I1. Purpose and Intent
      Purpose
      Intent
      Basis of Design
    I2. Administration
      Formal Communications
      Informal Communications
      Approved Plan
      Inspections
      Acceptance for Operation
    I3. Standard Specifications
      AREA
      ASTM
      State Highway Department Specifications
      Trackwork and Grade Crossing Specifications
      Welded Track, Other Special Track Work, and Track Scales Specifications
      Railroad Bridge and Track Supporting Structure Specifications