Highway Bridge Superstructure Engineering : LRFD Approaches to Design and Analysis book cover
1st Edition

Highway Bridge Superstructure Engineering
LRFD Approaches to Design and Analysis

ISBN 9781466552180
Published November 21, 2014 by CRC Press
963 Pages 276 B/W Illustrations

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Book Description

A How-To Guide for Bridge Engineers and Designers

Highway Bridge Superstructure Engineering: LRFD Approaches to Design and Analysis provides a detailed discussion of traditional structural design perspectives, and serves as a state-of-the-art resource on the latest design and analysis of highway bridge superstructures. This book is applicable to highway bridges of all construction and material types, and is based on the load and resistance factor design (LRFD) philosophy. It discusses the theory of probability (with an explanation leading to the calibration process and reliability), and includes fully solved design examples of steel, reinforced and prestressed concrete bridge superstructures. It also contains step-by-step calculations for determining the distribution factors for several different types of bridge superstructures (which form the basis of load and resistance design specifications) and can be found in the AASHTO LRFD Bridge Design Specifications.

Fully Realize the Basis and Significance of LRFD Specifications

Divided into six chapters, this instructive text:

  • Introduces bridge engineering as a discipline of structural design
  • Describes numerous types of highway bridge superstructures systems
  • Presents a detailed discussion of various types of loads that act on bridge superstructures and substructures
  • Discusses the methods of analyses of highway bridge superstructures
  • Includes a detailed discussion of reinforced and prestressed concrete bridges, and slab-steel girder bridges

Highway Bridge Superstructure Engineering: LRFD Approaches to Design and Analysis can be used for teaching highway bridge design courses to undergraduate- and graduate-level classes, and as an excellent resource for practicing engineers.

Table of Contents


Structural Design Philosophies

General Design Concepts

Fundamentals of Structural Design Philosophies

Limit States Design Philosophies

LRFD Specifications for Highway Bridges

Differences between Various Design Methods: Summary

Historical Review of AASHTO Specifications for Highway Bridges

AASHTO LRFD Highway Bridge Design Specifications and Design Philosophies

AASHTO Interim Specifications

Scope of the AASHTO LRFD Bridge Design Specifications

Commentary to AASHTO LRFD Specifications

General Comments



Highway Bridge Superstructure Systems


AASHTO LRFD Spec-Specific Highway Bridge Superstructures

Description and Design Characteristics of Superstructure Systems in Table 2.1


Bridge Site and Geometry


Consideration of Future Widening


Bridge Esthetics


Loads on Highway Bridge Structures


AASHTO LRFD Highway Bridge Design Philosophy

Load Factors and Load Combinations for Construction Loads

Components of a Highway Bridge Structure

Dead Loads on a Highway Bridge Superstructure

Construction Loads

Live Loads on Highway Bridge Superstructures

Dynamic Effects of Vehicular Live Load

Fatigue Loading

Pedestrian Loads

Application of Design Live Loads on a Bridge Superstructure

Design Live Loads in Longitudinal Girders Supporting Bridge Decks

Envelopes for Moment and Shear Values

Tire Contact Area

Rail Transit Loads

Centrifugal Force (CE)

Braking Force (BR)

Vehicular Collision Force (CT)

Ice and Snow Loads

Wind Loads (WL and WS)

Earthquake Forces (EQ)

Earth Pressure (EH, ES, LS, and DD)

Force Effects Due to Superimposed Deformations: TU, TG, SH, CR, SE, and PS

Miscellaneous Forces for Design Considerations

Friction Forces (FR)



Structural Analysis of Highway Bridge Superstructures


Load Path in Bridge Structures

Analysis for Dead Load on Bridge Superstructures

Methods of Structural Analysis for Live Load on Bridge Superstructures

Approximate Analysis Methods for Live Loads: The Distribution Factor Concept

Considerations for Live Load Distribution Factors for Common Types of Bridge Superstructures

Calculations of Distribution Factors for Beams/Girders of Typical Superstructures

Special Analysis for Distribution Factors for Bending Moments and Shears in Exterior Girders

Correction Factors for Bridge Skew

Distribution Factors for Fatigue Limit State

Distribution Factors for Deflection Limit State

Illustrative Examples: Distribution Factors for Bending Moment and Shear

Application of Live Distribution Factors for Design Purposes

Distribution Factors for Special Loads with Other Traffic Loads

Live Load Distribution Factors for Bending Moments and Shear in Transverse Floor Beams

Methods of Refined Analysis

Distribution of Lateral Loads in Multibeam Bridges

Analysis of Concrete Slabs and Slab-Type Bridges for LRFD Live Loads



Concrete Bridges


Concrete Bridges and Aesthetics

Corrosion of Concrete Bridges

Material Properties

Design Procedures for Flexure in Section 5 of LRFD Specifications

Limits of Reinforcement: Art

Control of Cracking by Distribution of Reinforcement: Art

Service Limit State

Fatigue Limit State


Estimating the Area of Required Nonprestressed Tensile Reinforcement in Concrete Sections

Slab-Type Concrete Bridges and Concrete Decks

Concrete Decks

Design Examples

Design of Reinforced Concrete T-Beam Superstructures

Design of Deck Overhang and Barrier Walls

Slab-Precast, Prestressed Concrete Bridges



Slab–Steel Girder Bridges


Structural Forms and Characteristics of Steel Bridges

Corrosion of Steel Bridges

Construction Considerations

Mechanical Properties of Steel for Highway Bridges

Hybrid Steel Girders

Noncomposite and Composite Sections

Shored and Unshored Construction

Resistance Factors

Design Provisions for I-Section Flexural Members

Fatigue and Fracture Considerations

Design of Noncomposite Slab–Steel Girder Superstructures

Composite Slab–Steel Beam Superstructures

Design of Composite Slab-Girder Superstructures




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Narendra Taly, Ph.D, P.E., F.ASCE, is a professor (emeritus) of civil engineering at California State University, Los Angeles. He has more than 55 years of experience in the fields of civil and structural engineering design. This is his seventh book in the field of structural engineering.


"Professor Taly’s well-organized, well-balanced and thorough book is a welcome and timely addition to the technical literature of bridge engineering. The book distinguishes itself by its focused approach to practical highway bridge superstructure design. In addition to the thorough outline of specification development, load application, superstructure analysis and design, the book includes extensive worked examples of practical concrete and steel superstructures."
—John F. Unsworth, P.Eng., Chief Bridge Engineer, Canadian Pacific

"A well-presented and logically organized book of state-of-the-art knowledge of AASHTO LRFD-based highway superstructure design… Generally speaking, ‘Bridge Engineering’ encompasses many fields, such as planning, design, construction and maintenance…"
—Lian Duan, Ph.D., P.E., Senior Bridge Engineer and Steel Committee Chair, California Department of Transportation, Sacramento, California, USA


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