Winter 2007
Background to Specifications
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Spring 2007
Process for Revisions and Additions
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Summer 2007
2007 Interim Changes
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Fall 2007
More 2007 Interim Changes
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Winter 2008
2008 Interim Changes Part 1
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Spring 2008
Safety and the LRFD Specifications
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Summer 2008
2008 Interim Changes Part 2
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Fall 2008
Load Modifier for Ductility, Redundancy,
and Operational Importance
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Winter 2009
2009 Interim Changes Part 1
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Spring 2009
2009 Interim Changes Part 2
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Summer 2009
Development of the HL-93 Notional Live
Load Model
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Fall 2009
The HL-93 Notional Live Load
Model: What Nature of Truck Does It Represent
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Winter 2010
Slab-on-Beam Bridge Live Load
Distribution Factors
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Spring 2010
2010 Interim Revisions Related to
Concrete Structures Part 1
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Summer 2010
2010 Interim Revisions Related to
Concrete Structures Part 2
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Fall 2010
The HL-93 Live Load Model Dynamic Load
Allowance
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Winter 2011
The Strut-and-Tie Model: Visualizing
Load Paths
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Spring 2011
2011 Interim Revisions Related to
Concrete Structures
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Summer 2011
The Fatigue Limit States, Part 1
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Fall 2011
The Fatigue Limit States, Part 2
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Winter 2012
The Fatigue Limit States, Part 3
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Spring 2012
A Question of Application and
Interpretation
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Summer 2012
2012 Interim Changes Related to Concrete
Structures
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Fall 2012
Longitudinal Reinforcement to Resist
Shear
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Winter 2013
Shear Resistance, Part 1
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Spring 2013
Shear Resistance, Part 2
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Summer 2013
2013 Interim Changes Related to Concrete
Structures
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Fall 2013
How Does Cracked Concrete Carry Shear?
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Winter 2014
Sectional Design Model: Maximum or
Concurrent Force
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Spring 2014
2014 Interim Changes Related to
Concrete Structures
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Summer 2014
Load Rating Concrete Bridges: Part 1
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Special Notice: Bridges Composed of Simple Span, Precast
Concrete Girders Made Continuous
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Fall 2014
Load Rating Concrete Bridges: Part 2
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Winter 2015
Load Rating Concrete Bridges: Part 3
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Spring 2015
2015 Interim Changes Related to
Concrete Structures
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Summer 2015
Reorganization of Section 5
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Fall 2015
Minimum Longitudinal Reinforcement
Revisited
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Winter 2016
2016 Interim Changes Related to Concrete
Structures
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Spring 2016
2016 Interim Changes Related to
Concrete Structures, Part 2
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Summer 2016
The AASHTO LRFD Bridge Specifications:
Torsional Resistance
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Fall 2016
The AASHTO LRFD Bridge Design
Specificatons: A Retrospective
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Winter 2017
The AASHTO LRFD Bridge Design
Specifications: Section 5 Reorganization
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Spring 2017
The AASHTO LRFD Bridge Design
Specifications: Combined Shear and Torsion
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Summer 2017
Combined Shear and Torsion
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Fall 2017
Moving Forward
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Winter 2018
AASHTO LRFD Bridge Design
Specifications: Stress Calculations and Prestress Loss Estimates
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Spring 2018
Benefits of a Reorganized Article
on Presetressing
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Summer 2018
Segmental Bridges: Guide Specifications
and AASHTO LRFD Bridge Design Specifications
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Fall 2018
Upcoming Changes to the AASHTO LRFD Bridge
Design Specifications
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Winter 2019
Bridge Design Specifications: Stability
of Pretensioned Concrete Girders
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Spring 2019
Bridge Design Specifications:
Service IV Load Combination
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Summer 2019
Factored Axial Resistance
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Fall 2019
Upcoming Changes to the AASHTO Bridge
Specifications
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Winter 2020
The Effects of Strand Debonding
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Spring 2020
Structural Design Based on
Strut-and-Tie Modeling
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Summer 2020
Anchors in Concrete: Guidance for Bridge
Engineers - Part 1 of a Four-Part Series
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Column Ties for Nonseismic Applications
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Fall 2020
Anchors in Concrete: The Tools to Find
Acceptable Concrete Anchors - Part 2 of a four-part series
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Winter 2021
LRFD - Anchores in Concrete: Drawing
Details to Identify and Procure Concrete Anchors via Specification
Special Provisions - Part 3 of a four-part series
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Spring 2021
LRFD - Anchores in Concrete:
Drawing Details to Identify and Procure Concrete Anchors via
Specification Special Provisions - Part 4 of a four-part series
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Summer 2021
LRFD - Crack-Control
Reinforcement: Strength and Serviceability Implications
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Fall 2021
LRFD —Approved Changes to the
Ninth Edition AASHTO LRFD Bridge Design Specifications
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Winter 2022
LRFD -
Details on Several Upcoming Changes to the AASHTO
LRFD Bridge Design Specifications
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Spring 2022
LRFD -Two Upcoming Changes to the
AASHTO LRFD Bridge Design Specifications
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Summer 2022
LRFD - Details on Two Upcoming Changes to the
AASHTO LRFD Bridge Design Specifications: Creep and Shrinkage
Estimates and Regions Requiring Minimum Transverse Reinforcement
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Fall 2022
LRFD - Approved Changes to the Ninth Edition
AASHTO LRFD Bridge Design Specifications
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Winter 2023
LRFD - Approved Changes to the Ninth Edition
AASHTO LRFD Bridge Design Specifications: Reinforcing Bar
Anchorage
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Spring 2023
LRFD - Approved Changes to the Ninth Edition
AASHTO LRFD Bridge Design Specifications: Use of
0.7-in.-Diameter Strands in Precast, Pretensioned Concrete Girders
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Summer 2023
LRFD - Details on Two Changes to the Ninth Edition
AASHTO LRFD Bridge Design Specifications
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Fall 2023
LRFD - Recently Approved Changes to the Ninth Edition
AASHTO LRFD Bridge Design Specifications -
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Winter 2024
LRFD - Approved Changes to the Ninth Edition
AASHTO LRFD Bridge Design Specifications
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Spring 2024
LRFD -
Approved Changes to the Ninth Edition
AASHTO LRFD Bridge Design Specifications
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Summer 2024
LRFD - Approved Changes to the Ninth Edition
AASHTO LRFD Bridge Design Specifications
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Fall 2024
LRFD -
AASHTO LRFD Bridge Design Specifications:
Substructure Design Using Strut-and-Tie-Modeling
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Winter 2025
LRFD -
Shear-Friction Design Provisions of the
AASHTO LRFD Bridge Design Specifications
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