State Route 1 Point Arena/Westport Sink Storm Damage Permanent Restoration Project
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Summary
- SCH Number
- 2008082087
- Lead Agency
- Caltrans 3 (Marysville) (California Department of Transportation, District 3)
- Document Title
- State Route 1 Point Arena/Westport Sink Storm Damage Permanent Restoration Project
- Document Type
- FIN - Final Document
- Received
- Present Land Use
- Zoned Remote Residential (PM 74.74 & 75.89) Zoned highway commercial and agricultural exclusive (PM 14.85)
- Document Description
- The heavy rains that occurred during the 2005/2006-winter season caused large amounts of erosion to occur at three locations along State Route (SR) 1 in Mendocino County. The pavement at post mile (PM) 14.85 in Point Arena failed from undermining and piping of storm water through voids at failing joints of a large culvert. At PM 74.74 south of Westport, scour and headcutting (abrupt change in elevation causing erosion) at the outfall of a 24-inch (in) reinforced concrete pipe culvert has caused the loss of part of the roadway embankment as well as several sections of pipe. At PM 75.89, a portion of roadway has settled two to three feet as part of a larger landslide that includes the slopes above and below the road. Additionally, headcutting (abrupt change in elevation causing erosion) of the steep embankment under the outlet of the downdrains is working up toward the roadway and adds a considerable amount of erosion to the beach and bluff environment every time it rains.
- Contact Information
-
Beth Thompson
California Department of Transportation, District #3
2389 Gateway Oaks Drive, Suite 100
Sacramento, CA 95833
Phone : (916) 274-0571
Location
- Cities
- Point Arena
- Counties
- Mendocino
- Cross Streets
- Bruhel Point Road (PM 74.74,75.89), Iverson Avenue, Curly Lane (PM 14.85)
- Zip
- 95437,68
- Parcel #
- 027-141-03,05; 015-010-42,43 (PM 14.85); 015-010-42 (PM 74.74); 015-010-043 (PM 75.89)
- State Highways
- 1, 253 (PM 14.85)
- Schools
- Arena ES, Joint Union HS, Pacific Com.Charter, S. Coast Cont., C
- Waterways
- Pacific Ocean (all), Point Arena Creek, Hathaway Creek, Blue Side Gulch, Chadbourne Gulch
- Other Location Info
- City/Nearest Community: Westport
- Other Information
- Schools cont'd: Charter Schools: Elementary and High School (PM 14.85)
Notice of Completion
- Development Type
- Transportation:Other (Storm Bridge damage)
- Project Issues
- Coastal Zone Drainage/Absorption Flood Plain/Flooding Soil Erosion/Compaction/Grading Toxic/Hazardous Traffic/Circulation Vegetation Water Quality Water Supply Wetland/Riparian Wildlife Cumulative Effects
Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.