BRIDGE REPAIR/REHABILITATION FEASIBILITY STUDY

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APPENDIX C Load Rating Summary (1997)
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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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APPENDIX D In-place Preservative Tr
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Bridge rehabilitation is another fo
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Figure 14-2. - Dirt and debris on t
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Figure 14-4. - (A) Minor cracking i
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Figure 14-6. - Paste wood preservat
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Figure 14-8. - Treating holes for f
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important to stop filling, to plug
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location where load transfer is res
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Existing pile Reinforcing steel Det
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14.5 EPOXY REPAIR Epoxies consist o
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glulam member and replaced with new
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Figure 14-17. - Pile repair using p
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Port Setting and Joint Sealing When
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QUALITY CONTROL FOR EPOXY REPAIRS A
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from overloads or other mechanical
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24. Hurlbut, B.B. 1978. Basic evalu
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kerfing, but not all of these activ
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wood. Tubes are normally filled at
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MITC-FUME Levels in Southern Pine 0
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Table 3- Residual boron and fluorid
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temperature, and moisture content.
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APPENDIX E Commercial Timbers of th
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Present and Potential Commercial Ti
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COMMERCIAL TIMBERS OF THE CARIBBEAN
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Repair of Wood Piles Using Prefabri
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Fig. 2. Repair method using corruga
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Fig. 7. Fiber reinforcement of fibe
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Fig. 11. Application of fiber-reinf
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Table 2. Cost items for wood pile r
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APPENDIX G Cost Estimates
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URS Corp. 260 Franklin Street Bosto
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APPENDIX H Operating Equipment Eval
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