Lehigh and New England Railroad built a bridge across the river that still stands as an abandoned structure.

The Delaware and Lehigh Heritage Corridor Trail intersects with the gap, providing opportunities for hiking and outdoor recreation along the historic transportation route.

The area is easily reached via Pennsylvania Route 248, which runs through the gap and connects larger cities like Allentown and Bethlehem with smaller communities. The Delaware and Lehigh Heritage Corridor Trail offers hiking with 15 miles of paths across 750 acres of managed land.

The Lehigh Gap Nature Center manages the site and focuses on ecological recovery after industrial mining left the area heavily polluted with lead and other contamination. Today visitors can observe how nature slowly returns to this once-damaged landscape.

Location: Washington Township

Location: East Penn Township

Location: Lehigh Township

Location: Lower Towamensing Township

GPS coordinates: 40.77667,-75.60833

Latest update: December 11, 2025 11:02