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AASHTO LRFDUS

AASHTO LRFD Bridge Design Specifications

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Organization: AASHTO
Publication Date: 1 January 2012
Status: inactive
Page Count: 1,661
scope:

SCOPE OF THE SPECIFICATIONS

The provisions of these Specifications are intended for the design, evaluation, and rehabilitation of both fixed and movable highway bridges. Mechanical, electrical, and special vehicular and pedestrian safety aspects of movable bridges, however, are not covered. Provisions are not included for bridges used solely for railway, rail-transit, or public utilities. For bridges not fully covered herein, the provisions of these Specifications may be applied, as augmented with additional design criteria where required.

These Specifications are not intended to supplant proper training or the exercise of judgment by the Designer, and state only the minimum requirements necessary to provide for public safety. The Owner or the Designer may require the sophistication of design or the quality of materials and construction to be higher than the minimum requirements.

The concepts of safety through redundancy and ductility and of protection against scour and collision are emphasized.

The design provisions of these Specifications employ the Load and Resistance Factor Design (LRFD) methodology. The factors have been developed from the theory of reliability based on current statistical knowledge of loads and structural performance.

Methods of analysis other than those included in previous Specifications and the modeling techniques inherent in them are included, and their use is encouraged.

Seismic design shall be in accordance with either the provisions in these Specifications or those given in the AASHTO Guide Specifications for LRFD Seismic Bridge Design.

The commentary is not intended to provide a complete historical background concerning the development of these or previous Specifications, nor is it intended to provide a detailed summary of the studies and research data reviewed in formulating the provisions of the Specifications. However, references to some of the research data are provided for those who wish to study the background material in depth. The commentary directs attention to other documents that provide suggestions for carrying out the requirements and intent of these Specifications. However, those documents and this commentary are not intended to be a part of these Specifications.

Construction specifications consistent with these design specifications are the AASHTO LRFD Bridge Construction Specifications. Unless otherwise specified, the Materials Specifications referenced herein are the AASHTO Standard Specifications for Transportation Materials and Methods of Sampling and Testing.

The term "notional" is often used in these Specifications to indicate an idealization of a physical phenomenon, as in "notional load" or "notional resistance." Use of this term strengthens the separation of an engineer's "notion" or perception of the physical world in the context of design from the physical reality itself.

The term "shall" denotes a requirement for compliance with these Specifications.

The term "should" indicates a strong preference for a given criterion.

The term "may" indicates a criterion that is usable, but other local and suitably documented, verified, and approved criterion may also be used in a manner consistent with the LRFD approach to bridge design.

Document History

November 1, 2017
AASHTO LRFD Bridge Design Specifications
FOREWORD The first broadly recognized national standard for the design and construction of bridges in the United States was published in 1931 by the American Association of State Highway Officials...
September 1, 2017
AASHTO LRFD Bridge Design Specifications
SCOPE OF THE SPECIFICATIONS The provisions of these Specifications are intended for the design, evaluation, and rehabilitation of both fixed and movable highway bridges. Mechanical, electrical, and...
January 1, 2014
AASHTO LRFD Bridge Design Specifications
SCOPE OF THE SPECIFICATIONS The provisions of these Specifications are intended for the design, evaluation, and rehabilitation of both fixed and movable highway bridges. Mechanical, electrical, and...
January 1, 2014
AASHTO LRFD Bridge Design Specifications
The provisions of these Specifications are intended for the design, evaluation, and rehabilitation of both fixed and movable highway bridges. Mechanical, electrical, and special vehicular and...
January 1, 2014
AASHTO LRFD Bridge Design Specifications
SCOPE OF THE SPECIFICATIONS The provisions of these Specifications are intended for the design, evaluation, and rehabilitation of both fixed and movable highway bridges. Mechanical, electrical, and...
January 1, 2013
AASHTO LRFD BRIDGE DESIGN SPECIFICATIONS
SCOPE OF THE SPECIFICATIONS  The provisions of these Specifications are intended for the design, evaluation, and rehabilitation of both fixed and movable highway bridges. Mechanical, electrical, and...
June 1, 2012
AASHTO LRFD Bridge Design Specifications
A description is not available for this item.
AASHTO LRFDUS
January 1, 2012
AASHTO LRFD Bridge Design Specifications
SCOPE OF THE SPECIFICATIONS The provisions of these Specifications are intended for the design, evaluation, and rehabilitation of both fixed and movable highway bridges. Mechanical, electrical, and...
January 1, 2012
AASHTO LRFD Bridge Design Specifications
SCOPE OF THE SPECIFICATIONS The provisions of these Specifications are intended for the design, evaluation, and rehabilitation of both fixed and movable highway bridges. Mechanical, electrical, and...
January 1, 2010
AASHTO LRFD Bridge Design Specifications
SCOPE OF THE SPECIFICATIONS The provisions of these Specifications are intended for the design, evaluation, and rehabilitation of both fixed and movable highway bridges. Mechanical, electrical, and...
January 1, 2010
AASHTO LRFD Bridge Design Specifications
INTRODUCTION General Add the following paragraph to the end of this Article: The Strength I Limit State in the AASHTO LRFD Design Specifications has been calibrated for a target reliability index...
January 1, 2010
AASHTO LRFD Bridge Design Specifications
SCOPE OF THE SPECIFICATIONS The provisions of these Specifications are intended for the design, evaluation, and rehabilitation of both fixed and movable highway bridges. Mechanical, electrical, and...
April 1, 2009
AASHTO LRFD Bridge Design Specifications - Customary U.S. Units
SCOPE OF THE SPECIFICATIONS The provisions of these Specifications are intended for the design, evaluation, and rehabilitation of both fixed and movable highway bridges. Mechanical, electrical, and...
January 1, 2008
AASHTO LRFD Bridge Design Specifications - Customary U.S. Units
SCOPE OF THE SPECIFICATIONS The provisions of these Specifications are intended for the design, evaluation, and rehabilitation of both fixed and movable highway bridges. Mechanical, electrical, and...
November 15, 2007
AASHTO LRFD Bridge Design Specifications - Customary U.S. Units
SCOPE OF THE SPECIFICATIONS The provisions of these Specifications are intended for the design, evaluation, and rehabilitation of both fixed and movable highway bridges. Mechanical, electrical, and...
January 1, 2007
AASHTO LRFD Bridge Design Specifications - Customary U.S. Units
SCOPE OF THE SPECIFICATIONS The provisions of these Specifications are intended for the design, evaluation, and rehabilitation of both fixed and movable highway bridges. Mechanical, electrical, and...
January 1, 2007
AASHTO LRFD Bridge Design Specifications - Customary U.S. Units
SCOPE OF THE SPECIFICATIONS The provisions of these Specifications are intended for the design, evaluation, and rehabilitation of both fixed and movable highway bridges. Mechanical, electrical, and...
January 1, 2004
AASHTO LRFD Bridge Design Specifications - Customary U.S. Units
The provisions of these Specifications are intended for the design, evaluation, and rehabilitation of both fixed and movable highway bridges. Mechanical, electrical, and special vehicular and...
January 1, 2004
AASHTO LRFD Bridge Design Specifications - Customary U.S. Units
SCOPE OF THE SPECIFICATIONS The provisions of these Specifications are intended for the design, evaluation, and rehabilitation of both fixed and movable highway bridges. Mechanical, electrical, and...
January 1, 2004
AASHTO LRFD Bridge Design Specifications - Customary U.S. Units
FOREWORD The first broadly recognized national standard for the design and construction of bridges in the United States was published in 193 1 by the American Association of State Highway Officials...
January 1, 1998
AASHTO LRFD Bridge Design Specifications - U.S. Units
A description is not available for this item.
January 1, 1998
AASHTO LRFD Bridge Design Specifications - U.S. Units
FOREWORD The first broadly recognized national standard for the design and construction of bridges in the United States was published in 193 1 by the American Association of State Highway Officials...
January 1, 1998
AASHTO LRFD Bridge Design Specifications - U.S. Units
A description is not available for this item.
January 1, 1998
AASHTO LRFD Bridge Design Specifications - U.S. Units
A description is not available for this item.
January 1, 1998
AASHTO LRFD Bridge Design Specifications - Customary U.S. Units
The provisions in this section apply to the design of bridge and retaining wall components constructed of normal density or lightweight concrete and reinforced with steel bars and/or prestressing...

References

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