Arroyo Grande lays out 10-year sidewalk program after citywide survey, inventory

Arroyo Grande city engineers told the City Council on Aug. 26 that a yearlong inventory of the city’s sidewalks found about 2,200 displacements across roughly 89 miles of walking surfaces and that the city should budget about $500,000 a year for repairs over the next decade.

City Engineer Shannon Sweeney said the inventory classified displacement severity and separated sidewalk gaps identified in the city’s Active Transportation Plan (ATP) so staff could prioritize repairs and combine fixes with larger projects. “We defined anything that was greater than half an inch as a problem,” Sweeney said.

The nut graf: the presentation provides a technical and financial roadmap the council can use to address tripping hazards, fill sidewalk gaps and change street‑tree policy to limit future root damage. Staff recommended folding many repairs into already funded efforts including the Halcyon Complete Streets and the Highway Safety Improvement Program (HSIP) rather than treating every location as a standalone repair.

Sweeney gave specifics: the city averages about $165,000 a year recently on sidewalk work but anticipates needing about $500,000 annually to keep up with identified needs; staff estimated repairs at roughly $35 per square foot. About 179 repairs have been completed so far and roughly 100 of the roughly 300 spot repairs identified have been finished, she said. Large displacements are relatively rare — the inventory found 13 locations with more than 4 inches of displacement, three of which will be addressed as part of the Halcyon Complete Streets project.

The presentation flagged trees as a major cause of damage. “Trees are the cause of about 1 in 3 of our problems,” Sweeney said, and staff reviewed the city’s street‑tree list against guidance from Cal Poly’s Urban Forest Ecosystems Institute to recommend roughly 30 tree species better suited for planting adjacent to sidewalks. The council asked staff to bring a shortened, updated street‑tree list back to council more quickly as an interim cleanup of the public guidance while the broader engineering standards are updated.

Staff described how the council’s passage of sales‑tax Measure E24 will help the program: Sweeney said Measure E24 added an estimated $6 million of general fund revenue and that the city’s 10‑year capital improvement program now includes the $500,000 annual sidewalk allocation. Several gap locations already are folded into planned projects: Elm and Sunset (an ATP gap) will be incorporated into the HSIP pavement and crosswalk work; portions of North Halcyon and adjacent streets will be included in Halcyon Complete Streets.

Council members pressed on implementation details: Council Member Lowe asked how residential cases differ from commercial ones; Sweeney described a “nuanced approach” for single‑family homeowners in which staff seeks to limit the financial burden on a single homeowner by combining repairs into larger projects when a private tree is the cause. The council also discussed right‑of‑way constraints on some gaps, which may require property‑dedication conversations.

Staff outlined next steps: prioritize repairs by displacement severity (worst first), finish updates to the engineering standards to incorporate the revised street‑tree list, fold ATP sidewalk gaps into projects where possible, and review the sidewalk inventory again in five years. The city will require replacement trees from the approved list when private property owners remove a tree that caused sidewalk damage; replacement trees are typically 15‑gallon stock, staff said.

The council did not take a formal vote on the program at the meeting; members provided direction for staff to bring back an updated street‑tree list and to advance the sidewalk program as described.