Page 16 - Bridge and Highway Structure Rehabilitation and Repair

PREFACE xv

continuous span curved bridges currently under design at Washington Dulles Airport, the elevated
Monfayette Expressway Project in Western Pennsylvania with high piers, prestressed concrete
box bridges for Jeddah-Mecca Expressway, numerous rehabilitations of highway transit bridges
in New York City, Boston, and Philadelphia and the recently completed integral abutment bridge
on Route 46 over Peckman River in New Jersey.
In addition, the book will address
1. Recent advancements in analytical and design techniques, such as the application of load
and resistance factor design (LRFD) methods and the need and availability of specialized
software.
2. Changes in AASHTO design codes for bridges and highways and in the design manuals and
guidelines of each state.
3. Revisions to design criteria based on recognition of earthquake vulnerability and bridge
foundation scour from fl oods.

4. Increase in the volume of vehicular traffic on highways results from enhancement in auto-
mobile industry production and with their marketing motto “one car for each family”. This
has resulted in an overload of existing bridges and highways, increased wear and tear and
in the number of accidents. The highway network should be able to accommodate increases
in ADT and ADTT. Frequent traffic counts may be necessary for adjusting direction of fl ow

in the network.
5. Modern materials technology, the developments in new types of concrete, steel and other
construction and repair materials.
6. Developments in construction methodology, the use of long span cranes, hauling of long
span girders and improvements in erection on sites.
7. Changes in the architecture of bridges, need for planning of wider highway lanes for use by
wider and heavier trucks and the enhancement of roadside facilities for long distance travel
by cars, and distribution of goods in every nook and corner of the country.
8. Updates on important developments in bridge and highway maintenance and use of manage-
ment techniques of bridges and highways based on science and technology.

Professional engineers will learn to create a more efficient design process and construc-

tion managers will learn how to save time and money with a better bridge management system.
The book incorporates the essence of latest developments by making use of the experience and
expertise acquired in implementing major bridge projects.
Recent innovations in telecommunications, automobile, aircraft, and telephone industries

seem to have influenced the overall format of engineering disciplines. It is important for any
book to generate sufficient interest in the subject matter being utilized by university students. A

realistic approach is likely to help the students so that they are mentally prepared for the design
tasks ahead, rather than being focused only on the design formulae.

A fresh approach to the topics is reflected in the contents. The book will be used by the
student, the teacher, and the engineer as guidelines, resulting in time saved and the dangers of
misconceptions avoided. Both academic and professional classes would find the contents as

appropriate and relevant.
The book may be used both as a text book or a desk reference.
There is a wealth of information available in research publications, in the proceedings of
international conferences, technical journals, and periodicals, where there are papers by learned
authors and speakers from all over the world. Notable among the conferences are SEI Proceedings,
New York City Bridge Conference, Pittsburgh Bridge Conference, and specialty conferences and
seminars. Journals, which provide latest articles on the related issues including vendor products
from the world of construction, are Civil Engineering, New Civil Engineer, Roads & Bridges,