29 Mar

File:State Route 20.png

Data are from fall 1972 to fall 2012 inclusive.
← Older revision
Revision as of 23:23, 29 March 2013
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{{Information

{{Information
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|Description=Probability chart for [[Washington State Route 20]] (North Cascades Highway) first opening/final closing dates. Data are from fall 1972 to spring 2007 inclusive. I ignored the winter of 1976-1977 when the highway did not close. http://www.wsdot.wa.gov/Traffic/Passes/NorthCascades/closurehistory.htm
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|Description=Probability chart for [[Washington State Route 20]] (North Cascades Highway) first opening/final closing dates. Data are from fall 1972 to fall 2012 inclusive. I ignored the winter of 1976-1977 when the highway did not close. http://www.wsdot.wa.gov/Traffic/Passes/NorthCascades/closurehistory.htm

|Source={{Own}}

|Source={{Own}}
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|Date=2007-10-16
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|Date=2013-03-29

|Author=[[User talk:Wsiegmund|Walter Siegmund]]

|Author=[[User talk:Wsiegmund|Walter Siegmund]]

|Permission=

|Permission=

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