Mill Valley committee weighs $3M–$5M annual road program to erase $12M backlog

City staff and a pavement consultant told the committee that Mill Valley—aces a choice between steady maintenance and an upfront investment to eliminate a backlog of deteriorated streets.

Joe Ryrie of Pavement Engineering explained the life cycle of asphalt and the difference between light maintenance (slurry seals and crack sealing), heavier maintenance including chip seals, and full rehabilitation or reconstruction. "You're putting sunscreen on the pavement," Ryrie said of slurry seals, describing them as a protective, short‑lived treatment that extends service life but does not restore a street to new condition.

Staff walked the group through two cost scenarios. One chart assumed a prolonged maintenance mode, which the presenters said would require roughly $3.0 million per year to hold the system near its current average pavement condition index (PCI). A second chart showed a front‑loaded scenario that would spend about $5.2 million per year for five years to reduce backlog to near zero, after which annual maintenance would fall back toward $2.7M–$3.0M.

City staff cautioned the committee that the higher, front‑loaded option would demand more procurement and construction capacity and could disrupt traffic during concentrated work, but would speed elimination of the most deteriorated segments. Staff said the backlog of streets needing full reconstruction is roughly $12 million and that a $5M/year push could address that within the five‑year window.

The committee did not vote on funding; members asked staff to return with a refined report showing a combined recommended dollar amount, projected durations, and clearer distinctions between residential, collector and arterial costs. The next meeting was set for March 3; staff were asked to circulate materials in advance.