Known at the time as “America’s Super Highway,” the Pennsylvania Turnpike opened in 1940 as the first limited-access highway in the country. Considered state of the art, it served as a model for the Interstate Highway System and other freeways. But the road’s popularity resulted in miles-long backups at its tunnels. (The turnpike was also known as the “tunnel highway” because it traversed seven tunnels.) To alleviate congestion, two additional tunnels were bored. Eventually, a 13-mile stretch of the turnpike was abandoned in favor of a more modern bypass that opened in 1968. But the old highway has not been completely forgotten. It’s been used as a roadway test site and a movie location. Not officially open to the public, it is popular with bikers, hikers and explorers.
Traffic used to back up for miles outside the Sideling Hill Tunnel, which narrows to one lane in each direction.
Large ventilation fans once kept carbon monoxide levels safe for motorists in the tunnels.
A bicyclist pauses after passing through the Rays Hill Tunnel.
The road surface is slowly being reclaimed by vegetation.
This farm, which is adjacent to the abandoned stretch of the turnpike, is no longer subjected to the roar of turnpike traffic.
The state-owned China Railway Rolling Stock Corp is building rail cars for some of America's biggest cities, prompting cybersecurity concerns and bipartisan legislation in the U.S. Senate.
This marks the third time Gwinnett County has rejected a plan to expand the city's public transit. But advocates hope the defeat is only temporary.
Faulty septic systems are making pollution and health problems worse in much of the country. What we don’t know is how much worse.
Fargo, North Dakota’s most populous city, faces the threat of flooding nearly every spring. It’s taken a lot of creativity and cooperation to agree on a solution.
Three governors -- two Democrats and a Republican -- say the big tax hikes are needed to address their road and transportation problems.
After PG&E's bankruptcy and downgrades, S&P says more could follow if the state doesn't reform utility regulations.