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Consultants present pavement-management plan; recommend Old Nashville Highway and Sand Hill Road work this year
Summary
Kimley Horn told the Board of Mayor and Aldermen the citywide pavement condition index is 71.5, recommended funding Old Nashville Highway and Sand Hill Road this fiscal year, and showed that keeping the current $900,000 annual budget would let the PCI slip to about 67.6 by 2029 while backlog grows from roughly $35 million to $42 million.
Rachel Robinson, a pavement consultant with Kimley Horn, presented the results of a pavement-management study for the City of La Verne at a Board of Mayor and Aldermen workshop on Feb. 27, 2025, and recommended that Old Nashville Highway and Sand Hill Road be funded for treatment in the 2024–25 fiscal year.
Kimley Horn’s analysis put La Verne’s current network pavement condition index, or PCI, at 71.5 on a 0–100 scale. Robinson said the firm used automated data collection, an industry-standard ASTM methodology, and its DRIVE database tool to model future scenarios under different budget levels.
Robinson said the primary objective of pavement management is to “make sure that our roads that are in good condition stay in good condition,” and argued preventive maintenance is cheaper than repairing roads after they reach a steep deterioration point. She described the firm’s automated data-collection vendor, ICC, which collects segment-level distress with lasers, cameras and other sensors while driving at regular speeds, then hands raw data to Kimley Horn for PCI scoring under ASTM standards.
On costs and scenarios, the presentation showed three scenarios: an unconstrained scenario (money-is-no-object), a maintain-condition scenario and a scenario based on the city’s current $900,000 annual pavement budget. Under the existing-budget scenario, Kimley Horn’s model projects the citywide PCI would decline from 71.5 in 2025 to about 67.58 by 2029 and the estimated backlog of needed work would rise from approximately $35,000,000 in 2025 to about $42,000,000 in 2029. Kimley Horn estimated that maintaining the current 71.5 PCI would require roughly $2,500,000 per year; the firm also showed an unconstrained 2025 need of about $35,000,000.
Robinson said the firm developed a multi-year work plan and that, working with Public Works staff, it identified Old Nashville Highway and Sand Hill Road as the priority treatment candidates for the coming fiscal year. Kimley Horn estimated the combined cost to reconstruct those segments—using a mix of three-inch mill-and-overlay and full-depth reconstruction where subbase failures exist—at about $1,400,000.
City staff and board members raised mapping questions after the presentation, noting some roads appeared as missing or grayed out in the DRIVE maps. Robinson and staff said the city will supply updated GIS shapefiles to Kimley Horn and that the map cleanup is the city’s responsibility; the DRIVE system is a living tool that can be updated annually. Staff also confirmed re-surveys of the network are typically recommended every three to five years.
The presentation included technical clarifications about treatment selection, the cost consequences of deferred maintenance, and the region- and material-dependent nature of the available treatment “toolbox.” Robinson said DRIVE lets staff model different budget and performance priorities and edit the suggested work list before finalizing a multi-year plan.
Next steps described in the workshop: staff will follow up with Kimley Horn to correct GIS coverage gaps, incorporate DRIVE scenarios into the capital-improvement planning process, and bring budget recommendations to the board for annual decision-making. Staff indicated the board could change the annual budget (for example, increase it above $900,000) and then use DRIVE to see how that allocation alters the recommended list of projects.
