Lifecycle Planning
Figure 02-16: Lifecycle Planning for Cost Efficiency
Figure 02-16 demonstrates how strategic maintenance can preserve infrastructure condition and extend service life. When maintenance is planned and conducted at key intervals, the infrastructure remains in better condition over time, reducing the frequency and cost of large- scale repairs. The graph shows two scenarios: • No Planned Maintenance (yellow line): Infrastructure without proactive maintenance requires costly reconstruction at frequent intervals, leading to a Pavement Condition Index (PCI) decline below 70 in just 11 years and total costs of approximately $1.9 million (per lane mile) over 40 years. • Planned Maintenance (blue line): Proactive measures, such as crack sealing, surface sealing, and mill and overlay, reduce the need for major repairs, allowing the PCI to remain above 70 for a longer period. Planned maintenance reduces the 40-year cost to $1.13 million, extending the infrastructure’s life to 59 years. The table below the graph breaks down the cost differences between planned and unplanned maintenance: • Construction Cost : Both scenarios begin with a new construction cost of $957,000. • Maintenance Cost : Planned maintenance incurs an additional $177,000 in periodic maintenance expenses but prevents costly full reconstruction needs. • 40-Year Cost: Planned maintenance results in a total 40-year cost of $1.134 million, a significant reduction compared to $1.914 million for unplanned maintenance. • Service Life and Condition : With planned maintenance, the infra- structure remains in good condition (PCI above 70) for 4 years, compared to only 11 years without planned interventions. The total lifespan increases from 28 years to 59 years.
Data Source: City of Fort Worth, Work Session on Street Maintenance Funding
MOVING A MILLION | STATE OF THE SYSTEM REPORT
29
Made with FlippingBook - professional solution for displaying marketing and sales documents online