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 W L H/T No. Quantity Units Deck ft ft ft Timber Wearing Surface Spans 1,2,3,4,5,6,9,10,11,12 25.33 15.96 0.25 9 10916.6 FB Bascule Spans 25.33 50.00 0.25 1 3800.0 FB Subtotal: 14716.6 FB Timber Structural Deck Spans 1, 8 & 12 34.25 16.13 0.33 3 6630.2 FB Spans 2 & 11 36.25 16.13 0.33 2 4678.3 FB Spans 3, 4, 5, 6, 7, 9 & 10 38.25 16.13 0.33 7 17277.4 FB Subtotal: 28585.9 FB Timber Sidewalk Included in "Timber Structural Deck" Timber Bridge Railing 6" x 6" Top Rail 0.50 575.16 0.50 1 1725.5 FB 9 1/2" x 4 1/2" Mid Rail 0.38 575.16 0.79 1 2049.0 FB 4" x 6" Bottom Rail 0.33 575.16 0.50 1 1150.3 FB 6" x 8" x 24" Block 0.50 2.00 0.67 192 1536.0 FB 8" x 8" Post 0.67 5.17 0.67 96 2645.3 FB Subtotal: 9106.1 FB 3/1/2011 Page 1/6 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 Superstructure Stringers 6" x 16" (Including Blocking) Span 1 0.50 15.96 1.33 26 3319.7 FB Span 2 0.50 15.96 1.33 27 3447.4 FB Span 3 0.50 15.96 1.33 29 3702.7 FB Span 4 0.50 15.96 1.33 30 3830.4 FB Span 5 0.50 15.96 1.33 29 3702.7 FB Span 6 0.50 15.96 1.33 30 3830.4 FB Span 7 (Counter Weight) 0.50 11.45 1.33 31 2839.6 FB Span 8 (Bascule Span) 0.67 22.00 1.33 25 5869.6 FB Span 9 0.50 16.55 1.33 30 3972.0 FB Span 10 0.50 15.96 1.33 29 3702.7 FB Span 11 0.50 15.96 1.33 27 3447.4 FB Span 12 0.50 15.96 1.33 26 3319.7 FB Diaphragm Blocks 0.79 1.00 1.00 327 3106.5 FB Subtotal: 48090.7 FB Lifting Beam 0.67 35.50 1.00 1 285.4 FB King Posts 1.17 29.25 1.17 2 955.4 FB 3/1/2011 Page 2/6 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
Page 273 and 274: 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 323: URS Corp. 260 Franklin Street Bosto
Page 336: APPENDIX I Correspondence
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BRIDGE REPAIR/REHABILITATION FEASIBILITY STUDY

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