Usage
In planning for a prolonged closure of the bridge for the east-half replacement, the Washington State Department of Transportation conducted a five-day survey of bridge usage in early June 1998 in order to assess closure impact and plan effective mitigation strategies. The survey was in three stages: A video camera count of traffic on weekdays (Tuesday and Wednesday) and a weekend (Friday through Sunday) to estimate average volume; the use of that video to record license plate numbers for vehicle registration addresses to assess which communities would be most affected; and the mailing of a questionnaire to the registered owners of those vehicles seeking information on trip origin, destination, and purpose, and choice of travel alternatives during a bridge closure.
The video count produced a weekday average of 14,915 trips/day and a weekend average of 18,759 trips/day. Peak volumes reach 20,000 vehicles on summer weekends. The vehicle registration information indicated that a majority of trips were by residents of communities near the bridge. The most represented communities were, in numerical order, Port Ludlow (8%), Port Townsend (7%), Port Angeles (6%), Seattle (6%), Sequim (5%), Poulsbo (5%), Bremerton (4%), Port Hadlock (2%), and Silverdale (2%).
The questionnaires revealed that a majority of trips were to and/or from communities near the bridge. On the weekend 48% of westbound trips originated on the north and central Kitsap Peninsula, with 88% of the destinations in areas near Port Ludlow, Port Townsend, Sequim, and Port Angeles. For weekday trips, nearly 55% of westbound trips originated in northern or central Kitsap County with 90% of the destinations in the Port Ludlow, Port Townsend, Sequim, and Port Angeles areas. A large number of eastbound weekday morning trips appeared to be for commuting purposes, with 92% of originating in Port Ludlow, Port Townsend, Sequim, or Port Angeles, and 60% with central or northern Kitsap County as a destination, and 32% ending in the Seattle metropolitan area. The evening westbound trips seemed to mirror the morning patterns. When asked the purpose of their trips, respondents reported that for weekend trips 21% were for recreational, 21% for social, 19% for personal, 18% for work, 6% for business, and 4% for medical reasons. For weekday trips 33% were for work, 17% for personal, 14% for business, 11% for medical, 9% for social, and 8% for recreational reasons.
Read more about this topic: Hood Canal Bridge
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