Scope: Construction of a roundabout at entrance to Derryfield School at River Rd/Bicentennial Rd intersection Addendum 1

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Information Report
MANCHESTER
42886
X-A004(986)
County: HILLSBOROUGH
Date Bids Open: 11/12/2026
Scope of Work: Construct a roundabout at entrance of Derryfield School at River Rd/Bicentennial
Rd intersection
Location: River Rd/Bicentennial Dr
Completion Date: 5/19/2028
Proposal Guarantee: 5% of bid amount
Item Item Estimated
Number Description Unit Quantity
MANCHESTER 42886
Roundabout
201.1 CLEARING AND GRUBBING (F) A 0.10
201.21 REMOVING SMALL TREES EA 3.00
202.41 REMOVAL OF EXISTING PIPE 0-24" DIAMETER LF 540.00
202.5 REMOVAL OF CATCH BASINS, DROP INLETS, AND EA 4.00
MANHOLES
202.6 CURB REMOVAL FOR SALVAGE LF 1,300.00
202.7 REMOVAL OF GUARDRAIL LF 150.00
202.8 REMOVAL OF FENCE LF 90.00
202.843 REMOVAL OF LIGHT POLE U 2.00
202.851 REMOVAL OF FLASHING BEACON U 1.00
203.1 COMMON EXCAVATION CY 3,950.00
203.2 ROCK EXCAVATION CY 25.00
203.6 EMBANKMENT-IN-PLACE (F) CY 1,450.00
206.19 COMMON STRUCTURE EXCAVATION EXPLORATORY CY 100.00
206.2 ROCK STRUCTURE EXCAVATION CY 200.00
214. FINE GRADING U 1.00
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304.4 CRUSHED STONE (FINE GRADATION) (F) CY 1,870.00
304.45 CRUSHED STONE (FINE GRADATION) FOR DRIVES CY 30.00
304.5 CRUSHED STONE (COARSE GRADATION) (F) CY 2,140.00
304.81 POROUS MEDIA CHOKER COURSE CY 10.00
304.87 INFILTRATION STONE CY 30.00
304.881 INFILTRATION MEDIA - AMENDED SAND COURSE CY 55.00
403.11023 HBP-3/4" BINDER MIX, MACHINE METHOD TON 1,290.00
403.11043 HBP-1/2" SURFACE MIX, MACHINE METHOD TON 210.00
403.11943 HBP-1/2" SURFACE MIX, MACHINE METHOD, HIGH TON 380.00
STRENGTH
403.12 HBP-HAND METHOD TON 30.00
403.16 PAVEMENT JOINT ADHESIVE LF 2,050.00
403.19 HBP-TEMPORARY TON 100.00
410.22 ASPHALT EMULSION FOR TACK COAT GAL 490.00
417. COLD PLANING BITUMINOUS SURFACES SY 1,315.00
520.1 CONCRETE CLASS A CY 5.00
544.1 REINFORCING STEEL (ROADWAY) LB 40.00
585.3 STONE FILL, CLASS C CY 5.00
593.411 GEOTEXTILE; PERM CONTROL CL.1, NON-WOVEN SY 60.00
593.521 PVC GEOMEMBRANE LINER (40 MIL) SY 140.00
603.0001 VIDEO INSPECTION LF 885.00
603.00312 12" R.C. PIPE, 3000D LF 320.00
603.00318 18" R.C. PIPE, 3000D LF 120.00
603.00324 24" R.C. PIPE, 3000D LF 340.00
603.00330 30" R.C. PIPE, 3000D LF 25.00
603.30112 12" R.C. END SECTIONS EA 2.00
604.0007 POLYETHYLENE LINER EA 11.00
604.124 CATCH BASINS TYPE B, 4-FOOT DIAMETER U 11.00
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604.324 DRAINAGE MANHOLES, 4-FOOT DIAMETER U 2.00
604.325 DRAINAGE MANHOLES, 5-FOOT DIAMETER U 2.00
604.4 RECONSTRUCTING/ADJUSTING CATCH BASIN & DROP LF 10.00
INLET
604.51 RECONSTRUCTING/ADJUSTING SEWER MANHOLES LF 7.00
604.9101 OUTLET CONTROL STRUCTURE U 1.00
605.506 6" PERF. CORR. POLYETHYLENE PIPE UNDERDRAIN LF 80.00
607.98 RESET MISCELLANEOUS FENCE LF 210.00
608.13 3" BITUMINOUS SIDEWALK (F) SY 730.00
608.36 6" REINFORCED CONCRETE SIDEWALK (F) SY 200.00
608.461 GRANITE COBBLES SY 350.00
608.466 2-3/8" CONCRETE PAVERS SY 200.00
608.54 DETECTABLE WARNING DEVICES, CAST IRON SY 40.00
609.01 STRAIGHT GRANITE CURB LF 2,385.00
609.01123 STRAIGHT GRANITE CURB, 12" HIGH WITH 3" X 3" LF 250.00
MOUNTABLE BEVELED EDGE
609.01187 STRAIGHT GRANITE CURB, 18" HIGH WITH 3" LF 360.00
ROUNDED EDGE
609.02 CURVED GRANITE CURB LF 200.00
609.924 SPECIAL STRAIGHT GRANITE CURB (REVEAL UP TO LF 115.00
12")
611.90001 ADJUSTING WATER GATES AND SHUTOFFS SET BY EA 3.00
OTHERS
614.74118 4" PVC CONDUIT, SCHEDULE 80 LF 820.00
615.03 TRAFFIC SIGN TYPE C SF 170.00
615.033 REMOVING TRAFFIC SIGN, TYPE C U 6.00
615.034 RELOCATING TRAFFIC SIGN, TYPE C U 4.00
615.05 TRAFFIC SIGN TYPE BB SF 10.00
615.06 TRAFFIC SIGN TYPE CC SF 65.00
618.61 UNIFORMED OFFICERS WITH VEHICLE $ 76,500.00
618.7 FLAGGERS HR 3,800.00
619.1 MAINTENANCE OF TRAFFIC U 1.00
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619.25 PORTABLE CHANGEABLE MESSAGE SIGN U 99.00
625.1 CONCRETE LIGHT POLE BASES, TYPE A EA 11.00
625.53130 LIGHT POLE WITH LED LUMINAIRE (30' TALL, SINGLE EA 3.00
HEAD)
625.54118 ORNAMENTAL LIGHT POLE (18') EA 11.00
628.2 SAWED BITUMINOUS PAVEMENT LF 790.00
632.0104 RETROREFLECTIVE PAINT PAVE. MARKING, 4" LINE LF 7,750.00
632.3108 RETROREFLECT. THERMOPLAS. PAVE. MARKING, 8" LF 410.00
LINE
632.3112 RETROREFLECT. THERMOPLAS. PAVE. MARKING, 12" LF 910.00
LINE
632.32 RETROREFLECT. THERMOPLAS. PAVEMENT MARKING, SF 25.00
SYMBOL OR WORD
634. BOULDERS FOR BARRICADE EA 20.00
645.512 COMPOST SOCK FOR PERIMETER BERM LF 2,000.00
645.7 STORM WATER POLLUTION PREVENTION PLAN U 1.00
645.71 WATER QUALITY MONITORING, INSPECTION AND HR 200.00
REPORTING
646.512 TURF ESTABLISHMENT WITH MULCH, TACKIFIERS AND SY 3,200.00
LOAM (F)
650.2 LANDSCAPING U 1.00
665.1 OUTDOOR LIGHTING SYSTEM U 1.00
670.615 RELOCATE PRIVATE SIGN U 1.00
692. MOBILIZATION U 1.00
698.13 FIELD OFFICE TYPE C MON 8.00
699. MISCELLANEOUS TEMPORARY EROSION AND $ 10,000.00
SEDIMENT CONTROL
1008.251 ALTERATIONS AND ADDITIONS AS NEEDED - $ 5,000.00
TEMPORARY PEDESTRIAN ACCOMMODATIONS
1010.15 FUEL ADJUSTMENT $ 40,000.00
1010.2 ASPHALT CEMENT ADJUSTMENT $ 10,000.00
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