State broadband plan: Caltrans/CDT propose middle‑mile fiber along Topanga Canyon Boulevard with night work and minimal surface impact

State broadband partners presented an overview of the Middle Mile Broadband Network (MMBN) project planned along Topanga Canyon Boulevard.

Akim (California Department of Technology partner) said the 12.4‑mile Topanga segment is designed to run fiber under existing pavement to minimize disturbance outside the roadway prism and that construction would be performed at night with at least one lane open to avoid daytime closures. Noise studies predict construction noise varying from roughly 62 to 88 decibels at certain distances and the project team said the work will be a moving operation rather than stationary noise concentrated at a single location.

Caltrans staff asked residents with technical questions to use project contact channels and said information and contact details would be posted in the meeting chat. The county noted questions about extending broadband to Old Topanga or county roads should be directed to county public works representatives.