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AASHTO Journal
Southern State DOTs Win Regional Transportation Awards
Aug 31, 2022
Seven state department of transportation projects in Arkansas (along with Missouri), Georgia, South Carolina, Tennessee, Virginia, and West ...
AASHTO Responds to Proposed NEVI Program Rulemaking
Aug 26, 2022
The American Association of State Highway and Transportation Officials sent a 13-page letter to the Federal Highway Administration ...
Direct from the Source
Releases from AASHTO and State DOTs
Anthony Area D1 - Road Closure - Police Activity
Aug 31, 2022
Avoid ending your summer with a DUI
Aug 31, 2022
Southern State DOTs Win Regional 2022 America’s Transportation Awards
Aug 30, 2022
WASHINGTON—Seven state department of transportation projects in Arkansas (along with Missouri), Georgia, Missouri, South Carolina, Tennessee, Virginia, ...
Statement On U.S. Circuit Court Decision Regarding 5.9 GHz Spectrum
Aug 12, 2022
ITS America President & CEO Laura Chace, AASHTO Executive Director Jim Tymon React to Court Decision Today’s court ...
Mid America Region Winners Announced in 2022 America’s Transportation Awards Competition
Jul 27, 2022
WASHINGTON—Eight state department of transportation projects in Illinois, Iowa, Michigan, Minnesota, and Ohio won regional awards in ...
Posted: Aug 19, 2022
Posted: Aug 5, 2022
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Featured Publication
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Standard Specifications for Transportation Materials and Methods of Sampling and Testing, and AASHTO Provisional Standards, 42nd Edition, 2022, Single-User PDF Download
The Standard Specifications for Transportation Materials and Methods of Sampling and Testing, and AASHTO Provisional Standards (the "Materials Standards") contains specifications, recommended practices, and test methods commonly used in the construction of highway facilities. Provisional standards are also published to allow practitioners to use them early in the research or development phase. In addition to typical revisions to harmonize industry standards, update technology, and generally improve the standards, the 42nd edition includes numerous changes related .....
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AASHTO Guide for the Planning, Design, and Operation of Pedestrian Facilities, 2nd Edition
This guide provides guidance on the planning, design, and operation of pedestrian facilities along and across streets and highways. Specifically, the guide focuses on identifying effective measures for accommodating pedestrians on public rights-of-way, as well as describing appropriate methods for accommodating pedestrians, which vary among roadway and facility types. It also recognizes the profound effect that land use planning and site design have on pedestrian mobility. The guide is designed for use by planners, roadway .....
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AASHTO LRFD Bridge Design Specifications, 9th Edition
The AASHTO LRFD Bridge Design Specifications are intended for use in the design, evaluation, and rehabilitation of bridges. The specifications employ the Load and Resistance Factor Design (LRFD) methodology, using factors developed from current statistical knowledge of loads and structural performance. This 9th edition includes revisions to almost all sections of the specifications. -
Guide Specifications for Highway Construction, 10th Edition with 2022 Supplement
These guide specifications provide guidance for developing transportation contract specifications and are the national standard for best practices in highway and road construction. This consensus-based guide is used by states and local agencies as a standard requirement for roadway construction contracts and is a basis for those agencies to use in developing their own construction specifications. This edition focuses on electronic submittals, updated environmental requirements, and revised materials specifications. The guide is designed for use .....
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Mechanistic-Empirical Pavement Design Guide: A Manual of Practice, 3rd Edition with 2021 Supplement
This 2020 3rd edition includes the following revisions and updates from the previous 2015 2nd edition: new fracture mechanics-based model for reflective cracking in AC overlays over flexible, semi-rigid, and rigid pavements; new mechanistic-empirical model for short jointed plain concrete pavement (SJPCP) overlays of flexible pavements; new flexible and semi-rigid pavement global calibration coefficients; addition of non-structural preventative maintenance treatment consideration for flexible and rigid pavements; addition of five level 3 default distributions for normalized axle load spectra (.....
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About AASHTO
AASHTO – The American Association of State Highway and Transportation Officials – is a nonprofit, nonpartisan association representing highway and transportation departments in the 50 states, the District of Columbia, and Puerto Rico. It represents all transportation modes, including air, highways, public transportation, active transportation, rail, and water. Its primary goal is to foster the development, operation, and maintenance of an integrated national transportation system.
AASHTO works to educate the public and key decision-makers about the critical role that transportation plays in securing a good quality of life and sound economy for our nation. AASHTO serves as a liaison between state departments of transportation and the Federal government. AASHTO is an international leader in setting technical standards for all phases of highway system development. Standards are issued for design, construction of highways and bridges, materials, and many other technical areas.