U.S. Route 30 in Pennsylvania
In the U. S. state of Pennsylvania, U. S. Route 30 runs east–west across the southern part of the state, passing through Pittsburgh and Philadelphia on its way from the West Virginia state line east to the Benjamin Franklin Bridge over the Delaware River into New Jersey. In Pennsylvania, US 30 runs along or near the transcontinental Lincoln Highway, which ran from San Francisco, California to New York City before the U. S. Routes were designated. Popular places along the route include the Gettysburg Battlefield, Dutch Wonderland, the Flight 93 National Memorial, Fort Ligonier, Westmoreland Mall, Jennerstown Speedway and Soak Zone, Independence Mall of Independence National Historical Park. US 30 presently crosses from West Virginia into Pennsylvania near West Virginia, it is a surface road from West Virginia to the U. S. Route 22 junction southeast of Imperial. There it joins the US 22 freeway, US 22/30 joins the Penn-Lincoln Parkway West into downtown Pittsburgh. US 30 passes through Pittsburgh on the Penn-Lincoln Parkway, crossing the Monongahela River on the Fort Pitt Bridge.
This freeway was built from 1953 to 1962 as a bypass for both the Lincoln Highway and the William Penn Highway. Besides US 30, it carries US 22 and Interstate 376. At a point beyond the Squirrel Hill Tunnel, at the southern end of PA Route 8, US 30 leaves the Parkway. Much of this section of U. S. 30 has been supplanted by the Pennsylvania Turnpike. From the Pittsburgh area, US 30 heads east through Greensburg, where it intersects U. S. Route 119, it heads into Somerset County, where it meets U. S. Route 219 east of Jennerstown. On September 11, 2001, United Airlines Flight 93 crashed in an empty field two miles south of U. S. 30, in Stonycreek Township in Somerset County. The heroism of the passengers and crew thwarted the hijackers' plan to crash into either the US Capitol Building or the White House in Washington D. C.. The entrance to the permanent Flight 93 National Memorial is along U. S. 30. The route continues east into Bedford County, where it heads toward Bedford, the site of the route's intersection with U.
S. Route 220 a short distance south of the southern beginning of Interstate 99 at the Pennsylvania Turnpike interchange. Past Bedford, the route is four-laned and follows the Pennsylvania Turnpike, passing through Everett, it passes through the town of Breezewood, where Interstate 70 traffic must still use a short non-interstate section of U. S. 30 to go between the I-70 going to Maryland. The route narrows back to two lanes climbs through the Allegheny Mountains as it passes through Fulton County, intersecting U. S. Route 522 in McConnellsburg, it enters the scenic Cumberland Valley in Franklin County, where it passes through Chambersburg, crossing U. S. Route 11 and Interstate 81; the highway crosses the South Mountain range through the Cashtown Gap and enters Adams County. West of Gettysburg, U. S. 30 follows much of the path of the old Chambersburg Turnpike, a route used by much of Robert E. Lee's Army of Northern Virginia during the Gettysburg Campaign; the route serves as the main east–west artery through Gettysburg, traversing the northwestern portion of the Gettysburg Battlefield and intersecting U.
S. Route 15. Past Gettysburg, Route 30 travels through New Oxford before entering York County. Just west of York, Route 30 branches off Lincoln Highway to bypass the downtown parts of the cities of York and Lancaster. Several modifications to improve flow have been made in York but the route is still congested due to a series of traffic signals, it becomes freeway again, crosses the Susquehanna River on the Wright's Ferry Bridge into Lancaster County. Along the north side of Lancaster, US 30 intersects the eastern terminus of Pennsylvania Route 283, which heads to Harrisburg, shares a brief concurrency with U. S. Route 222. From 1997 to 2004 significant work was completed to the bypass around Lancaster. Just east of Lancaster, the freeway ends at the eastern end of PA 462. S. 30 continues on its way toward Philadelphia. U. S. 30 follows the route of the Philadelphia and Lancaster Turnpike, the first long-distance, paved road built in the United States, between Lancaster and Philadelphia. Between the east end of the bypass around York and Lancaster and the west end of the Coatesville Bypass in Chester County, there is a large freeway gap between these two segments, congested.
PennDOT is under study to improve this last remaining section. This section passes through Pennsylvania Dutch Country and is lined with many Amish tourist attractions. Between Sadsbury Township and East Whiteland Township, US 30 follows the limited-access Coatesville Bypass with U. S. Route 30 Business running along the former alignment through Coatesville and Exton. Along the bypass, US 30 intersects U. S. Route 322 near Downingtown. At the east end of the bypass, it intersects U. S. Route heads east on Lancaster Avenue; the Exton Bypass portion of US 30 is designated the Exton Bypass Scenic Byway, a Pennsylvania Scenic Byway. It heads through the Main Line s
Pennsylvania Route 51
Pennsylvania Route 51 is a major state highway in Western Pennsylvania. It runs for 89 miles from Uniontown to the Ohio state line near Darlington, where it connects with Ohio State Route 14. Route 51 is the termination point for Pennsylvania Route 43, Pennsylvania Route 48 and Pennsylvania Route 88. Century III Mall is located on this road in West Mifflin; the Route is the rest of Fayette County to Pittsburgh. The highway is four-lane highway south of Pittsburgh as it passes through Pittsburgh's South Hills, but narrows to a two-lane road through several boroughs along the Ohio River, it becomes four lanes again after passing Chippewa Township, Beaver County, Pennsylvania in Beaver County and continues to the Ohio border. In the South Hills, Route 51, along with US 19, is one of the major routes in and out of Pittsburgh, as it provides access to several bridges and tunnels. Route 51 is one of the highways that enters an intersection in the West End. PA 51 begins as Pittsburgh Street in downtown Uniontown at an intersection with U.
S. Route 40 Business; as Route 51 heads north, it exits Uniontown and intersects with U. S. Route 119, Uniontown's bypass. North of US 119, PA 51 is a rural, multi-lane divided highway, known as Pittsburgh Road. In North Union Township, Route 51 divides for 0.7 miles. It shifts towards the northwest, continuing as a multi-lane divided highway. In Perry Township, PA 51 intersects Pennsylvania Route 201 at a cloverleaf interchange. North of PA 201, it enters the borough of Perryopolis as Fuller Drive. Upon entering Westmoreland County, PA 51 intersects the southern terminus of Pennsylvania Route 981. About 2,000 feet northwest of PA 981, it intersects Interstate 70 at exits 46 A-B to form a full cloverleaf interchange. To the northwest in Sweeneys Crossroads, the road intersects Pennsylvania Route 201 again. PA 51 divides before reaching the county border and passes by Rostraver Airport. Route 51 only spends seven miles in Westmoreland County, all in Rostraver Township. Upon entering Allegheny County, PA 51 is called Hayden Boulevard, it meets with Pennsylvania Route 136 at a diamond interchange.
Route 51 intersects the southern terminus of Pennsylvania Route 48 in Forward Township before entering the boroughs of Elizabeth and West Elizabeth. In West Elizabeth, after crossing the Monongahela River via the Regis R. Malady Bridge, PA 51 intersects with Pennsylvania Route 837, it continues towards Jefferson Hills in the northwest, where it meets the northern terminus of Pennsylvania Route 43 at exit 54. PA 43 is expected to extend further north of PA 51. Northwest of PA 43, PA 51 becomes Clairton Boulevard. In Pleasant Hills and West Mifflin, PA 51 passes by the Century III Mall, one of the largest in the area; the stretch of PA 51/Clairton Blvd. Continues through Baldwin Borough and Brentwood. At the border of Brentwood and Overbrook, PA 51 becomes Saw Mill Run Boulevard. At the southern tip of Pittsburgh, PA 51 intersects the northern terminus of Pennsylvania Route 88 before continuing towards the north as Saw Mill Run Blvd, it meets with the Liberty Tunnel connector, which leads towards the Liberty Bridge and Interstate 579.
S. Route 19 Truck at this junction; the US 19 Truck/PA 51 concurrency ends when US 19 TRK joins Interstate 376, U. S. Route 22, U. S. Route 30 at exit 5. At this point, PA 51 begins a brief concurrency with U. S. Route 19 through a short expressway in Pittsburgh's West End section; the concurrency ends as US 19 crosses the Ohio River on the West End Bridge while PA 51 turns left, heading toward McKees Rocks to the northwest as West Carson Street, paralleling the Ohio River. Entering McKees Rocks, it makes a 90 degree turn to become Locust Street makes another turn to become Charties Avenue, makes a final turn towards the northwest to become Island Avenue. In Stowe Township, PA 51 becomes Robinson Boulevard and passes south of Neville Island on the Ohio River. After a couple of S-curves, Route 51 becomes Coraopolis Road and intersects Interstate 79 at exit 64, it becomes State Avenue in Coraopolis before dividing into two one-way streets called 4th and 5th Avenues. North of Coraopolis, PA 51 continues to parallel the Ohio River as University Boulevard in Moon Township.
It becomes Stoops Ferry Road and passes through Crescent Township on McGovern Boulevard before entering Beaver County. The route spends 36 miles in Allegheny County. At the Beaver County line, PA 51 intersects the eastern terminus of Pennsylvania Route 151. North of PA 151, Route 51 enters South Heights as Jordan Street; the route extends past the Ambridge-Aliquippa bridge, through the city of Aliquippa and West Aliquippa. Farther to the north, the highway heads towards the north as Constitution Boulevard entering Monaca as Beaver and Pennsylvania Avenues before making a 90-degree turn towards the north. Route 51 crosses the Ohio River on the Monaca-East Rochester Bridge, entering the borough of East Rochester, it makes a 90-degree turn to the west to begin a concurrency with Pennsylvania Route 65. In Rochester, PA 51/PA 65 meet with Pennsylvania Route 18. PA 51/PA 68 cross the Beaver River on the Beaver Bridge. In Bridgewater, the PA 51/PA 68 concurrency ends when Route 51 makes a 45-degree turn towards the northwest and continues towards the northwest as Constitution Boulevard.
In Chippewa Township, it inters
Dormont is a borough in Allegheny County, United States and is part of the Pittsburgh Metro Area. The population was 8,593 at the 2010 census. Dormont is a home to a diverse population including young professionals, working families, retirees. Dormont's economic stability can be attributed to this diversity along with its close proximity to jobs in Downtown Pittsburgh, access to The "T", diverse housing stock, low crime rates. Dormont is mixed use and urban and features a pedestrian friendly business district, with bars, coffee shops and retail stores, it is famous for one of the largest municipal pools in the historic Dormont Pool. Loosely translated, Dormont means "Mountain of Gold" in French; the territory in which Dormont Borough is situated was held by the Delaware and Shawnee tribes until 1768 when the territory was part of the transaction in which Fort Stanwix was purchased from the Six Nations. In following years, Dormont’s area was part of Cumberland County, Pitt Township in Bedford County, Penn Township in Washington County, St. Clair Township in Allegheny County in 1788.
Dormont was fashioned from parts of Scott and Union Townships. An order of incorporation was signed on March 31, 1909, making Dormont the first independent municipality in the South Hills of Allegheny County. Municipal officials wanted to name the new community "Mt. Lebanon," however objections were raised by their as yet unincorporated neighbors to the south who adopted the name. Instead the name Dormont was chosen from the Americanized version of the French term "mont d'or", loosely translated as "Mountain of Gold."The first election of Borough officials was held on April 27, 1909. Dormont annexed part of Scott Township in 1909, two additional parts of Union Township in 1913 and 1916, a portion of Mt. Lebanon Township in January 1921, giving it a total area of just less than one square mile. With the construction of the streetcar tunnel and the Liberty Tunnels came rapid growth. Once the borough of Dormont was incorporated in 1909, at least 30 different streets were given new names. Today, all but two of Dormont's "side streets" are designated as avenues, the exceptions being Memorial Drive and Park Blvd.
Two of Dormont's mainline streets, Scott Road and McFarland Road, are two-lane "borough line" streets in which one lane is located in Dormont and the other in Mt. Lebanon; the northern stretch of another "borough line" street, McNeilly Avenue, runs through Dormont on one side and the Pittsburgh neighborhood of Brookline on the other. Before the incorporation and street name changes, Dormont had three designated "streets": Beech St. Sycamore St. and Sylvester St.. Through the years, the convenience of the borough, plus the amenities offered its residents, has kept it densely populated, its citizens enjoy one of the largest swimming pools in Pennsylvania, two parks and tennis courts, two Little League fields, a fine library, an impressive volunteer-built children's playground, as well as seasonal activities for both children and adults. "Dormont Day," the annual Fourth of July park-wide event, is the highlight of the summer season and features all day family entertainment beginning with the 8:00 a.m.
Twenty-One Gun Salute and culminating with one of the most spectacular fireworks displays for a community of this size. During the day, park goers are treated to live music, food booths, pony rides, Little League All-Star games. Since 1965, Dormont's school system, Keystone Oaks School District, is a jointure with the boroughs of Castle Shannon and Green Tree; the borough itself includes Dormont Elementary School, Keystone Oaks Middle School and Keystone Oaks High School. Oddly enough, none of the three communities which make up the Keystone Oaks School District are contiguous; the Keystone Oaks Middle and High Schools are located just outside the Dormont borough line in neighboring Mt. Lebanon. Dormont Elementary School is located on the site of the old Dormont High School on Annapolis Ave; when the Keystone Oaks High School building was completed in 1969, the old high school was changed to Jay Neff Middle School, named after the superintendent of Dormont schools. In 1996, the old middle school was demolished and Keystone Oaks High School expanded to include Keystone Oaks Middle School.
A brand new building for the grade school was built, bringing together students from the two previous grade schools and Hillsdale. The Kelton School building, located on a hillside adjacent to Keystone Oaks, no longer exists. Hillsdale School is now the Dormont Municipal Building. Dormont is home to the South Hills Beauty Academy and the Pittsburgh Bartending School. Dormont is located in Southwestern Pennsylvania, in Allegheny County 4 miles south of the county seat Pittsburgh. Dormont's map coordinates are: 40°23′37″N 80°2′15″W. According to the United States Census Bureau, the borough has a total area of 0.7 square miles, all of it land. Dormont has four borders, including the Pittsburgh neighborhoods of Banksville to the north, Beechview to the northeast and Brookline to the east; the remainder of Dormont is bordered by Mt. Lebanon to the west; as of the census of 2000, there were 9,305 people, 4,089 households, 2,314 families residing in the borough. The population density was 12,563.3 people per square mile.
There were 4,287 housing units at an average density of 5,788.2 per square mile. The racial makeup of
Fort Pitt Bridge
The Fort Pitt Bridge is a steel, double-decked bowstring arch bridge that spans the Monongahela River near its confluence with the Allegheny River in Pittsburgh, Pennsylvania. It carries Interstate 376 between Downtown Pittsburgh, it was the world's first computer designed bowstring arch bridge:00:02:43 and double-decked bowstring arch bridge. The bridge is known for its difficult lane changes on the lower level requiring people to go from the extreme left lane across two lanes to the extreme right lane in only 300 feet; the upper level is more forgiving for some routes, but still requires a full span lane change in 300 feet to get from the south side entrance to the downtown exits. The $6.305 million Fort Pitt Bridge, designed by George S. Richardson of Richardson, Gordon, & Associates, opened at 11 a.m. on June 19, 1959 with a ribbon-cutting ceremony by Gov. David L. Lawrence before a caravan, including Mayor Thomas Gallagher and mayoral candidate Joseph M. Barr, was driven across while a city fireboat gave a hose salute upriver.
Its two predecessor bridges, the original Point Bridge and its replacement of the same name, spanned closer to the aforementioned confluence from West Carson Street to Water St. near the tip of Point State Park. The Point Bridge closed two days after the opening of the Fort Pitt Bridge, but remained standing until it was dismantled in 1970; until the opening of the Fort Pitt Tunnels on September 1, 1960, outbound traffic was routed onto West Carson St. heading towards the West End. At the time of opening, the bridge contained 8,066 tons of steel, 4,950 tons of structural carbon steel and 1,305 tons of steel reinforcing rods; the contractors included U. S. Steel's American Bridge Co. John F. Casey Co. Dinardo Inc. Fort Pitt Bridge Co. and J. C. Jackanic Inc; the Fort Pitt Bridge is part of a sequence from The Song Remains the Same, a documentary of Led Zeppelin's 1973 tour. Many other Pittsburgh landmarks are shown, including the Liberty Bridge and its tunnels, it features prominently in the 2012 film The Perks of Being a WallflowerThe bridge appears in the 1993 film Striking Distance and the 2011 film Abduction.
The early promotional images for The Last of Us used this bridge as a recognizable landmark to show that the game would be set in and around Pittsburgh. List of crossings of the Monongahela River Bridges of Pittsburgh Fort Pitt Tunnel Fort Pitt Bridge at PGH Bridges.com Fort Pitt Bridge at Structurae
Fort Pitt Tunnel
The Fort Pitt Tunnel carries traffic on Interstate 376, U. S. Route 22, US 30, US 19 Truck between Downtown Pittsburgh and the West End neighborhood in the U. S. state of Pennsylvania. Traveling beneath Mount Washington, the structure is divided into a two lane inbound tunnel and two lane outbound tunnel; the inbound tunnel flows onto the top deck of the double-deck Fort Pitt Bridge, opposite traffic from the lower deck using the outbound tunnel. To accommodate the bridge, the northeast portals of the parallel tunnels open at two levels. "FORT PITT TUNNEL" is mounted in brushed steel letters on a grey granite facade above the southwest portals, with larger scaled capital letters used on the facade above the northeast portals. Before entering the southwest end of the inbound tunnel, travelers see a commonplace view of Southwestern Pennsylvania's hills, but at the northeast end, travelers emerge to a panorama of Pittsburgh's Golden Triangle and surrounding skyline, the view cited by The New York Times as "the best way to enter an American city".
The vantage was the inspiration for the news opening on Pittsburgh's KDKA-TV for several years in the 1980s and 1990s, is referenced in Stephen Chbosky's novel The Perks of Being a Wallflower. The Fort Pitt Tunnel opened in 1960, a year after the adjoining Fort Pitt Bridge, it is the third longest automobile tunnel in the City of Pittsburgh, following the Liberty Tunnels and the Squirrel Hill Tunnel. And it is one of four major tunnels passing beneath Mount Washington, including the Liberty Tunnels and the Wabash Tunnel for automobiles, the Mount Washington Transit Tunnel for public transportation. Before the existence of the Fort Pitt Tunnels, South Hills commuters travelled around the Banksville Circle, the northern terminus of Banksville Road and western terminus of Saw Mill Run Blvd at the time. On July 11, 1954, contracts were awarded for the basic design of the Fort Pitt Tunnels; the groundbreaking ceremony for the Fort Pitt tunnel was held April 17, 1957 and drilling began August 28 of the same year.
In April 1960 construction on the tunnels was complete and they opened for the first time at 11 a.m. on September 1, 1960, with a dedication ceremony on the southwestern portal by Governor Lawrence, Pennsylvania Transportation Secretary Park H. Martin and Pittsburgh Mayor Joseph M. Barr followed by a "christening" of the tunnels in which the Governor led a caravan of antique cars through; the tunnel cost $17 million. On Thursday, May 31, 2007, a bomb threat shut down the Fort Pitt Tunnel along with the Liberty and Squirrel Hill tunnels, causing a major traffic jam; the tunnel provided AM reception in 1960, but due to design repairs it was discontinued until 1986. It was improved to cover the entire tunnel with strong reception in March 1997. Since August 1987, the tunnels have provided cellular phone reception. With the help of Carnegie Mellon University graduate students, the tunnel has provided FM reception since July 2005 as well as having its AM signals upgraded at that time. In 2015, the original flat ceiling was removed due to its poor condition.
3,614 ft in length 28 ft wide 13.5 ft vertical clearance Serves nearly 107,000 vehicles per day. There are 1,788 light fixtures with 3,576 bulbs. There are 187,200 sq ft of tiled surface to wash. Pittsburgh portal Travel Channel video Video of the tunnel 40.43191°N 80.02440°W / 40.43191.
U.S. Route 22 in Pennsylvania
U. S. Route 22 is an east–west route stretching from Cincinnati, Ohio in the west to Newark, New Jersey in the east. In Pennsylvania, the route runs for 337.60 miles between the West Virginia state line at Washington County, where it is a limited-access expressway-grade route through the western suburbs of Pittsburgh, to the New Jersey state line at Easton. US 22 carries multiple names as it progresses across the state, including the William Penn Highway and the Lehigh Valley Thruway. Several sections of the road are freeway, including the Lehigh Valley Thruway. US Route 22 crosses into Pennsylvania from West Virginia as the William Penn Highway, it becomes concurrent with U. S. Route 30 and west of Pittsburgh with I-376, as the Penn Lincoln Parkway, it continues as such through Pittsburgh and beyond the end of the US 30 concurrency, when I-376 reaches its eastern end at the Pennsylvania Turnpike junction with Interstate 76, US 22 resumes as the William Penn Highway again as it begins the long climb eastwards up the Allegheny Plateau towards the gaps of the Allegheny Front, where it crosses the eastern continental divide in Tunnelhill, Pennsylvania where it descends along the same valley once used by the historic Allegheny Portage Railroad.
During the last part of its eastbound ascent, it becomes known as the Admiral Peary Highway from Armagh, Pennsylvania in Indiana County through the Blair Gap and down into the Altoona area. From Duncansville to Mount Union, US 22 is a two-lane road with occasional passing and truck-climbing lanes, it passes through the business district of Huntingdon, where it is three lanes, it remains a two-lane road. The US 522 concurrency continues until Lewistown. US 22 bypasses the downtown area of Lewistown as a four-lane limited access highway and becomes concurrent with US 322, continuing as a four-lane limited access highway along the Juniata and Susquehanna rivers until Harrisburg. In Harrisburg, it continues as N Cameron Street, Arsenal Blvd. Herr St. Walnut St. Jonestown Rd. and Allentown Blvd. In Fredericksburg, US 22 becomes concurrent with I-78 for a 40-mile stretch before splitting off on to the Lehigh Valley Thruway; the Lehigh Valley Thruway is a 24-mile-long freeway portion of US 22 from the eastern end of the Interstate 78/US 22 concurrency in Kuhnsville, west of Allentown, to the state line in Easton.
The highway travels just to the north of Allentown and Bethlehem and passes through Easton. I-78 would have continued with the U. S. 22 concurrency on the Lehigh Valley Thruway into New Jersey, with I-278 running south as a bypass, I-178 and I-378 serving Allentown and Bethlehem respectively. Due to opposition in Phillipsburg, New Jersey on the building of a I-78/U. S. 22 highway through the town, PennDOT and NJDOT decided to reroute the I-78 highway onto the proposed I-278 bypass and allow U. S. 22 to remain on the limited-access highway, after going through a series of sharp dangerous curves in Easton and crossing the Delaware River into NJ, becomes an at-grade divided highway in Phillipsburg. Traffic on the Lehigh Valley Thruway is heavy at rush hour near the PA 145 interchange; the series of sharp curves is locally known as "Cemetery Curve", because of it, the speed limit is lowered to 45 mph at Route 248 and lowered to 35 mph around the sharpest part of the curves. At the interchange with Bushkill Street, US 22 becomes an elevated highway until crossing into New Jersey.
The speed limit drops once again to 25 mph while crossing the Easton-Phillipsburg Toll Bridge. The William Penn Highway was organized as an alternative to the Lincoln Highway being parallel to the Pennsylvania Railroad west of Harrisburg; the route's New York Extension was adopted in 1916. The Pennsylvania Department of Highways assigned the Pennsylvania Route 3 designation to this road in 1924, in 1926 it became part of U. S. Route 22 when the United States Highway System was formed, The road became problematic for motorists in Lebanon along the current U. S. Route 422. S. Routes 22 and 222; the highway continued through Allentown on Hanover Avenue and through Bethlehem on Broad Street, Linden Street, Easton Avenue. Pennsylvania Route 43 was aligned as a bypass, north of the Pennsylvania Dutch Country, that ran from U. S. Route 22, U. S. Route 11, Pennsylvania Route 5 in Harrisburg to Pennsylvania Route 12 in Bethlehem; the route from Fogelsville to Allentown, now Main Street, Tilghman Street, College Heights Boulevard, Liberty Street, was designated LR 443 in 1925, was soon incorporated into "Traffic Route 43."
The New York Times was recommending use of this cutoff by early 1931. On June 8, 1931, the American Association of State Highway Officials came to a resolution for the traffic problem, by replacing the PA 43 corridor with US 22; the Pennsylvania Department of Highways moved the William Penn Highway name to match. The state truncated PA 43 to Susquehanna Street from Allentown to Bethlehem. Signs were changed to reflect the new designations on May 31, 1932, with the new route designations in place on June 1, 1932. Tilghman Street was connected directly from Cetronia to Allentown by a bridge over Cedar Creek. By 1936, US 22 had been moved from its Hamilton Street and Broad Street alignment to Tilghman Street and Union Boulevard through Allentown and Bethlehem; when the Lehigh V
The Liberty Tunnels are a pair of tunnels located in Pittsburgh, Pennsylvania that allow motorists to travel between the South Hills of Pittsburgh and the city, beneath Mt. Washington; the tunnels were vital in the expansion of the South Hills suburbs by providing a direct route to the city, eliminating the time-consuming task of navigating around or over Mt. Washington and its inclines. Opening in 1924, the Liberty Tunnels are the longest automobile tunnel in the City of Pittsburgh; the tunnels were designed by Amos D. Neeld, who would supervise the construction of the adjoining Liberty Bridge, which gives travelers a way to cross the Monongahela River after passing through the tunnels; the design was two vertical wall horseshoe profile tunnels, each consisting of two lanes of traffic and a 4 ft sidewalk. The sidewalks, being minimally used and in disrepair, were removed during a renovation in the 1970s in order to widen and increase the height of the traffic lanes. Prior to the construction of the Liberty Tunnels, many other projects were proposed.
One plan, from engineer W. M. Donley, called for a deep cut through the mountain; this would eliminate the need for a tunnel. Many residents wanted tunnels to be built in Shalerville. In 1959, the Fort Pitt Tunnels were constructed near this proposed area. Other residents wanted tunnels to be built in a valley behind Mt. Washington that led to Dormont and Mt. Lebanon, they would follow a low line to exit at Saw Mill Run. This was known as the Bell Tavern plan, modified to create the Liberty Tunnels; the final plan for the tunnels shared the southern Bell Tavern portal, but followed a higher line to emerge on the north face of Mt. Washington; this plan required the construction of a new bridge, to become the Liberty Bridge. Booth and Flinn, Ltd. were awarded the contract to build the new tunnels in January 1919, construction began shortly thereafter. On May 11, 1922, the boring of the tunnels was complete and in January 1924, the $6 million Liberty Tunnels were opened to traffic. However, the tunnels were not yet complete and lacked a major component necessary to the project: ventilation.
There was not yet a ventilation system when the tunnels opened, but authorities decided the flow of traffic would allow for a natural draft of ventilation. On May 10, 1924, a traffic jam which occurred due to a Pittsburgh Street Railway Company strike, causing vehicles to be stopped, idling in the tunnels. Several motorists passed out from the fumes emitted from the exhaust of the congested vehicles. For the safety of motorists, the number of vehicles permitted through the tunnels was regulated until a ventilation system was installed. With help from the U. S. Bureau of Mines, tunnel engineers designed a system to ventilate the tunnels to accommodate the high traffic flow. In 1928, construction of four 200-foot vertical shafts was completed to continuously provide fresh air to the tunnels. A plant located on top on the mountain was constructed to pump the fresh air through the shafts, which tower 110 ft above the plant. After the ventilation system was put into service, the traffic restrictions were lifted.
Following the completion of the Liberty Tunnels, the Liberty Bridge was completed and linked to the tunnels on March 27, 1928. The bridge and tunnel combination gave motorists and pedestrians a direct route to the city without traveling over or around Mt. Washington. 5,889 ft in length Twin tunnels 2 lanes in each tunnel Vertical wall horseshoe profile 11 cross passages 14 ft 6 in posted vertical clearance Each tunnel is 28.6 ft wide and 20.75 ft high to arch Floor slopes upward 0.329 percent grade to Saw Mill Run portal 20 ft higher Opened in 1924 Between: Liberty Bridge. Since August 1987 the tunnels have provided cellular phone reception. Liberty Tunnels on pghbridges.com