BRIDGE REPAIR/REHABILITATION FEASIBILITY STUDY

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URS Corp. 260 Franklin Street Boston, MA 02110 PROJECT Mitchell River Bridge Rehabilitation Feasibility Study <strong>BRIDGE</strong> C-07-001 (437) MADE BY SUC DATE 1/31/2011 JOB NO. 10160874 CHECKED BY GCP DATE 2/14/2011 Alternative: Rehabilitation ESTIMATED QUANTITIES Channel & Channel Protection Timber Fender System Fender 0.50 7.60 1.00 66 3009.6 FB 6" x 12" x 41'-0" 0.50 41.00 1.00 4 984.0 FB Subtotal: 3993.6 FB Traffic Safety Approach Guardrail/Transitions Timber Traffic Rail Timber Post (10"x8" Nom) 0.667 4.250 0.833 87 2456.9 FB Timber Block (4.5"x13.5") 0.396 1.167 1.125 87 542.4 FB Top Rail (6.5"x6.5") 0.542 433.580 0.542 2 3053.1 FB Bott.Rail (12"x6" Nom) 1.000 433.580 0.500 2 5203.0 FB Subtotal: 11255.4 FB Roadway (Milling and Resurfacing) 24 120 2 640.0 SY Concrete for Sidewalk (refer to hand sketch) A 4.625 0.5 120 4 41.1 CY B 1.0 2.0 120 4 35.6 CY Subtotal: 76.7 CY Curb & Gutter 120 4 480.0 FT Demolition Spans 1, 8 & 12 31.50 16.13 3 1523.8 SF Spans 2 & 11 34.50 16.13 2 1112.6 SF Spans 3, 4, 5, 6, 7, 9 & 10 37.50 16.13 7 4232.8 SF Subtotal: 6869.3 SF 3/1/2011 Page 5/6 Rehab Replace Piles
URS Corp. 260 Franklin Street Boston, MA 02110 PROJECT Mitchell River Bridge Rehabilitation Feasibility Study <strong>BRIDGE</strong> C-07-001 (437) MADE BY SUC DATE 1/31/2011 JOB NO. 10160874 CHECKED BY GCP DATE 2/14/2011 Alternative: Rehabilitation ESTIMATED QUANTITIES SUMMARY UNIT PRICE QUANTITY COST Treated Timber $12,000.00 139.9 MB $1,678,800 Steel Ballast For Counterweight $1.50 100600 LB $150,900 Concrete for Sidewalk $875.00 76.7 CY $67,083 Roadway (Milling and Resurfacing) $150.00 640 SY $96,000 Curb & Gutter $22.50 480 FT $10,800 Timber Pile Replacement $100.00 7680 FT $768,000 Demolition $30.00 6869 SF $206,078 Operating Equipment $700,000.00 1 LS $700,000 Subtotal: $3,677,661 Traffic Control (10% of Total) $367,766 Mobilization (10% of Total Cost) $367,766 Contingencies (10% of Total Cost) $367,766 Total Cost =$4,781,000 3/1/2011 Page 6/6 Rehab Replace Piles
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BRIDGE REPAIR/REHABILITATION FEASIB
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1.0 EXECUTIVE SUMMARY The existing
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such there is a risk that the proje
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3.0 BRIDGE DESCRIPTION Bridge Numbe
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Photo 2 - Present Mitchell River Br
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4.0 ELEMENT CONDITION & REHABILITAT
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Based on the 1997 load rating analy
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promotes growth in the number and s
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4.2.2 Deck NBIS Condition Rating: 5
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Rehabilitation Scope: In order to m
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4.2.5 Railings NBIS Condition Ratin
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Functionality and Safety: Eliminati
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Although in-place preservative trea
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The bascule span timber stringers c
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Repair Scope: Although the timber m
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Use of an all steel counterweight w
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additional force effects, the speci
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typically loose. The steel guardrai
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Functionality and Safety: The cap b
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The surface decay and deterioration
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the interior of the piles where the
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Load Capacity: The current loss in
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Visual Impacts: Replacement of the
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Condition Description: There are cu
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5.0 OTHER CONSIDERATIONS 5.1 Naviga
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SUMMARY OF TIMBER ELEMENT SERVICE L
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5.3 Funding The project is currentl
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navigation opening. The estimated c
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• Continued replacement, repair a
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APPENDICES A. Existing Bridge Plans
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APPENDIX B Structures Field Inspect
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PAGE 3 OF 22 CITY/TOWN B.I.N. BR. D
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CITY/TOWN B.I.N. BR. DEPT. NO. 8.-S
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PAGE 2 OF 7 CITY/TOWN B.I.N. BR. DE
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APPENDIX C Load Rating Summary (199
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MAINTENANCE AND REHABILITATION OF T
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Figure 14-1. - Many covered bridges
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(discussed later in this chapter),
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Figure 14-5. - Liquid wood preserva
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wood, and other openings to the atm
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Table 14-1. - Number and size of ho
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member noting treatment information
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Figure 14-11. - Splicing and scabbi
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STRESS LAMINATING Stress laminating
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ond between separated sections, inc
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onding the old and new pile section
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GENERAL PROCEDURES FOR EPOXY REPAIR
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openings will allow epoxy to escape
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Another quality control problem is
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6. Avent, R.R. 1985. Factors affect
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Integrated Remedial Protection of W
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Figure l-Effect of fumigant applica
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Table 1- Residual MITC content in D
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of reinvasion (Forsyth and Morrell,
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might represent the best option, wh
Page 277 and 278: In: Ritter, M.A.; Duwadi, S.R.; Lee
Page 279 and 280: Present and Potential Commercial Ti
Page 281 and 282: 2 U.S. DEPT. OF AGRICULTURE HANDBOO
Page 289 and 290: 10 U.S. DEPT. OF AGRICULTURE HANDBO
Page 305 and 306: APPENDIX F FRP Pile Jackets
Page 307 and 308: about its hazard to human health. T
Page 309 and 310: Fig. 5. Cross section of wood pile
Page 311 and 312: (Lopez-Anido et al. 2004c). For exa
Page 313 and 314: Table 1. Cost Items for FRP Composi
Page 315 and 316: Hardcore Composites. (2000). Hardsh
Page 317 and 318: CALCULATION COVER SHEET Project Nam
Page 319 and 320: URS Corp. 260 Franklin Street Bosto
Page 327: URS Corp. 260 Franklin Street Bosto
Page 336: APPENDIX I Correspondence
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BRIDGE REPAIR/REHABILITATION FEASIBILITY STUDY

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