Effects of overweight vehicles on New York State DOT infrastructure.
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2015-09-01
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Abstract:This report develops a methodology for estimating the effects of different categories of overweight
trucks on NYSDOT pavements and bridges. A data mining algorithm is used to categorize truck
data collected at several Weigh-In-Motion stations around the state of New York based on the
trucks’ adherence to the state’s legal weight limits. The data indicate that about 11% of the trucks
traveling on New York highways may be carrying divisible load permits, 1% may be carrying
special hauling permits, while about 6% may be illegally overweight
The analysis shows that these overweight trucks are increasing the risk to failure of bridges by
causing stresses above those specified in design specifications and by reducing bridge service
(fatigue) lives through repetitive overloading. A monetization of the safety margin utilization due
to the combined overstress and cyclic fatigue shows that trucks carrying divisible load permits
may be responsible for $50M per year in NYS bridge infrastructure cost, trucks with special
hauling permits may be responsible for $2M/yr in additional cost while illegally overweight trucks
may be responsible for $43M per year for a total of $95M/yr.
The cost allocation study performed on the NYS pavement network shows that the cost to
NYS pavements due to overweight trucks is about $145M/yr divided into $78M/yr for divisible load
permits, $7M/yr for special hauling permits and $60M/yr for illegally overweight trucks.
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