Data Exchange Standards

The following information supplements PDDM Section 9.6.6.4

Data Exchange Standards

There are numerous software products used in construction. These may have proprietary design formats not...

Level of Detail

The following information supplements PDDM Section 9.6.1.

Digital Design Data

Develop highway design surveys and road designs using Bentley GEOPAK and/or(?) Open Roads software. Provide design data in native MicroStation file formats...

Earthwork Design

The following information supplements PDDM Section 9.5.1.

While roadway excavation is not classified for measurement or payment purposes, it may be categorized for computation of earthwork design and mass purposes as the following types:

1. ...

Design Procedures Guide

The Design Procedures Guide provides basic guidance, recommended procedures, and instructions for developing and documenting the highway design. This includes fundamental steps for developing the geometric design and preparation of plans, specifications and estimates (PS&E...

PDDM Archives

The PDDM was first published in 1988 in English units. It was re-released in 1996 as a Metric document. Beginning in 2005 the document was published with dual units. The following archived versions of the PDDM are available for reference purposes ONLY within Federal Lands Highway offices (see...

Technical Guidance Manuals

The FLH Technical Guidance Manuals supplement the information provided in the PDDM. The following manuals are provided:

• Geotechnical Technical Guidance Manual, guidance related to...

About the Controlling Criteria

The following information supplements PDDM Section 9.1.3:

The following chart summarizes the ten FHWA controlling criteria with typical sources for the specific values. Actual values depend on...

Highway Design Forms

The following forms apply to all FLH Division offices:

• Highway Design Standards - for documenting FHWA controlling criteria decisions and...

Highway Design Standards

Rev: 31-Mar-2021

This form applies to all FLH Divisions.  See more information about design exceptions and filling out this form.

Note:  This form is not viewable within a web browser.  Download the document for viewing and use.

Beartooth Hwy - 3D Modeling

The Beartooth Highway Road Improvement: Design Visualization Interactive CD-ROM is a good example of an effective interactive CD-ROM that utilizes logical information and interface design to weave a variety of different media into a coherent whole. Macromedia Director was used to author this...