ACI 345.2R-98-Guide for Widening Highway Bridges

ACI 345.2R-98-Guide for Widening Highway Bridges

Many highway bridges become functionally obsolete due to inadequate width before they become structurally deficient. Because widening is almost always more economical 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.

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ACI 345.2R-98-Guide for Widening Highway Bridges
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