The abandoned Pennsylvania Turnpike is one instance of this, where two-lane tunnels were bypassed by four-lane cuts, and the old tunnels and approach roadways are being rehabilitated for a multi-use trail.
The abandoned Pennsylvania Turnpike is one instance of this, where two two-lane tunnels and four-lane approaches were bypassed with four-lane cuts. The old tunnels and approach roadways in this case are being rehabilitated for a multi-use trail.