1430-001P Upper McDonald Lake Bridge Safety Inspection 2019.pdf

STRUCTURE SUMMARY STRUCTURE NO. 1430-001P

KELLY CAMP BRIDGE INSPECTION DATE: 9/9/19

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: .. 4 STRUCT. TOTAL LENGTH: .. 201.2 FT (61.3 M)

DECK TYPE: ......................... WOOD OR TIMBER MAX. SPAN LENGTH: .......... 70.3 FT (21.4 M)

WEARING SURFACE: .......... WOOD OR TIMBER DECK WIDTH: ...................... 18.4 FT (5.6 M)

ABUT. FOUNDATIONS: ........ PILE BENT CURB TO CURB WIDTH: ..... 14.2 FT (4.3 M)

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

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

PROJ./PLAN REF. NO: ......... UNKNOWN / RG1732 SKEW ANGLE: ..................... 0 °

NPS ROAD CLASS: .............. 2 - CONNECTOR ROAD FRACTURE CRITICAL: ........ NO

STRUCTURE HISTORY: ...... 2006 (EST) - STEEL CRUTCH BENTS INSTALLED AT CENTER AND WEST BENTS. 2012 - BEAM

#3 RETROFIT IN SPAN #3, NEW TIMBER WEARING SURFACE. 2013 - PILE #4 JACKETED AT

LOCATION

GLACIER NATIONAL PARK MILE POINT: ..................... 0.15 (KM PT 0.24)

STATE: ................................. MONTANA LOCATION: 11.3 miles northeast of U.S. Route 2 on Going-to-the-Sun Road, then 0.2 miles west on Upper FACILITY CARRIED: ............ NORTH LAKE MCDONALD ROAD Lake McDonald Road.

FEATURE INTERSECTED: .. MCDONALD CREEK

STRUCTURE EVALUATION SUMMARY

This glulam timber multi-beam bridge is in fair condition due to broken timber piles at the center and west bents.

Steel crutch bents, made up of pipe piles and channel sections, were installed in the past to mitigate this problem and appear to be functioning as intended. In addition, steel saddle retrofits have been installed on Beam #3 in Span #3 to address cracking and splitting of the beam, and appear to be functioning satisfactorily.

Other problems at this time include an obsolete railing system; severe erosion of the west upstream channel bank; an accumulation of drift in the channel and against Bents #1 and #2, and an accumulation of debris on the bearing seats.

Corrective measures should be taken as outlined in this report to prevent the possible development of more serious or costly problems in the future. It is also recommended that the timber bents, steel crutch bents, and steel nosing at the center bent be checked for damage following periods of high channel flow.

In view of the age of the structure, the relatively low calculated load capacity (see Page 5), and the high cost of rehabilitation, consideration should also be given to replacing this bridge.

INSPECTION TEAM: F. R. QUINONEZ, K. FOSTER

CONDITION ASSESSMENT:

FABRICIO R. QUINONEZ, PE, FIELD TEAM LEADER 360-619-7705

REPORT REVIEW:

MARCUS MILLER, P.E., BRIDGE INSPECTION ENGINEER 703-404-6252

REPORT APPROVAL: DATE: 5/7/20

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

FIELD INSPECTION REPORT STRUCTURE NO. 1430-001P

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 sec ion 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.

(GAS LINE)

G F N N N G N N F

G G

(SADDLE RETROFITS)

N G G G N N N N G G N N

N P 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 DECK UNDERSIDE DISCOLORED DUE TO ROADWAY RUNOFF.

58.2,3 PRIOR TO 2013 INSPECTION, ASPHALT WEARING SURFACE WAS

REMOVED AND REPLACED BY NEW 3” (NOMINAL) LONGITUDINAL

TIMBER PLANK WEARING SURFACE. PLANKING STOPS

APPROXIMATELY 10” SHORT OF CURBLINES.

58.5,6 MINOR TO MODERATE CHECKING OF TIMBER CURBS, SIDEWALKS,

AND RAILINGS. KNOT HOLES IN SEVERAL SIDEWALK PLANKS.

MINOR VEHICLE GOUGES IN SOUTH CURB.

58.7 EDGE BOARD BELOW SPACER BLOCKS FULLY EXPOSED DUE TO

REMOVAL OF ASPHALT WEARING SURFACE. EDGE BOARD

PREVENTS FREE DRAINAGE THROUGH CURB DRAINS; SECTIONS

OF EDGE BOARD HAVE BEEN PARTIALLY REMOVED TO AID WITH

DRAINAGE. MINOR DEBRIS ACCUMULATION BETWEEN TIMBER

WEARING SURFACE AND EDGE BOARD.

59.1 PREVIOUS INSPECTIONS NOTED SOUTH BEARING ANGLE FOR

BEAM #2 AT BENT #2 WAS NOT FLUSH WITH BEAM; COULD NOT

VERIFY DURING THIS INSPECTION.

59.2,11 TWELVE STEEL SADDLE RETROFITS INSTALLED TO UNDERSIDE OF

BEAM #3, SPAN #3 (FOUR BETWEEN EACH DIAPHRAGM LINE).

RETROFIT ADDRESSES PREVIOUSLY REPORTED 1/2"W

LONGITUDINAL CRACK AND UP TO 1/4"W SPLITS AND CHECKS IN

BEAM.

BEAMS DISCOLORED DUE TO ROADWAY RUNOFF. KNOTS MISSING

FROM TIMBER BEAMS AT ISOLATED LOCATIONS. MINOR TO

MODERATE CHECKING OF BEAMS #1-3 IN SPANS #2 AND #3, FULL

LENGTH BETWEEN INTERMEDIATE DIAPHRAGMS.

59.9 DEAD AND LIVE LOAD DEFLECTION NOTED IN PREVIOUS

INSPECTION REPORTS; COULD NOT VERIFY DURING THIS

INSPECTION.

60.2 GALVANIZED SHEETING AT TOP OF PILES AT BOTH ABUTMENTS.

G G F G F G

N

G

G

G

ITEM REFERENCE AND REMARKS

STREAM BED COMPOSITION : 9.

AVERAGE CLEAR OPENING 8.

NORMAL VELOCITY 7.

ADEQUACY OF OPENING 6.

OTHER 5.

WATERWAY OBSTRUCTIONS 4.

CHANNEL PROTECTION 3.

EROSION AND/OR SCOUR 2.

ALIGNMENT 1.

61. CHANNEL 5

G P N F N

MED

SUFF

14 FT.

COBBLES, BOULDERS

222. APPROACHES 6

1. APPROACH SLABS

2. RELIEF JOINTS

3. APPROACH GUARDRAIL

4. SURFACING

5. EROSION

6. SETTLEMENT

7. SIGNS

8. ALIGNMENT

9. OTHER (STEPS)

N N N G G G G F G

223. RETAINING WALL N

1. WALL

2. WEEP HOLES

3. FOUNDATION

4. EROSION AND/OR SCOUR

5. SETTLEMENT OR DEFLECTION

6. OTHER

36. TRAFFIC AND SAFETY FEATURES

A. BRIDGE RAILINGS

B. TRANSITIONS

C. APPROACH GUARDRAILS

D. APPROACH GUARDRAIL ENDS

N N N

TRAFFIC SAFETY RATING CODES

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

1 - Meets currently acceptable standards.

N - Not applicable or a safety feature is not required.

60.3 MINOR DEBRIS ACCUMULATION ON BEARING SEATS AT

ABUTMENTS; MODERATE AT ENDS OF WEST ABUTMENT CAP.

60.4 MINOR DECAY OF BULKHEAD TIMBERS. EAST TIMBER BACKWALL

DOES NOT EXTEND TO GROUNDLINE.

60.11, 61.2,3 SEVERE EROSION OF WEST UPSTREAM CHANNEL BANK AND

MODERATE EROSION OF WEST DOWNSTREAM CHANNEL BANK;

LARGE RIPRAP IN PLACE AT WEST ABUTMENT AND APPEARS

STABLE.

60.14 MINOR CHECKING OF TIMBER PILES; EXTERIOR OF PILES ARE SOFT

AT WATERLINE. PILE #4 AT BENT #1 REPAIRED WITH

STEEL/CONCRETE JACKET.

DOWNSTREAM PILE AT BENT#1 SPLIT AND SOUNDS HOLLOW AT

X-BRACE.

PILE #10 AT BENT #2 BROKEN DUE TO DRIFT IMPACT; PILE #5

PUSHED 20" SOUTH AT TOP.

PILE #2 AT BENT #3 BROKEN DUE TO DISPLACED RIPRAP.

STEEL CRUTCH BENTS INSTALLED IN THE PAST AT CENTER AND

WEST BENTS TO ADDRESS BROKEN PILES; CRUTCH BENTS

COMPRISED OF 8" STEEL PILES AND CHANNEL SECTIONS. STEEL

NOSING ALSO IN PLACE AT UPSTREAM END OF CENTER BENT;

TIMBER SHEATHING PLANKS ALONG SIDES (UNABLE TO INSPECT

SOME PILES DUE TO SHEATHING).

61.2 SEE BRIDGE FILE FOR SCOUR EVALUATION.

61.4 MODERATE FLOOD DEBRIS ON EAST SIDE OF BENT #1 AND

UPSTREAM END OF BENT #2. MINOR ACCUMULATION OF FLOOD

DEBRIS IN DOWNSTREAM CHANNEL, 30' FROM BRIDGE.

222.7 R12-1 "WEIGHT LIMIT 15 TONS" AT BOTH APPROACHES. TYPE 3

REFLECTIVE OBJECT MARKERS AT ALL FOUR CORNERS OF BRIDGE.

"ONE LANE BRIDGE" AND "YIELD TO HORSES" SIGNS POSTED AT

BOTH APPROACHES.

222.8 ROADWAY CURVES AT BRIDGE APPROACHES.

222.9 STEPS AT BOTH ENDS OF SIDEWALK IN GOOD CONDITION.

ADDITIONAL ITEM REFERENCE AND REMARKS

36.A BRIDGE RAILINGS ARE OF INADEQUATE STRENGTH AND STIFFNESS TO SAFELY REDIRECT AN ERRANT VEHICLE, AS PER CURRENT AASHTO SPECIFICATIONS FOR TRAFFIC BARRIERS. RAILING HEIGHT OF 3'-0" DOES NOT MEET

AASHTO MINIMUM HEIGHT SPECIFICATION OF 3'-6" FOR PEDESTRIAN/BICYCLE BARRIERS.

STRUCTURE LOAD RATING STRUCTURE NO. 1430-001P

TRUCK TYPE

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

TONS METRIC TONS TONS METRIC TONS

H 6 5 15 14

HS 8 7 19 17

TYPE 3 8 7 18 16

TYPE 3S2 10 9 24 22

TYPE 3-3 12 11 29 26

DESIGN LOADING: HS15 (MS13.5)

CAPACITY MEETS OR EXCEEDS DESIGN LOAD

X CAPACITY IS LESS THAN DESIGN LOAD

ORIGINAL LOAD RATING CALCULATION APPLICABLE

X ORIGINAL LOAD RATING CALCULATION REVISED

DATE OF LOAD RATING CALCULATION: 1/16

LOAD RATING CONTROLLED BY: BEAM MOMENT CAPACITY

REMARKS: SEE BRIDGE FILE FOR LOAD RATING CALCULATIONS.

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 1430-001P

STRUCTURE IDENTIFICATION

(201) PARK: GLACIER NATIONAL PARK (1) STATE: ....................................... 308 - MONTANA (MT)

(202) STRUCTURE NAME: .......... KELLY CAMP BRIDGE (2) STATE HWY. AGENCY DIST:

(203) STRUCTURE KIND: ............1 - BRIDGE (3) COUNTY CODE: ........................ 029 - FLATHEAD

(204) STRUCTURE NUMBER: ..... 1430-001P (4) CITY/PLACE CODE:

(205) NPS REGION: .................... 1 - INTERMOUNTAIN (5) INVENTORY ROUTE:

(206) ROUTE CODE NUMBER: ... 202 (6) FEATURES INTERSECTED:....... MCDONALD CREEK

(207) ROAD SECTION NO: ..........001P (7) FACILITY CARRIED: .................. NORTH LAKE MCDONALD RO

(208) NPS ROAD CLASS: ............ 2 - CONNECTOR ROAD (8) STATE STRUCTURE NO: .......... 1430001P0000000

(209) WITHIN NPS BNDRY?: .......YES (9) LOCATION: ................................ 11.3 miles northeast of U

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

(211) PROJECT NO(S): ................UNKNOWN (11) MILE POINT: .............................0.15 (KM PT 0.24)

(212) DRAWING NUMBERS: ....... RG1732 (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

70.3 FT (21.4 M)

201.2 FT (61.3 M)

4 - PILE BENT

4 - PILE BENT

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: .. 7 - WOOD OR TIMBER

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

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

(218) IS SALT USED?: ..................... NO

LOAD RATING AND POSTING

(31) DESIGN LOAD: ................. 3 - HS15 (MS13.5) (41) LOAD RESTRICTION: ......... P - POSTED FOR LOAD

(66) INVENTORY RATING: ...... 8.0 TONS (7.3 METRIC TONS) (70) BRIDGE POSTING: .............. 1 - POSTING REQUIRED

(64) OPERATING RATING: ...... 19.0 TONS (17.2 METRIC TONS)

INSPECTION DATES

(90) INSPECTION DATE: 9/19 (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: 5 - SCOUR

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

(221) SPECIAL STUDY DATE: 5/09 INSP. EVERY: MONTHS - LAST INSP. :

(C) SPECIAL INSPECTION: .. NO

INSP. EVERY: MONTHS - LAST INSP. :

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 1430-001P

GEOMETRY, TRAFFIC, AND NAVIGATIONAL DATA

(16) LATITUDE: ............................. 48°38'06.90"

(17) LONGITUDE: ......................... 113°51'59.90"

(19) DETOUR LENGTH: ............... 99 MI (159 KM)

(28A) LANES ON STRUCT:

(28B) LANES UNDER STRUCT: ... 00

(42A) SERVICE ON: ..................... 5 - HIGHWAY-PEDESTRIAN

(42B) SERVICE UNDER: .............. 5 - WATERWAY

(29) AVG. DAILY TRAFFIC:

(30) YEAR OF ADT:

(114) FUTURE ADT:

(115) YEAR OF FUTURE ADT:

(101) PARALLEL STRUCTURE: ... N - NONE

(38) NAVIGATION CONTROL?: ... 0

(39) VERTICAL CLEARANCE: ...... 0.0 FT (0.0 M)

(40) HORIZ. CLEARANCE: ........... 0.0 FT (0.0 M)

(111) ABUT. OR PIER PROT:

LATERAL UNDERCLEARANCE:

(55) RIGHT: ....................... 0.0 FT (0.0 M)

(56) LEFT: ......................... 0.0 FT (0.0 M)

(51) CURB TO CURB WIDTH:

(52) DECK WIDTH:

(32) APPR. ROADWAY WIDTH:

(213) APPR. PAVEMENT WIDTH:

LEFT SHOULDER:

RIGHT SHOULDER:

(33) BRIDGE MEDIAN:

(34) SKEW ANGLE:

(35) DECK FLARE?:

(47) TOTAL HORIZ. CLEARANCE:

(50) SIDEWALKS:

LEFT :

RIGHT :

(214) BRIDGE RAIL TYPE:

RAIL CONFIGURATION:

MATERIAL:

DESIGN TYPE:

(215) BRIDGE RAIL HEIGHT:

(53) MIN. VRT. CLEAR. OVER DECK:

(54) MIN. VRT. UNDERCLEARANCE:

14.2 FT (4.3 M)

18.4 FT (5.6 M)

25.3 FT (7.7 M)

17.3 FT (5.3 M)

4.0 FT (1.2 M)

4.0 FT (1.2 M)

0 - NO MEDIAN

0 °

NO

14.2 FT (4.3 M)

3.0 FT (0.9 M)

0.0 FT (0.0 M)

1 - FULL HEIGHT (NO PARAPE

7 - TIMBER

3 - SIMPLE RAIL (joints at each

3.08 FT (0.94 M)

99.99 FT (99.99 M)

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: ..............35 - GENERAL REHAB

(75B) WORK DONE BY: .............1 - CONTRACT

(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

5 - Stable; scour within limits of

2 - REHAB/RECONSTRUCTION

D - MINOR

$0

ADDITIONAL INFORMATION

(230) STRUCTURE HISTORY:

2006 (EST) - STEEL CRUTCH BENTS INSTALLED AT CENTER AND WEST BENTS. 2012 - BEAM #3 RETROFIT IN SPAN #3, NEW TIMBER

WEARING SURFACE. 2013 - PILE #4 JACKETED AT EAST BENT.

(231) ADDITIONAL CONSIDERATIONS:

(330) ADDITIONAL CONFIG. INFO.:

Span #1 - #4 - Length 30', 70', 70', & 30'; Type 702 (Glu-Lam Girders) 3-each

APPENDIX STRUCTURE NO. 1430-001P

PHOTOGRAPHS STRUCTURE NO. 1430-001P

PHOTO #1 - LOOKING EAST TOWARD GOING-TO-THE-SUN ROAD

FLOW

PHOTO #2 - SOUTH (DOWNSTREAM) SIDE

PHOTO #3 - GENERAL TOPSIDE VIEW, LOOKING EAST

PHOTO #4 - TYPICAL VIEW OF CURB AND RAILING ON NORTH SIDE OF

BRIDGE

PHOTO #5 - TYPICAL VIEW OF SIDEWALK AND RAILING ON SOUTH SIDE

OF BRIDGE

PHOTO #6 - TYPICAL CHECKING OF TIMBER RAIL POSTS, POST ON

NORTH SIDE SHOWN

PHOTO #7 - GENERAL UNDERSIDE VIEW OF SPAN #1 LOOKING WEST

PHOTO #8 - TYPICAL CONDITION OF DECK UNDERSIDE, UPSTREAM

BAY IN SPAN #1 LOOKING TOWARD BENT #1 SHOWN

PHOTO #9 - GENERAL UNDERSIDE VIEW UNDER WALKWAY IN SPAN #1,

LOOKING WEST

PHOTO #10 - LOCKED STEEL BOX MOUNTED ON INTERIOR FACE OF

BEAM #4 IN SPAN #1, LOOKING WEST

PHOTO #11 - GENERAL UNDERSIDE VIEW OF SPAN #2 LOOKING WEST

PHOTO #12 - GENERAL UNDERSIDE VIEW OF SPAN #3 LOOKING WEST

PHOTO #13 - TYPICAL SADDLE RETROFITS INSTALLED ON UNDERSIDE

OF BEAM #3 IN SPAN #3

PHOTO #14 - GENERAL VIEW OF EAST ABUTMENT

PHOTO #15 - GENERAL VIEW OF UPSTREAM SIDE OF SPAN #1,

LOOKING DOWNSTREAM

PHOTO #16 - GENERAL VIEW OF BENT #1;NOTE PILE JACKET ON PILE

#4

PHOTO #17 - GENERAL CONDITION OF DOWNSTREAM PILE OF BENT

#1; NOTE CHECKS AND POSSIBLE DECAY NEAR CROSS BRACING

PHOTO #18 - DOWNSTREAM PILE OF BENT #1, LOOKING NORTH; NOTE

POSSIBLE INTERNAL DECAY AT RULE EXTENDING UPWARD SEVERAL

FEET

PHOTO #19 - DOWNSTREAM PILE IN BENT #1, LOOKING NORTH; NOTE

FOLDING RULE INSERTED 4 INCHES INTO CHECK

PHOTO #20 - GENERAL VIEW OF UPSTREAM SIDE SPAN #2, LOOKING

SOUTH

PHOTO #21 - GENERAL VIEW OF BENT #2, WEST FACE SHOWN

PHOTO #22 - GENERAL VIEW OF BENT #2, EAST FACE SHOWN

PHOTO #23 - GENERAL VIEW OF DOWNSTREAM SIDE OF BENT #2

PHOTO #24 - GENERAL VIEW OF UPSTREAM END OF BENT #2

PHOTO #25 - DAMAGE TO BENT #2 TIMBER SHEATHING PLANKS, TOP

OF NORTHEAST CORNER SHOWN

PHOTO #26 - DAMAGE TO BENT #2 TIMBER SHEATHING PLANKS,

CLOSE-UP OF NORTHEAST CORNER SHOWN

PHOTO #27 - GENERAL VIEW OF DOWNSTREAM END OF BENT #2

PHOTO #28 - GENERAL VIEW OF BENT #3, LOOKING WEST

PHOTO #29 - GENERAL VIEW OF DOWNSTREAM SIDE OF BENT #3,

LOOKING NORTH

PHOTO #30 - GENERAL VIEW OF WEST SIDE OF BENT #3, LOOKING

UPSTREAM; NOTE LOG STUCK BETWEEN PILES

PHOTO #31 - GENERAL VIEW OF WEST ABUTMENT

PHOTO #32 - EAST APPROACH

PHOTO #33 - WEST APPROACH

PHOTO #34 - ONE LANE BRIDGE SIGN AT WEST APPROACH

PHOTO #35 - WEIGHT LIMIT SIGN AT WEST APPROACH

PHOTO #36 - EROSION OF NORTHWEST CHANNEL BANK.

PHOTO #37 - DEBRIS ACCUMULATION ON RIPRAP PROTECTION AT

BENT #3, NORTH END

PHOTO #38 - UPSTREAM CHANNEL, VIEW FROM DECK SHOWN

PHOTO #39 - DOWNSTREAM CHANNEL, VIEW FROM DECK SHOWN