Practices for Ensuring the Smoothness of Concrete Bridge Decks (2022) / Chapter Skim
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Pages 39-46
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From page 39... ...
39 Overview Interviews were conducted with personnel from six state DOTs to obtain further information on the specification used by these state DOTs to ensure that smooth bridge decks are constructed. The state DOTs that were selected for the interview were those in Florida, Mississippi, Nevada, New Jersey, Ohio, and Utah.
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40 Practices for Ensuring the Smoothness of Concrete Bridge Decks criterion have been met. The surface is also required to meet a transverse criterion if determined necessary by the engineer.
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Case Examples 41 Mississippi DOT has been exploring introducing an IRI-based smoothness specification for bridge decks. They have been collecting data on new bridge decks after construction with an inertial profiler to compute the IRI levels that are currently being achieved on bridge decks.
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42 Practices for Ensuring the Smoothness of Concrete Bridge Decks Pay adjustments are not provided for AC overlays on bridge decks located on non-Interstates. The DOT uses several different smoothness specifications for AC overlays placed on bridges that are on the non-Interstate system.
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Case Examples 43 Case Example 5: Ohio DOT Ohio DOT is the first DOT in the United States to implement a standard smoothness specification on concrete bridge decks that was based on IRI. This specification was implemented in 2012.
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44 Practices for Ensuring the Smoothness of Concrete Bridge Decks Ohio DOT has 12 districts in Ohio, and bridge designs and specifications for bridges in each district are developed by the respective district offices. Each district had the option of using the smoothness specification for the bridge deck in a project.
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Case Examples 45 will collect the smoothness data on the bridge and perform any corrective action if required. Thereafter, the contractor is required to regroove areas that do not meet a specified criterion.
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46 Practices for Ensuring the Smoothness of Concrete Bridge Decks the collected data, the contractor must perform corrective action so that the specified MIRI criterion and the localized roughness threshold are met. Utah DOT encourages the contractors to provide the corrective action plan to the DOT for approval before performing corrective action.
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