Agenda - Council - 12/14/2021 - Laserfiche WebLink

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•Adjustment made on the east side of street o Current layout offsets to the east,which would line up better o Maintain existing curb and gutter on one side (proposed on west side)to reduce project costs •Extend driveways and boulevard approximately 12' on one side of street(proposed on east side) o Must move existing storm sewer to align with new curb line o Significant cost increase •Extensive impact to residents on one side of the street(proposed on east side) •Access to driveways on one side of street cannot maintained throughout much of construction •Extensive impacts to landscaping, irrigation systems, etc. on one side of street(irrigation repairs are typically the property owners responsibility) •Properties on one side of street will be impact6ed differently than properties on other side of street post construction •Increase in Staff design time (estimated at 40 hours) o Need to design new vertical profile for street and curb line, and match into existing driveways on one side of Waco Street(proposed on east side) o Need to re-design storm sewer system. o Additional plan sheets; street profiles, cross sections, storm sewer, etc. o Additional field time for staking new curb line, storm sewer, etc. •Future pavement maintenance reduced o One less pass for plows during snow plow events (2 passes versus 3) o Less square yards of pavement during pavement treatments (approx. 900 SY) •Pavement rejuvenator, crack sealing, overlaying,patching, etc. •Continuity of neighborhood appearance o Reduced street width would be more consistent with Waco Street to the South o Current width does match Sunwood Drive to the West. •Off street pedestrian facilities o Extended boulevard creates opportunity for off-street pedestrian trail on one side (east proposed) between Sunwood Drive and 150th Avenue Estimated Cost Summary Estimated costs are based off detailed AutoCAD drawings and line item estimates. Item unit prices are based off of anticipated 2022 pay items,which Staff are estimating to be 5-percent higher than average 2021 rates. It should be noted that Staff proposed to reduce the width of Waco Street on the east side, saving the curb and gutter on the west side. If it was desired to center Waco Street within the right of way, it would add approximately $3500 - $40,000 to project costs. Exhibits showing the options are attached to this case. A table summarizing the estimated costs is below. Summary of Estimated Costs Waco Street Option 1 Waco Street Option 2 Sunwood Drive Maintain Existing 46' Width Reduce Width from 46' to 34' Waco Street Total Project Waco Street Total Project Total Construction Cost $299373.23 '$ 160,366.23 $459,539.46 $230,400.23 $529,573.46 I I 23%Indirect Cost $ 6809.84 $ 3604.23 $ 105,694.08 $ 52,992.05 $ 121,801.90 Total Project Cost '$367,983.07 $ 197,250.46 $565,233.54 $2839392.28 $651,375.36 Option 2 Additional Upfront Project Cost $ 86,141.82 Option 2 Life Cycle Saving(2022pricing) ($ 39,986.88) ) Option 2 Additional Project Cost Including Lie Cycle Savings 2022 pricing) $46,154.94 p J g f y g ( p g) Option 2 Life Cycle Savings (assumes 1.5%inflation over 60 year life) ($ 62,575.20) FO Option 2 Additional Project Cost Including Lie Cycle Savings assumes 1.5% inflation) $23 566.62 p J g f y g ( .� )