BRIDGE REPAIR/REHABILITATION FEASIBILITY STUDY

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Figure 14-8. - Treating holes for fumigants in horizontal members should be placed on both sides of checks or splits, and be bored to within 1-1/2 to 2 inches of the bottom of the member. Figure 14-9. - Application of liquid fumigants. (A) Liquid fumigants applied with commercial equipment (photo courtesy of Osmose Wood Preserving, Inc.). 14-10
Table 14-1. - Number and size of holes and dosage of fumigant required for piles. Figure 14-9. - Application of liquid fumigants (continued). (B) Liquid fumigants applied from a polyethylene squeeze bottle (photo courtesy of Jeff Morrell, Oregon State University).
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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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Page 211: APPENDIX C Load Rating Summary (199
Page 237 and 238: MAINTENANCE AND REHABILITATION OF T
Page 239 and 240: Figure 14-1. - Many covered bridges
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Page 243 and 244: Figure 14-5. - Liquid wood preserva
Page 245: wood, and other openings to the atm
Page 249 and 250: member noting treatment information
Page 251 and 252: Figure 14-11. - Splicing and scabbi
Page 253 and 254: STRESS LAMINATING Stress laminating
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Page 257 and 258: onding the old and new pile section
Page 259 and 260: GENERAL PROCEDURES FOR EPOXY REPAIR
Page 261 and 262: openings will allow epoxy to escape
Page 263 and 264: Another quality control problem is
Page 265 and 266: 6. Avent, R.R. 1985. Factors affect
Page 267 and 268: Integrated Remedial Protection of W
Page 269 and 270: Figure l-Effect of fumigant applica
Page 271 and 272: 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
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18 U.S. DEPT. OF AGRICULTURE HANDBO
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APPENDIX F FRP Pile Jackets
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about its hazard to human health. T
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Fig. 5. Cross section of wood pile
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(Lopez-Anido et al. 2004c). For exa
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Table 1. Cost Items for FRP Composi
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Hardcore Composites. (2000). Hardsh
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CALCULATION COVER SHEET Project Nam
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URS Corp. 260 Franklin Street Bosto
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APPENDIX I Correspondence
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BRIDGE REPAIR/REHABILITATION FEASIBILITY STUDY

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