The article describes how contractors with experience in Appalachian roadwork are blasting through western Maryland mountains to turn 19 miles of 2- and 3-lane U.S. Route 48 into a limited access freeway. In this project, traffic has to be maintained while blasting and hauling millions of cubic yards of stone and rock from cliffs. Stringent erosion and sediment control to protect trout streams further complicate the project. Riprap ditches and silt fences have helped in this. The project involves constructing two major structures: a dual, 850-ft steel girder bridge over U.S. Route 40, and a 750-ft, triple-cell box culvert to direct a small stream 90 feet below the freeway. Five bridges and four retaining walls will also be constructed.

  • Availability:
  • Corporate Authors:

    McGraw-Hill, Incorporated

    330 West 42nd Street
    New York, NY  United States  10036
  • Publication Date: 1989-7-27

Media Info

  • Pagination: p. 34-35
  • Serial:
    • ENR
    • Volume: 223
    • Issue Number: 4
    • Publisher: McGraw-Hill, Incorporated
    • ISSN: 0891-9526

Subject/Index Terms

Filing Info

  • Accession Number: 00486736
  • Record Type: Publication
  • Files: TRIS, ATRI
  • Created Date: Aug 31 1989 12:00AM