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FLOOD07468
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Last modified
1/25/2010 7:11:51 PM
Creation date
10/5/2006 3:00:44 AM
Metadata
Fields
Template:
Floodplain Documents
County
Statewide
Community
State of Colorado
Stream Name
All
Basin
Statewide
Title
The Design of Encroachments on Floodplains Using Risk Analysis
Date
10/1/1980
Prepared For
USDOT
Prepared By
Federal Highway Administration
Floodplain - Doc Type
Educational/Technical/Reference Information
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<br />e <br /> <br />e <br /> <br />e <br /> <br />The occupancy rate data will most often be site specific and the value of time <br />data may be based on statistical results such as those in the table below. <br /> <br />Income level/Year <br /> <br />Value of Time $/hr <br /> <br />Under $4000 <br />4000 - 5999 <br />6000 - 7999 <br />8000 - 9999 <br />10000 - 11999 <br />12000 - 14999 <br />15000 - 20000 <br /> <br />$2.26 <br />2.73 <br />3.19 <br />3.64 <br />4.11 <br />4.75 <br />5.03 <br />5.49 <br /> <br />Over 20000 <br /> <br />The value of time is computed from: <br /> <br /> <br />The vehicle occupant's, dollar loss due to use of the detour is: <br />TCl = (TC of Detour) - (TC for normal route) <br />Where: <br /> <br />Time is in hours (Detour Time) <br />length is in miles <br />Speed is in miles per hour <br />ADTE is in vehicles per day <br />Occupancy rate is in people per vehicle <br />Unit cost is in dollars per person per hour <br /> <br />Example: For the Row Creek crossing, the occupancy rate is two people/vehicle, <br />and the value of time is $4.75/hr, which is based on an average income level <br />of $12,000 to $15,000 for this section of the State. The value of time for <br />the normal route is: <br /> <br />_ TdQ(5)(6530)(2)(4.75) <br />TC(Q) - (!l!l)(24) = (TdQ)(235) $/hr <br /> <br />47 <br />
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