Report_Bridge_Inspection_5570-463P.pdf

BRIDGE INSPECTION REPORT

TN ROUTE 96 BRIDGE

NATCHEZ TRACE PARKWAY OVER TN ROUTE 96

NATCHEZ TRACE PARKWAY

LN

STRUCTURE NO. 5570-463P

INSPECTION TYPE: ROUTINE

INSPECTION DATE: 3/22/13

Report prepared by: EU

MILE POINT: 438.20

Federal Highway Administration KILOMETER POINT: 705.20 Federal Lands Bridge Office Bridge Inspection and Management Program 21400 Ridgetop Circle Sterling, Virginia 20166 http://www.efl.fhwa.dot.gov/FLHBO/BIP

STRUCTURE SUMMARY STRUCTURE NO. 5570-463P

TN ROUTE 96 BRIDGE INSPECTION DATE: 3/22/13

BRIDGE IDENTIFICATION AND DESCRIPTION

MAIN SPAN MATERIAL: ....... P/S CONCRETE CONTINUOUS

MAIN SPAN TYPE: ............... ARCH - DECK

# OF BEAMS, MAIN SPAN: .. 1

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

WEARING SURFACE: .......... NOT APPLICABLE

ABUT. FOUNDATIONS: ........ SPREAD FTG ON BEARING MAT'L

PIER FOUNDATION(S): ........ OTHER

ABUTMENT / PIER MAT'L: ... CONCRETE

PROJ./PLAN REF. NO: ......... 1A2 / NONE

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

STRUCTURE HISTORY: ...... 2011-POST-TENSIONING REMEDIATION.

LOCATION

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:

1,572.0 FT (479.1 M)

582.0 FT (177.4 M)

37.0 FT (11.3 M)

34.0 FT (10.4 M)

N/A 0 °

NO

NATCHEZ TRACE PARKWAY MILE POINT: ..................... 438.20 (KM PT 705.20)

STATE: ................................. TENNESSEE LOCATION: 8.7 MILES FROM NORTHERN TERMINUS

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

FEATURE INTERSECTED: .. TN ROUTE 96

STRUCTURE EVALUATION SUMMARY

This post-tensioned concrete segmental arch bridge is in good condition overall. Since the last inspection, the post-tensioning tendons in the box girder that were bulging and deformed (T1E in Span #2 and T3W in Span #3) have been investigated and subsequently remediated.

Ponding water is present inside the north pier and at the north end of the south arch interior. It appears that moisture is entering the structure through the access hatches which do not provide a tight seal, and as a result, the walls and top slab underside of the south arch are wet with condensation. The ponding water should be removed from the structure interior, and the access hatches should be replaced or retrofitted with tighter sealing doors.

Isolated post-tensioning tendons inside the box girder appear to have experienced some minor anchorage slip at the abutment, pier, and arch pier segment diaphragms. This is evidenced by uniform cracks in the grout collars where the tendons exit the diaphragms. Additionally, there are isolated locations of moderate grout voids in the tendons, as observed by sounding with a hammer. These conditions, while not requiring remediation at this time, will continue to be monitored during future inspections.

The Structure Evaluation Summary is continued on the following page.

INSPECTION TEAM: M.D. HARLAN, L.M. MUELLER (CLARK NEXSEN)

CONDITION ASSESSMENT:

MATTHEW D. HARLAN, 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

STRUCTURE SUMMARY STRUCTURE NO. 5570-463P

STRUCTURE EVALUATION SUMMARY CONTINUED

There has been some slippage in the past at the interface between the box girder and the elastomeric pad bearings, and between the bearings and the arches. At these locations, the outer edges of the upper plinths have either spalled off or have become delaminated. Many of the bearing pads themselves, as well as the pot bearings at the abutments, are contracted up to 3-1/2" at ambient temperatures ranging from 35°F to 45°F. Similar to the aforementioned post-tensioning deficiencies, this condition does not require repair at this time, but will continue to be monitored.

There is vegetation growth overhanging the structure in Span #1, vine growth throughout the piers and lower portions of the arches, pigeon debris and excrement at numerous locations on both the structure exterior and interior, and debris in the finger-type expansion joints. Additionally, there are isolated missing rail post anchor bolt nuts and one sheared anchor bolt, minor cracking at numerous locations and isolated spalling throughout the concrete superstructure and substructure, and displaced riprap at the north abutment exposing the footing. Repairs should be made as outlined in this report to prevent the possible development of more serious or costly problems in the future.

RECOMMENDATIONS AND ESTIMATED COSTS STRUCTURE NO. 5570-463P

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.

60.11,17 REPLACE MISSING SLOPE PROTECTION AT NORTH ABUTMENT WITH

ENGINEERED RIPRAP. FILL VOID AT BASE OF SOUTH THRUST BLOCK AND

PROTECT WITH ENGINEERED RIPRAP.

32 CY

58.10, 59.11, 60.19

TRIM VEGETATION GROWTH OVERHANGING WEST SIDE OF STRUCTURE IN SPAN

#1; REMOVE VINE GROWTH FROM SUPERSTRUCTURE, PIERS, AND THRUST

BLOCKS.

1 LS

58.2, 59.2,3, 60.3

REMOVE GRAVEL AND DEBRIS FROM FINGER-TYPE EXPANSION JOINTS. REMOVE

DEBRIS FROM BOX GIRDERS AND ARCHES AND FROM SOUTH ABUTMENT

BEARING SEAT.

1 LS

59.3,11, 60.13,19

REPAIR/RETROFIT ACCESS HATCHES AT ARCHES AND PIERS TO ALLOW FOR

PROPER SEAL. REMOVE PONDING WATER FROM INSIDE SOUTH ARCH AND

NORTH PIER.

1 LS $

60.6, 222.3 REPLACE LOOSE AND MISSING STONES AT DRY-EFFECT MASONRY WINGWALLS

AND APPROACH GUARDWALLS.

1 CY $

59.3 REPAIR SPALL ON TOP OF NORTH ARCH AT SOUTH END NEAR EAST SIDE. 6 SF

222.1,2 CLEAN AND SEAL TRANSVERSE CRACKING OF APPROACH SLABS AND SOUTH

ABUTMENT SLAB ALONG RELIEF JOINTS. RESEAL RELIEF JOINTS AS

NECESSARY.

68 LF

58.6 REPLACE MISSING RAILING ANCHOR BOLT NUTS AND SHEARED ANCHOR BOLT AS

NECESSARY.

1 LS

58.1, 59.6 CLEAN EXPOSED REBAR ON TOP SLAB UNDERSIDE IN SPAN #3 AND ON SOUTH

FACE OF NORTH PIER DIAPHRAGM AND COAT WITH APPROVED SEALANT.

2 SF $

PRELIM. MAINTENANCE TOTAL :

ITEM

NO.

REHABILITATION/RECONSTRUCTION

(TYPICALLY NEEDED WITHIN 5 YEARS) QTY. UNIT UNIT

COST ESTIMATES

PRELIM. COST

REHAB. RECONSTR.

58.10 REPAINT ROADWAY STRIPING. 1,622 LF $0

PRELIM. REHABILITATION/RECONSTRUCTION TOTAL : $0

COST ESTIMATE SUMMARY

PRELIM. MAINTENANCE TOTAL:

PRELIM. REHABILITATION TOTAL:

PRELIM. RECONSTRUCTION TOTAL:

TOTAL ITEMIZED COSTS:

$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. 5570-463P

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

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.

(VEGETATION/STRIPING)

F G G N N G N N G

F G

(VEGETATION/ACCESS)

G G N G G N

F

F

G

G

58.1 SEGMENT 61 IN SPAN #3, MINOR SPALL (2’L X 1’W X 1-1/2”D) WITH

EXPOSED REBAR ON UNDERSIDE OF TOP SLAB.

58.2 MODERATE RUSTING OF FINGER-TYPE EXPANSION JOINTS;

MODERATE TO HEAVY ACCUMULATION OF GRAVEL, SOIL, AND

VEGETATION GROWTH IN JOINTS. MODERATE RUSTING OF

PARAPET JOINT PLATES CAUSING MODERATE STAINING OF DECK

SIDES AT JOINTS.

58.3 LATEX CONCRETE WEARING SURFACE. MINOR TRANSVERSE

CRACK IN WEARING SURFACE, SPAN #1 NEAR SOUTH PIER, WITH

EFFLORESCENCE IN EAST SHOULDER; MINOR SPALLING OF

GROOVING ALONG CRACK.

58.6 MINOR VERTICAL CRACKING WITH EFFLORESCENCE ON PARAPETS;

ISOLATED CRACKS FULL DEPTH. MINOR LONGITUDINAL AND MAP

CRACKING WITH EFFLORESCENCE ON TOP FACE OF PARAPETS.

MODERATE DETERIORATION OF PARAPET RELIEF JOINT FILLER;

MINOR VEGETATION GROWTH IN JOINTS. MINOR SPALL ON EAST

PARAPET IN SPAN #1.

MINOR RUSTING OF RAILINGS. MISSING RAIL POST ANCHOR BOLT

NUTS: 2 AT WEST RAILING IN SPAN #3, 1 AT EAST RAILING IN SPAN

#3, AND 1 AT EAST RAILING IN SPAN #4. RAILING EXPANSION

SLEEVE MISALIGNED, EAST RAILING IN SPAN #3. SHEARED RAIL

POST ANCHOR BOLT AT WEST RAILING IN SPAN #4.

58.7 MINOR ACCUMULATION OF DEBRIS ALONG WEST PARAPET IN SPAN

#1.

BREASTWALLS OR COLUMNS 1. G

PILE BENTS 2. N

CAPS AND/OR BEARING SEATS 3. G

BACKWALLS AND/OR BULKHEADS4. G

FOUNDATIONS 5. G

WINGWALLS 6. G

WEEP HOLES7. N

EXPANSION JOINTS 8. N

EROSION AND/OR SCOUR9. G

SETTLEMENT OR DEFLECTION10. G

SLOPE PROTECTION11. F

OTHER12. N

PIER(S)

WALLS AND/OR COLUMNS 13. G

PILE BENTS 14. N

CAPS AND/OR BEARING SEATS 15. G

FOUNDATIONS 16. (THRUST BLOCKS) G

EROSION AND/OR SCOUR17. G

SETTLEMENT OR DEFLECTION18. G

OTHER19. (VEGETATION/ACCESS) F

ITEM REFERENCE AND REMARKS

STREAM BED COMPOSITION : 9.

AVERAGE CLEAR OPENING8.

NORMAL VELOCITY 7.

ADEQUACY OF OPENING6.

OTHER 5.

WATERWAY OBSTRUCTIONS 4.

CHANNEL PROTECTION3.

EROSION AND/OR SCOUR2.

ALIGNMENT1.

61. CHANNEL 7

G G N G N

LOW

EXCESS

200 FT.

SAND, GRAVEL, ROCK

222. APPROACHES 6

OTHER9.

ALIGNMENT8.

SIGNS7.

SETTLEMENT6.

EROSION5.

SURFACING 4.

APPROACH GUARDRAIL 3.

RELIEF JOINTS2.

1. APPROACH SLABS F

G G 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. 1

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.

58.10, 59.11, MODERATE VEGETATION GROWTH OVERHANGING WEST SIDE OF

60.19 STRUCTURE IN SPAN #1. MINOR DETERIORATION OF ROADWAY

STRIPING; MODERATE IN SPAN #1.

MODERATE VINE GROWTH ON SOUTH, EAST, AND NORTH SIDES OF

SOUTH PIER; EXTENDS UP TO EAST SIDE OF SUPERSTRUCTURE

AND EAST OVERHANG. MINOR VINE GROWTH ON TOP OF SOUTH

ARCH NEAR SOUTH END. MINOR VINE GROWTH ON WEST AND

NORTH SIDES OF CENTER PIER. MINOR VINE GROWTH ON NORTH

ARCH UNDERSIDE NEAR NORTH THRUST BLOCK. MODERATE VINE

GROWTH ON NORTH THRUST BLOCK SKEWBACK AND ON SOUTH

AND EAST SIDES OF NORTH PIER.

STEEL STAIRCASES, LADDERS, AND PLATFORMS IN ARCHES AND

PIERS IN GOOD CONDITION. ACCESS HATCHES AT PIERS AND

ARCHES DO NOT SEAL TIGHTLY, ALLOWING IN MOISTURE AND

CONDENSATION; SEE 59.3 AND 60.13. MODERATE RUSTING OF

LADDER AT BOTTOM OF NORTH PIER DUE TO STANDING WATER;

SEE 60.13.

59.1 SOUTH ABUTMENT POT BEARINGS CONTRACTED 3-1/2” AT 37°F;

CONTRACTED 3” AT NORTH ABUTMENT. PREVIOUSLY NOTED

ACTIVE LEAKAGE OF GREASE SUBSTANCE FROM SOUTH

ABUTMENT POT BEARINGS NOT OBSERVED AT TIME OF

INSPECTION.

SOUTH ARCH: SOUTHWEST BEARING CONTRACTED 1";

SUPERSTRUCTURE HAS SLIPPED 2" TO NORTH WITH RESPECT TO

BEARING PAD; PAD IS MISALIGNED 5/8" TO WEST WITH RESPECT TO

SUPERSTRUCTURE; UPPER PLINTH SPALLED FULL LENGTH ON

SOUTH SIDE X FULL HEIGHT X 1-1/4"D. SOUTHEAST BEARING

CONTRACTED 1"; BEARING PAD HAS SLIPPED 1-3/4" TO NORTH WITH

RESPECT TO SUPERSTRUCTURE. NORTHWEST BEARING NEUTRAL;

SUPERSTRUCTURE HAS SLIPPED 3" TO NORTH WITH RESPECT TO

BEARING PAD; UPPER PLINTH SPALLED FULL LENGTH ON SOUTH

SIDE X FULL HEIGHT X 1"D. NORTHEAST BEARING CONTRACTED

1/4"; SUPERSTRUCTURE HAS SLIPPED 2-3/8" TO NORTH WITH

RESPECT TO BEARING PAD; UPPER PLINTH SPALLED 20"L ON

SOUTH SIDE X FULL HEIGHT X 1"D AND DELAMINATED FULL LENGTH

ON EAST SIDE X 18"L ON NORTH SIDE X FULL HEIGHT. AMBIENT

TEMPERATURE AT TIME OF INSPECTION 45°F.

NORTH ARCH: SOUTHWEST BEARING NEUTRAL;

SUPERSTRUCTURE HAS SLIPPED 9/16" TO SOUTH WITH RESPECT

TO BEARING PAD AT EAST EDGE OF PAD AND 0" AT WEST EDGE OF

PAD; UPPER PLINTH SPALLED 14"L ON NORTH SIDE X FULL HEIGHT

X 1"D. SOUTHEAST BEARING NEUTRAL; SUPERSTRUCTURE HAS

SLIPPED 1-1/8" TO SOUTH WITH RESPECT TO BEARING PAD; UPPER

PLINTH SPALLED FULL LENGTH ON NORTH SIDE X FULL HEIGHT X

1-1/4"D. NORTHWEST BEARING CONTRACTED 3/8”. AMBIENT

TEMPERATURE AT TIME OF INSPECTION 45°F.

UBIV REQUIRED FOR INSPECTION OF BEARINGS AT PIERS.

ADDITIONAL ITEM REFERENCE AND REMARKS

59.2 EXTERIOR: SEGMENT 133 IN SPAN #2, MINOR (0.010"W) LONGITUDINAL CRACK IN BOTTOM SLAB UNDERSIDE.

INTERIOR: MINOR (UP TO 0.015"W) LONGITUDINAL CRACKING OF BOX GIRDER ALONG TOP OF WEB WALLS, SOME WITH EFFLORESCENCE. MINOR SPALLING OF DEVIATORS AT ISOLATED LOCATIONS, LIKELY FROM CONSTRUCTION. ISOLATED POOR PATCHES AT LIFTING HOLES IN BOX GIRDER SEGMENTS. EVIDENCE OF BLEED-WATER EVAPORATION THROUGHOUT TENDONS, 1" TO 2" WIDE AT TOP. NUMEROUS TENDONS EXHIBIT SLIGHT WOBBLE IN ALIGNMENT ALONG LENGTH; NO EVIDENCE OF GROUT DETERIORATION OR VOIDS WHEN SOUNDED AT THESE LOCATIONS. NUMEROUS UNSEALED GROUT PORTS AT BOTTOM SLAB ANCHORAGES.

MODERATE ACCUMULATION OF DEBRIS ON BOTTOM SLAB AT PIER SEGMENTS AND ARCH PIER SEGMENTS;

DRAIN BLOCKED AT SEGMENTS 57, 170, AND 171; MINOR ACCUMULATION OF DEBRIS ELSEWHERE.

SEGMENT 14, MISALIGNMENT OF HOSE CLAMP ON TENDON T3E, SOUTH SIDE OF DEVIATOR; ~1/8" REMAINING ON SLEEVE. SEGMENT 18, MINOR (12"L X 8"W X 1"D) SPALL IN BOTTOM SLAB ADJACENT TO EAST WEB. SEGMENT 149, MINOR (HAIRLINE) DIAGONAL CRACK WITH EFFLORESCENCE ON WEST WEB AT TOP. SEGMENT 151, MINOR

DELAMINATION OF PATCH ON WEST DEVIATOR.

EVIDENCE OF TENDON ANCHORAGE SLIP AT NUMEROUS LOCATIONS: SEGMENT 1 T1W AND T1E (1/8"); SEGMENT 26 T1W (1/8") AND T2E (1/16"); SEGMENT 68 T1E (1/32") AND T3E (1/8"); SEGMENT 69 T2W (1/16") AND T2E AND T3E (1/32"); SEGMENT 128 T2W (3/32"); SEGMENT 141 T2W (1/16"), T1E (1/16"), AND T2E (1/8"); AND SEGMENT 196 T1W

(3/16") AND T3W (1/32").

EVIDENCE OF MODERATE GROUT VOIDS IN TENDONS AT ISOLATED LOCATIONS: SEGMENTS 44 TO 45 T2W (30"L), T1E (40"L), AND T2E (54"L); SEGMENTS 81 TO 83 T1E (48"L), T2E (198"L), AND T3E (103"L); SEGMENTS 85 TO 86 T2E (28"L); SEGMENT 116 T1W (76"L), T2W (45"L), AND T3W (38"L); SEGMENTS 117 TO 118 T1W (58"L), T1E (70"L), T2E

(60"L), AND T3E (70"L); AND SEGMENT 184 T1W (53"L) AND T2E (24"L).

TENDONS T3W BETWEEN SEGMENTS 27 AND 39 AND T1E BETWEEN SEGMENTS 99 AND 111 WERE INVESTIGATED AND REMEDIATED IN LATE 2011; TENDONS CURRENTLY WRAPPED WITH HEAT-SHRINK WRAP AND EPOXY;

SURFACE PROFILE BULGES UP TO 1/4" THROUGHOUT LENGTH.

ADDITIONAL ITEM REFERENCE AND REMARKS

59.3 EXTERIOR: MINOR (UP TO 0.030"W) LONGITUDINAL CRACKING WITH EFFLORESCENCE ON TOP SURFACE OF ARCHES NEAR CENTERLINE, TYPICALLY 2 TO 6 CRACKS; CRACKS SPACED APPROXIMATELY 2’ AND EXTEND NEARLY ENTIRE LENGTH OF ARCHES. ISOLATED GROUT PORTS OPEN ON TOP SURFACE OF SEGMENTS BETWEEN NORTH AND SOUTH SETS OF BEARINGS; OPEN PORTS CAN BE PROBED >7". MINOR (HAIRLINE) LONGITUDINAL CRACKING WITH EFFLORESCENCE ON VERTICAL FACES OF ARCHES AT ENDS. LIGHT TO

MODERATE ACCUMULATION OF DEBRIS AT BOTTOM OF ARCHES ALONG THRUST BLOCKS.

SOUTH ARCH EXTERIOR: PREVIOUSLY NOTED MODERATE SPALLING OF RUBBED FINISH ON TOP SURFACE AT

SOUTH END AND CROWN ON EAST SIDE NOT OBSERVED.

NORTH ARCH EXTERIOR: MODERATE SPALL (3'W X 2'L X 1"D) ON TOP AT SOUTH END NEAR EAST SIDE; MINOR SPALL ON TOP BETWEEN CENTER PIER AND ARCH BEARINGS AT 1/3 POINT FROM CENTER PIER. HEAVY ACCUMULATION OF PIGEON DEBRIS AND EXCREMENT (2"D) THROUGHOUT TOP SURFACE BETWEEN NORTH AND SOUTH BEARINGS. MINOR LONGITUDINAL CRACK WITH EFFLORESCENCE ON BOTTOM SLAB UNDERSIDE NEAR

NORTH END, SEGMENT 1A4.

INTERIOR: MINOR (UP TO 0.015"W) LONGITUDINAL CRACKING OF TOP SLAB UNDERSIDE, SOME WITH EFFLORESCENCE, LIKELY REFLECTIVE OF TOP SURFACE TYPICAL CRACKING. MINOR SPALLING OF TOP AND BOTTOM SLAB ANCHORAGE BLOCKS AT ISOLATED LOCATIONS, LIKELY FROM CONSTRUCTION. ISOLATED POOR PATCHES AT LIFTING HOLES IN ARCH SEGMENTS. UNSEALED GROUT PORTS IN ANCHORAGES AT ISOLATED LOCATIONS. LIGHT EFFLORESCENCE FROM MATCH-CAST JOINTS AT ISOLATED LOCATIONS. MINOR (UP TO 0.020"W) VERTICAL AND HORIZONTAL CRACKS, SOME WITH EFFLORESCENCE, IN DIAPHRAGM SEGMENTS, TYPICALLY EXTENDING FROM ACCESS OPENINGS, SEGMENTS 2A9, 2A19, 2A50, AND 1A19. MODERATE

ACCUMULATION OF PIGEON DEBRIS AND NESTS ON BOTTOM SLAB ALONG DIAPHRAGMS.

SOUTH ARCH INTERIOR: WATER PONDING (2'D) IN BASE AT NORTH END; MODERATE CONDENSATION AND DROPLETS THROUGHOUT WALLS AND TOP SLAB UNDERSIDE; EVIDENCE OF MINOR TO MODERATE PONDING ON BOTTOM SLAB ALONG DIAPHRAGMS AND SOUTH THRUST BLOCK. MINOR (HAIRLINE) RANDOM CRACKS WITH

EFFLORESCENCE ON EAST SIDE OF SEGMENT 2A20.

NORTH ARCH INTERIOR: MINOR (HAIRLINE) DIAGONAL CRACK WITH EFFLORESCENCE ON WEST WALL, SEGMENT 1A65. MODERATE ACCUMULATION OF DEBRIS AT ENDS OF ARCH ALONG THRUST BLOCKS.

59.6 ISOLATED POOR PATCHES AT LIFTING HOLES IN INTERNAL DIAPHRAGMS. MINOR (UP TO 0.015"W) VERTICAL, HORIZONTAL, AND DIAGONAL CRACKING OF NUMEROUS DIAPHRAGMS, PRIMARILY EXTENDING FROM ACCESS OPENINGS. MINOR SPALL (4”L X 8”H X 2-1/2”D) WITH EXPOSED REBAR AND DUCTWORK ON SOUTH FACE OF NORTH PIER DIAPHRAGM, WEST SIDE AT BOTTOM (SEGMENT 27). UP TO 1/4" VERTICAL OFFSET BETWEEN ARCH

PIER DIAPHRAGM SEGMENTS 128 AND 129.

60.1 MINOR VERTICAL CRACK WITH EFFLORESCENCE ON SOUTH ABUTMENT BREASTWALL AT CENTERLINE.

GRAFFITI ON NORTH ABUTMENT BREASTWALL.

60.3 MINOR TO MODERATE DEBRIS ACCUMULATION ON SOUTH ABUTMENT BEARING SEAT.

60.5 MINOR SCALING OF VISIBLE PORTION OF NORTH ABUTMENT FOOTING.

ADDITIONAL ITEM REFERENCE AND REMARKS

60.6, 222.3 DRY-EFFECT MASONRY WINGWALLS AND APPROACH GUARDWALLS; SEVERAL STONES LOOSE OR MISSING.

60.9,11 MINOR EROSION HOLES AT CORNERS OF STRUCTURE UNDER ENDS OF EXPANSION JOINT ASSEMBLIES; BRIDGE

DRAINAGE RUNS BETWEEN EXPANSION JOINT ASSEMBLIES AND PARAPET JOINT PLATES.

RIPRAP SLOPE PROTECTION AT SOUTH ABUTMENT. RIPRAP AT NORTH ABUTMENT DISPLACED WITH FOOTING

EXPOSED; RIPRAP SCATTERED DOWN SLOPE. MINOR EROSION OF ABUTMENT SLOPES.

60.13 EXTERIOR: MINOR (HAIRLINE) VERTICAL CRACKING WITH EFFLORESCENCE ON WEST FACE OF CENTER PIER AT BOTTOM. MINOR SPALL WITH EXPOSED REBAR ON SOUTH FACE OF CENTER PIER (UNABLE TO VERIFY DURING THIS INSPECTION). MINOR (HAIRLINE) VERTICAL CRACKING WITH EFFLORESCENCE ON NORTH FACE OF CENTER PIER AND SOUTH FACE OF NORTH PIER. MINOR SPALL ON NORTH PIER, NORTHEAST CORNER AT

BOTTOM.

INTERIOR: MINOR VERTICAL CRACKING OF WALLS AT VERY ISOLATED LOCATIONS, SOME WITH

EFFLORESCENCE. WATER PONDING (1”D) IN BASE OF NORTH PIER.

60.16 EXTERIOR: MINOR CRACKING AND SCALING OF FINISH COAT ON TOP SURFACE OF NORTH THRUST BLOCK.

MINOR HORIZONTAL AND RANDOM CRACKING AND WATER STAINING ON NORTH THRUST BLOCK SKEWBACK.

INTERIOR: MINOR (HAIRLINE) RANDOM CRACKS WITH EFFLORESCENCE ON SOUTH THRUST BLOCK INSIDE

SOUTH ARCH; MODERATE EFFLORESCENCE FROM INTERFACE WITH SEGMENT 2A54 AT TOP.

60.17 MINOR EROSION AT THRUST BLOCKS. UNPROTECTED SLOPE AT BASE OF SOUTH THRUST BLOCK ON NORTH SIDE; VOID BETWEEN SLOPE AND BOTTOM OF THRUST BLOCK MEASURES 16’W X UP TO 2’H X 10’D.

61.1 SMALL CHANNEL FLOWS ALONG SOUTH SIDE OF UNDERPASS ROADWAY; NO INTERACTION WITH STRUCTURE.

222.1 MINOR MAP CRACKING OF APPROACH SLABS AND ABUTMENT SLABS AT CORNERS AND THROUGHOUT SOUTH ABUTMENT SLAB. MINOR TRANSVERSE CRACKING OF APPROACH SLABS AND SOUTH ABUTMENT SLAB ALONG

RELIEF JOINTS.

MINOR TO MODERATE DIAGONAL CRACKING OF ABUTMENT SLABS. MINOR TRANSVERSE CRACKING WITH

EFFLORESCENCE ON UNDERSIDE OF ABUTMENT SLAB OVERHANGS.

MINOR DELAMINATION OF SOUTH APPROACH SLAB ADJACENT TO RELIEF JOINT AT ABUTMENT SLAB, 30”L X 12”W ON WEST SIDE AND 12”L X 96”W ON EAST SIDE. MINOR DELAMINATION OF NORTH APPROACH SLAB ADJACENT TO RELIEF JOINT AT ABUTMENT SLAB, 48”L X 20”W ON WEST SIDE AND 36”L X 30”W ON EAST SIDE. MINOR EDGE

SPALLING ALONG FREE END OF NORTH APPROACH SLAB.

222.2 MINOR ADHESION FAILURE OF RELIEF JOINT SEALANT AT BOTH APPROACHES.

222.7 "NO PARKING ON BRIDGE" AND "THERE IS HOPE. CALL ANYTIME. 1-800-273-TALK (1-800-273-8255) WWW.TSPN.ORG" SIGNS AT SOUTHEAST AND NORTHWEST CORNERS. TEMPORARY FLASHER MOUNTED TO EAST RAILING AT SOUTH APPROACH AND WEST RAILING AT NORTH APPROACH. U.S. DEPARTMENT OF INTERIOR MARKER MOUNTED TO TOP OF EAST PARAPET AT NORTH APPROACH. "KEEP OFF BRIDGE" SIGNS POSTED AT

CENTER AND NORTH THRUST BLOCKS.

STRUCTURE LOAD RATING STRUCTURE NO. 5570-463P

TRUCK TYPE

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

TONS METRIC TONS TONS METRIC TONS

H 20 18 33 30

HS 36 33 60 54

TYPE 3 59 54 99 90

TYPE 3S2 62 56 104 94

TYPE 3-3 64 58 107 97

DESIGN LOADING: HS20 (MS18)

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.

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 5570-463P

STRUCTURE IDENTIFICATION

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

(202) STRUCTURE NAME: .......... TN ROUTE 96 BRIDGE (2) STATE HWY. AGENCY DIST:

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

(204) STRUCTURE NUMBER: ..... 5570-463P (4) CITY/PLACE CODE:

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

(206) ROUTE CODE NUMBER: ... 1 (6) FEATURES INTERSECTED:....... TN ROUTE 96

(207) ROAD SECTION NO: .......... 463P (7) FACILITY CARRIED: .................. NATCHEZ TRACE PARKWAY

(208) NPS ROAD CLASS: ............ 1 - PRINCIPAL PARK ROAD (8) STATE STRUCTURE NO: .......... 5570463P0000000

(209) WITHIN NPS BNDRY?: ....... YES (9) LOCATION: ................................ 8.7 MILES FROM NORTHERN

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

(211) PROJECT NO(S): ................ 1A2 (11) MILE POINT: ............................. 438.20 (KM PT 705.20)

(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:

6 - P/S CONCRETE CONTINUOUS

11 - ARCH - DECK

582.0 FT (177.4 M)

1,572.0 FT (479.1 M)

2 - SPREAD FTG ON BEARING MAT'L

2 - SPREAD FTG ON BEARING MAT'L

5 - OTHER

5 - OTHER

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: .. N - NOT APPLICABLE

B) TYPE MEMBRANE: ................. N - NOT APPLICABLE

C) TYPE PROTECTION: .............. N - NOT APPLICABLE

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

LOAD RATING AND POSTING

(31) DESIGN LOAD: ................. 5 - HS20 (MS18) (41) LOAD RESTRICTION: ......... R - POSTED (OTHER)

(66) INVENTORY RATING: ...... 36.0 TONS (33.0 METRIC TONS) (70) BRIDGE POSTING: .............. 5 - NO POSTING REQUIRED

(64) OPERATING RATING: ...... 60.0 TONS (54.0 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. 5570-463P

GEOMETRY, TRAFFIC, AND NAVIGATIONAL DATA

(51) CURB TO CURB WIDTH: ........... 34.0 FT (10.4 M) (16) LATITUDE: ............................. 35°59'03.60"

(17) LONGITUDE: ......................... 86°59'40.20"

(19) DETOUR LENGTH: ............... 0 MI (0 KM)

(28A) LANES ON STRUCT:

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

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

(42B) SERVICE UNDER: .............. 1 - HIGHWAY

(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: ....................... 0.0 FT (0.0 M)

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

(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)

22.0 FT (6.7 M)

22.0 FT (6.7 M)

6.0 FT (1.8 M)

6.0 FT (1.8 M)

0 - NO MEDIAN

0 °

NO

34.0 FT (10.4 M)

0.0 FT (0.0 M)

0.0 FT (0.0 M)

2 - MOUNTED ON PARAPET

6 - ALUMINUM

1 - CONTINUOUS RAIL

2.67 FT (0.81 M)

99.99 FT (99.99 M)

99.99 FT (99.99 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: ... 1111

(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

N - Not over waterway.

2 - REHAB/RECONSTRUCTION

D - MINOR

$0

ADDITIONAL INFORMATION

(230) STRUCTURE HISTORY:

2011-POST-TENSIONING REMEDIATION.

(231) ADDITIONAL CONSIDERATIONS:

COORDINATE WITH NPS PERSONNEL TO OBTAIN ACCESS TO LOCKED HATCHES FOR BOX GIRDER, ARCHES, AND PIERS.

(330) ADDITIONAL CONFIG. INFO.:

APPENDIX STRUCTURE NO. 5570-463P

PHOTOGRAPHS STRUCTURE NO. 5570-463P

PHOTO #1 - LOOKING SOUTHBOUND TOWARD TUPELO

FLOW

PHOTO #2 - WEST (DOWNSTREAM) SIDE

PHOTO #3 - GENERAL TOPSIDE VIEW

LOOKING SOUTH

PHOTO #4 - TRANSVERSE CRACK IN WEARING

SURFACE, SPAN #1 NEAR SOUTH PIER; NOTE

SPALLING OF GROOVING ALONG CRACK AND

EFFLORESCENCE IN EAST SHOULDER

PHOTO #5 - VEGETATION GROWTH

OVERHANGING WEST SIDE OF STRUCTURE IN

SPAN #1; ALSO NOTE TYPICAL

DETERIORATION OF ROADWAY STRIPING

PHOTO #6 - TYPICAL RUSTING OF

FINGER-TYPE EXPANSION JOINTS; SOUTH

EXPANSION JOINT SHOWN; ALSO NOTE

TYPICAL ACCUMULATION OF DEBRIS IN

JOINTS

PHOTO #7 - TYPICAL VERTICAL CRACKING WITH EFFLORESCENCE ON

PARAPETS; EAST PARAPET IN SPAN #3 SHOWN

PHOTO #8 - SPALL ON EAST PARAPET IN SPAN #1; ALSO NOTE TYPICAL

DETERIORATION OF PARAPET RELIEF JOINT FILLER

PHOTO #9 - MISSING RAIL POST ANCHOR BOLT NUT AT WEST RAILING

IN SPAN #3

PHOTO #10 - SHEARED RAIL POST ANCHOR BOLT AT WEST RAILING IN

SPAN #4

PHOTO #11 - TRANSVERSE CRACKING OF

NORTH APPROACH SLAB ALONG NORTH

RELIEF JOINT

PHOTO #12 - TYPICAL DIAGONAL CRACKING

OF ABUTMENT SLABS; NORTH ABUTMENT

SLAB SHOWN

PHOTO #13 - DELAMINATION OF NORTH

APPROACH SLAB ADJACENT TO RELIEF JOINT

AT ABUTMENT SLAB ON EAST SIDE; ALSO

NOTE TYPICAL MAP CRACKING OF APPROACH

SLABS AND ABUTMENT SLABS AT CORNERS

PHOTO #14 - TYPICAL LOOSE OR MISSING

STONES AT DRY-EFFECT MASONRY

APPROACH GUARDWALLS; NORTHWEST

GUARDWALL SHOWN

PHOTO #15 - GENERAL UNDERSIDE VIEW OF BOX GIRDER LOOKING

NORTH, SPAN #2

PHOTO #16 - LONGITUDINAL CRACK IN BOX GIRDER BOTTOM SLAB

UNDERSIDE, SEGMENT 133 IN SPAN #2

PHOTO #17 - TYPICAL CONTRACTION OF SOUTH ABUTMENT POT

BEARINGS; EAST BEARING SHOWN

PHOTO #18 - TYPICAL CONTRACTION OF NORTH ABUTMENT POT

BEARINGS; WEST BEARING SHOWN

PHOTO #19 - CONTRACTION OF SOUTHWEST BEARING AT SOUTH

ARCH; ALSO NOTE SLIPPAGE OF SUPERSTRUCTURE AND SPALLING

OF UPPER PLINTH

PHOTO #20 - ALTERNATE VIEW OF SOUTHWEST BEARING AT SOUTH

ARCH; NOTE MISALIGNMENT TO WEST WITH RESPECT TO

SUPERSTRUCTURE

PHOTO #21 - CONTRACTION OF SOUTHEAST BEARING AT SOUTH

ARCH; ALSO NOTE SLIPPAGE OF BEARING PAD

PHOTO #22 - SLIPPAGE OF SUPERSTRUCTURE AT NORTHWEST

BEARING AT SOUTH ARCH

PHOTO #23 - CONTRACTION OF NORTHEAST BEARING AT SOUTH

ARCH; ALSO NOTE SLIPPAGE OF SUPERSTRUCTURE

PHOTO #24 - SLIPPAGE OF SUPERSTRUCTURE AT SOUTHEAST

BEARING AT NORTH ARCH; NOTE SPALLING OF UPPER PLINTH

PHOTO #25 - GENERAL VIEW OF BOX GIRDER INTERIOR LOOKING

SOUTH, SPAN #4

PHOTO #26 - TYPICAL LONGITUDINAL CRACKING OF BOX GIRDER

ALONG TOP OF WEB WALLS; WEST WALL AT SEGMENT 149 SHOWN

PHOTO #27 - SPALL WITH EXPOSED REBAR ON UNDERSIDE OF TOP

SLAB, SEGMENT 61

PHOTO #28 - CLOSE-UP OF PREVIOUS PHOTO

PHOTO #29 - TYPICAL SPALLING OF

DEVIATORS AT ISOLATED LOCATIONS, LIKELY

FROM CONSTRUCTION; WEST SIDE IN

SEGMENT 151 SHOWN; ALSO NOTE

DELAMINATION OF PATCH

PHOTO #30 - TYPICAL WOBBLE IN ALIGNMENT

OF TENDONS; EAST TENDONS BETWEEN

SEGMENTS 27 AND 39 SHOWN

PHOTO #31 - TYPICAL UNSEALED GROUT PORTS AT BOTTOM SLAB

ANCHORAGES; TENDON 401 WEST ANCHORAGE AT SEGMENT 3

SHOWN

PHOTO #32 - TYPICAL ACCUMULATION OF DEBRIS ON BOTTOM SLAB

AT PIER SEGMENTS AND ARCH PIER SEGMENTS; SEGMENTS 56 AND 57

SHOWN; NOTE BLOCKED DRAIN

PHOTO #33 - SPALL IN BOTTOM SLAB ADJACENT TO EAST WEB,

SEGMENT 18

PHOTO #34 - EVIDENCE OF TENDON T1W ANCHORAGE SLIP AT

SEGMENT 196

PHOTO #35 - EVIDENCE OF TENDON T1W ANCHORAGE SLIP AT

SEGMENT 1

PHOTO #36 - CLOSE-UP OF PREVIOUS PHOTO

PHOTO #37 - EVIDENCE OF GROUT VOIDS IN TENDONS T1E AND T2E AT

SEGMENTS 44 AND 45

PHOTO #38 - EVIDENCE OF GROUT VOIDS IN TENDONS T1E, T2E, AND

T3E AT SEGMENTS 81 TO 83

PHOTO #39 - GENERAL VIEW OF REMEDIATED

TENDON T3W BETWEEN SEGMENTS 27 AND

PHOTO #40 - GENERAL VIEW OF REMEDIATED

TENDON T1E BETWEEN SEGMENTS 99 AND

PHOTO #41 - GENERAL VIEW OF CENTER PIER DIAPHRAGM, NORTH

SIDE

PHOTO #42 - SPALL WITH EXPOSED REBAR AND DUCTWORK ON

SOUTH FACE OF NORTH PIER DIAPHRAGM, WEST SIDE AT BOTTOM

PHOTO #43 - TYPICAL CRACKING OF DIAPHRAGMS, PRIMARILY

EXTENDING FROM ACCESS OPENINGS; SOUTH ABUTMENT

DIAPHRAGM SHOWN

PHOTO #44 - CLOSE-UP OF PREVIOUS PHOTO

PHOTO #45 - VERTICAL OFFSET BETWEEN ARCH PIER DIAPHRAGM

SEGMENTS 128 AND 129

PHOTO #46 - GENERAL UNDERSIDE VIEW OF ARCH LOOKING SOUTH,

SPAN #3

PHOTO #47 - TYPICAL LONGITUDINAL

CRACKING WITH EFFLORESCENCE ON TOP

SURFACE OF ARCHES NEAR CENTERLINE;

SOUTH END OF SOUTH ARCH SHOWN

PHOTO #48 - TYPICAL LONGITUDINAL

CRACKING WITH EFFLORESCENCE ON TOP

SURFACE OF ARCHES NEAR CENTERLINE;

SOUTH ARCH NEAR SOUTH BEARINGS

SHOWN

PHOTO #49 - TYPICAL GROUT PORTS OPEN ON TOP SURFACE OF

ARCH SEGMENTS BETWEEN NORTH AND SOUTH BEARINGS; MIDSPAN

OF SOUTH ARCH SHOWN

PHOTO #50 - SPALL ON TOP OF NORTH ARCH AT SOUTH END NEAR

EAST SIDE

PHOTO #51 - ACCUMULATION OF PIGEON

DEBRIS AND EXCREMENT THROUGHOUT TOP

SURFACE OF NORTH ARCH BETWEEN NORTH

AND SOUTH BEARINGS

PHOTO #52 - GENERAL VIEW OF ACCESS

HATCH FOR SOUTH ARCH AT NORTH END;

NOTE HATCHES DO NOT SEAL TIGHTLY

PHOTO #53 - GENERAL VIEW OF ARCH INTERIOR LOOKING SOUTH,

NORTH END OF NORTH ARCH

PHOTO #54 - GENERAL VIEW OF TYPICAL DIAPHRAGM INSIDE ARCHES,

SEGMENT 1A59 OF NORTH ARCH

PHOTO #55 - TYPICAL LONGITUDINAL CRACKING OF ARCH TOP SLAB

UNDERSIDE WITH EFFLORESCENCE; SEGMENTS 1A54 AND 1A55 AT

NORTH ARCH SHOWN

PHOTO #56 - TYPICAL SPALLING OF ARCH INTERIOR TOP AND BOTTOM

SLAB ANCHORAGE BLISTERS, LIKELY FROM CONSTRUCTION; TOP

SLAB EAST SIDE BLISTER AT SEGMENT 2A7 IN SOUTH ARCH SHOWN

PHOTO #57 - HORIZONTAL CRACKING WITH EFFLORESCENCE ON

NORTH ARCH DIAPHRAGM SEGMENT 1A19, WEST SIDE

PHOTO #58 - TYPICAL ACCUMULATION OF PIGEON DEBRIS AND NESTS

ON ARCH BOTTOM SLAB ALONG DIAPHRAGMS; SEGMENT 1A30 AT

NORTH ARCH SHOWN

PHOTO #59 - WATER PONDING IN BASE OF SOUTH ARCH AT NORTH

END

PHOTO #60 - TYPICAL CONDENSATION AND DROPLETS THROUGHOUT

SOUTH ARCH INTERIOR WALLS AND TOP SLAB UNDERSIDE; MIDSPAN

AT CLOSURE POUR SHOWN

PHOTO #61 - TYPICAL EVIDENCE OF PONDING ON SOUTH ARCH

BOTTOM SLAB ALONG DIAPHRAGMS; SEGMENT 2A39 SHOWN

PHOTO #62 - RANDOM CRACKS WITH EFFLORESCENCE ON SOUTH

THRUST BLOCK INSIDE SOUTH ARCH; ALSO NOTE EFFLORESCENCE

FROM INTERFACE WITH SEGMENT 2A54 AT TOP

PHOTO #63 - GENERAL VIEW OF NORTH

ABUTMENT; NOTE DISPLACEMENT OF RIPRAP,

EXPOSED FOOTING, AND GRAFFITI ON

BREASTWALL

PHOTO #64 - VERTICAL CRACK WITH

EFFLORESCENCE ON SOUTH ABUTMENT

BREASTWALL AT CENTERLINE

PHOTO #65 - TYPICAL DEBRIS ON SOUTH

ABUTMENT BEARING SEAT; EAST SIDE

SHOWN

PHOTO #66 - TYPICAL TRANSVERSE

CRACKING WITH EFFLORESCENCE ON

UNDERSIDE OF ABUTMENT SLAB

OVERHANGS; WEST OVERHANG AT SOUTH

ABUTMENT SHOWN

PHOTO #67 - DISPLACED RIPRAP SCATTERED

DOWN NORTH ABUTMENT SLOPE; ALSO NOTE

TYPICAL EROSION OF ABUTMENT SLOPES

PHOTO #68 - GENERAL VIEW OF CENTER

PIER, EAST SIDE

PHOTO #69 - TYPICAL VERTICAL CRACKING

WITH EFFLORESCENCE ON NORTH FACE OF

CENTER PIER; AREA NEAR BASE SHOWN

PHOTO #70 - TYPICAL VERTICAL CRACKING

WITH EFFLORESCENCE ON SOUTH FACE OF

NORTH PIER; AREA NEAR BASE SHOWN

PHOTO #71 - VINE GROWTH ON SOUTH PIER

EXTENDING TO SUPERSTRUCTURE AND

OVERHANG

PHOTO #72 - GENERAL VIEW OF ACCESS

HATCH FOR NORTH PIER; NOTE HATCHES DO

NOT SEAL TIGHTLY

PHOTO #73 - EXPOSED SOIL UNPROTECTED AT BASE OF SOUTH

THRUST BLOCK ON NORTH SIDE

PHOTO #74 - GENERAL VIEW OF SOUTH PIER INTERIOR LOOKING

DOWN

PHOTO #75 - TYPICAL VERTICAL CRACKING OF PIER WALLS ON

INTERIOR SIDE; SOUTH WALL OF SOUTH PIER AT BOTTOM SHOWN

PHOTO #76 - WATER PONDING IN BASE OF NORTH PIER; NOTE

RUSTING OF LADDER AT BOTTOM

PHOTO #77 - UPSTREAM CHANNEL

PHOTO #78 - DOWNSTREAM CHANNEL