Merchants Park Sewer Extension Town of Avon 70% Design Opinion of Probrable Construction Cost Item No.
Description
Unit of Measure
Unit Cost
Quantity
Total Cost
EA EA VF EA VF EA LF LF EA LS Allowance Allowance EA EA EA LF LF LF
$ 10,500.00 $ 11,500.00 $ 135.00 $ 1,200.00 $ 375.00 $ 50,000.00 $ 225.00 $ 250.00 $ 2,000.00 $ 1,500,000.00 $ 15,000.00 $ 20,000.00 $ 1,500.00 $ 8,000.00 $ 550.00 $ 150.00 $ 100.00 $ 135.00
20 1 195 21 4 1 430 3,230 12 1 1 1 2 1 1 12 15 25
$210,000 $11,500 $26,303 $25,200 $1,313 $50,000 $96,750 $807,485 $24,000 $1,500,000 $15,000 $20,000 $3,000 $8,000 $550 $1,800 $1,500 $3,375 $2,805,776
LF LS EA EA
$ $ $ $
175.00 20,000.00 15,000.00 6,000.00
2,275 1 1 1
$398,125 $20,000 $15,000 $6,000 $439,125
CY CY CY CY CY CY LS EA LS
$ $ $ $ $ $ $ $ $
35.00 22.00 12.00 100.00 20.00 200.00 150,000.00 3,000.00 75,000.00
955 1,750 8,000 100 250 6,805 1 10 1
$33,425 $38,500 $96,000 $10,000 $5,000 $1,361,000 $150,000 $30,000 $75,000 $1,798,925
$ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $
300.00 25.00 350.00 2,000.00 1,500.00 50,000.00 125,000.00 20,000.00 40.00 55.00 500.00 295.00 12.00 225.00 187.00 200.00 187.00 200.00 205.00 125.00 30,000.00 200.00
40 1,280 1 3 3 1 1 1 440 389 3 1,080 4,010 640 28 37 60 80 125 340 1 10
$12,000 $32,000 $350 $6,000 $4,500 $50,000 $125,000 $20,000 $17,600 $21,417 $1,500 $318,600 $48,120 $144,000 $5,250 $7,486 $11,220 $16,000 $25,625 $42,500 $30,000 $2,000 $941,167
$ $
75,000.00 302,999.67
1 1
$75,000 $303,000 $378,000
$ $
85.00 30.00
$
$
Gravity Sewer Main Costs 1A 1B 1C 1D 1E 1F 2A 2B 3 4 5 6 7A 7B 7C 8A 8B 8C
SEWER MANHOLE BASE (4 FT DIA.) SEWER MANHOLE BASE (5 FT DIA.) SANITARY SEWER MANHOLE WALLS AND CONE (4FT AND 5FT DIA) SEWER MANHOLE FRAME AND COVER SEWER MANHOLE INSIDE DROP SEWER MANHOLE METER 6" PVC SDR 35 SEWER SERVICE 8" PVC SDR 35 GRAVITY SEWER PIPE (All Depths) SERVICE CONNECTION TEE/WYE GRANT DRIVE PUMP STATION* ELECTRICAL AND GAS ALLOWANCE OVERHEAD WIRING REMOVE DRAINAGE STRUCTURE 4' CATCH BASIN WITH SUMP ADJUST CATCH BASIN FRAME AND GRATE 12" RCP DRAIN PIPE REMOVE DRAIN PIPE MINOR DRAIN LATERAL REPAIR
9 10 11 12
4" DUCTILE IRON PIPE AND FITTINGS FORCE MAIN AIR RELEASE VALVE STRUCTURE FORCE MAIN CLEAN OUT STRUCTURE CORE INTO EXISTING SEWER MANHOLE
13A 13B 13C 14 15 16 17 18 19
GRAVEL BORROW SCREENED GRAVEL COMMON FILL MISC. CONCRETE EXCAVATION BELOW NORMAL GRADE ROCK AND BOULDER EXCAVATION SEWER CULVERT CROSSING TEST PITS DEWATERING AND DRAINAGE
Subtotal Force Main Sewer Costs
Subtotal Excavation Costs
20A 20B 21A 21B 21C 22 23 24 25A 25B 26 27A 27B 27C 28A 28B 28C 28D 28E 29 30 31
32 33
Subtotal Site Restoration Costs RESTORE ASPHALT SIDEWALK AND CROSSWALKS SY LOAM AND SEED SY TREE PROTECTION EA TREE/LANDSCAPING RESTORATION EA TREE REMOVAL EA EROSION AND SEDIMENTATION CONTROLS LS TRAFFIC MANAGEMENT AND CONTROLS LS ASPHALT, DIESEL, AND GASOLINE ADJUSTMENT ALLOWANCE Allowance REMOVE AND REPLACE ASPHALT CURBING LF REMOVE AND RESET GRANITE CURBING LF REMOVE AND RESET STREET SIGNS EA TEMP PAVING - 6" DEPTH (Town Roadways) TON FINAL PAVING - 3" MILL AND COLD PLANE (All Roadways) SY FINAL PAVING - 3" DEPTH (Town Roadways) TON TEMP PAVING - SUPPERPAVE SURFACE COURSE 12.5 MM (MassDOT Roadway) TON TEMP PAVING - SUPERPAVE INTERMEDIATE COURSE - 19 MM (MassDOT Roadway) TON SUPPERPAVE SURFACE COURSE 12.5 MM (MassDOT Roadway) TON SUPERPAVE INTERMEDIATE COURSE - 19 MM (MassDOT Roadway) TON SUPERPAVE BASE COURSE - 37.5 MM (MassDOT Roadway) TON CONTROLLED DENSITY FILL (Excavatable) CY PAVEMENT MARKING RESTORATION LS REMOVE AND RESET GUARDRAIL LF Subtotal Miscellaneous MISC. WORK + CLEANUP LS MOBILIZATION-5% OF SUBTOTAL BID LS Subtotal Subtotal Construction Cost Estimate Subtotal Police Detail Allowance Police Detail Allowance HR Cruiser HR Subtotal Construction Contingency Construction Contingency (10%) LS Subtotal Construction Administration and Resident Engineering Construction Administration and Resident Engineering LS Subtotal
$6,362,993 2,575 40
$218,875 $1,200 $218,875
636,299.30
1
$636,299 $636,299
763,559.16
1
Base Bid Estimate (Including Police) (Rounded) Base Bid Estimate + 10% Contingency (Rounded) Base Bid Estimate + 10% Contingency + Con Admin (Rounded) Date: 7/23/26
Prepared By: LDH
$763,559 $763,559
$6,582,000 $7,219,000 $7,983,000
Checked By: MTD
Notes: 1) Construction cost estimate based on a compilation of recent bid tabulations for similar projects in Massachusetts within the last three years. 2) Pump Station estimate includes anticipated costs for pre-fabricated package pump station, wet well, valve vault, generator, electrical instrumentaiton and controls, building, and all else related to the pump station. Discrete items for the pump station and anticipated costs will be added as design progresses. 3) Construction prices are valid until December 31, 2026.
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