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Long-range plan for short-span bridges
The King County Road Services
Division will start work next week to replace four small bridges
near Fall City – part of an ambitious multi-year program to replace 50
short-span bridges across the county.
Almost all the short span bridges owned by the county suffer from advanced deterioration with rotting wood timbers or undermined concrete supports. The ones earmarked for replacement range in age from 80 to 50 years old. “These bridges have actually held up well over the years, but now both the concrete and the wood short-span bridges are at the end of their design life,” said Bridge Engineer Jamie O’Day. The new bridges being designed and constructed are stronger, comply with modern safety standards, and meet current environmental regulations. In 2007, the Roads Division implemented a Short-Span Bridge Program to replace two to four bridges a year, and completed two projects north of Fall City. Because bridges less than 20 feet long do not qualify for federal funding, King County is footing the bill on each project. The price of replacing just one of these small bridges starts around $400,000 at current construction estimates.
Originally, the short-span work for 2008 was scheduled to begin in August, but preparations were accelerated. The project starting the week of July 21 is located on West Snoqualmie River Road near Jubilee Farms, which is north of Fall City and southwest of Carnation. The road will be closed in that location through September. The one exception is Sunday, July 27, when the road will be open to bicyclists for a previously scheduled bike race. The other projects will begin in late July or early August, and two will also require full road closures. They are located at: •308th Avenue Southeast on the east side of the Little League ball fields; and •264th Avenue Northeast south of State Route 202 and east of Ames Lake Road (intermittent road closures only). |
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