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AASHTO re:source, formerly the AASHTO Materials Reference Laboratory (AMRL), accredits laboratories. Accreditation is often required to submit test results to state DOTs. For example, a contract for the construction of a highway bridge may require a minimum compressive strength for the concrete used. The contract will specify AASHTO Test ...
• 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 ...
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.
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. In much of the United States, the maximum height of a semi truck , in the absence of an approved overheight permit, is 13 feet, 6 inches (4.12 m). [ 2 ]
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]
NBI is a template that simplifies and better organizes reference calls to the Federal Highway Administration's (FHWA) National Bridge Inventory (NBI), an annually published data set on all bridges at least 20 feet (6.1 m) in length in the United States. This data includes the coordinates of the bridge, bridge type, when the bridge was built and ...
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 ...
Pontis is a software application developed to assist in managing highway bridges and other structures. Known as AASHTOWare Bridge Management since version 5.2, Pontis stores bridge inspection and inventory data based on the U.S. Federal Highway Administration (FHWA) National Bridge Inventory system coding guidelines.