RFP #2324-17 Replacement of Industrial Ave. Bridge (No. 025030) over Unnamed Stream Addendum 3

Agency:	Town of Cheshire
State:	Connecticut
Type of Government:	State & Local
NAICS Category:	237310 - Highway, Street, and Bridge Construction
Posted Date:	Feb 23, 2024
Due Date:	Feb 29, 2024
Solicitation No:	RFP #2324-17
Bid Source:	Please Login to View Page
Contact information:	Please Login to View Page
Bid Documents:	Please Login to View Page

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SLR International Corporation

99 Realty Drive, Cheshire, Connecticut, 06410

ADDENDUM NO. 3.0

REPLACEMENT OF INDUSTRIAL AVENUE BRIDGE (NO. 025030) OVER UNNAMED

STREAM PROJECT

Cheshire, Connecticut

SLR #141.11047.00059

Original Bid Package Issued January 30, 2024

Addendum No. 1 Issued February 8, 2024

Addendum No. 2 Issued February 12, 2024

Addendum No. 3 Issued February 23, 2024

This Addendum No. 3 includes clarifications and modifications to the above-referenced bid

package. Changes reflected herein shall supersede all previous bid package documentation.

A. REVISIONS TO CONTRACT DOCUMENTS

The following modifications to the bid documents shall be made part of the official bid package

and supersede any previous documentation. Revised sections have been attached herein:

 Revised Plan Sheet – STR-01 dated February 23, 2024

 Revised Plan Sheet – STR-03 dated February 23, 2024

 Revised Plan Sheet – STR-05 dated February 23, 2024

B. RESPONSE TO BIDDER QUESTIONS

Q1. ITEM #1401257A – WATER MAIN SUPPORT BRACKETS: The item is paid for as a

lump sum item, but we cannot locate a quantity or spacing on the plans to allow

us to price this item as a lump sum item, can you tell me the quantity of these

supports that are required?

R1. See revised sheet 12, STR-03, downstream parapet detail.

Q2. What is the state-funded portion of the project?

R2. 50% of the total bid is state funded.

Q3. Based on the response to question 1 in Addendum 2, please verify the left in place

sheeting that is shown cutoff at the top of the footings on the “Typical Section at

Culvert” detail on contract drawing 02 is not required. If it is required, please

provide the minimum elevation of the bottom of the sheet.

R3. If the contractor chooses to use sheet piling as cofferdam and dewatering, then the

sheet piling material shall be left in place and cut at elevation 143.25’. If other methods

are used for cofferdam and dewatering the sheet piling is not required.

Q4. There is conflicting information in the contract documents on which version of the

Connecticut DOT Standard Specifications apply to the project – please clarify

which version will be used.

R4. The correct specifications are Connecticut Department of Transportation Form 818

(2020), supplemental specifications dated January 2023 and special provisions.

Q5. Please provide the elevations at the top of the wingwalls as well as the detail for

where the drainage pipes pass through the wingwall.

R5. See updated plan sheet STR-03.

Q6. Please verify no bid bond is required.

R6. The contractor’s Surety bid bond.

Q7. What is the anticipated award date of the project? The lead time for submittal and

approval of shop drawings and casting and delivery of the three-sided concrete

arch may be substantial.

R7. The town will award the project before March 29, 2024.

Q8. We are inquiring about a specific bid bond form for the Town of Cheshire-

Industrial Ave Bridge. Is there one that we are required to use? The bid package

for Industrial Ave Bridge does not have one. Is a general form from our Surety ok

to use for this bid? Please advise.

R8. The contractor’s Surety bid bond.

Q9. The south side of the bridge has 2ea Thrie Beam Bridge attachments, these

attachments are shown to have a radius. Thrie Beam Bridge attachments cannot

be bent per the manufacturer and FHWA guidelines. A radius panel can only be

installed at the end of the transition panel at post #10.

R9. See revised sheet STR-01 for updated Guiderail callouts. R-B350 Bridge Attachment

with curve has been designed for and constructed in a recent project. A curve radius has

been provided.

1'-9" HEADWALL (TYP.)

WINGWALL 1A

PRECAST CONCRETE THREE

SIDED RIGID FRAME

BEGIN STA. 11+01.36

1 R-B 350 BRIDGE ATTACHMENT

- VERTICAL SHAPED PARAPET

50.0' Upland Review

INV4.=8"14C5M.P7'

4I8N"VC.=M1P45.8'

50.0' Upland Review

2I4N"VR.=C1P49.6'

BRIDGE IDENTIFICATION PLACARD

WINGWALL 2A

GENERAL NOTES

1. SPECIFICATIONS: CONNECTICUT DEPARTMENT OF TRANSPORTATION FORM 818 (2020), SUPPLEMENTAL

SPECIFICATIONS DATED JANUARY 2023 AND SPECIAL PROVISIONS.

2. DESIGN SPECIFICATIONS: AASHTO LRFD DESIGN SPECIFICATIONS, 9TH EDITION, 2020, AS SUPPLEMENTED BY THE

CONNECTICUT DEPARTMENT OF TRANSPORTATION BRIDGE DESIGN MANUAL (2003) WITH INTERIM REVISIONS UP TO

AND INCLUDING 2019.

3. MATERIAL STRENGTHS:

CCB

T.G.=154.24

INV. OUT(E) = 149.41

INV1.=51" 4R6C.P8'

145.4

R-B 350 BRIDGE ATTACHMENT

- VERTICAL SHAPED PARAPET

SILT FENCE (TYP.)

CONCRETE:

CLASS PCC03340

CLASS PCC04460

CLASS PCC04462

f'c = 3,000 PSI

f'c = 4,000 PSI

Rip-Rap

R-B MASH

PRECAST CONCRETE PCC08061

f'c = 6,500 PSI

R-B MASH

Mon.

152

154

15" RCP

16'-0"

154

155

THE CONCRETE STRENGTH USED IN DESIGN (f'c) OF THE CONCRETE COMPONENTS IS NOTED ABOVE. THE

COMPRESSIVE STRENGTH OF THE CONCRETE IN THE CONSTRUCTED COMPONENTS SHALL CONFORM TO THE

REQUIREMENTS OF SECTION 6.01 - CONCRETE FOR STRUCTURES AND M.03 - PORTLAND CEMENT CONCRETE.

REINFORCEMENT:

155

ASTM A615 GRADE 60

fy = 60,000 PSI

155

11+00

SLR-2

15" RCP

SLR-1

END STA. 11+19.37

11°

REMOVAL OF EXISTING

CORRUGATED METAL PIPE CULVERT

MTIA.INFNNV.V=H..O1ION5L6U(ES.T5E(7)NW= )1=501.2540.24

12+00

4. LIVE LOAD: HL-93, LEGAL AND PERMIT VEHICLES

5. FUTURE PAVING ALLOWANCE: NONE

6. EXISTING DIMENSIONS: DIMENSIONS AND ELEVATIONS OF THE EXISTING STRUCTURE SHOWN ON THESE PLANS ARE

FOR GENERAL REFERENCE ONLY AND ARE NOT GUARANTEED. THE CONTRACTOR SHALL TAKE ALL FIELD

MEASUREMENTS NECESSARY TO ASSURE PROPER FIT OF THE FINISH WORK AND SHALL ASSUME FULL

RESPONSIBILITY FOR THEIR ACCURACY. WHEN SHOP DRAWINGS BASED ON FIELD MEASUREMENTS ARE SUBMITTED

FOR APPROVAL, THE FIELD MEASUREMENTS SHALL ALSO BE SUBMITTED FOR REFERENCE BY THE REVIEWER.

CONCRETE NOTES

1. REMAIN-IN-PLACE FORMS: THE USE OF REMAIN-IN-PLACE FORMS ON THIS STRUCTURE IS NOT ALLOWED.

NDUSTRIAL

1 R-B END ANCHORAGE

- TYPE II

155

CCB

T.G.=154.24

INV. IN(W) = 148.66

INV. OUT(SE) = 148.66

INV.=1154" 8R.C4P5'

Grass

INV4.=8"14C6M.P1'

4I8N"VC.=M1P46.3'

R-B 350 BRIDGE ATTACHMENT

- VERTICAL SHAPED PARAPET

WINGWALL 1B

BRIDGE IDENTIFICATION PLACARD

EROSION CONTROMPLeitpaeMl ATTING

HYDRAULIC DATA

DRAINAGE AREA

DESIGN FREQUENCY

DESIGN DISCHARGE

UPSTREAM DESIGN WATER SURFACE EL.

DOWNSTREAM DESIGN WATER SURFACE EL.

OVERTOPPING FREQUENCY

OVERTOPPING DISCHARGE

WORST CASE SCOUR SUB-STRUCTURE

MAXIMUM SCOUR ELEVATION

AVERAGE DAILY FLOW

AVERAGE SPRING FLOW

1.56 SQ. MI.

100-YR

752 CFS

152.43 FT

150.13 FT

500-YR

1000 CFS

WEST ABUTMENT

143.0 FT

6 CFS

3 CFS

PLAN

SCALE: 1" = 10'-0" W

CONCRETE DISTRIBUTION

DESCRIPTION

SUPERSTRUCTURE

SUBSTRUCTURE

FOOTINGS

TOTAL

UNIT

QTY

115

189

R-B 350 BRIDGE ATTACHMENT

- VERTICAL SHAPED PARAPET

R-B END ANCHORAGE

- TYPE II

ABUTMENT AND WINGWALL

FOOTING (TYP.)

WINGWALL 2B

ROUNDED RIPRAP WITH

TOPSOIL AND CONSERVATION

SEEDING FOR SLOPES (TYP.)

NOTICE TO BRIDGE INSPECTORS

The Department's Bridge Safety procedure require this bridge to be

inspected for, but not limited to, all appropriate components indicated in

the governing manuals for bridge inspection. Attention must be given to

inspecting the following special components and details. (The listing for

components for specific attention shall not be construed to reduce the

importance of inspection of any other component of the structure.) The

frequency of inspection of this structure shall be in accordance with the

governing manuals for bridge inspection, unless otherwise directed by the

Manager of Bridge Safety and Evaluation.

COMPONENT OR DETAIL BRIDGE SHEET REFERENCE

NONE

2. THE FOLLOWING PAY ITEMS AND CONCRETE CLASSES ARE REQUIRED FOR CAST-IN-PLACE BRIDGE COMPONENTS:

ITEM

BRIDGE COMPONENTS

PCC CLASS

FOOTING CONCRETE

ABUTMENT AND WALL

CONCRETE

PARAPET CONCRETE

ABUTMENT & WINGWALL FOOTINGS

ABUTMENT AND WINGWALL STEMS

HEADWALLS

PCC04460

PCC04462

3. EXPOSED EDGES: EXPOSED EDGES OF CONCRETE SHALL BE BEVELED 1"x1" UNLESS DIMENSIONED OTHERWISE.

4. CONCRETE COVER: ALL REINFORCEMENT SHALL HAVE TWO INCHES COVER UNLESS DIMENSIONED OTHERWISE.

5. REINFORCEMENT: ALL REINFORCEMENT SHALL BE GALVANIZED AFTER FABRICATION UNLESS NOTED OTHERWISE.

ALL REINFORCEMENT SHALL CONFORM TO THE REQUIREMENTS OF ASTM A767, CLASS 1, INCLUDING SUPPLEMENTAL

REQUIREMENTS. THE COST OF FURNISHING AND PLACING THIS REINFORCEMENT SHALL BE INCLUDED IN THE ITEM

"DEFORMED STEEL BARS - GALVANIZED." DRILLED SHAFT REINFORCING SHALL ALSO BE GALVANIZED AND PAID FOR

UNDER ITEM "DRILLED SHAFT (2.5FT)".

6. PREFORMED EXPANSION JOINT FILLER: THE COST OF FURNISHING AND INSTALLING PREFORMED EXPANSION JOINT

FILLER IS PAID FOR AS "1" PREFORMED EXPANSION JOINT FILLER FOR BRIDGES."

7. CONSTRUCTION JOINTS: CONSTRUCTION JOINTS, OTHER THAN THOSE SHOWN ON THE PLANS, WILL NOT BE

PERMITTED WITHOUT THE PRIOR APPROVAL OF THE ENGINEER.

8. PRECAST CONCRETE THREE SIDED RIGID FRAME: SEE SPECIAL PROVISIONS.

LIMIT OF CONSTRUCTION

SAWCUT & MATCH EXISTING

STA. 10+62.00

170

160

150

140

THRIE BEAM ATTACHMENT

(TYP.) (SHOWN BEYOND)

BEGIN STA. 11+01.36

VERTICAL PARAPET

(SHOWN BEYOND)

Existing 48" CMP Culvert (Typ.)

END STA. 11+19.37

LOW CHORD EL. 153.00

100-YEAR FLOOD EL. 152.43

ABUTMENT NO. 1

EL. 141.25

16'-0" X 5'-0" PRECAST CONCRETE

THREE SIDED RIGID FRAME

NATIVE STREAMBED

MATERIAL (12" THICK MIN.)

ROUNDED RIPRAP

COFFERDAM AND DEWATERING

CUT FLUSH WITH TOP OF FOOTING

ABUTMENT NO. 2

CHANNEL WIDTH = 16'-334"

(MEASURED ALONG SKEW)

BASELINE ELEVATION

SCALE: 1"=10'-0"

LIMIT OF CONSTRUCTION

SAWCUT & MATCH EXISTING

STA. 12+05.00

170

12" FUTURE WATER MAIN

WITH 3” THICK RIGID

160 POLYURETHANE FOAM, AND

A 22 GAUGE GALVANIZED

STEEL JACKET PER RWA

1'-9"

15'-0"

TRAVEL LANE

POINT OF APPLICATION

OF GRADE (P.O.G.)

VARIES

2% MIN.

33'-6"

℄

15'-0"

TRAVEL LANE

1'-9"

HEADWALL (TYP.)

VARIES

2% MIN.

150

MATERIAL FOR TACK COAT

PRECAST CONCRETE THREE

SIDED RIGID FRAME (TYP.)

TOP COURSE - 2" HMA S0.5 (LEVEL 2)

4" HMA S1.0

BINDER COURSE - 2" HMA S0.5 (LEVEL 2)

HMA S0.5 (VARIABLE DEPTH, SHIM

AS NECESSARY TO ACHIEVE GRADE)

140

TYPICAL PRECAST CONCRETE THREE SIDED

RIGID FRAME SECTION

SCALE: 14" = 1'-0"

STATE PROJECT NO. 9025-0030

DESIGNED

WRS

DRAWN

CHECKED

AS SHOWN

SCALE

JANUARY 30, 2024

DATE

11047.00059

PROJECT NO.

STR-01

DRAWING NO.

SHEET NO.

TOP OF WINGWALL

EL. 155.80

TOP OF WINGWALL

EL. 155.50

WINGWALL (TYP.)

10'-3"

100+25

WINGWALL FOOTING (TYP.)

33'-6"

ABUTMENT FOOTING (TYP.)

ABUTMENT NO. 1

6 UNITS @ ±5'-838" = 34'-2"

±5'-838"

CONSTRUCTION

JOINT (TYP.)

11°

5'-7"

100+50

TOP OF WINGWALL

EL. 150.50

4'-3"

(TYP.)

(TYP2.'-)0"

TOP OF WINGWALL

EL. 154.00

100+75

1'-9"

HEADWALL

(TYP.)

2'-0"

(TYP.)

21'-6"

ABUTMENT NO. 2

TOP OF WINGWALL

EL. 156.0

TOP OF WINGWALL

EL. 154.00

15'-0"

TOP OF WINGWALL

EL. 155.50

FRAMING PLAN

SCALE: 14"=1'-0"

TOP OF WINGWALL

EL. 152.0

160

EL. 157.71

3'-6"

EL. 158.33

155

EL. 154.17

TOP OF SLAB

EL. 158.49

3'-6"

160

EL. 157.98

150

UPSTREAM PARAPET

SCALE: 12"=1'-0"

1/2"

PRIMER COMPATIBLE

WITH JOINT WRAP

TOP OF PRECAST UNIT

JOINT SEAL PER MANUFACTURER

(SEE SPECIAL PROVISIONS)

PRECAST UNITS

JOINT SEAL DETAIL

SCALE: 112" = 1'-0"

NOTES

1. THE JOINT SEAL SHALL BE APPLIED TO THE ENTIRE

LENGTH OF THE JOINT BETWEEN PRECAST UNITS.

2. THE COST OF THE JOINT SEAL SHALL BE INCLUDED IN THE

COST OF ITEM "PRECAST CONCRETE THREE SIDED RIGID

FRAME".

3'-6"

160

EL. 158.11

EL. 158.61

EL. 158.41

3'-6"

160

EL. 157.78

155

EL. 154.17

TOP OF SLAB

150

1'-014"

5'-0" (TYP.)

16'-334"

DOWNSTREAM PARAPET

SCALE: 12"=1'-0"

WATERMAIN

BRACKET (TYP.)

150

STATE PROJECT NO. 9025-0030

DESIGNED

DRAWN

CHECKED

AS NOTED

SCALE

JANUARY 30, 2024

DATE

11047.00059

PROJECT NO.

STR-03

DRAWING NO.

SHEET NO.

28'-0"

15"Ø RCP

1'-9"

12'-0"

SIMULATED STONE

MASONRY (TYP.)

VARIES

2% MIN.

℄

1'-9"

12'-6"

HEADWALL (TYP.)

POINT OF APPLICATION

OF GRADE

VARIES

2% MIN.

12" FUTURE WATER MAIN

WITH 3” THICK RIGID

POLYURETHANE FOAM, AND

A 22 GAUGE GALVANIZED

STEEL JACKET PER RWA

PIPE SADDLE (TYP.)

TS4x4x12"

1'-412"

CONCRETE

HEADWALL

3" (TYP.) 2'-7"

2'-7"

WINGWALL/BACKWALL

3" COVER

(TYP.)

2'-0"

19"Ø BLOCKOUT

NOTE

DIMENSIONS SHOWN FOR 15"Ø REINFORCED CONCRETE PIPE,

SIMILAR FOR OTHER DRAINAGE AND UTILITY PIPES.

(2) - #6 EACH FACE

(TYP.)

MATERIAL FOR TACK COAT

TOP COURSE - 2" HMA S0.5 (LEVEL 2)

BINDER COURSE - 2" HMA S05 (LEVEL 2)

MEMBRANE WATERPROOFING

(WOVEN GLASS FABRIC)

1" HMA S0.25

(STATIC ROLLING ONLY)

PRECAST CONCRETE THREE

SIDED RIGID FRAME (TYP.)

HMA S0.5 (VARIABLE DEPTH, SHIM

AS NECESSARY TO ACHIEVE GRADE)

TYPICAL PRECAST CONCRETE THREE

SIDED RIGID FRAME SECTION

SCALE: 14" = 1'-0"

14" SADDLE PLATE

414"

2'-014"

2'-9"

TYPICAL PIPE OUTLET REINFORCING DETAIL

412"

CULVERT TOP SLAB

(4) - 34"Ø THREADED INSERTS

(6" MIN. EMBEDMENT)

(T1Y0P".)

SCALE: 12" = 1'-0"

#4 @ 12" (TYP.)

10"x10" PLATE

TYPICAL WATER MAIN SUPPORT DETAIL

SCALE: 1"=1'-0"

4'-10" (TYP.)

12"x12"

MEMBRANE WATERPROOFING

FOR BRIDGE DECKS

THREE-SIDED PRECAST

CONCRETE BOX CULVERT

16' WIDE x 5' HIGH

10"*

16'-0"

CONCRETE ABUTMENT (TYP.)

NOTE

*DIMENSIONS SHOWN PER OLDCASTLE PRECAST

AND MAY VARY PER MANUFACTURER

10 x 10 x 12"

PLATE

112" (TYP.)

14" WELD ALL AROUND

TS 4 x 4 x 12"

10"

PROVIDE

HOLES

FOR

34"Ø THREADED INSERTS

(TYP. OF 4)

WATER MAIN SUPPORT

PLATE DETAIL

SCALE: 112" = 1'-0"

16'-334" (SEE NOTE 5)

1014" (SEE NOTE 5)

TYPICAL PRECAST CONCRETE THREE SIDED RIGID FRAME REINFORCEMENT - SLAB BOTTOM MAT

SCALE: 12"= 1'-0"

(T1Y0P".)

#5 @ 10" (TYP.)

CULVERT TRANSPORT DIMENSIONS AND WEIGHT

THREE-SIDED PRECAST

SHIPPING

CONCRETE CULVERT SECTIONS LENGTH

SHIPPING

HEIGHT

SHIPPING

WIDTH

SHIPPING

WEIGHT

18 FT.

6.25 FT.

5.67 FT. 11.88 TONS

PRECAST CONCRETE THREE

SIDED RIGID FRAME LEG

NON-SHRINK GROUT

(4) #8 BARS

#4 @ 12" O.C.

#5 BARS @ 12" O.C.

EACH FACE/EACH WAY

STRUCTURE FILL

3'-0"

TYPICAL THREE-SIDED CULVERT SECTION

SCALE: 12"=1'-0"

2'-0"

1'-0"

3" (TYP.)

1" BEVEL (TYP.)

3" COVER

(TYP.)

2'-0"

#5 BARS @ 12" O.C.

FINISHED

GRADE

#5 BARS @ 12" O.C.

EACH FACE

#5 BARS @ 12" O.C.

STRUCTURE FILL

4'-3"

1'-6"

1" BEVEL

2" COVER

(TYP.)

#6 BARS @ 12" O.C.

FINISHED

GRADE

2'-0"

EL. 141.25

1'-0"

3" COVER (TYP.)

#4 BARS @ 12" O.C.

TOP & BOTTOM

7'-0"

12" THICK LAYER,

34" CRUSHED STONE

CONCRETE ABUTMENT SECTION

SCALE: 12"=1'-0"

EL. 141.25

12" THICK LAYER,

34" CRUSHED STONE

3" COVER (TYP.)

#5 BARS @ 12" O.C.

TOP & BOTTOM, EACH WAY

7'-9"

#5 BARS

IN-HOOK

TYPICAL WINGWALL SECTION

SCALE: 12"=1'-0"

16'-334" (SEE NOTE 5)

1014" (SEE NOTE 5)

TYPICAL PRECAST CONCRETE THREE SIDED RIGID FRAME REINFORCEMENT - SLAB BOTTOM MAT

SCALE: 12"= 1'-0"

4'-10"

#4 @ 1'-0"

#5 @ 10"

2" (TYP.)

4'-10"

(2) #5 BARS (TYP.)

#5 @ 1'-0"

(L=2'-6") (TYP.)

#7 @ 9"

1'-0" (TYP.)

1'-014" (TYP.)

#6 @ 6"

#5 @ 10"

#5 @ 1'-0"

#5 @ 10"

16'-334" (SEE NOTE 5)

#5 @ 10"

#5 @ 1'-0"

#7 @ 9"

2" (TYP.)

1014" (SEE NOTE 5)

TYPICAL PRECAST CONCRETE THREE SIDED RIGID FRAME REINFORCEMENT - SECTION

SCALE: 12" = 1'-0"

NOTES

1. REINFORCING BARS SHALL BE GALVANIZED AND CONFORM TO ASTM A615, GRADE 60.

2. THE CONCRETE COMPRESSIVE STRENGTH (f'c) SHALL BE 6,500 PSI.

3. LONGITUDINAL REINFORCEMENT SHALL BE 4" LESS THAN THE UNIT LENGTH.

4. FABRICATOR MAY ADJUST THE TOP MAT OF REINFORCING TO AVOID CONFLICTS WITH THE HEADWALL REINFORCING.

5. THE DIMENSIONS INDICATED ARE MEASURED ALONG THE SKEW.

STATE PROJECT NO. 9025-0030

DESIGNED

DRAWN

CHECKED

AS SHOWN

SCALE

JANUARY 30, 2024

DATE

11047.00059

PROJECT NO.

STR-05

DRAWING NO.

SHEET NO.

RFP #2324-17 Replacement of Industrial Ave. Bridge (No. 025030) over Unnamed Stream Addendum 3

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