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Patterson Creek Bridge project wraps up, Southeast Duthie Hill Road reopens
Construction is nearly complete on the Patterson Creek Bridge replacement project, and Southeast Duthie Hill Road near State Route 202 was slated to reopen this week, once final paving and striping, and testing of the traffic signal are complete.
The project started in mid-August to replace the two-lane, 60-year-old Patterson Creek Bridge. The bridge, located between Sammamish and Fall City, was built in 1951 and its creosote-treated timber supports were decaying.
The replacement bridge will increase safety and improve traffic flow for the more than 5,200 vehicles that use the road daily. The new bridge is 38 feet wide with two 11-foot-wide traffic lanes and 8-foot-wide shoulders. The old bridge was 24 feet wide with narrow shoulders.
Approaches to the bridge were built on Geofoam – light-weight Styrofoam – to better support the roadway across the weak peat soils and avoid settling.
More information about the $3.1 million project is posted on the project website.