Discussion and Review of Potential Funding Opportunities through the IDOT for Trail and Pedestrian Tunnel Improvements — Hwy 6 Ped Underpass Options & Cost Estimate

ENGINEER'S OPINION OF PROBABLE COSTS 10' Pedestrian Trail Options & Pedestrian Underpass, US 6 Tall Grass Avenue to Roberts Ferry Road Tiffin, IA DATE: 1/17/2025 Estimate Year 2025 MSA PROJECT #: 13603026 Construction Year 2026 Option 1 Option 2 Option 3 Option 4 Option 5 Option 6 Project Total 125' of proposed Trail from 1500' of proposed Trail 700' of proposed Trail from 1000' of proposed Trail 600' of proposed Trail Underpass Work Culvert, south, to existing from Culvert, west, to Tall Culvert, north, to Redbird from Culvert, east, to from Croell Avenue to N. trail Grass Avenue Run Roberts Ferry Road Kimberlite Street ITEM DESCRIPTION UNIT UNIT PRICE QUANTITY COST QUANTITY COST QUANTITY COST QUANTITY COST QUANTITY COST QUANTITY COST QUANTITY TOTAL PRICE NO. 1 Clearing & Grubbing LS $ 6,000.00 - $ - - $ - 0.40 $ 2,400 0.20 $ 1,200 0.30 $ 1,800 0.10 $ 600 1 $ 6,000 2 Fill, Contractor Furnished CY $ 13.00 - $ - - $ - 1,182 $ 15,400 - $ - - $ - - $ - 1,182 $ 15,400 3 Excavation CY $ 5.00 2,850 $ 14,300 46 $ 300 717 $ 3,600 246 $ 1,300 1,025 $ 5,200 355 $ 1,800 5,239 $ 26,500 4 PCC Overlay inside underpass (ADA Compliance) SY $ 60.00 210 $ 12,600 - $ - - $ - - $ - - $ - - $ - 210 $ 12,600 5 PCC Endwalls with Pipe Railing at top EA $ 52,000.00 2 $ 104,000 - $ - - $ - - $ - - $ - - $ - 2 $ 104,000 6 Storm Sewer for Pedestrian Underpass (based on Oct. 2008 design) LS $ 31,000.00 1 $ 31,000 - $ - - $ - - $ - - $ - - $ - 1 $ 31,000 7 Drainage (Minor Storm Piping) LF $ 150.00 - $ - 30 $ 4,500 200 $ 30,000 45 $ 6,800 60 $ 9,000 100 $ 15,000 435 $ 65,300 8 Guardrail LF $ 28.00 200 $ 5,600 - $ - - $ - - $ - - $ - - $ - 200 $ 5,600 9 Anti-Graffiti Coating LS $ 12,000.00 1 $ 12,000 - $ - - $ - - $ - - $ - - $ - 1 $ 12,000 10 Underpass Lighting System LS $ 35,000.00 1 $ 35,000 - $ - - $ - $ - - $ - - $ - 1 $ 35,000 11 Pedestrian Hand Rail LF $ 210.00 475 $ 99,800 - $ - - $ - - $ - - $ - - $ - 475 $ 99,800 12 Modular Block Retaining Wall (Assume a ~3'-4' wall height average) SF $ 45.00 - $ - - $ - 6,000 $ 270,000 - $ - 5,000 $ 225,000 2,400 $ 108,000 13,400 $ 603,000 13 Poured Concrete Retaining Wall (Assume an 8' 6" max height) CY $ 900.00 49 $ 44,100 - $ - - $ - - $ - - - 49 $ 44,100 14 PCC Trail, 10' Wide, 6" Thickness SY $ 49.00 222 $ 10,889 139 $ 6,900 1,667 $ 81,700 778 $ 38,200 1,111 $ 54,500 667 $ 32,700 4,583 $ 224,889 15 PCC Trail Aggregate Base & Subbgrade Prep, 4" Thickness SY $ 10.00 - $ - 167 $ 1,700 2,000 $ 20,000 933 $ 9,400 1,333 $ 13,400 800 $ 8,000 5,233 $ 52,500 16 Construction Survey (1%) LS 1% $ 4,000 $ 1,000 $ 5,000 $ 1,000 $ 4,000 $ 2,000 1 $ 17,000 17 Traffic Control (3%) LS 2% $ 8,000 $ 1,000 $ 9,000 $ 2,000 $ 7,000 $ 4,000 1 $ 31,000 18 Mobilization (8%) LS 8% $ 31,000 $ 2,000 $ 35,000 $ 5,000 $ 26,000 $ 14,000 1 $ 113,000 ESTIMATED CONSTRUCTION SUBTOTAL $ 412,289 $ 17,400 $ 472,100 $ 64,900 $ 345,900 $ 186,100 $ 1,498,689 Contingency 20% $ 82,500 $ 3,500 $ 94,500 $ 13,000 $ 69,200 $ 37,300 $ 300,000 Inflation 5% per year $ 24,800 $ 1,100 $ 28,400 $ 3,900 $ 20,800 $ 11,200 $ 90,200 ESTIMATED CONSTRUCTION COST (2026) $ 519,589 $ 22,000 $ 595,000 $ 81,800 $ 435,900 $ 234,600 $ 1,888,889 Estimated Grant/Loan Administration $ - $ - $ - $ - $ - $ - $ - Estimated Legal Fees $ - $ - $ - $ - $ - $ - $ - Estimated Property Acquisition $ - $ - $ - $ - $ - $ - $ - Estimated Design Engineering 10% $ 52,000 $ 2,200 $ 59,500 $ 8,200 $ 43,600 $ 23,500 $ 189,000 Estimated Construction Engineering 10% $ 52,000 $ 2,200 $ 59,500 $ 8,200 $ 43,600 $ 23,500 $ 189,000 TOTAL ESTIMATED PROJECT COST: $ 624,000 $ 27,000 $ 714,000 $ 99,000 $ 524,000 $ 282,000 $ 2,267,000 Disclaimers & Assumptions 1 This opinion of probable cost is approximate. Actual construction bids may vary significantly from this opinion due to timing of bids, constructual schedule restraints, labor rate increases, material increases, or other factors beyond the control of the engineer. 2 Easements are estimations only. Compensation will be adjusted as needed during negotiations. 3 No street lighting or private utility relocation costs included. 4 Existing Culvert is 12' Wide, 8' Tall, 75' long 5 Proposed End Section and Headawall will be 41' long on each side 6 Total length is 157' G:\13\13603\! City of Tiffin\Cost Estimates\2024.11.07 - 10' Pedestrian Trail Options, US 6\2025-01-17 - Revised Estimate\Copy of Preliminary Construction Cost Estimate_2024 (002) REVISED.xlsm Completed By: