2018_-_East_Fork_Cascade_Creek_Bridge_Inspection_Report.pdf

STRUCTURE SUMMARY STRUCTURE NO. 8800-013P

EAST FORK CASCADE CREEK BRIDGE INSPECTION DATE: 7/12/18

BRIDGE IDENTIFICATION AND DESCRIPTION

MAIN SPAN MATERIAL: ....... CONCRETE CONTINUOUS

MAIN SPAN TYPE: ............... SLAB

# OF BEAMS, MAIN SPAN: .. 1

DECK TYPE: ......................... CONCRETE CAST-IN-PLACE

WEARING SURFACE: .......... NONE

ABUT. FOUNDATIONS: ........ SPREAD FOOTING ON PILES

PIER FOUNDATION(S): ........ SPREAD FOOTING ON PILES

ABUTMENT / PIER MAT'L: ... CONCRETE

PROJ./PLAN REF. NO: ......... UNKNOWN / RG2434

NPS ROAD CLASS: .............. 1 - PRINCIPAL PARK ROAD

STRUCTURE HISTORY: ...... 2011-APPROACHES RESURFACED.

NO. OF MAIN SPANS:

NO. OF APPR. SPANS:

STRUCT. TOTAL LENGTH: ..

MAX. SPAN LENGTH:

DECK WIDTH:

CURB TO CURB WIDTH:

YEAR BUILT:

YEAR RECONSTRUCTED: ..

SKEW ANGLE:

FRACTURE CRITICAL:

140.0 FT (42.7 M)

55.0 FT (16.8 M)

39.7 FT (12.1 M)

26.0 FT (7.9 M)

N/A

12 °

NO

LOCATION

YOSEMITE NATIONAL PARK MILE POINT: ..................... 1.70 (KM PT 2.74)

STATE: ................................. CALIFORNIA LOCATION: 5.1 miles east from El Portal boundary line on CA Route 140 (El Portal Road). FACILITY CARRIED: ............ EL PORTAL ROAD

FEATURE INTERSECTED: .. EAST FORK CASCADE CREEK

STRUCTURE EVALUATION SUMMARY

This concrete slab bridge is in fair condition overall. Problems include widespread abrasion and cracking in the concrete deck surface and underside; minor vertical cracking of the abutments and piers; and moderate to severe decay of the timber railing. Other problems include isolated minor undermining of the west abutment and undermining of the northeast retaining wall base below a corrugated metal pipe.

Corrective measures should be taken as outlined in this report to prevent the possible development of more serious or costly problems in the future. To help improve motorist safety, consideration should also be given to installing an approach guardrail system meeting current safety standards.

INSPECTION TEAM: J. ANDERSON, D. CHRISTENSEN

CONDITION ASSESSMENT:

JEFFREY ANDERSON, P.E., FIELD TEAM LEADER 720-963-3384

REPORT REVIEW:

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

REPORT APPROVAL: DATE: 12/4/18

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

RECOMMENDATIONS AND ESTIMATED COSTS STRUCTURE NO. 8800-013P

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

B (Major) - Structure exhibits severe deterioration, presents a safety hazard, or is designated a high priority due to age and/or condition.

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.

ROUTINE MAINTENANCE QTY. UNIT UNIT

COST

PRELIM.

COST

ESTIMATE

ITEM

NO.

REHABILITATION/RECONSTRUCTION

(TYPICALLY NEEDED WITHIN 5 YEARS)

QTY. UNIT

UNIT

COST

PRELIM. COST

ESTIMATES

REHAB. RECONSTR.

S

S

$0

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 recommended actions will be combined with similar work being performed on other structures.

FIELD INSPECTION REPORT STRUCTURE NO. 8800-013P

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.

G N F N N N N N G

N G

G N N N N G G G F G N N

G N N N F G N

11.

10.

9.

8.

7.

6.

5.

4.

3.

2.

1.

12.

13.

14.

15.

16.

17.

18.

19.

58.1, 59.3 EXPOSED AGGREGATE THROUGHOUT TOP OF SLAB. EXTENSIVE

TRANSVERSE AND MAP CRACKING OF TOP OF SLAB THROUGHOUT.

FULL LENGTH LONGITUDINAL CRACK IN BOTTOM OF SLAB IN

CENTER SPAN WITH EFFLORESCENCE FROM CRACK TOWARD

PIERS. LONGITUDINAL CRACK IN BOTTOM OF SLAB OF NORTH

SPAN WITH EFFLORESCENCE FROM CRACK IN WEST HALF OF

SPAN. LIGHT SURFACE CRACKING OF BOTTOM OF SLAB IN CENTER

SPAN NEXT TO EAST PIER ON NORTH SIDE. LIGHT SURFACE

CRACKING OF BOTTOM OF SLAB IN WEST SPAN ON SOUTH SIDE.

MINOR TRANSVERSE CRACKING WITH EFFLORESCENCE ON

UNDERSIDE OF OVERHANGS; HEAVIER AT PIERS.

MINOR STAINING AT DRAINS.

58.2 MINOR SURFACE RUST ON JOINT ARMOR AT BOTH ENDS OF SLAB.

58.5 EXTENSIVE MAP AND TRANSVERSE CRACKING ON SIDEWALKS.

MINOR SPALL ON SOUTHEAST APPROACH SIDEWALK AT JOINT.

MINOR IMPACT DAMAGE ALONG WEST APPROACH CURBS.

58.6 MINOR TO MODERATE CHECKING OF TIMBER RAILS WITH

MODERATE TO SEVERE DECAY, MORE PROMINENT AT SOUTH

RAILING. MINOR DETERIORATION OF VERTICAL JOINT FILLER IN

PARAPETS.

58.7 MINOR GRAVEL ACCUMULATION ALONG CURBLINES HAS BEEN

SIGNIFICANTLY REDUCED. MODERATE PONDING IN NORTH

SHOULDER OF WEST APPROACH (UNABLE TO VERIFY DURING THIS

INSPECTION).

60.1,13 MINOR VERTICAL CRACKING OF ABUTMENT BREASTWALLS AND

PIER WALLS.

60.3 ELASTOMERIC BEARING MATERIAL AT NORTH END OF EAST

ABUTMENT IS DISPLACING AND SPLITTING.

N G G P G G

N

G

G

F

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 6

F G G F N

MED

SUFF

8 FT.

BOULDERS, STONES, SAND

222. APPROACHES 6

1. APPROACH SLABS

2. RELIEF JOINTS

3. APPROACH GUARDRAIL

4. SURFACING

5. EROSION

6. SETTLEMENT

7. SIGNS

8. ALIGNMENT

9. OTHER

N N N F G F F G N

223. RETAINING WALL 5

1. WALL

2. WEEP HOLES

3. FOUNDATION

4. EROSION AND/OR SCOUR

5. SETTLEMENT OR DEFLECTION

6. OTHER

F N N P P N

36. TRAFFIC AND SAFETY FEATURES

A. BRIDGE RAILINGS

B. TRANSITIONS

C. APPROACH GUARDRAILS

D. APPROACH GUARDRAIL ENDS

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.

60.6 TREES GROWING ALONG BACK OF NORTHWEST WINGWALL.

60.8 MINOR DETERIORATION OF VERTICAL JOINT FILLER.

60.9,17 VOID AT BASE OF WEST ABUTMENT; UP TO 7" DEEP NEAR NORTH

END; ABUTMENT IS ON PILES. MINOR EROSION AT END OF

SOUTHWEST WINGWALL. MINOR VOID (28" DEEP) AT BASE OF EAST

PIER, EAST FACE NEAR SOUTH END, NOT NOTED DURING THIS

INSPECTION.

60.13 GALVANIZED STEEL ARMOR ON NORTH SIDE OF PIER WALLS.

61.1 STREAM FLOWS AGAINST EAST ABUTMENT (CENTER AND SOUTH

SPANS DRY AT TIME OF INSPECTION).

61.2 SEE BRIDGE FILE FOR SCOUR EVALUATION.

61.3, 223.1,4,5

RETAINING WALL RUNS NORTH OF EAST ABUTMENT AND HELPS TO

CHANNELIZE FLOW. UNDERMINING (UP TO 2.8') OF WALL NEAR

CORRUGATED PIPE OUTFALL. MINOR DETERIORATION OF MORTAR

JOINTS ABOVE AREA OF UNDERMINING WITH MULTIPLE VOIDS.

STONES SETTLED AND DISPLACED JUST NORTH OF PIPE.

61.4 ABANDONED UTILITIES COVERED WITH CONCRETE REMAIN UNDER

BRIDGE. VEGETATION BEGINNING TO CONSTRICT DOWNSTREAM

CHANNEL. SAND BAR WITH VEGETATION AND DEBRIS AT

DOWNSTREAM END OF WEST PIER. TREES GROWING AGAINST

BRIDGE ALONG BOTH SIDES; OVERHANGING RAILING IN CENTER

SPAN. FALLEN TREE AT UPSTREAM END OF WEST PIER; TREES

GROWING AGAINST BRIDGE AND OVERHANGING RAILING WAS NOT

NOTED DURING THIS INSPECTION.

222.4 1"W TRANSVERSE CRACK IN EASTBOUND LANE AND ALLIGATOR

CRACKING OF WESTBOUND LANE OF EAST APPROACH. MINOR

TRANSVERSE CRACKING OF APPROACH ASPHALT AT WEST END.

ALLIGATOR CRACKING OF ASPHALT ALONG JOINT AT EAST END.

222.6 UP TO 1.5" HEIGHT DIFFERENTIAL BETWEEN SIDEWALKS AND

APPROACH SIDEWALKS. MINOR SETTLEMENT OF WEST APPROACH

PAVEMENT AT EXPANSION JOINT IN EASTBOUND LANE.

222.7 TYPE 3 OBJECT MARKERS AT BOTH CORNERS OF EAST APPROACH

AND SOUTH CORNER OF WEST APPROACH; MINOR IMPACT

DAMAGE TO NORTHWEST OBJECT MARKER. OBJECT MARKER AT

SOUTHEAST CORNER IS LEANING.

ADDITIONAL ITEM REFERENCE AND REMARKS

36.B,C,D NO APPROACH GUARDRAILS PRESENT.

STRUCTURE LOAD RATING STRUCTURE NO. 8800-013P

TRUCK TYPE

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

TONS METRIC TONS TONS METRIC TONS

H 15 14 26 24

HS 21 19 35 32

TYPE 3 19 17 31 28

TYPE 3S2 29 26 49 44

TYPE 3-3 36 33 61 55

DESIGN LOADING: HS20 (MS18)

CAPACITY MEETS OR EXCEEDS DESIGN LOAD

X CAPACITY IS LESS THAN DESIGN LOAD

X ORIGINAL LOAD RATING CALCULATION APPLICABLE

ORIGINAL LOAD RATING CALCULATION REVISED

DATE OF LOAD RATING CALCULATION: 6/15

LOAD RATING CONTROLLED BY: POSITIVE MOMENT

REMARKS: SEE BRIDGE FILE FOR LOAD RATING CALCULATIONS.

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 8800-013P

STRUCTURE IDENTIFICATION

(201) PARK: YOSEMITE NATIONAL PARK

(202) STRUCTURE NAME: .......... EAST FORK CASCADE CREEK BRIDGE

(203) STRUCTURE KIND: ............1 - BRIDGE

(204) STRUCTURE NUMBER: ..... 8800-013P

(205) NPS REGION: .................... 6 - PACIFIC WEST

(206) ROUTE CODE NUMBER: ... 16

(207) ROAD SECTION NO: ..........013P

(208) NPS ROAD CLASS: ............ 1 - PRINCIPAL PARK ROAD

(209) WITHIN NPS BNDRY?: .......YES

(210) OPERATING UNIT: ............. PARK

(211) PROJECT NO(S): ................UNKNOWN

(212) DRAWING NUMBERS: ....... RG2434

(21) MAINTAINED BY: ................. 66 - NATIONAL PARK SERVICE

(22) OWNER: ............................... 66 - NATIONAL PARK SERVICE

(1) STATE:

(2) STATE HWY. AGENCY DIST:

(3) COUNTY CODE:

(4) CITY/PLACE CODE:

(5) INVENTORY ROUTE:

(6) FEATURES INTERSECTED:

(7) FACILITY CARRIED:

(8) STATE STRUCTURE NO:

(9) LOCATION:

(10) INV. RTE. - MIN. VERT. CLR: ..

(11) MILE POINT:

(27) YEAR BUILT:

(106) YEAR RECONSTRUCTED:

(20) TOLL:

(37) HISTORICAL DESIGNATION: ..

069 - CALIFORNIA (CA)

043 - MARIPOSA

161000160

EAST FORK CASCADE CREE

EL PORTAL ROAD

8800013P0000000

5.1 miles east from El Po

99.99 FT (99.99 M)

1.70 (KM PT 2.74)

N/A

3 - FREE ROAD

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:

2 - CONCRETE CONTINUOUS

01 - SLAB

55.0 FT (16.8 M)

140.0 FT (42.7 M)

3 - SPREAD FOOTING ON PILES

3 - SPREAD FOOTING ON PILES

3 - SPREAD FOOTING ON PILES

3 - SPREAD FOOTING ON PILES

1 - CONCRETE CAST-IN-PLACE

(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?: ..................... NO

LOAD RATING AND POSTING

(31) DESIGN LOAD: ................. 5 - HS20 (MS18) (41) LOAD RESTRICTION: ......... A - OPEN, NO RESTRICTION

(66) INVENTORY RATING: ...... 21.0 TONS (19.1 METRIC TONS) (70) BRIDGE POSTING: .............. 5 - NO POSTING REQUIRED

(64) OPERATING RATING: ...... 35.0 TONS (31.8 METRIC TONS)

INSPECTION DATES

(90) INSPECTION DATE: 7/18 (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: 9/98 INSP. EVERY: MONTHS - LAST INSP. :

(C) SPECIAL INSPECTION: .. NO

INSP. EVERY: MONTHS - LAST INSP. :

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 8800-013P

GEOMETRY, TRAFFIC, AND NAVIGATIONAL DATA

(16) LATITUDE: ............................. 37°43'25.90"

(17) LONGITUDE: ......................... 119°42'42.90"

(19) DETOUR LENGTH: ............... 50 MI (80 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:

26.0 FT (7.9 M)

39.7 FT (12.1 M)

34.0 FT (10.4 M)

26.0 FT (7.9 M)

4.0 FT (1.2 M)

4.0 FT (1.2 M)

0 - NO MEDIAN

12 °

NO

26.0 FT (7.9 M)

5.0 FT (1.5 M)

5.0 FT (1.5 M)

2 - MOUNTED ON PARAPET

8 - TIMBER/OTHER

1 - CONTINUOUS RAIL

4.92 FT (1.50 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:

(36) TRAFFIC SAFETY FEAT: ... 1000

(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

5 - Stable; scour within limits of

2 - REHAB/RECONSTRUCTION

C - MODERATE

$1,000

$567,000

$0

ADDITIONAL INFORMATION

(230) STRUCTURE HISTORY:

2011-APPROACHES RESURFACED.

(231) ADDITIONAL CONSIDERATIONS:

(330) ADDITIONAL CONFIG. INFO.:

SPAN #1 & #3 - LENGTH 42'-6", SPAN #2 - LENGTH 55'; TYPE 201 (R/C SLAB)

https://119�42'42.90 https://37�43'25.90

APPENDIX STRUCTURE NO. 8800-013P

PHOTOGRAPHS STRUCTURE NO. 8800-013P

PHOTO #1 - LOOKING WEST TOWARD ARCH ROCK ENTRANCE

FLOW

PHOTO #2 - NORTH (UPSTREAM) SIDE

PHOTO #3 - DAMAGED OBJECT MARKER AT NORTHWEST CORNER

PHOTO #4 - TIPPED OBJECT MARKER AT SOUTHEAST CORNER

PHOTO #5 - 1"W TRANSVERSE CRACK IN EASTBOUND LANE AND

ALLIGATOR CRACKING OF WESTBOUND LANE OF EAST APPROACH

PHOTO #6 - UP TO 1.5" VERTICAL OFFSET BETWEEN APPROACH

SIDEWALK AND BRIDGE SIDEWALK AT SOUTHEAST CORNER

PHOTO #7 - GENERAL TOPSIDE VIEW LOOKING EAST

PHOTO #8 - EXTENSIVE ROT IN TIMBER RAILING MEMBERS ON SOUTH

SIDE

PHOTO #9 - EXPOSED AGGREGATE AND EXTENSIVE TRANSVERSE AND

MAP CRACKING OF SLAB THROUGHOUT, CENTER SPAN SHOWN

PHOTO #10 - GENERAL UNDERSIDE VIEW OF SLAB IN CENTER SPAN

PHOTO #11 - FULL LENGTH LONGITUDINAL CRACK IN BOTTOM OF SLAB

IN CENTER SPAN WITH EFFLORESCENCE FROM CRACK TOWARD

PIERS

PHOTO #12 - LONGITUDINAL CRACK IN BOTTOM OF SLAB OF NORTH

SPAN WITH EFFLORESCENCE FROM CRACK IN WEST HALF OF SPAN

PHOTO #13 - TRANSVERSE CRACKING OF SLAB OVERHANGS, NORTH

SIDE OVER WEST PIER SHOWN

PHOTO #14 - GENERAL VIEW OF EAST ABUTMENT

PHOTO #15 - CRACKING OF EAST ABUTMENT BREASTWALL

PHOTO #16 - DISPLACEMENT OF BEARING MATERIAL AT NORTH END

OF EAST ABUTMENT

PHOTO #17 - UNDERMINING OF WEST ABUTMENT, 3'L X 6" BACK

PHOTO #18 - GENERAL VIEW OF EAST PIER

PHOTO #19 - UNDERMINING OF NORTHEAST CORNER RETAINING

WALL

PHOTO #20 - UNDERMINING OF NORTHEAST CORNER RETAINING

WALL, UP TO 33" BACK

PHOTO #21 - GAPS IN MORTAR OF NORTHEAST RETAINING WALL, UP

TO 50" BACK

PHOTO #22 - LOOKING UPSTREAM

PHOTO #23 - LOOKING DOWNSTREAM