Friday, July 15, 2022

1928 Liberty Street Bridge over Monongahela River and 1924 Tunnels in Pittsburgh, PA

Tunnel: (Bridge Hunter; pghbridges; Satellite: North Portal, South Portal)

HAER PA,2-PITBU,64--12 (CT)
3/4 VIEW FROM RIVERBANK, FROM SOUTH. - Liberty Bridge, Spanning Monongahela River, East Carson Street & Second Avenue at State Route 3069, Pittsburgh, Allegheny County, PA

On the left side of this image you can see the concrete retaining wall above the tunnel's north portal. Also of interest is that there are still some industrial buildings along the river.
Street View

 On the left side, you can see some of the concrete of the tunnel portals.
Street View
 
Jackson-Township historical preservation added
Liberty Bridge in Pittsburgh on April 30, 1937.  The Liberty Bridge, which was completed in 1928, connects downtown Pittsburgh, Pennsylvania, to the Liberty Tunnels and the South Hills neighborhoods beyond. It crosses the Monongahela River and intersects Interstate 579 at its northern terminus. It was designed by George S. Richardson and cost $3,456,000 to build.
Ivan Rostosky: Mon Lock #1 prior to demolition seen to the right. Very Few good photos of it.
Clear view of the Armstrong Tunnels as well!

North Portal
Street View

South Portal
Street View

"This 2,663'-0", sixteen-span, $3.7 million Pratt deck truss bridge was the longest and most expensive bridge built in Allegheny County when it was completed in 1928. The bridge features two 450'-0" cantilevered main spans with suspended sections over the Monongahela River and deck girder approach spans on either side. The bridge links Pittsburgh's downtown area with the Liberty Tunnels, built through Mt. Washington in 1924. The opening of the tunnels and the bridge were instrumental in the development of Pittsburgh's South Hills suburbs. The Liberty Bridge was listed in the National Register of Historic Places in 1988." [HAER-data]
 
Jackson-Township historical preservation posted
South End of the Liberty Tunnels at 12:00 noon in Pittsburgh in 1940.

This photo of the Panhandle Bridge also has a good view of the Liberty Bridge and North Portal.
BrooklineConnection via Dennis DeBruler, License: Creative Commons Attribution-Share-Alike (CC BY-SA)

The 5,889' Liberty Tubes penetrate the 400' high, 5-mile long Mount Washington and provide access to the South Hills. [pghbridges-bridge, pghbridges-tunnel]
Postcard via BridgeHunter-bridge

Looking back the other way.
𝗥𝗲𝗺𝗲𝗺𝗯𝗲𝗿 𝗪𝗵𝗲𝗻: 𝗣𝗲𝗻𝗻𝘀𝘆𝗹𝘃𝗮𝗻𝗶𝗮 posted
Liberty Bridge • Pittsburgh • 1937!

I have not found out what work was being done on the bridge to cause it to be shrouded in tarps. But I presume this image was taken around 2016 because a fire in the tarps caused the bridge to be closed Sep 2, 2016. 30' of the truss was damaged, including a buckled compression member. [cbsnews]
3D Satellite

The tunnels were completed in 1922, but the opening was put off until 1924 after a ventilation solution was added. That solution was not adequate so vertical shafts were added at the midpoints to a ventilation building on top of Mt. Washington. "Carrying 25,000 vehicles in 1932, the Tubes were over their designed capacity. In 2000, the average daily traffic was 63,027." A proposal for an interchange between Saw Mill Run Blvd. and West Liberty Av. was made in 1919. An interchange was finally built in 1999. [phgbridges-tunnel]
3D Satellite
 
Haunted Pittsburgh LLC posted
HAPPY 100th BIRTHDAY, LIBERTY TUNNELS
In January 1924, the public got to ride through the newly built tunnel—the county conducted a series of test runs with actual cars and trucks to try out the ventilation system. At 5,889 feet, it was the longest concrete traffic tunnel in the world designed for automobiles when it opened. There was no Liberty Bridge yet (it opened in 1928)—and the ventilation was a problem, to put it charitably. The experts knew that ventilation was needed, and the county was working to install a system, but they opened the tunnel before they got it right. On May 10, 1924, tragedy struck. A streetcar strike caused cars to swamp the new tunnel. Some 33 people were overcome by the carbon monoxide, 100 others were affected. Soon, a proper ventilation system was installed (the Fan House on Secane Avenue in Mount Washington is massive).
Since then, the tunnel has seen every permutation of the human condition: babies have been born there and people have died there. A highlight: the inbound tunnel was closed on February 15-16, 1990, from 9 p.m. to 6 a.m. for filming of a scene in the Academy Award winning “Silence of the Lambs.” Hannibal Lecter had escaped from his cell (filmed at the Soldiers & Sailors Memorial Hall & Museum in Oakland), culminating in a shocking scene as an ambulance flew through the Liberty Tunnels. The scene runs just a few seconds, but it culminates in a moment that may be the high-water mark of movie horror.
HAPPY BIRTHDAY, LIBERTY TUNNELS
Will Moore: Real Western Pennsylvanians know these are actually called the "Liberty Tubes."
Dan Waters: Will Moore and we know we're going to be in that dam thing an hour.
Loraine Nolder: Or, just "The Tubes".

Straight Outta Pittsburgh posted
Construction in progress on the Liberty Tunnels, 1920.
Van Michael: My father made me drive through the Liberty Tubes on my learners permit (1970)......scared me to death.....made it and it worked, wasn't scared anymore.
I was 16 when Dad hade me drive through the tubes. Squirrel Hill tunnel was a cake walk after the Liberty Tubs.
Jackson-Township historical preservation posted
Cosntruction of the Liberty Tunnels (Tubes) in Pittsburgh in 1920.
Larry Mishkar: Here's information about the contractors, Booth and Finn: https://en.wikipedia.org/wiki/Booth_and_Flinn
 
Ashley Schmidt posted
Liberty Tunnel Construction 1920
The construction of Pittsburgh's Liberty Tunnel was a major engineering feat in the city's history, designed to meet the growing demand for automobile transportation in the early 20th century. One of the first vehicular tunnels in the eastern United States, the tunnel was designed to relieve traffic congestion and provide an efficient passage between South Hill and downtown Pittsburgh.
The Liberty Tunnel's groundbreaking ceremony was held in February 1919, by contractor Booth & Flinn Ltd. The tunnel was designed and supervised by Almos D. Neeld, an engineer who lived in Pittsburgh.
[Several comments indicate that it is called "Liberty Tubes."]

Stuff Thats Gone posted
Courtesy of Brookline connection. Great then and now.  Did you know that when you came through the liberty tubes in 1928 there was no bridge to cross? Approaching the outbound Northern Portal of the Liberty Tunnels, on the ramp from Arlington Avenue, in 1925, just a year after the Twin Tubes opened, as compared with a similar current Google Map image.
In 1925, the Liberty Bridge was in the early stages of development, with work on the bridge piers only just beginning.  Construction had not yet begun on Mount Washington (McArdle) Roadway.
The automobile in the upper photo has turned off of the tunnel approach ramp onto what was then called Mattisee Street, where a few hillside homes were located.  Mattisee was eliminated during the construction of the Mount Washington Roadway, although a some of the homes, near the intersection, remained for a few years.
The Liberty Bridge opened in March 1928, followed by the Mount Washington Roadway shortly afterwards, in July of that same year.
The tunnel/bridge/roadway intersection originally contained a large traffic circle and monument.  The circle was condensed in 1933 and eventually replaced with a traffic signal in the 1940s.


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