The new church, dedicated April 28, 1963, has been hailed as a "marble of outstanding design." the Structural Clay Products Institute named the church as an "excellent example of tasteful use of brick" as well as the "use of prestresses concrete panels for the roof." Each is some 23 feet long, nine feet wide, and weighs about eight tons. The altar is hand-hewn of marble, cut from a single three-ton block in Italy and shipped to Pittsburgh. Stained glass is of a facetted type, in an abstract design. The two big windows in the church serve as a memorial to the women of the Altar Society and the men of the Holy Name Society for the many hours they gave and the thousands of dollars they raised so that future generations would have a beautiful church in Cecil.
The Assumption Hall was dedicated in November 1956, and it was used as a temporary church during construction of the new church, which was built on the same site as the original church.
Saint Mary Parish traces its beginning back to the turn of the century. In 1906, Pope Saint Pius X ordered the establishment of the Confraternity of the Christian Doctrine in every parish throughout the world. Two years later, one of the original church committeemen arranged for a religion teacher to come from Pittsburgh to Cecil on Sundays. Saint Mary was the first CCD center in the Diocese, forming the MCCD (Missionary CCD) which reached out to many rural areas of Washington and Allegheny County. This led to a petition from the people in Cecil to form their own parish, which was done in 1909. Saint Mary officially began with the document dated February 12, 1910 in which Bishop Regis Canevin separated the villages of Gladden, Reising, Bishop, and Cecil from the parishes of St. Agatha and St. Barbara in Bridgeville to the new parish of Saint Mary of the Assumption. The corner stone of the first church was laid on Labor Day, September 6, 1909 and was dedicated by Bishop Canevin on May 1, 1910.
SAINT MARY PASTORS
1909-1924 Rev. Paul Baccash
1924-1941 Rev. John Kopera
1941-1948 Rev. Leo Pastorius
1949-1950 Rev. . Desmond McNanamy
1950-1953 Rev. John J. Hannon
1953-1956 Rev. Anthony B. Wehrle
1956-1964 Rev. Peter M. Shirra
1964-1966 Rev. J. Donald O'Neil
1966-1971 Rev. Regis M. Hudock
1971-1986 Rev. John O. Griffith
1986-1998 Msgr. Robert P. Garland
1998-1998 Rev. Paul G. Spisak
1998-2004 Rev. Robert P. Connolly
2004-Present Rev. Stan M. Gregorek