2009 - Illinois DNR - State of Illinois

Table 26: Alternative D5 - Combine Alternatives C2 and S8 Cost EstimateFarmer/Prairie CreekAlternative D5 Cost Estimate Aug 04Line Unit TotalItem Item Quantity Unit Price CostAlt. S8 Belleau Lake Alternative 1 Each $66,651 $66,65154213723 Precast Reinf. Conc. End 1 Each $3,000 $3,00054010504 60" Concrete Pipe 4200 Ft $255 $1,071,00060248000 Junction Chamber N1 1 Each $12,000 $12,00060221100 Manhole 9 Each $2,200 $19,80020800150 Trench Backfill (Road) 2178 CY $28 $60,97844000100 Pavement Removal 3267 SQ $6 $19,56744100100 Pavement Replacement 3267 SQ $75 $245,000FR-416,129 Tideflex for 54" x 36" RCP 1 Each $35,000 $35,000C2 Contingencies (15%) and Mobilization (6%) of subtotal $307,932Construction Cost $1,840,929Engineering (20%) and Construction Supervision (7.5%) $506,255Alts. C2, S8 Right-of-Way Cost* 749320 SQ $0 $0Total Project Cost $2,347,184Alternative Average Annual Cost (5.375% For 50 Years) $136,091O&M (1%) $18,409Alternative Average Annual Cost and O&M (1%) $154,500Baseline Average Annual Damages (Direct and Indirect) $144,531Alternative Average Annual Damages (Direct and Indirect) $85,164Alternative Average Annual Benefits $59,367Benefit Cost Ratio 0.38Frequency 1 2 5 10 25 50 100Existing Damaged Structures 0 1 2 11 38 64 96Alternative Damaged Structures 0 1 1 2 14 55 67Structures Removed from Floodplain 0 0 1 9 24 9 29* $0.00 Assessed value because of current public ownership.98