SR 21, Section 15M, Over South Fork of Ten Mile Creek

This project consists of the preparation of final construction plans for this 63′-6″, single-span, prestressed concrete box beam bridge located in Center Township, Greene County. The replacement structure was constructed upstream from the existing bridge to significantly improve the horizontal geometry of the roadway and eliminate the use of a temporary bridge. The bridge replaced a structurally deficient, 2-span concrete T-beam bridge with a structure that is 5′ wider than the original bridge, and the new roadway alignment considerably improved motorist safety along this section of SR 21.


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Gibson-Thomas Engineering Co., Inc. is a multi-discipline consulting engineering firm established in 1916 in Latrobe, Pennsylvania. Our past experience, key staff and commitment to total client satisfaction are the major factors that our clients consider when contracting with Gibson-Thomas Engineering.

724-539-8562
Corporate Office
  • Corporate Office
    • 1004 Ligonier Street
      Latrobe, PA 15650
    • P: 724-539-8562
Pennsylvania Offices
  • Clarion Area Regional Office
    • East Brady, PA
    • P: 724-526-2190
  • Harrisburg Area Regional Office
    • Camp Hill, PA
    • P: 717-612-9880
  • Indiana Area Regional Office
    • Indiana, PA
    • P: 724-471-2246
  • Pittsburgh Area Regional Office
    • Wexford, PA
    • P: 724-935-8188
Florida Office
  • Fort Myers Area Regional Office
    • Ft. Myers, FL
    • P: 239-776-2908
Virginia Office
  • Virginia Office
    • Richmond, VA
    • P: 804-672-4221