Report_Bridge_Insp_Rpt_STR_4290-002P.pdf

STRUCTURE SUMMARY STRUCTURE NO. 4290-002P

BEAVERDAM CREEK BRIDGE INSPECTION DATE: 6/1/15

BRIDGE IDENTIFICATION AND DESCRIPTION

MAIN SPAN MATERIAL: ....... WOOD or TIMBER NO. OF MAIN SPANS:

MAIN SPAN TYPE: ............... STRINGER/MULTI-BEAM or GIRDER NO. OF APPR. SPANS:

# OF BEAMS, MAIN SPAN: .. 3 STRUCT. TOTAL LENGTH: .. 72.0 FT (21.9 M)

DECK TYPE: ......................... WOOD OR TIMBER MAX. SPAN LENGTH: .......... 50.0 FT (15.2 M) WEARING SURFACE: .......... NONE DECK W IDTH: ...................... 18.0 FT (5.5 M)

ABUT. FOUNDATIONS: ........ N/A CURB TO CURB W IDTH: ..... 16.0 FT (4.9 M)

PIER FOUNDATION(S): ........ PILE BENT YEAR BUILT:

ABUTMENT / PIER MAT'L: ... N/A / WOOD OR TIMBER YEAR RECONSTRUCTED: .. N/A

PROJ./PLAN REF. NO: ......... 3A2,4A2 / NONE SKEW ANGLE: ..................... 0 °

NPS ROAD CLASS: .............. 1 - PRINCIPAL PARK ROAD FRACTURE CRITICAL: ........ NO STRUCTURE HISTORY: ...... 1985-JOINT REPAIR. 2011-PARTIAL DECK REPLACEMENT AT EAST END, PILE

ENCAPSULATION AT EAST BENT.

LOCATION

COLONIAL NATIONAL HISTORICAL PARK MILE POINT: ..................... 5.81 (KM PT 9.35) STATE: ................................. VIRGINIA LOCATION: 1.3 MILES WEST OF U.S. ROUTE 17.

FACILITY CARRIED: ............ YORKTOWN WEST TOUR ROAD

FEATURE INTERSECTED: .. BEAVERDAM CREEK

STRUCTURE EVALUATION SUMMARY

This timber multi-beam bridge is in fair condition overall. The main problem is moderate decay (up to 1-1/4" deep) and moderate abrasion (up to 1/2") at several areas throughout the deck surface. These problems should be addressed by installing timber running planks in the near future.

Additional problems include minor to moderate checking of the remaining timber structural elements (moderate to severe at the curbs) and a 4" wide x 2.5" high x 3" deep void in the top of Pile #1 at the west bent (no change since the last inspection). Although not observed during this inspection, carpenter ant activity has been noted at isolated locations of the timber curbs in previous inspections, and could spread throughout the deck if appropriate action is not taken. Therefore, the deck and curbs should be treated for carpenter ants and coated with a protective sealant to help prevent additional deterioration and prolong the life of the structure.

Corrective measures should be taken as outlined in this report to prevent the possible development of more serious or costly problems in the future.

INSPECTION TEAM: K.M. GREEN, J.C. KEETON (CLARK NEXSEN)

CONDITION ASSESSMENT:

KATIE M. GREEN, PE, FIELD TEAM LEADER

REPORT REVIEW :

CARLOS CASTRO, P.E., FIELD TEAM LEADER 571-434-1546

REPORT APPROVAL: DATE: 10/29/15

JORGOMAI CEESAY, PH.D., P.E., BIP SUPERVISORY ENGINEER 703-404-6244

RECOMMENDATIONS AND ESTIMATED COSTS STRUCTURE NO. 4290-002P

A (Critical) - Structure is closed, in imminent danger of collapse, or presents a critical safety hazard.

B (Major) - Structure is seriously deficient or presents a safety hazard, but can remain in service at reduced loads or with frequent inspections.

C (Moderate) - Structure is deficient, functionally obsolete, or requires substantial repairs to prevent a serious deficiency or unsafe condition.

D (Minor) - Structure is generally in good condition. Preventative maintenance may be required.

E (Special) - Structure is under construction or reconstruction.

C226 PRIORITY OF IMPROVEMENT

ITEM

NO.

MAINTENANCE RECOMMENDATIONS

(GENERALLY NOT FLHP ELIGIBLE)

QTY. UNIT COST

UNIT

ESTIMATE

COST

PRELIM.

58.3 INSTALL TIMBER RUNNING PLANKS ON DECK SURFACE TO PROTECT FROM

WEAR.

1 LS

222.7 INSTALL TYPE 3 OBJECT MARKERS AT BRIDGE CORNERS AT WEST APPROACH. 4 EA

PRELIM. MAINTENANCE TOTAL :

ITEM

NO.

REHABILITATION/RECONSTRUCTION

(TYPICALLY NEEDED WITHIN 5 YEARS) QTY. UNIT UNIT

COST ESTIMATES

PRELIM. COST

REHAB. RECONSTR.

58.1,5 TREAT CURBS AND DECK FOR CARPENTER ANTS AND SEAL WITH

PROTECTIVE COATING.

1 LS

58, 59, 60 CONTRACT COSTS FOR MOBILIZATION, TRAFFIC CONTROL, AND

DESIGN/CONSTRUCTION ENGINEERING.

1 LS

PRELIM. REHABILITATION/RECONSTRUCTION TOTAL :

COST ESTIMATE SUMMARY

PRELIM. MAINTENANCE TOTAL:

PRELIM. REHABILITATION TOTAL:

PRELIM. RECONSTRUCTION TOTAL: ..

TOTAL ITEMIZED COSTS:

PRELIMINARY ESTIMATE TOTAL* :

(*Includes typical contract costs for mobilization, traffic control, and design/construction engineering; but does not include detour bridges, work beyond the bridge limits, or work not listed above. Estimates are approximate and are for preliminary planning purposes only; they should not be used as a complete or final engineers estimate.)

REMARKS: Cost estimates assume that the recommended actions will be combined with similar work being performed on other structures.

FIELD INSPECTION REPORT STRUCTURE NO. 4290-002P

G = GOOD (CODES 7 - 9) F = FAIR (CODES 5 - 6) P = POOR (CODES 0 - 4)

CONDITION RATING CODE EQUIVALENTS FOR SUB-ELEMENTS

SERIOUS CONDITION - loss of section, deterioration, spalling, or scour have seriously affected primary structural components. Local failures are possible.

Fatigue cracks in steel or shear cracks in concrete may be present.

CRITICAL CONDITION - advanced deterioration of primary structural elements. Fatigue cracks in steel or shear cracks in concrete may be present or scour may have removed substructure support. Unless closely monitored it may be necessary to close the structure until corrective action can be taken.

“IMMINENT” FAILURE CONDITION - major deterioration or section loss present in critical structural components or obvious vertical or horizontal movement affecting structure stability. Structure is closed to traffic but corrective action may return structure to light service.

FAILED CONDITION - out of service; beyond corrective action.

CONDITION RATING CODES FOR ITEMS 58 - 62, 222, 223

NOT APPLICABLE

EXCELLENT CONDITION

VERY GOOD CONDITION - no problems noted.

GOOD CONDITION - some minor problems.

SATISFACTORY CONDITION - structural elements show some minor deterioration.

FAIR CONDITION - all primary structural elements are sound but may have minor section loss, cracking, spalling, or scour.

POOR CONDITION - advanced section loss, deterioration, spalling, or scour.

N

58. DECK ITEM REFERENCE AND REMARKS

OTHER

ALIGNMENT

DEFLECTION AND/OR VIBRATION

FASCIA(E)

DIAPHRAGMS AND BRACING

TRUSSES

FLOOR BEAMS AND STRINGERS

ARCH(ES) OR SLAB(S)

GIRDERS OR BEAMS

BEARING DEVICES

59. SUPERSTRUCTURE

OTHER

DEFLECTION AND/OR VIBRATION

UTILITIES

DRAINS AND DRAINAGE

PARAPETS AND/OR RAILINGS

CURBS, SIDEWALKS, AND MEDIAN

RIDEABILITY

WEARING SURFACE

EXPANSION JOINTS

DECK SLAB

OTHER

SETTLEMENT OR DEFLECTION

EROSION AND/OR SCOUR

FOUNDATIONS

CAPS AND/OR BEARING SEATS

PILE BENTS

WALLS AND/OR COLUMNS

PIER(S)

OTHER

SLOPE PROTECTION

SETTLEMENT OR DEFLECTION

EROSION AND/OR SCOUR

EXPANSION JOINTS

WEEP HOLES

WINGWALLS

FOUNDATIONS

BACKWALLS AND/OR BULKHEADS

CAPS AND/OR BEARING SEATS

PILE BENTS

BREASTWALLS OR COLUMNS

ABUTMENTS

60. SUBSTRUCTURE

1.

10.

2.

3.

4.

5.

6.

7.

8.

9.

10.

9.

8.

7.

6.

5.

4.

3.

2.

1.

PAINT

11.

N F N N N G N N G

N G

N N N N N N N N N N N N

N F G N G G N

11.

10.

9.

8.

7.

6.

5.

4.

3.

2.

1.

12.

13.

14.

15.

16.

17.

18.

19.

58.1 WIDESPREAD MODERATE DECAY (UP TO 1-1/4"D) AND MODERATE

ABRASION (UP TO 1/2"D) OF DECK SURFACE AT ALL LOCATIONS

OTHER THAN NEWER SECTION AT EAST END; CREOSOTE ALMOST

COMPLETELY WORN OFF TOP AND SIDES OF DECK PLANKS.

ASPHALT PAVEMENT HAS MIGRATED ONTO WEST END OF DECK

FROM WEST APPROACH.

CREOSOTE TREATMENT ON DECK UNDERSIDE IN GOOD

CONDITION.

58.5 MODERATE TO SEVERE CHECKING OF TIMBER LAMINATED CURBS.

MINOR RUSTING OF CURB HARDWARE THROUGHOUT. MINOR TO

MODERATE DECAY AT ENDS OF CURBS; MINOR VEGETATION

GROWTH ON CURBS. MINOR COLLISION DAMAGE TO WEST END OF

NORTH CURB AND EAST END OF SOUTH CURB. PREVIOUS

REPORTS OF CARPENTER ANT ACTIVITY AT ISOLATED LOCATIONS

WERE NOT OBSERVED DURING THIS INSPECTION.

58.7 PREVIOUS REPORTS OF MINOR TO MODERATE PONDING ON DECK

SURFACE IN WHEEL PATHS COULD NOT BE VERIFIED DURING THIS

INSPECTION DUE TO DRY CONDITIONS.

59.2 GLULAM TIMBER BEAMS. MINOR SEPARATION ALONG LAMINATIONS

OF BEAMS AND MINOR TO MODERATE CHECKING OF BEAMS IN

SOME AREAS. MINOR SPLINTER (APPROXIMATELY 27"L) ON

BOTTOM OF CENTER BEAM, AT APPROXIMATELY 1/3 POINT FROM

EAST END OF CENTER SPAN.

CREOSOTE TREATMENT ON BEAMS IN GOOD CONDITION.

60 STRUCTURE HAS NO ABUTMENTS; SUPERSTRUCTURE

CANTILEVERS FROM PILE BENTS.

60.14 FIBERGLASS JACKETS ON PILES #2 AND #4 AT EAST BENT. VOID

(4"W X 2.5"H X 3"D) IN TOP OF PILE #1 AT WEST BENT, NO CHANGE

SINCE LAST INSPECTION. REMAINING PILES ARE SOFT WITH MINOR

CHECKING.

60.15 MINOR CHECKING OF TIMBER BENT CAPS. 19"L X 1.5"H SPLINTER

(UP TO 2"D) IN EAST BENT CAP OVER PILE #3, 8" FROM TOP OF CAP.

CREOSOTE TREATMENT ON BENT CAPS IN GOOD CONDITION.

N G F N F N

N

N

G

F

INSPECTION DATE: 6/1/15

STRUCTURE NO. 4290-002P FIELD INSPECTION REPORT

BEAVERDAM CREEK BRIDGE

ITEM REFERENCE AND REMARKS

AVERAGE CLEAR OPENING8.

NORMAL VELOCITY 7.

ADEQUACY OF OPENING6.

OTHER 5.

WATERWAY OBSTRUCTIONS 4.

CHANNEL PROTECTION3.

EROSION AND/OR SCOUR2.

1. ALIGNMENT

61. CHANNEL 6

G F N G N

LOW

SUFF

5 FT.

9. STREAM BED COMPOSITION :

SILT, SAND

222. APPROACHES 7

OTHER9.

ALIGNMENT8.

SIGNS7.

SETTLEMENT6.

EROSION5.

SURFACING 4.

APPROACH GUARDRAIL 3.

RELIEF JOINTS2.

1. APPROACH SLABS N

N N G G G G G N

223. RETAINING WALL N

OTHER6.

SETTLEMENT OR DEFLECTION5.

EROSION AND/OR SCOUR4.

FOUNDATION3.

WEEP HOLES2.

1. WALL

36. TRAFFIC AND SAFETY FEATURES

APPROACH GUARDRAIL ENDS D.

APPROACH GUARDRAILS C.

TRANSITIONS B.

BRIDGE RAILINGSA. 0

N N N

61.2 CHANNEL BOTTOM HAS SCOURED 4.9' SINCE EARLIEST

RECORDINGS IN 1978. CONDITION DOES NOT THREATEN

SUBSTRUCTURE AT THIS TIME.

222.7 TOUR LOOP ROAD POSTED FOR 5 TONS. REFLECTOR ON EAST

END OF NORTH CURB. NO TYPE 3 OBJECT MARKERS AT WEST

APPROACH.

36.A NO BRIDGE RAILINGS PRESENT.

TRAFFIC SAFETY RATING CODES

N

Does not meet standards or a safety feature is required and none is provided.

Meets currently acceptable standards.

Not applicable or a safety feature is not required.

STRUCTURE LOAD RATING STRUCTURE NO. 4290-002P

TRUCK TYPE

INVENTORY RATING (NORMAL TRAFFIC) OPERATING RATING (MAXIMUM LOAD)

TONS METRIC TONS TONS METRIC TONS

H 12 11 16 14

HS 15 14 20 19

TYPE 3 14 13 19 17

TYPE 3S2 22 20 29 26

TYPE 3-3 27 24 36 32

DESIGN LOADING: H15 (M13.5)

CAPACITY MEETS OR EXCEEDS DESIGN LOAD

X CAPACITY IS LESS THAN DESIGN LOAD

ORIGINAL LOAD RATING CALCULATION APPLICABLE

ORIGINAL LOAD RATING CALCULATION REVISED

DATE OF LOAD RATING CALCULATION:

LOAD RATING CONTROLLED BY:

REMARKS: LOAD RATING REDUCED DUE TO DETERIORATION OF TIMBER PILES. TOUR LOOP ROAD IS POSTED FOR 5

TONS.

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 4290-002P

STRUCTURE IDENTIFICATION

(201) PARK: COLONIAL NATIONAL HISTORICAL PARK (1) STATE: ....................................... 513 - VIRGINIA (VA)

(202) STRUCTURE NAME: .......... BEAVERDAM CREEK BRIDGE (2) STATE HWY. AGENCY DIST:

(203) STRUCTURE KIND: ............1 - BRIDGE (3) COUNTY CODE: ........................ 199 - YORK

(204) STRUCTURE NUMBER: ..... 4290-002P (4) CITY/PLACE CODE:

(205) NPS REGION: .................... 3 - NORTHEAST (5) INVENTORY ROUTE:

(206) ROUTE CODE NUMBER: ... 500 (6) FEATURES INTERSECTED:....... BEAVERDAM CREEK

(207) ROAD SECTION NO: .......... 002P (7) FACILITY CARRIED: .................. YORKTOWN WEST TOUR RO

(208) NPS ROAD CLASS: ............ 1 - PRINCIPAL PARK ROAD (8) STATE STRUCTURE NO: .......... 4290002P0000000

(209) WITHIN NPS BNDRY?: ....... YES (9) LOCATION: ................................ 1.3 MILES WEST OF U.S. RO

(210) OPERATING UNIT: ............. PARK (10) INV. RTE. - MIN. VERT. CLR: .. 99.99 FT (99.99 M)

(211) PROJECT NO(S): ................ 3A2,4A2 (11) MILE POINT: ............................. 5.81 (KM PT 9.35)

(212) DRAWING NUMBERS: ....... NONE (27) YEAR BUILT:

(21) MAINTAINED BY: ................. 66 - NATIONAL PARK SERVICE (106) YEAR RECONSTRUCTED: .... N/A

(22) OWNER: ............................... 66 - NATIONAL PARK SERVICE (20) TOLL: ........................................ 3 - FREE ROAD

(37) HISTORICAL DESIGNATION: .. 5 - NOT ELIGIBLE

STRUCTURE DESCRIPTION, FOUNDATION, AND DECK TYPE

(43A) MAIN STR. MATERIAL: ..

(43B) MAIN STR. TYPE:

(45) NO. OF MAIN SPANS:

(48) MAX. SPAN LENGTH:

(49) STRUCTURE LENGTH:

(216A) ABUTMENT #1 FDN:

(216B) ABUTMENT #2 FDN:

(217A) PREDOM. PIER FDN.: ..

(217B) SECOND. PIER FDN: ...

(107) DECK TYPE:

7 - WOOD or TIMBER

02 - STRINGER/MULTI-BEAM or GIRDER

50.0 FT (15.2 M)

72.0 FT (21.9 M)

6 - N/A

6 - N/A

4 - PILE BENT

4 - PILE BENT

8 - WOOD OR TIMBER

(44A) APPR. STR. MATERIAL: ........ 0 - OTHER

(44B) APPR. STR. TYPE: ................ 00 - OTHER

(46) NO. OF APPROACH SPANS: .. 0

(108) WEAR SURFACE/PROTECT SYSTEM:

A) TYPE WEARING SURFACE: .. 0 - NONE

B) TYPE MEMBRANE: ................. 0 - NONE

C) TYPE PROTECTION: .............. 0 - NONE

(218) IS SALT USED?: ..................... YES

LOAD RATING AND POSTING

(31) DESIGN LOAD: ................. 2 - H15 (M13.5) (41) LOAD RESTRICTION: ......... P - POSTED FOR LOAD

(66) INVENTORY RATING: ...... 15.4 TONS (13.9 METRIC TONS) (70) BRIDGE POSTING: .............. 3 - POSTING REQUIRED

(64) OPERATING RATING: ...... 20.4 TONS (18.5 METRIC TONS)

INSPECTION DATES

(90) INSPECTION DATE: 6/15 (91) FREQ. OF INSP: 24 MONTHS (92 / 93) CRITICAL FEATURE INSPECTION (CFI):

(219) ADD. STUDIES NEEDED: N - 0 - NONE (A) FRACTURE CRITICAL: ... NO

INSP. EVERY: MONTHS - LAST INSP. : (220) SPECIAL STUDY TYPE: 0 - NONE

(B) UNDERWATER: .............. NO

(221) SPECIAL STUDY DATE: INSP. EVERY: MONTHS - LAST INSP. :

(C) SPECIAL INSPECTION: .. NO

INSP. EVERY: MONTHS - LAST INSP. :

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 4290-002P

GEOMETRY, TRAFFIC, AND NAVIGATIONAL DATA

(16) LATITUDE: ............................. 37°12'10.20" (51) CURB TO CURB WIDTH: ........... 16.0 FT (4.9 M)

(17) LONGITUDE: ......................... 76°31'12.60" (52) DECK WIDTH: ............................ 18.0 FT (5.5 M)

(19) DETOUR LENGTH: ............... 5 MI (8 KM) (32) APPR. ROADWAY WIDTH: ........ 14.0 FT (4.3 M)

(28A) LANES ON STRUCT: .......... 02 (213) APPR. PAVEMENT WIDTH: ..... 12.0 FT (3.7 M)

(28B) LANES UNDER STRUCT: ... 00 LEFT SHOULDER: .................. 1.0 FT (0.3 M)

(42A) SERVICE ON: ..................... 1 - HIGHWAY RIGHT SHOULDER: ................ 1.0 FT (0.3 M)

(42B) SERVICE UNDER: .............. 5 - WATERWAY (33) BRIDGE MEDIAN: ....................... 0 - NO MEDIAN

(29) AVG. DAILY TRAFFIC: .......... 270 (34) SKEW ANGLE: ............................ 0 °

(30) YEAR OF ADT: ...................... 2007 (35) DECK FLARE?: ........................... NO

(114) FUTURE ADT: ..................... 297 (47) TOTAL HORIZ. CLEARANCE: .... 16.0 FT (4.9 M)

(115) YEAR OF FUTURE ADT: ..... 2027 (50) SIDEWALKS:

(101) PARALLEL STRUCTURE: ... N - NONE LEFT : ...................................... 0.0 FT (0.0 M)

(38) NAVIGATION CONTROL?: ... 0 RIGHT : ................................... 0.0 FT (0.0 M)

(39) VERTICAL CLEARANCE: ...... 0.0 FT (0.0 M) (214) BRIDGE RAIL TYPE:

(40) HORIZ. CLEARANCE: ........... 0.0 FT (0.0 M) RAIL CONFIGURATION: ......... 4 - CURB-TYPE WHEEL GUAR

(111) ABUT. OR PIER PROT: ....... MATERIAL: .............................. 7 - TIMBER

DESIGN TYPE: ........................ 1 - CONTINUOUS RAIL LATERAL UNDERCLEARANCE:

(55) RIGHT: ....................... 0.0 FT (0.0 M) (215) BRIDGE RAIL HEIGHT: ............ 1.00 FT (0.30 M)

(56) LEFT: ......................... 0.0 FT (0.0 M) (53) MIN. VRT. CLEAR. OVER DECK: 99.99 FT (99.99 M)

(54) MIN. VRT. UNDERCLEARANCE: 0.00 FT (0.00 M)

CONDITION AND APPRAISAL DATA, PROPOSED IMPROVEMENTS, AND COST

(58) DECK:

(59) SUPERSTRUCTURE:

(60) SUBSTRUCTURE:

(61) CHANNEL:

(62) CULVERT: ........................... N

(222) APPROACHES:

(223) RETAINING WALL: ........... N

(36) TRAFFIC SAFETY FEAT: ... 0NNN

(75A) TYPE OF WORK:

(75B) WORK DONE BY:

(76) IMPROVEMENT LENGTH: ..

(67) STRUCTURAL EVALUATION:

(68) DECK GEOMETRY:

(69) UNDERCLEARANCES:

(71) WATERWAY ADEQUACY:

(72) APPROACH ALIGNMENT:

(113) SCOUR CRITICAL:

(225) PURPOSE OF IMPROVEMENT:

(226) PRIORITY OF IMPROVEMENT:

(227) MAINTENANCE COST:

(228) REHAB./RECONSTR. COST: ...

(229) CONSTRUCTION COST:

N

8 - Stable; scour above top of fo

2 - REHAB/RECONSTRUCTION

C - MODERATE

ADDITIONAL INFORMATION

(230) STRUCTURE HISTORY:

1985-JOINT REPAIR. 2011-PARTIAL DECK REPLACEMENT AT EAST END, PILE ENCAPSULATION AT EAST BENT.

(231) ADDITIONAL CONSIDERATIONS:

(330) ADDITIONAL CONFIG. INFO.:

APPENDIX STRUCTURE NO. 4290-002P

PHOTOGRAPHS STRUCTURE NO. 4290-002P

PHOTO #1 - LOOKING EAST

FLOW

PHOTO #2 - NORTH (UPSTREAM) SIDE

PHOTO #3 - GENERAL TOPSIDE VIEW LOOKING WEST

PHOTO #4 - TYPICAL DECAY OF DECK SURFACE, SOUTH SIDE NEAR

MIDSPAN OF CENTER SPAN SHOWN

PHOTO #5 - TYPICAL ABRASION OF DECK SURFACE, EAST SPAN NEAR

EAST END SHOWN

PHOTO #6 - TYPICAL CHECKING OF TIMBER LAMINATED CURBS;

SOUTH CURB NEAR MIDSPAN OF CENTER SPAN SHOWN; ALSO NOTE

TYPICAL VEGETATION GROWTH ON CURBS

PHOTO #7 - TYPICAL DECAY AT ENDS OF

CURBS; WEST END OF NORTH CURB SHOWN;

ALSO NOTE COLLISION DAMAGE

PHOTO #8 - GENERAL UNDERSIDE VIEW

LOOKING EAST, CENTER SPAN

PHOTO #9 - TYPICAL SEPARATION ALONG LAMINATIONS OF BEAMS,

SOUTH SIDE OF SOUTH BEAM IN CENTER SPAN SHOWN

PHOTO #10 - TYPICAL CHECKING OF TIMBER BEAMS, UNDERSIDE OF

CENTER BEAM IN CENTER SPAN SHOWN

PHOTO #11 - SPLINTER ON BOTTOM OF CENTER BEAM IN CENTER

SPAN

PHOTO #12 - GENERAL VIEW OF WEST BENT, EAST SIDE

PHOTO #13 - TYPICAL CHECKING OF TIMBER BENT CAPS, WEST SIDE

OF EAST BENT SHOWN; ALSO NOTE FIBERGLASS JACKET ON PILE #4

PHOTO #14 - SPLINTER IN EAST BENT CAP OVER PILE #3

PHOTO #15 - VOID IN TOP OF PILE #1 AT WEST

BENT

PHOTO #16 - TYPICAL CHECKING OF TIMBER

PILES, PILE #2 AT WEST BENT SHOWN

PHOTO #17 - UPSTREAM CHANNEL, LOOKING FROM BRIDGE

PHOTO #18 - DOWNSTREAM CHANNEL, LOOKING FROM BRIDGE

PHOTO #19 - GENERAL VIEW OF LOAD

POSTING ADVANCE WARNING AT BEGINNING

OF TOUR LOOP ROAD