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 COUNTERWEIGHT W L H/T Number Vol Ballast 31.50 3.50 1.86 1 100600 LB Subtotal: 100600 LB Substructure Timber Pile Replacement 60.00 128.00 7680.0 FT Timber Pile Caps West Abutment Cap 0.67 31.08 0.67 1 165.8 FB Bent No.1 1.33 31.50 1.17 1 588.0 FB Bent Nos. 2,3,4,4A,5,6A,6,8,9 &10 1.33 37.50 1.17 11 7700.0 FB Bent Nos. 7A 0.67 41.50 1.33 2 889.8 FB Bent No. 11 1.33 31.35 1.17 1 585.3 FB East Abutment Cap 1.00 31.42 0.67 1 251.3 FB Wood Blocking 1.00 1.50 1.33 138 3312.0 FB Subtotal: 13492.1 FB 3/1/2011 Page 3/6 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 Timber Bracing - Lateral Bent No. 1 0.50 160.40 1.00 1 962.4 FB Bent No. 2 0.50 164.00 1.00 1 984.0 FB Bent No. 3 0.50 164.00 1.00 1 984.0 FB Bent No. 4 0.50 164.00 1.00 1 984.0 FB Bent No. 4A 0.50 14.80 1.00 1 88.8 FB Bent No. 5 0.50 106.00 1.00 1 636.0 FB Bent No. 6A 0.50 14.80 1.00 1 88.8 FB Bent No. 6 0.50 164.00 1.00 1 984.0 FB Bent No. 7A 0.50 40.50 1.00 1 243.0 FB Bent No. 8 0.50 0.00 1.00 1 0.0 FB Bent No. 9 0.50 27.60 1.00 1 165.6 FB Bent No. 10 0.50 146.00 1.00 1 876.0 FB Bent No. 11 0.50 165.64 1.00 1 993.8 FB Subtotal: 7990.4 FB Timber Bracing - Longitudinal Bent No. 2 to Bent No. 3 0.50 19.10 1.00 4 458.4 FB Bent No. 5 to Bent No. 6A 0.50 19.10 1.00 4 458.4 FB Bent No. 8 to Bent No. 9 0.50 19.10 1.00 4 458.4 FB Subtotal: 1375.2 FB Concrete Abutments East Abut. Backwall 0.50 1.00 0.75 1 0.38 CF East Abut. Breastwall 0.17 4.50 0.42 1 0.31 CF Subtotal: 0.69 CF 3/1/2011 Page 4/6 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,
Page 275 and 276: 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 325: URS Corp. 260 Franklin Street Bosto
Page 336: APPENDIX I Correspondence
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BRIDGE REPAIR/REHABILITATION FEASIBILITY STUDY

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