THE CORPORATION OF TAY VALLEY TOWNSHIP REQUEST FOR PROPOSAL

Transcription

1 THE CORPORATION OF TAY VALLEY TOWNSHIP REQUEST FOR PROPOSAL ENGINEERING SERVICES TO REHABILITATE TWO (2) BRIDGES AND RECONSTRUCT ONE (1) STRUCTURAL CULVERT CONTRACT #218-PW-7 ADDENDUM NO. 2 THIS ADDENDUM SHALL BE INCORPORATED INTO THE RFP PACKAGE AND SHALL FORM A PART OF THE CONTRACT DOCUMENTS Date Issued: June 4, 218 Issued By: Amanda Mabo, Clerk Please note the following changes, corrections, additions, deletions, information and/or instructions in connection with the RFP Package. Failure to acknowledge receipt of this Addendum as per Part A Information to Bidders may render your submission nonresponsive. This addendum is to address the following question(s) and clarification(s): Question 1: Would you confirm the location of the culvert to be replaced in 218? Answer 1: The Culvert is 8 metres east of Menzies Munro Side Road and 7 metres west of Noonan Side Road. The location noted in the RFP and in the OSIM report is incorrect. See attached map. Question 2: Could the OSIM data associated with the three sites be made available? Answer 2: See attached 216 inspections for the three sites. Question 3: Please clarify hours to be included for the Contract Administration and Site Inspection services during construction. Please confirm that the 2 hours per week per site (8 week duration for each bridge and 3 week duration for the culvert) is only for site inspection services and that additional hours are to be included to cover additional tasks listed for Construction. Page 1 of 3

2 Question 3: THE CORPORATION OF TAY VALLEY TOWNSHIP REQUEST FOR PROPOSAL ENGINEERING SERVICES TO REHABILITATE TWO (2) BRIDGES AND RECONSTRUCT ONE (1) STRUCTURAL CULVERT CONTRACT #218-PW-7 ADDENDUM NO. 2 Yes, additional hours are to be included to cover the additional tasks listed for construction. Question 4: Please clarify if we are to include materials testing costs during construction. Answer 4: The Consultant will be required to obtain three quotes for material testing however the Township can be directly invoiced for the testing services and therefore testing costs should not be included in the submission. Question 5: Please confirm construction staging assumptions for completion of the work. i.e. will full road closures be permitted with implementation of a detour Answer 5: It is assumed that Noonan Side Road Bridge and Upper Scotch Line Culvert may be full road closures and Glen Tay Side Road Bridge will have to be staged construction. Amanda Mabo, Clerk clerk@tayvalleytwp.ca Page 2 of 3

3 THE CORPORATION OF TAY VALLEY TOWNSHIP REQUEST FOR PROPOSAL ENGINEERING SERVICES TO REHABILITATE TWO (2) BRIDGES AND RECONSTRUCT ONE (1) STRUCTURAL CULVERT CONTRACT #218-PW-7 ADDENDUM NO. 2 SITE Page 3 of 3

4 Bridge Inspection Report Glen Tay Road Bridge Slab on Prestress Girder Glen Tay Road Tay Valley Township Tay River.9km south of County Road 6, crossing Tay River Site ID District Built 1979 Length m Width 9.8 m Spans 1 Span Arrangement (m's) 18.5 Feature Under Water Insp Date October 11, 216 AADT 2 Latitude Inspector Steve Reid, C.E.T. Lanes 2 Longitude Assistant John Landry, EIT Skew Orient N-S Weather Mostly Sunny Speed 8 km/h Road Width 8.1 m Truck Load Posting Low/High 4 c 17 c Component Inspection Information Protected ECRC Deck (1) Deck Surface Length: m 8.1 m.2 m No evidence of any damage occurring on the deck top. Evidence of recent deck condition survey. Wearing surface condition is poor. Partial Inspection Soffit (1) Deck Soffit Length: m 1.5 m Good condition Glen Tay Road Bridge Page 1 of 8

5 Component Inspection Information Asphalt Wear Surf (1) Wear Surface Length: m 8.1 m 15.% 12.% Major Ravelling Capital Rec. Replace in 2 years Minor Potholing, Moderate Cracking Moderate to major cracking throughout. Areas of severe raveling throughout deck. Various minor potholes in southbound lane near the deck end. Patching of the wearing surface near the end dams. Debris accumulation along curb line. 2 X- Joint Conventional (2) Expansion Joints Length: 8.1 m 1 5.% Capital Rec. Replace in 2 years Moderate Detatched Seal, Major Scaling/Abrasion Moderate Plow Gouging, Minor End Dam Breakage Perf Def: Leaking The joints require replacement. to north abutment wall do to leaking joint. Spalling along the end dams and ballast walls both joints. Missing piece of armouring north joint. Joints are filled with debris. 3 Scupper & Pipe (2) Deck Drains Length: Conc Curb (2) Curbs Length: m.9 m.16 m Conc Curb (4) Approach Curb Length: 6 m.15 m.17 m Maintenance Unplug Scuppers Build-up of debris near drain pipes. West drain completely covered by debris. 1.%.5% Minor Scaling Minor Spalling Light scaling throughout. Light spalls on fascia above SE deck drain. Buildup of debris on sidewalk. 5.%.5% Light scaling and light spalling. Minor Scaling, Moderate Abrasion Minor Spalling Glen Tay Road Bridge Page 2 of 8

6 Component Inspection Information Timber Post & Guiderail (4) Approach Barrier Length: 2 m.7 m 1 15.% Moderate Checking Capital Rec. Replace in 2 years Major Decay, Moderate Impact Barrier end treatments do not meet current roadside safety standards. Many timber posts have moderate to major decay. Light checks and splits noted in barrier posts. Minor impact damage and plow damage at NE and SE. 4 Alum Stanchion & Pipe (2) Barrier Length: 25 m 1 m Some minor impact scrapes, overall satisfactory condition. Concrete-Prestressed (4) Girders Length: m.55 m 1.2 m Good condition. RC Diaphragm (6) Diaphragms Length: 2.3 m 1.25 m 5.% 5.% Minor Scaling Minor Delamination, Minor Spalling Capital Rec. Repair in 2 years Delamination and spalling on north abutment center diaphragm. 2 RC Abutment Wall (2) Abutment Stem Length: 9.2 m 1.25 m 5.% 3.% Moderate Rust Staining Capital Rec. Repair in 2 years Moderate Delamination, Minor Cracking Hairline to narrow vertical cracking under all girders at the south end. Delamination in the middle bay at the north end of the abutment wall face and bearing seat. Rust staining at SW above bearing seat. Exposed rebar and spall on NE abutment wall above bearing seat. Hairline vertical crack at middle of West girder. 3 RC Wing Walls (4) Wing Walls Length: 3 m 1 m Satisfactory condition Glen Tay Road Bridge Page 3 of 8

7 Component Inspection Information Approach Slab (2) Approach Slab Length: 6 m 8.1 m.25 m Unclear if approach slabs are present. Partial Inspection Laminated Rubber Brg (8) Abutment Bearings Length: 2.% Minor Weathering Satisfactory condition. Spread Footing (2) Abutment Foundation Length: No performance deficiencies detected. Not Inspected Water Channel (1) Channel Well centered under bridge. Some rock debris upstream. Embankment (4) Embankment Maintenance Remove Brush/Trees Satisfactory condition, tree growth at all corners Glen Tay Road Bridge Page 4 of 8

8 Capital Needs Cost Estimate Break-Down Item Req'd Units Quantity Unit Price $ Estimated Cost Misc Concrete Repairs Deck Concrete Overlay Deck Replacement Barrier Wall Replacement Expansion Joint Waterproof & Pave Bearing Replacement Approach Guiderail m m Count m $5 $35 $2, $1,5 $3, $25 $5, $2 $1, $ $ $ $58,8 $45,938 $ $24, Other Work $ Structural Items Subtotal $139, Mobilization General Sitework 1% $14, Estimated Traffic Management & Civil Items $15, Contract Admin & Contingencies 2% $34, Total Rehabilitation Cost Estimate $22, Rec'd Investigations Deck Condion Survey Enhanced Inspection Recommended Capital Work Summary Underwater Investigation Ice Inspection Misc concrete repairs, WP&P, X-jnt, Approach GR, Boat Inspection Structure Evaluation Load Planning Posting Study Recommended Capital Year 218 Inspection Comments The bridge is in good condition with the exception of the expansion joints. Leaking joints are beginning to cause damage to substructure. Recommend replacing joints, (consider semi-integral) patch abutment and deck, waterproof and pave. Bridge Condition Index: 73.1 Parabolic Depreciation: 6.7 % Straight Line Depreciation: 4.3 % Estimated Replacement Value: $798, Estimated Remaining Service Life: 53 Years Glen Tay Road Bridge Page 5 of 8

9 Image 11 Image 93 East elevation Image 94 North approach Image 95 South approach Image 96 South expansion joint Image 97 North expansion joint d armouring in south expansion joint Glen Tay Road Bridge Page 6 of 8

10 Image 98 Image 99 Typ wearing surface Typ east curb and railing Image 1 Image 12 Pothole in at south expansion on east side South abutment wall Image 13 Image 14 Typ soffit detail West elevation Glen Tay Road Bridge Page 7 of 8

11 Image 15 Image 16 North abutment wall Image 17 Delamination in north abutment and spall on diaphragm Image 19 Northwest wing wall Image 11 Upstream channel west Image 111 Downstream channel east Decay in northwest approach railing post Glen Tay Road Bridge Page 8 of 8

12 Bridge Inspection Report Noonan s Side Road Bridge Concrete Rigid Frame CIP Noonan Road Tay Valley Township Tay River 1.2 km North of Upper Scotch Line Road Span Arrangement (m's) 8.8 Feature Under Site ID District Navigable Channel Built 1967 Length 1 m Width 9.1 m Spans 1 Insp Date August 31, 216 AADT 5 Latitude Inspector Harold Kleywegt, P.Eng. Lanes 2 Longitude Assistant Steve Reid, C.E.T. Skew Orient E-W Weather Mostly Mixed Sun & Cloud Speed 8 km/h Road Width 7.3 m Truck Load Posting Low/High 2 c 26 c Component Inspection Information Protected BSRC Deck (1) Deck Surface Length: 1 m 7.3 m 2.% 5.% Capital Rec. Repair in 5 years Major Scaling, Minor Abrasion Minor Delamination, Minor Spalling Scattered delamination noted. Tining mostly abraded. Evidence of deck condition survey. 2 Partial Inspection Soffit (1) Deck Soffit Length: 8.8 m 9.1 m.1% Minor Spalling Fascia on north side has two small impact spalls of unknown origin. 2 Asphalt Wear Surf (1) Wear Surface Length: 3 m 7.7 m Gravel approaches. Generally in good condition Noonan s Side Road Bridge Page 1 of 6

13 Component Inspection Information Scupper & Pipe (2) Deck Drains Length: Maintenance Unplug Scuppers Filled with debris at the time of inspection. PN Conc Curb (2) Curbs Length: 18.7 m.58 m.165 m 1.%.1% Minor Scaling Minor Spalling Minor plow abrasions along curb face. Spall at northwest corner. PN 2 RC Parapet (2) Barrier Length: 18.7 m.245 m.61 m No concerns noted. Twin Pipe Hand Rail (2) Railings Length: 18.7 m 1 1.% Minor Deformation, Moderate Tarnishing Minor Impact Impact damage at north rail. End cap missing at southeast. PN 2 RC Abutment Wall (2) Abutment Stem Length: 8 m 1.5 m 5 Moderate Scaling Lower 1.2 m has uniform prominent scaling. RC Wing Walls (4) Wing Walls Length: 5 m 1.25 m 3 Moderate Scaling Lower 1 m has uniform prominent scaling Noonan s Side Road Bridge Page 2 of 6

14 Component Inspection Information Spread Footing (2) Abutment Foundation Length: Not visible at the time of inspection. No evidence of geotechnical instability. Assumed to be generally in good condition. PN Water Channel (1) Channel Embankment (4) Embankment 2.% Minor Bank/Channel Scour Some scour to.5 m depth noted along east abutment. Otherwise stable stream bottom. Remnants of beaver dam downstream. Some erosion evident but not a concern at this time. 2 Delineator (4) Signs Length: Review warrant for guide rail Noonan s Side Road Bridge Page 3 of 6

15 Capital Needs Cost Estimate Break-Down Item Req'd Units Quantity Unit Price $ Estimated Cost Misc Concrete Repairs Deck Concrete Overlay Deck Replacement Barrier Wall Replacement Expansion Joint Waterproof & Pave Bearing Replacement Approach Guiderail m m Count m $5 $35 $2, $1,5 $3, $25 $5, $2 $12,5 $31,85 $ $ $ $22,75 $ $ Other Work $ Structural Items Subtotal $67, Mobilization General Sitework 1% $1, Estimated Traffic Management & Civil Items $15, Contract Admin & Contingencies 2% $18, Total Rehabilitation Cost Estimate $11, Rec'd Investigations Deck Condion Survey Enhanced Inspection Recommended Capital Work Summary Misc concrete repairs, O'Lay, WP&P, Underwater Investigation Ice Inspection Boat Inspection Structure Evaluation Load Planning Posting Study Recommended Capital Year 217 Inspection Comments Deck surface requires rehabilitation within the next few years. Ideally this should happen in 217. Bridge Condition Index: 68.8 Parabolic Depreciation: 29.7 % Straight Line Depreciation: 12.8 % Estimated Replacement Value: $791, Estimated Remaining Service Life: 51 Years Noonan s Side Road Bridge Page 4 of 6

16 Image 7 Image 64 North elevation Image 65 West approach Image 66 Upstream channel south Downstream channel north Image 67 Image 68 East approach Typ exposed deck condition Noonan s Side Road Bridge Page 5 of 6

17 Image 69 Image 71 Typ curb & parapet wall north shown East abutment wall Image 72 Image 73 West abutment wall Small spalls north fascia Image 74 Image 75 Typ soffit detail SW wing wall & abutment wall scaling Noonan s Side Road Bridge Page 6 of 6

18 Culvert Inspection Report Found Culvert Soil-Steel Structure Upper Scotch Line Tay Valley Township Tributary - Tay Snye 1.3km east of Menzies Munro Sideroad Site ID Found 1 District Built 198 Length 17.2 m Width 3.5 m Spans 1 Feature Through Water Insp Date August 31, 216 AADT 2 Latitude Inspector Harold Kleywegt, P.Eng. Lanes 2 Longitude Assistant Steve Reid, C.E.T. Skew Orient N-S Weather Mostly Mixed Sun & Cloud Speed km/h Road Width 6.7 m Truck Load Posting Low/High 2 c 26 c Fill 1 m H2O Depth.5 m Component Inspection Information CS Plate Pipe Arch (1) Conduit 2 Major Perforation, Minor Deformation/Bulging 4 Length: 17.2 m 3.5 m 2 m Capital Rec. Replace in 3 years Perf Def: Insufficient Barrel Length Year of installation estimated. Bottom of culvert is severely perforated and substantially corroded. Inlet end is deformed and slightly obstructing channel, see image. Asphalt Wear Surf (1) Wear Surface Length: 3 m 6.5 m Tar and chip surface. Timber Post & Cable (2) Barrier Length: 2 m.7 m Fair condition. Found 1 Found Culvert Page 1 of 6

19 Component Inspection Information Water Channel (1) Channel Some rocky debris has washed into inlet end. Opening appears adequate. Embankment (2) Embankment Some erosion noted at culvert inlet. Well vegetated. Delineator (2) Signs Length: Located in NE and SW. Found 1 Found Culvert Page 2 of 6

20 Capital Needs Cost Estimate Break-Down Item Req'd Units Quantity Unit Price $ Estimated Cost Cost of asphalt removal: $2,6 Cost of waterproofing: $ Misc Concrete Repairs. $5 $ Cost of dewatering: $41, Deck Concrete Overlay Cost of road replace: 6.2 $35 $17, $ Cost Deck erosion Replacement control: $15, 6.2 Cost of SBGR: $2, $ Cost Barrier of excavation: Wall Replacement m $11, 41.2 Cost for seeding: $1,5 $1, $ Cost Expansion of existing Joint structure removal: m $6,7. Instalation Waterproof Cost & Pave for Similar Size Steel: $19, 8. Bearing Replacement Approach Guiderail Count m. 8. $3, $25 $5, $2 $ $ $ $ New Steel Culvert Structural Items Subtotal $113, Mobilization General Sitework 1% $2, Estimated Traffic Management & Civil Items $3, Contract Admin & Contingencies 2% $33, Total Rehabilitation Cost Estimate $196, Rec'd Investigations Deck Condion Survey Enhanced Inspection Recommended Capital Work Summary New Steel culvert Underwater Investigation Ice Inspection Boat Inspection Structure Evaluation Load Planning Posting Study Recommended Capital Year 218 Inspection Comments Found culvert 216, date of construction estimated. Culvert is at end of service life and should be replaced within two years. Capital estimate is for a steel culvert replacement. A concrete culvert will have at least twice the service life as a steel culvert, and should be considered. Bridge Condition Index: 59.9 Parabolic Depreciation:. % Straight Line Depreciation:. % Estimated Replacement Value: $196, Estimated Remaining Service Life: Years Found 1 Found Culvert Page 3 of 6

21 Image 92 Image 87 North elevation Image 88 South elevation Image 89 Perforations on west wall south end Typ corrosion in walls Image 9 Image 91 Small perforations in east wall Typ through barrel Found 1 Found Culvert Page 4 of 6

22 Image 93 Image 94 West approach Image 95 Downstream channel north Image 96 Upstream channel south East approach Found 1 Found Culvert Page 5 of 6

23 Found 1 Found Culvert Page 6 of 6