U.S. DOT - U.S. Railroad Revitalization and Regulatory Reform (4R) Act of 1976 Archives

"Preliminary Standards, Classification, and Designation of Lines of Class I Railroads in the United States Additions and Corrections: A Report by the Secretary of Transportation" V.I 8-3-1976 Courtesy David Mangold Collection (pending digitization)

"Preliminary Standards, Classification, and Designation of Lines of Class I Railroads in the United States Additions and Corrections: A Report by the Secretary of Transportation" 8-3-1976 Courtesy David Mangold Collection (pending digitization)

"Final Standards, Classification, and Designation of Lines of Class I Railroads in the United States: A Report by the Secretary of Transportation" V.I 1-19-1977 Courtesy David Mangold Collection (pending digitization)

"Final Standards, Classification, and Designation of Lines of Class I Railroads in the United States: A Report by the Secretary of Transportation" V.II (Interim) 1-19-1977 Courtesy David Mangold Collection (pending digitization)

"Final Standards, Classification, and Designation of Lines of Class I Railroads in the United States: A Report by the Secretary of Transportation" V.II 6-30-1977 (USDOT 4R Final Report Vol II 6-30-1977.pdf) 54.624MB Courtesy David Mangold Collection

Final Mainline and Branchline Designations for Class I Railroads

Structure Chart 6-1977 (4R Final Consolidation Chart 6-1977.pdf) 1.48MB Courtesy David Mangold Collection
National Network Map 6-1977 (4R Final Consolidation Map 6-1977.pdf) 2.053MB Courtesy David Mangold Collection

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This page updated 6-23-2012