Skip to main content

Lehigh Tunnels Twin Tubing 1989-1991

On April 1, 1957, the 47 of the remaining 73 miles of the Pennsylvania Turnpike's Northeast Extension opened to traffic.  Included in the new highway was the 4,461 foot Lehigh Tunnel, a two lane tube through the Blue Mountain.  However by 1970, concerns over the levels of traffic through the 13 year old tunnel were growing.  Throughout the 1960's the Turnpike either twinned or bypassed the seven tunnels on the mainline system.  For over a decade, various proposals were introduced but tight economic times did not allow for proactive construction.  Finally, in 1985, Act 61 authorized new funding for the Pennsylvania Turnpike System.  The legislation approved funding for the twinning of the Lehigh Tunnels. Studies began almost immediately and construction began early in 1989.  Construction would last for nearly two and a half years, ending with the opening of the new facility on November 22, 1991.
 
Throughout the 32 months of construction, Bill Symons took photographs of the progress made.  He begins with an untouched south portal in 1989 to the tunnels a few weeks before opening in the fall of 1991. 

South Portal: 
Excavation work can be seen on this 1989 shot approaching the southern portal of the Lehigh Tunnel. (Bill Symons)
If you were heading northbound on PA 9 in 1989, you would not see much of any sign of construction work entering the tunnel.  This photo gives an excellent perspective of how the highway would narrow upon entering the tunnel. (Bill Symons)

Here is what the completed twin tubes look like nearly 20 years later.  (Doug Kerr, April 2007)

 North Portal:


Be sure to notice the change in the hillside from this photo in 1989 and the following two.  Excavation work has begun and the concrete superstructure is beginning to take form. (Bill Symons)

Substantial progress can be seen by the Autumn of 1990.  A wide double yellow line and guard rail is all that separates the opposite direction of traffic entering and exiting the tunnel. (Bill Symons)

The tunnel is near completion in this Fall 1991 photo.  The hillside has been landscaped and a cement slope and retaining wall has been built.  A temporary concrete barrier has also been placed to divide the then current north and southbound traffic.

Site Navigation:

Comments

Popular posts from this blog

North Carolina Continues to Move Forward with Rail

2023 and the first half of 2024 have seen continued growth in North Carolina's passenger rail system.  From increased daily trains from Raleigh to Charlotte, federal funds for studying additional corridors, and receiving a historic grant to begin the construction of high-speed rail between Raleigh and Richmond, the last 18 months have been a flurry of activity at NCDOT's Rail Division.  And that's just the tip of the iceberg. As ridership and routes increase - the engine of North Carolina passenger rail trains will become a more common sight. (Adam Prince) Increased Passenger Train Service: On July 10, 2023, a fourth Piedmont round-trip rail service between Raleigh and Charlotte commenced.  The four Piedmont trains plus the daily Carolinian (to Washington, DC, and New York) bring the total of trains serving the two cities daily to five. The current daily Piedmont and Carolinian schedule between Charlotte and Raleigh (NCDOT) The result was over 641,000 passengers utilized pa

US Route 101 in Benbow, Garberville and Redway

The communities of Benbow, Garberville and Redway can all be found along US Route 101 within southern Humboldt County.  The former surface alignment of US Route 101 in Garberville and Redway once crossed the Garberville Bluffs along what is now Redwood Drive via a corridor constructed as part of the Redwood Highway during the 1910s.  US Route 101 through Benbow, Garberville and Redway was modernized by 1935.  US Route 101 would eventually be upgraded to freeway standards in Benbow, Garberville and Redway by extension of the Redwood Freeway during 1966-68.  As the cover photo the original grade of US Route 101 and the Redwood Highway can be seen at the Garberville Bluffs during 1934.  US Route 101 can be seen in the communities of Benbow, Garberville and Redway on the 1935 Division of Highways Map of Humboldt County .   The history of US Route 101 in Benbow, Garberville and Redway Benbow, Garberville and Redway lie on the banks of the South Fork Eel River of southern Humboldt County.  D

The Midway Palm and Pine of US Route 99

Along modern day California State Route 99 south of Avenue 11 just outside the City limits of Madera one can find the Midway Palm and Pine in the center median of the freeway.  The Midway Palm and Pine denotes the halfway point between the Mexican Border and Oregon State Line on what was US Route 99.  The Midway Palm is intended to represent Southern California whereas the Midway Pine is intended to represent Northern California.  Pictured above the Midway Palm and Pine can be seen from the northbound lanes of the California State Route 99 Freeway.   This blog is part of the larger Gribblenation US Route 99 Page.  For more information pertaining to the other various segments of US Route 99 and it's three-digit child routes check out the link the below. Gribblenation US Route 99 Page The history of the Midway Palm and Pine The true timeframe for when the Midway Palm and Pine (originally a Deadora Cedar Tree) were planted is unknown.  In fact, the origin of the Midway Palm and Pine w