Lewisburg, Centre & Spruce Creek RR

Coburn Tunnel (Centre County, Pennsylvania)
Built 1877
Bridge on Former Pennsylvania RR/Lewisburg & Tyrone RR
Open to pedestrians only on unofficial basis

Penns Creek Path - Poe Paddy Tunnel (Mifflin County, Pennsylvania)
Built ca. 1880
Tunnel under West Paddy Mountain on State Park hiking trail (former Pennsylvania RR)
Open to pedestrians only