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AASHTO-American Association of State Highway and Transportation Officials
American Association of State Highway and Transportation Officials (AASHTO) Standards
The American Association of State Highway and Transportation Officials (AASHTO) is a leading organization that develops and publishes technical standards, specifications, guidelines, and industry resources for the transportation sector.
AASHTO standards cover a wide range of applications, including highway design, road construction, bridge engineering, transportation infrastructure, maintenance, public transit, railways, aviation, and water transportation.
Engineers, contractors, transportation agencies, and industry professionals rely on AASHTO publications to support infrastructure planning, design, construction, inspection, and maintenance while promoting safety, quality, and consistency across transportation projects.
At e-Standards Portal, you can explore AASHTO standards, technical specifications, and related publications to find the technical information you need for your engineering and transportation projects.
AASHTO LRFDSEIS-2-I1-2012 PDF
The 2012 interim contains updated information for the AASHTO Guide Specifications for LRFD Seismic B..
AASHTO LRFDSEIS-2-I2-2013 PDF
The 2014 interim contains updated information for the AASHTO Guide Specifications for LRFD Seismic B..
AASHTO LRFDSEIS-2-I3-2014 PDF
The 2015 interim contains updated information for the AASHTO Guide Specifications for LRFD Seismic B..
AASHTO LRFDSEIS-2-I4-2022 PDF
2022 Interim Revisions, Guide Specifications for LRFD Seismic Bridge Design, 2nd Edition. The revisi..
AASHTO LRFDSEIS-3-2023 PDF
The AASHTO Guide Specifications for LRFD Seismic Bridge Design, Third Edition (2023), cover the desi..
AASHTO LRFDSEIS-3-E1-2024 PDF
Errata for AASHTO Guide Specifications for LRFD Seismic Bridge Design, 3rd Edition. It records the c..
AASHTO LRFDSFS-1-2023 PDF
The AASHTO LRFD Steel Bridge Fabrication Specifications, First Edition (2023), govern the furnishing..
AASHTO LRFDSFS-1-I1-2024 PDF
The LRFD Steel Bridge Fabrication Specifications , 1st Edition (Item Code: LRFDSFS-1), published in ..
AASHTO LRFDSFS-1-I2-2025 PDF
The LRFD Steel Bridge Fabrication Specifications , 1st Edition (Item Code: LRFDSFS-1), published in ..
AASHTO LRFDTUN-1-2017 PDF
AASHTO LRFDTUN-1, LRFD Road Tunnel Design and Construction Guide Specifications, First Edition (2017..