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The American Association of State Highway and Transportation Officials (AASHTO) is a standards setting body which publishes specifications, test protocols, and guidelines that are used in highway design and construction throughout the United States. Despite its name, the association represents not only highways but air, rail, water, and public ...
American Association of State Highway and Transportation Officials ... determination method or standard: SHA-1. data size. ... AASHTO USRN 1984-05-23.pdf; Page:AASHTO ...
Longer bridges can reduce the width of both shoulders to 4 feet (1.2 m). Existing bridges can remain part of the Interstate system if they have at least 12-foot-wide (3.7 m) lanes with 3.5-foot (1.1 m) shoulder on the left and a 10-foot (3.0 m) shoulder on the right, except that longer bridges can have 3.5 feet (1.1 m) shoulders on both sides.
To be included, the bridge should have a notable history of strikes. Many countries establish minimum standards for the structure gauge of bridges. For example, the United States requires a height of 14 feet (4.27 m) for highway bridges. [1] Some vehicle standards are made to conform to these expectations.
The 16 under-designed plates that failed were found to be only 1/2 inch thick when they should have been thicker to be in accordance with the American Association of State Highway and Transportation Officials (AASHTO) “Standard Specifications for Highway Bridges”, 1961. [4]
Highway designs in the US are subject to the AASHTO specifications, [4] [6] but the text does not contain specific procedures and recommendations. [2] Railway bridges are built according to the "Manual for Railway Engineering" [12] published by the American Railway Engineering and Maintenance-of-Way Association (AREMA).
The bridge inventory is developed for having a unified database for bridges, including the identification information; bridge types and specifications; operational conditions; and bridge data including geometric data, functional description, inspection data, etc. Bridge type and specifications classify the type of the bridge. That part provides ...
• AASHTO Design Guidelines for "Mountable" Curbs • AASHTO Guide Specification for Seismic Isolation Design • AASHTO 1998 Article 5.8 AASHTO 1998 Article 5.8 • AASHTO AMRL AASHTO Materials Reference Laboratory (AMRL) • AASHTO FRPS-1-UL Design of Bonded FRP Systems for Repair and Strengthening of Concrete Bridge Elements • AASHTO GFRP-1-UL LRFD Bridge Design Guide Specifications for ...