American Dark Fiber Middle Mile Broadband Project ADF-F20-CD4-UGA & ADF-F19-CD4-UGA
Summary
SCH Number
2026050234
Public Agency
California Department of Transportation, District 4
(DOT)
Document Title
American Dark Fiber Middle Mile Broadband Project ADF-F20-CD4-UGA & ADF-F19-CD4-UGA
Document Type
NOE - Notice of Exemption
Received
Posted
5/7/2026
Document Description
American Dark Fiber, in coordination with the California Department of Technology, proposes installation of approximately 50,550 feet of underground 1.25-inch and 2-inch high-density polyethylene conduit with fiber optic cable within Caltrans right-of-way (ROW) along State Route (SR) 1 and SR-116 in Sonoma County, California. Methods of conduit installation include narrow trenching and horizontal directional drilling (HDD), to be done in accordance with the traffic control plan. Bridge attachment conduit installation will involve mounting steel conduits along the bridge barrier, overhang, slab or underside of the structure per the Caltrans bridge standard detail sheets. Steel plates would be used to maintain traffic flow on all driveways. During non-working hours, contractors would fill or cover all open pits or trenches. Work also includes placement of temporary traffic control devices and signage as well as installation of eighteen, 30” wide by 48” long by 24” deep vault. Fiber optic markers will also be installed at the vault location as well as approximately every 500 feet along the conduit path, with metallic disk markers installed in the pavement. All work is to take place within the Caltrans ROW.
Contact Information
Name
Sarah K. Wright
Agency Name
California Department of Transportation, District 4
Job Title
Senior Environmental Scientist Specialist
Contact Types
Lead/Public Agency
Address
Phone
Email
Location
Cities
Sausalito
Counties
Marin, Sonoma
Regions
Northern California, San Francisco Bay Area
State Highways
SR-116, SR-1
Notice of Exemption
Exempt Status
Statutory Exemption
Type, Section or Code
PRC 21080.51
Reasons for Exemption
Middle mile broadband initiative (MMBI) projects that are either installed underground or placed aerially along an existing pole in the right-of-way are exempt, under Senate Bill 156, which added section 21080.51 to the PRC.
Attachments
Notice of Exemption
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