Improvements in highway design methods and practices are reflected in this Third Edition of the handbook.
The chapter on environmental issues has been updated throughout in view of ever-evolving regulations in that
area. The chapter on highway design includes information from the latest AASHTO “Green Book.” The trend
to replace bridges with spans up to about 60 ft (18 m) with stiffened special long-span corrugated steel and
precast concrete drainage structures is documented in the chapter on culverts. The chapter on safety systems
shows the trend to use median barriers over wider median widths than in the past. Metric units have been
added throughout the text and in tables and figures wherever feasible.

The Highway Engineering Handbook has been developed by knowledgeable engineers to serve as a
comprehensive reference source for those involved in highway design. This handbook is broad in scope,
presenting information on topics ranging from environmental issues to value engineering, from the design of
culverts, lighting, and noise walls to the design of safety systems, retaining walls, and bridges. In addition,
such fundamental subjects as location and pavement design are fully discussed.
This volume should be useful to a wide range of personnel involved in highway design and construction,
including consulting engineers; engineers employed by departments of transportation in federal, state, and
local governments; those involved with turnpike authorities; and engineering educators. Both experienced
practitioners and serious students will find the information presented here useful and easy to apply. It should
enable the engineer to create a design that fulfills the requirements of the highway user: a safe, smooth,
durable, aesthetically pleasing, environmentally sensitive, and economical highway system.


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