Allegheny County Courthouse
|Allegheny County Courthouse|
|Location||436 Grant Street
|Antenna spire||76.2 m (250 ft)|
|Roof||30.48 m (100.0 ft)|
|Design and construction|
|Management||Allegheny County Department of Public Works|
|Architect||Henry Hobson Richardson|
Allegheny County Courthouse and Jail
|Architectural style:||Other, Romanesque|
|Added to NRHP:||March 7, 1973|
|Designated NHL:||May 11, 1976|
|Designated CPHS:||December 26, 1972|
|Designated PHLF:||1968 |
Allegheny County Courthouse is a government building of Allegheny County located in Downtown of the county seat, Pittsburgh, Pennsylvania. The complex is bordered by wide thoroughfares named for city founders James Ross (Ross Street), John Forbes (Forbes Avenue) and James Grant (Grant Street).
Early structures 
Pittsburgh's original courthouse, first occupied in 1794, was a wooden structure located on one side of Market Square. The Pennsylvania Supreme Court and from December 7, 1818, until 1841 the Western District of Pennsylvania also held court sessions at Market Square.
Land for a new courthouse was purchased in April, 1834. This was a tract of land on the corner of Fourth and Grant Streets, on Grant's Hill. Construction took place between 1836 and 1840. This court house was built with polished gray sandstone, quarried at Coal Hill (present-day Mount Washington), opposite Ferry Street along the Monongahela River. The building was designed by John Chislett. The Greek Revival design included a domed cupola housing a rotunda 60 feet (18 m) in diameter and 80 feet (24 m) high. The building was completed in 1841. The buildings second floor again served as the headquarters for both the Commonwealth Supreme Court Pittsburgh region and the Federal Western District, serving the latter until a new U.S. Customs House/Post Office opened on Fifth and Smithfield in 1853.  Due to corrosion caused by coal smoke, the building deteriorated: the dressed surface of the facade dropped off, some of the cornices near the roof began to fall, and the building had a scaly appearance. Even in its deteriorated state, it was a handsome structure. On May 7, 1882, a fire broke out and ruined the building. Subsequently, it was demolished. The third, and present, courthouse was erected on the same spot.
Current structure 
Following the destruction of the 2nd courthouse, Allegheny County Commissioners decided to hold a competition to design a replacement. The winner of the competition was Boston architect Henry Hobson Richardson and construction of the buildings was begun by the Norcross Brothers, Richardson’s construction firm of choice, in 1884.
The design of the main building, which Richardson considered to be his finest, was innovative in that the building is built around an interior courtyard, thus allowing natural light and fresh air to reach most of the building. The courtyard is surrounded by four stories in three sides. A tower rises five stories from the courtyard’s open side. As was usually the case with Richardson’s buildings, the roof is steep with dormers placed at all the corners.
A prison is connected to the courthouse via the "Bridge of Sighs". The design was based on the Bridge of Sighs in Venice. The entire complex was built of large rusticated blocks of granite, with the entrance ways and windows topped with wide arches. This gives the building a heavy, stable and dignified appearance.
In the 1900s the street level in front of the building was lowered as part of a general re-grading of Pittsburgh. Richardson had anticipated this and courses of finished masonry had been buried underground, now to be revealed. Unfortunately this left the ceremonial entrance a full story above the street. A grand stairway was built, but removed during street widening in the 1930s- the low arched doorways were extended downwards to street level, with the result that the visitor is not greeted by the grand entrance hall Richardson planned, but by the low corridors which were once the basement.
In 1974, the building was placed on the National Register of Historic Places.
Legacy and impact 
The design of the Allegheny County Courthouse has influenced buildings in many cities across America, such as Minneapolis City Hall, Altgeld Hall on the campus of the University of Illinois at Urbana-Champaign and James W. McLaughlin's Wayne County Courthouse in Richmond, Indiana.
In 2007, the American Institute of Architects asked Harris Interactive to survey 2,000 people, who were shown 247 photographs of buildings and other structures in different categories chosen by 2,500 architects. The Allegheny County Courthouse was ranked 35th overall on the list and above every other courthouse in the nation except the U.S. Supreme Court.
The former Allegheny County Jail
See also 
- "National Register Information System". National Register of Historic Places. National Park Service. 2010-07-09.
- "Local Historic Designations". Pittsburgh: Pittsburgh History & Landmarks Foundation. Archived from the original on 15 June 2010. Retrieved 2010-07-10.
- Historic Landmark Plaques 1968-2009. Pittsburgh, PA: Pittsburgh History & Landmarks Foundation. 2010. p. 2. Retrieved 2010-07-10.
- "Allegheny County Courthouse and Jail". National Historic Landmark summary listing. National Park Service. Retrieved 2008-07-01.
- Allegheny County Courthouse at Emporis
- Allegheny County Courthouse at SkyscraperPage
- Allegheny County Courthouse at Structurae
- "A century and a half of Pittsburg and her people," Boucher, John Newton; The Lewis Publishing Company, 1908, prgs. 371, 372
Further reading 
- "Pittsburgh, The Story of an American City," 5th edition, Stefan Lorant, Esselmont Books, LLC., Pittsburgh, PA, 1999.
- Kvaran, Einar Einarsson, Pilgrimage to H.H. Richardson, unpublished manuscript
- Ochsner, Jeffrey Karl, H.H. Richardson:Complete Architectural Works, MIT Press, Cambridge, Massachusetts, 1984
- Van Rensselaer, Mariana Griswold, Henry Hobson Richardson and His Works, Dover Publications, NY, 1969, a reprint of the 1888 edition