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Multi-modal design philosophies have been described using a variety of names, including context sensitive solutions; practical design and complete streets. Regardless of the name, the ultimate goal is always to design a safe transportation system that supports a greater quality of life and robust economy.Bud WrightAASHTO Executive Director
America’s Transportation Awards showcase the outstanding transportation projects that improve travel and quality of life in the United States. Through these awards, we recognize state DOTs for their diligent efforts to help improve the quality of life and economic prosperity in communities across the country.Paul TrombinoAASHTO President, and Director, Iowa DOT
This handbook has been developed for use by contractors and construction engineers involved in bridge construction. This document may also be of interest to falsework design engineers, and supplements information found in the Guide Design Specifications for Bridge Temporary Works (see related item). The content is construction-oriented, focusing primarily on standards of material quality and means and methods of construction. The handbook contains chapters on falsework, formwork, and temporary retaining structures.
These design specifications have been updated to reflect the current state of the practice for the design and construction of falsework, formwork, and temporary retaining structures. The layout of the information is generally the same as the first edition, however the construction provisions have been moved to the AASHTO LRFD Bridge Construction Specifications (see related item). The loads in Section 2—Falsework have been significantly revised, and both ASD and LRFD design specifications are .....
This manual presents uniform guidelines and procedures pertaining to the unique structural, mechanical, electrical, and operational characteristics of movable highway bridges. The manual was developed for bridge engineers, inspectors, and maintainers charged with operational and maintenance responsibilities for these complex structures. Commentary adjacent to the text provides suggestions on implementing the guidelines and procedures, and directs the reader to additional sources of information. This manual supersedes the 1998 first edition.
This manual encourages consistency in testing and evaluation of roadside safety features. It includes a new matrix for cable barrier testing on slopes, modifications to several test vehicle dimensions, and updated test documentation requirements.
Standard Specifications for Transportation Materials and Methods of Sampling and Testing, and AASHTO Provisional Standards, Single User Web-Based One-Year Subscription
The AASHTO Materials Book contains specifications, test methods, and provisional standards commonly used in the construction of highway facilities.
It is available as a one-year online subscription. When you subscribe, you will automatically receive access to all updates published during your subscription period, as well as access to recent past editions, with changes between editions highlighted for ease of reference.
The Materials Book is updated three times per year, in mid-April, mid-June, .....
AASHTO – The American Association of State Highway 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 five transportation modes: air, highways, public 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.