ATT 3 Road Typicals FR 2159.pdf

The document is a technical drawing file containing road infrastructure design details for the Mark Twain National Forest Road Improvement Project. The file includes three detailed technical diagrams: Typical Outlet Ditch Details, Typical Turnout and Turn Widening Details, and a Typical Broad-Based Drainage Dip (Type "B", Saddle Configuration).

The first diagram shows A-A and B-B type outlet ditch specifications, including guidance for road construction at 30-45 degree angles, ditch grading, erosion control, and seeding requirements. The second diagram illustrates turnout and turn widening specifications, detailing turnout widths, transition lengths, and curve widening configurations. The third diagram depicts a broad-based drainage dip with a 25-ft width, providing profile and plan views of the drainage structure, including specifications for aggregate placement and maintaining original ground lines. These technical drawings provide precise engineering specifications for road infrastructure improvements within the forest area.