In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Become an ACI Member
Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
American Concrete Institute
38800 Country Club Dr.
Farmington Hills, MI
Feedback via Email
Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: 345.2R-98: Guide for Widening Highway Bridges (Reapproved 2005)
Author(s): ACI Committee 345
Publication: Technical Documents
Appears on pages(s): 14
Abstract:Note: A newer version of this document exists. This document was replaced by 345.2R-13.
Many highway bridges become functionally obsolete due to inadequate width before they become structurally deficient. Because widening is almost always more ecnomical than complete replacement, there is a need to make available the results of research and field experience pertaining to the widening of bridges. This guide discusses many problems that are unique to the widening of existing concrete bridges and bridges with concrete decks. The primary focus of this document is on bridge deck. However, substructure issues are also raised and discussed. The effects of differential movements due to traffic on the existing and new portions, including movements due to traffic on the existing structure during construction, are discussed. General recommendations are made pertaining to the choice of structure type, design details and construction methods and materials.
Note: A newer version of this document exists. This document was replaced by 345.2R-13.