Jan Road Levee Setback

Date: 2022
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Description

Located in unincorporated King County near Hobart, the original levee was removed and replaced with an extended levee set back from the Cedar River. According to the King County project page, the new levee will "reduce overflows from Taylor Creek over the road and into the neighborhood. The setback levee will also create more space for flood flows and enhancement of fish habitat along the Cedar River."

The levee is designed to "reduce flood and erosion risks to the people, property, and infrastructure in the area." When Taylor Creek overflows, for example, it can cut off access to the main road to approximately 15 single-family homes. The levee also protects the Cedar River Trail and State Route 169.

Materials

6,600 tons of Pond Liner
4,400 tons of Class 4 Riprap
2,800 tons of 4" Streambed Cobbles
1,500 tons of 5-Man Quarry Rock
1,500 tons of 5-Man Streambed Boulders
1,400 tons of Trommel Borrow (6" Minus)
1,100 tons of Streambed Sediment
400 tons of Crushed Surfacing Base Course (CSBC)
300 tons of Ultrafine Sand
200 tons of 4"–8" Quarry Spalls

Highlights

Washington Rock produced and transported material for contractor Active Construction (ACI). The project required over 23,000 tons of a wide variety of construction aggregates, including over 200 truckloads of Pond Liner alone.

Our rock not only provides structure and strength, it also creates habitat for fish and provides beauty to the stream environment.