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Estimating traffic volumes on bridges from nearby counters

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TranspoLove

Civil/Environmental
Jul 27, 2013
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Has anyone seen a methodology (for planning stage design) to estimate traffic counts on bridges from nearby traffic counters?

For example, consider highway A that is 20 miles long. on Highway A there might be 4 interchanges, 15 bridges and culverts and two traffic counters.

Is there a methodology to estimate the traffic count on these bridges and culverts perhaps at a high-level such as High, medium, or low based on adjacent traffic counters?
 
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