3B Presentation 2016 0906 - Laserfiche WebLink

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File Number: 16-400 enough data points to create a specific lifecycle curve for each road and can run queries in the database to predict the condition of the roads. Street Saver calculates that the cost to repair all roads in the City with PCI below 70 is around $100M. Street Saver also calculates that on an annual basis, $7.5M is necessary to maintain our road system in its current state. FY 16-17 ACTC Street Maintenance funding consists of the following: Measure B and BB Local Streets and Roads $2.5M Vehicle Registration Fees and Gas Tax $1.0M San Leandro has appropriated the following for street repair in FY16-17: General Fund (due in part to measure HH)$1.0M San Leandro has a grant for street repair in FY 16-17: Grant funding from Measure BB:$3.0M Total for FY 16-17 $7.5M In addition to the $3.0M grant this year, Measure BB grant funding is programed at $6.0M for FY 17-18 and $7.0M for each of the three years following that for a total of $30M over five years (FY 16-17 through FY 20-21). Assuming that all other funding sources keep up with inflation, this grant will allow the City to reduce its street maintenance backlog by around $15M. Without the Measure BB grant, the funding listed above is would not be sufficient to prevent the street maintenance backlog from increasing. Street repair is accomplished via four ways: 1.For streets in relatively good condition, with a PCI of 70 and above, the street’s life can be extended by applying a slurry seal. Slurry seal is a 1/8” thick mixture of oil and sand and is the lowest cost treatment method at around $3.50/square yard. 2.Streets in fair condition, with a PCI above 50, can be repaired with a cape seal. Cape seal is a mixture of recycled rubber, oil, and rock chips, with a top layer of oil and sand. Cape seals are about ½” thick and the cost ranges from $8 to $46/square yard, depending on the amount of pothole repair necessary. 3.Streets in poor condition, with a PCI of 25 and above, can be repaired by milling or grinding off the top layer of pavement and installing 3 to 4 inches of new pavement. A “mill and fill”, or overlay project, such as this costs $65/square yard. 4.Streets that have reached the end of their useful life must be replaced. Typically cement is mixed into the soils below the road after which a new pavement section is installed. Thickness of the pavement varies with the volume of car and truck traffic from 4 to 8 inches. This kind of reconstruction or rehabilitation is $75 to $90/square yard depending on the thickness of pavement required. The Street Saver program is used to calculate the most beneficial use of the City’s maintenance funds. In general, it is most economical to repair streets at the low end of each repair category to prevent as many streets as possible from slipping into the next, more expensive, repair category. The exact distribution of funds among the four repair types of work depends on the total funds available, the number of streets that are approaching the cut off for each repair type, and the shape of the lifecycle curve for each street. While Street Saver is useful for calculating how maintenance money should be spent, it isn’t robust enough to accurately choose the street segments that should be repaired. Staff must Page 2 City of San Leandro Printed on 8/29/2016