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October Surprise 2024

Load Ratings for Standard Bridges, Phase III – Iowa

The standard bridges had previously been rated for the existing three Iowa Rating Vehicles, Type 4, Type 3S3A, and Type 3-3, in 1982 or 1991. The results of those ratings have been included in this report. The Type 3S3A Iowa Rating Vehicle in this report was designated a Type 3S3 vehicle in the 1982 and 1991 reports.