Report_Bridge_Inspection_5570-449P.pdf

BRIDGE INSPECTION REPORT

WILKINS ROAD BRIDGE

NATCHEZ TRACE PARKWAY OVER WILKINS ROAD & WILKIE BRANCH

NATCHEZ TRACE PARKWAY

LN

STRUCTURE NO. 5570-449P

INSPECTION TYPE: ROUTINE

INSPECTION DATE: 3/18/13

Report prepared by: WU

MILE POINT: 429.30

Federal Highway Administration KILOMETER POINT: 690.87 Federal Lands Bridge Office Bridge Inspection and Management Program 21400 Ridgetop Circle Sterling, Virginia 20166 http://www.efl.fhwa.dot.gov/FLHBO/BIP http://www.efl.fhwa.dot.gov/FLHBO/BIP

STRUCTURE SUMMARY STRUCTURE NO. 5570-449P

WILKINS ROAD BRIDGE INSPECTION DATE: 3/18/13

BRIDGE IDENTIFICATION AND DESCRIPTION

MAIN SPAN MATERIAL:

MAIN SPAN TYPE:

# OF BEAMS, MAIN SPAN: ..

DECK TYPE:

WEARING SURFACE:

ABUT. FOUNDATIONS:

PIER FOUNDATION(S):

ABUTMENT / PIER MAT'L: ...

PROJ./PLAN REF. NO:

NPS ROAD CLASS:

STRUCTURE HISTORY:

P/S CONCRETE CONTINUOUS

STRINGER/MULTI-BEAM or GIRDER

CONCRETE CAST-IN-PLACE

BITUMINOUS

SPREAD FOOTING ON PILES

SPREAD FTG ON BEARING MAT'L

CONCRETE

1B5 / 25

1 - PRINCIPAL PARK ROAD

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:

210.8 FT (64.3 M)

90.2 FT (27.5 M)

37.0 FT (11.3 M)

34.2 FT (10.4 M)

N/A

0 °

NO

LOCATION

NATCHEZ TRACE PARKWAY MILE POINT: ..................... 429.30 (KM PT 690.87)

STATE: ................................. TENNESSEE LOCATION: 0.65 MILES TO TN ROUTE 46

FACILITY CARRIED: ............ NATCHEZ TRACE PARKWAY

FEATURE INTERSECTED: .. WILKINS ROAD & WILKIE BRANCH

STRUCTURE EVALUATION SUMMARY

This prestressed concrete continuous multi-girder bridge is in good condition overall with only minor problems. These include numerous bearing anchor bolt nuts missing, one anchor bolt missing from Bearing #1 at the north abutment, and a moderate debris accumulation in both of the expansion joints.

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

INSPECTION TEAM: D.K. JOHNSON, J.S. SMITHDEAL (CLARK NEXSEN)

CONDITION ASSESSMENT:

D. KEITH JOHNSON, P.E., FIELD TEAM LEADER

REPORT REVIEW:

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

REPORT APPROVAL: DATE: 8/1/13

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

RECOMMENDATIONS AND ESTIMATED COSTS STRUCTURE NO. 5570-449P

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.

D226 PRIORITY OF IMPROVEMENT

ITEM

NO.

MAINTENANCE RECOMMENDATIONS

(GENERALLY NOT FLHP ELIGIBLE)

QTY. UNIT COST

UNIT

ESTIMATE

COST

PRELIM.

59.1 REPLACE BEARING ANCHOR BOLT NUTS AT BOTH ABUTMENTS. 13 EA

58.2 CLEAN AND RESEAL BOTH EXPANSION JOINTS. 70 LF

59.1 REPLACE MISSING ANCHOR BOLT FROM BEARING #1 AT NORTH ABUTMENT. 1 EA

58.2 REMOVE DEBRIS FROM EXPANSION JOINTS. 1 LS

58.10, 60.12,19

REMOVE VINE GROWTH FROM DECK OVERHANG, ABUTMENTS, SLOPE

PROTECTIONS, AND PIERS.

1 LS

PRELIM. MAINTENANCE TOTAL :

ITEM

NO.

REHABILITATION/RECONSTRUCTION

(TYPICALLY NEEDED WITHIN 5 YEARS)

QTY. UNIT

UNIT

COST ESTIMATES

PRELIM. COST

REHAB. RECONSTR.

PRELIM. REHABILITATION/RECONSTRUCTION TOTAL :

COST ESTIMATE SUMMARY

PRELIM. MAINTENANCE TOTAL:

PRELIM. REHABILITATION TOTAL:

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. 5570-449P

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

N NOT APPLICABLE

9 EXCELLENT CONDITION

8 VERY GOOD CONDITION - no problems noted.

7 GOOD CONDITION - some minor problems.

6 SATISFACTORY CONDITION - structural elements show some minor deterioration.

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

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

3 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.

2 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.

1 “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.

0 FAILED CONDITION - out of service; beyond corrective action.

CONDITION RATING CODE EQUIVALENTS FOR SUB-ELEMENTS

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

58. DECK 7

1. DECK SLAB G

2. EXPANSION JOINTS F

3. WEARING SURFACE G

4. RIDEABILITY G

5. CURBS, SIDEWALKS, AND MEDIAN G

6. PARAPETS AND/OR RAILINGS G

7. DRAINS AND DRAINAGE G

8. UTILITIES N

9. DEFLECTION AND/OR VIBRATION G

10. OTHER (VEGETATION) G

59. SUPERSTRUCTURE 7

1. BEARING DEVICES

2. GIRDERS OR BEAMS

3. ARCH(ES) OR SLAB(S)

4. FLOOR BEAMS AND STRINGERS

5. TRUSSES

6. DIAPHRAGMS AND BRACING

7. PAINT

8. FASCIA(E)

9. DEFLECTION AND/OR VIBRATION

10. ALIGNMENT

11. OTHER

60. SUBSTRUCTURE

ABUTMENTS

1. BREASTWALLS OR COLUMNS

2. PILE BENTS

3. CAPS AND/OR BEARING SEATS

4. BACKWALLS AND/OR BULKHEADS

5. FOUNDATIONS

6. WINGWALLS

7. WEEP HOLES

8. EXPANSION JOINTS

9. EROSION AND/OR SCOUR

10. SETTLEMENT OR DEFLECTION

11. SLOPE PROTECTION

12. OTHER (VEGETATION)

PIER(S)

13. WALLS AND/OR COLUMNS

14. PILE BENTS

15. CAPS AND/OR BEARING SEATS

16. FOUNDATIONS

17. EROSION AND/OR SCOUR

18. SETTLEMENT OR DEFLECTION

19. OTHER (VEGETATION)

F G N N N G N N G G N

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

G N G G F G G

58.1

58.2

58.3

58.5,6

58.7

58.10, 60.12,19

59.1

59.6

60.1,4

60.6

ITEM REFERENCE AND REMARKS

MINOR TRANSVERSE CRACKING WITH EFFLORESCENCE ON DECK

UNDERSIDE AND OVERHANGS.

MODERATE LEAKAGE ONTO BOTH ABUTMENTS FROM EXPANSION

JOINTS. MODERATE ACCUMULATION OF DEBRIS IN BOTH

EXPANSION JOINTS.

MINOR LONGITUDINAL CRACKING OF WEARING SURFACE ALONG

CENTERLINE. ROADWAY STRIPING CRACKED AND FADED

THROUGHOUT. MINOR DETERIORATION OF ASPHALT AT EXPANSION

JOINTS; ASPHALT IS UP TO 1" HIGHER THAN JOINT.

MINOR VERTICAL, TRANSVERSE, AND RANDOM CRACKING OF

CURBS AND RAILINGS. MINOR DELAMINATION OF EAST RAIL,

SOUTH SPAN.

VEGETATION ALONG EAST CURBLINE.

MINOR VINE GROWTH ALONG WEST DECK OVERHANG, NORTH

SPAN AND ON NORTH ABUTMENT, BOTH ABUTMENT SLOPES, AND

BOTH PIERS.

MINOR RUSTING OF BEARING SOLE PLATES WITH SEVEN ANCHOR

BOLT NUTS MISSING AT SOUTH ABUTMENT AND SIX ANCHOR BOLT

NUTS MISSING AT NORTH ABUTMENT. ONE ANCHOR BOLT MISSING

FROM BEARING #1 AT NORTH ABUTMENT.

MINOR CRACKING AND DELAMINATION DEVELOPING INTO SPALLS

ON CLOSURE DIAPHRAGMS OVER PIERS ALONG GIRDER EDGES IN

SEVERAL LOCATIONS.

MINOR VERTICAL CRACKING IN BREASTWALLS AND BACKWALLS.

MINOR RANDOM CRACKING WITH EFFLORESCENCE ON ALL

WINGWALLS.

FIELD INSPECTION REPORT STRUCTURE NO. 5570-449P

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 8

G G N G N

MED

SUFF

18 FT.

SILT

222. APPROACHES 7

OTHER 9.

ALIGNMENT 8.

SIGNS 7.

SETTLEMENT 6.

EROSION 5.

SURFACING 4.

APPROACH GUARDRAIL 3.

RELIEF JOINTS 2.

1. APPROACH SLABS N

N N G G G G G N

223. RETAINING WALL N

OTHER 6.

SETTLEMENT OR DEFLECTION 5.

EROSION AND/OR SCOUR 4.

FOUNDATION 3.

WEEP HOLES 2.

1. WALL

36. TRAFFIC AND SAFETY FEATURES

APPROACH GUARDRAIL ENDS D.

APPROACH GUARDRAILS C.

TRANSITIONS B.

BRIDGE RAILINGSA. 1

N N N

60.11 ABUTMENT SLOPES PROTECTED WITH RIPRAP.

60.15 EXPOSED AND RUSTED CHAIR BARS ON UNDERSIDE OF PIER CAP

AT BOTH PIERS.

60.17 MINOR EROSION AND PONDING ON SOUTH SIDE OF NORTH PIER;

TOP OF FOOTING EXPOSED.

222.4 MINOR TRANSVERSE CRACKING OF APPROACH PAVEMENT. MINOR

LONGITUDINAL CRACKING OF SOUTH APPROACH PAVEMENT OVER

APPROACH SLAB.

222.7 TYPE 3 REFLECTIVE OBJECT MARKER TAPE AT CORNERS OF

STRUCTURE.

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. 5570-449P

TRUCK TYPE

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

TONS METRIC TONS TONS METRIC TONS

H 15 14 25 23

HS 21 19 35 32

TYPE 3 20 18 34 31

TYPE 3S2 25 23 41 37

TYPE 3-3 28 25 46 42

DESIGN LOADING: H15 (M13.5)

X CAPACITY MEETS OR EXCEEDS DESIGN LOAD

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: RATING IS BASED ON DESIGN LOAD OF STRUCTURE.

A

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 5570-449P

STRUCTURE IDENTIFICATION

(201) PARK: NATCHEZ TRACE PARKWAY (1) STATE: ....................................... 474 - TENNESSEE (TN)

(202) STRUCTURE NAME: .......... WILKINS ROAD BRIDGE (2) STATE HWY. AGENCY DIST:

(203) STRUCTURE KIND: ............ 1 - BRIDGE (3) COUNTY CODE: ........................ 187 - WILLIAMSON

(204) STRUCTURE NUMBER: ..... 5570-449P (4) CITY/PLACE CODE:

(205) NPS REGION: .................... 4 - SOUTHEAST (5) INVENTORY ROUTE:

(206) ROUTE CODE NUMBER: ... 1 (6) FEATURES INTERSECTED:....... WILKINS ROAD & WILKIE BR

(207) ROAD SECTION NO: .......... 449P (7) FACILITY CARRIED: .................. NATCHEZ TRACE PARKWAY

(208) NPS ROAD CLASS: ............ 1 - PRINCIPAL PARK ROAD (8) STATE STRUCTURE NO: .......... 5570449P0000000

(209) WITHIN NPS BNDRY?: ....... YES (9) LOCATION: ................................ 0.65 MILES TO TN ROUTE 46

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

(211) PROJECT NO(S): ................ 1B5 (11) MILE POINT: ............................. 429.30 (KM PT 690.87)

(212) DRAWING NUMBERS: ....... 25 (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:

6 - P/S CONCRETE CONTINUOUS

02 - STRINGER/MULTI-BEAM or GIRDER

90.2 FT (27.5 M)

210.8 FT (64.3 M)

3 - SPREAD FOOTING ON PILES

3 - SPREAD FOOTING ON PILES

2 - SPREAD FTG ON BEARING MAT'L

2 - SPREAD FTG ON BEARING MAT'L

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: .. 6 - BITUMINOUS

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

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

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

LOAD RATING AND POSTING

(31) DESIGN LOAD: ................. 2 - H15 (M13.5) (41) LOAD RESTRICTION: ......... R - POSTED (OTHER)

(66) INVENTORY RATING: ...... 21.0 TONS (19.0 METRIC TONS) (70) BRIDGE POSTING: .............. 4 - POSTING REQUIRED

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

INSPECTION DATES

(90) INSPECTION DATE: 3/13 (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. 5570-449P

GEOMETRY, TRAFFIC, AND NAVIGATIONAL DATA

(51) CURB TO CURB WIDTH: ........... 34.2 FT (10.4 M)

(16) LATITUDE: ............................. 35°53'38.70"

(17) LONGITUDE: ......................... 87°00'56.90"

(19) DETOUR LENGTH: ............... 2 MI (3 KM)

(28A) LANES ON STRUCT:

(28B) LANES UNDER STRUCT: ... 02

(42A) SERVICE ON: ..................... 1 - HIGHWAY

(42B) SERVICE UNDER: .............. 6 - HIGHWAY-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?: ... N

(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: ....................... 18.0 FT (5.5 M)

(56) LEFT: ......................... 0.0 FT (0.0 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: ... 1NNN

(75A) TYPE OF WORK:

(75B) WORK DONE BY:

(76) IMPROVEMENT LENGTH: ..

(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:

37.0 FT (11.3 M)

34.0 FT (10.4 M)

22.0 FT (6.7 M)

6.0 FT (1.8 M)

6.0 FT (1.8 M)

0 - NO MEDIAN

0 °

NO

34.2 FT (10.4 M)

0.0 FT (0.0 M)

0.0 FT (0.0 M)

1 - FULL HEIGHT (NO PARAPE

1 - CONCRETE

1 - CONTINUOUS RAIL

2.58 FT (0.79 M)

99.99 FT (99.99 M)

15.92 FT (4.85 M)

(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:

8 - Stable; scour above top of fo

1 - MAINTENANCE

D - MINOR

$0

$0

ADDITIONAL INFORMATION

(230) STRUCTURE HISTORY:

(231) ADDITIONAL CONSIDERATIONS:

(330) ADDITIONAL CONFIG. INFO.:

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APPENDIX STRUCTURE NO. 5570-449P

PHOTOGRAPHS STRUCTURE NO. 5570-449P

PHOTO #1 - LOOKING SOUTHBOUND TOWARD TUPELO

FLOW

PHOTO #2 - EAST (DOWNSTREAM) SIDE

PHOTO #3 - GENERAL TOPSIDE VIEW

LOOKING NORTH

PHOTO #4 - TYPICAL ACCUMULATION OF

DEBRIS IN BOTH EXPANSION JOINTS;

EXPANSION JOINT OVER SOUTH ABUTMENT

SHOWN

PHOTO #5 - TYPICAL DETERIORATION OF

ROADWAY STRIPING; CENTER SPAN SHOWN

PHOTO #6 - TYPICAL TRANSVERSE CRACKING

OF APPROACH PAVEMENT; SOUTH APPROACH

PHOTO #7 - TYPICAL VERTICAL, TRANSVERSE, AND RANDOM

CRACKING OF RAILINGS AND CURBS; WEST SIDE, CENTER SPAN

PHOTO #8 - DELAMINATION OF EAST RAIL, SOUTH SPAN

PHOTO #9 - GENERAL UNDERSIDE VIEW LOOKING SOUTH, CENTER

SPAN

PHOTO #10 - TYPICAL TRANSVERSE CRACKING WITH

EFFLORESCENCE ON DECK UNDERSIDE; CENTER SPAN SHOWN

PHOTO #11 - TYPICAL RUSTING OF BEARING SOLE PLATES; NORTH

ABUTMENT, BEARING #3 SHOWN; ALSO NOTE MISSING ANCHOR BOLT

NUT

PHOTO #12 - ONE ANCHOR BOLT MISSING FROM BEARING #1 AT

NORTH ABUTMENT

PHOTO #13 - TYPICAL CRACKING AND

DELAMINATION DEVELOPING INTO SPALLS ON

CLOSURE DIAPHRAGMS OVER PIERS ALONG

GIRDER EDGES IN SEVERAL LOCATIONS;

WEST DIAPHRAGM, SOUTH SPAN, SOUTH PIER

SHOWN

PHOTO #14 - GENERAL VIEW OF NORTH

ABUTMENT; NOTE TYPICAL VINE GROWTH ON

SLOPE PROTECTION AND ABUTMENTS

PHOTO #15 - TYPICAL LEAKAGE ONTO BOTH

ABUTMENTS FROM EXPANSION JOINTS; EAST

SIDE, NORTH ABUTMENT SHOWN

PHOTO #16 - TYPICAL VERTICAL CRACKING IN

BREASTWALLS; EAST END OF NORTH

ABUTMENT BREASTWALL SHOWN

PHOTO #17 - TYPICAL RANDOM CRACKING WITH EFFLORESCENCE ON

ALL WINGWALLS; NORTHEAST WINGWALL SHOWN; NOTE VINE

GROWTH ON WINGWALL

PHOTO #18 - GENERAL VIEW OF SOUTH PIER, NORTH FACE; NOTE

TYPICAL VINE GROWTH ON PIERS

PHOTO #19 - MINOR EROSION AND PONDING ON SOUTH SIDE OF

NORTH PIER; TOP OF FOOTING EXPOSED

PHOTO #20 - UPSTREAM CHANNEL

PHOTO #21 - DOWNSTREAM CHANNEL