Caltrans, Highway 254 Storm Damage Repair

Caltrans, Highway 254 Storm Damage Repair

The proposed project is located on Highway 254 at post mile (PM) 4.5 and from PM 11.1 to PM 11.3, in Humboldt County. The purpose of the proposed project is to permanently repair and reconstruct the drainage facilities and the roadways, which was damaged during the 2005/2006 winter storms. The proposed project will result in temporary and permanent impacts to waters of the U.S. and water of the State. The proposed scope of work includes: roadway excavation, grading and paving; removing and replacing culverts and underdrains; installing a culvert liner; installing rock slope protection (RSP) at culvert outfalls; and revegetating disturbed areas. In addition, Caltrans proposes to daylight approximately 21 linear feet of culverted waters at PM 11.18 to enhance the beneficial uses of the unnamed tributary and adjacent riparian zones. Additionally, the waters that flow through the culvert located at PM 11.16 will be directed back to historic drainage channel (pre-storm damage conditions), which will likely improve beneficial uses and reduce sediment transport into the Eel River. Caltrans has determined that temporary impacts to waters of the State (unnamed tributaries to Eel River) associated with construction would total 280 feet^2 (0.0064 acres). In addition, Caltrans has determined that the permanent impacts to jurisdictional waters associated with the installation of RSP would total 288 feet^2 (0.0067 acres).

Humboldt