NP_SER_PMS FY20(5)_BIP_STR 5230-008P.pdf

STRUCTURE SUMMARY STRUCTURE NO. 5230-008P

LITTLE YELLOW CREEK CULVERT #3 INSPECTION DATE: 5/15/18

CULVERT IDENTIFICATION AND DESCRIPTION

MAIN SPAN MATERIAL: ........ CONCRETE NO. OF BARRELS:

FOUNDATION: ....................... SPREAD FTG ON BEARING MAT'L BARREL LENGTH: ............... 240 FT (73 M)

STRUCT. TOTAL LENGTH: ... 45.3 FT (13.8 M) SKEW ANGLE: ..................... 45 °

MAX. SPAN LENGTH: ............ 15.3 FT (4.7 M) YEAR BUILT:

PROJ./PLAN REF. NO: .......... 25E7 / NONE YEAR RECONSTRUCTED: .. N/A

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

STRUCTURE HISTORY:

LOCATION

CUMBERLAND GAP NATIONAL HISTORICAL PARK MILE POINT:

STATE: .................................. KENTUCKY LOCATION: CULVERT RUNS PARALLEL WITH RAMP.

FROM US25E, TURN EAST ONTO CUMBERLAND FACILITY CARRIED: ............. SKYLAND ROAD ENTRANCE RAMP

AVE, RIGHT ON 10 ST, LEFT ON ARMDALE AVE.

FEATURE INTERSECTED: ... LITTLE YELLOW CREEK

STRUCTURE EVALUATION SUMMARY

This triple barrel concrete box culvert is in fair condition overall. The main problem is sediment and flood debris accumulation at both culvert ends and in the south barrel. Other problems include tree and vine growth on the exterior face of the north barrel wall and south wingwalls; vegetation growth overhanging the headwalls; exposed rebar on the north intermediate wall of the south barrel; and deterioration of the vertical joints at the south wingwalls.

There is also widespread cracking with efflorescence and leakage on the culvert walls and slabs.

The cracking of the barrels will continue to be monitored during future inspection cycles. Corrective action for the remaining problems should be taken as outlined in this report to prevent the possible development of more serious or costly problems in the future.

INSPECTION TEAM: A. IMMEL, P. SWANN (VOLKERT, INC.)

CONDITION ASSESSMENT:

AARON IMMEL, P.E., FIELD TEAM LEADER

REPORT REVIEW:

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

REPORT APPROVAL: DATE: 9/28/18

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

RECOMMENDATIONS AND ESTIMATED COSTS STRUCTURE NO. 5230-008P

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.

D226 PRIORITY OF IMPROVEMENT

ITEM

NO.

ROUTINE MAINTENANCE QTY. UNIT UNIT

COST

PRELIM.

COST

ESTIMATE

62.1,3,4 REMOVE TREES AND VINE GROWTH FROM EXTERIOR FACE OF NORTH BARREL

WALL AND SOUTH WINGWALLS. REMOVE VEGETATION OVERHANGING

HEADWALLS.

1 LS

PRELIM. MAINTENANCE TOTAL :

ITEM

NO.

REHABILITATION/RECONSTRUCTION

(TYPICALLY NEEDED WITHIN 5 YEARS)

QTY. UNIT

UNIT

COST

PRELIM. COST

ESTIMATES

REHAB. RECONSTR.

61.4 REMOVE SEDIMENT ACCUMULATION AND FLOOD DEBRIS FROM

CULVERT ENDS AND SOUTH BARREL.

1 LS

62.4 CLEAN AND RESEAL VERTICAL JOINTS AT SOUTH WINGWALLS. 1 LS

62.1 REPAIR CONCRETE AT LOCATIONS WITH EXPOSED REBAR ON

NORTH INTERMEDIATE WALL OF SOUTH BARREL.

1 LS

CONTRACT COSTS FOR MOBILIZATION, TRAFFIC CONTROL,

DESIGN, AND CONSTRUCTION ENGINEERING (APPROXIMATELY

70% TOTAL REHAB COST) PLUS PARK LOCATION FACTOR.

1 LS

PRELIM. REHABILITATION/RECONSTRUCTION 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. 5230-008P

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

N

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.

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 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.

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)

STREAM BED COMPOSITION :9.

AVG. 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

G F N F

10 FT.

MED

SUFF

N

ITEM REFERENCE AND REMARKS

62. CULVERT 6

1. BARREL(S)

2. FOOTINGS

3. HEADWALLS

4. WINGWALLS

5. DEBRIS AND/OR SILT

6. EROSION AND/OR SCOUR

7. SETTLEMENT AND/OR DEFLECTION

8. ADEQUACY OF COVER

9. PARAPETS AND/OR RAILINGS

10. ROADWAY SURFACE

11. RIDEABILITY

12. OTHER (GUARDRAIL)

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

222. APPROACHES 7

1. APPROACH SLABS

2. RELIEF JOINTS

3. APPROACH GUARDRAIL

4. SURFACING

5. EROSION

6. SETTLEMENT

7. SIGNS

8. ALIGNMENT

9. OTHER

N N G G G G N G N

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

SILT, SAND, GRAVEL

61.1 MAIN CHANNEL FLOW IS ALONG OUTSIDE OF NORTH BARREL WALL.

NO FLOW THROUGH CULVERT AT TIME OF INSPECTION, BUT WATER

IS PONDED IN CENTER BARREL.

61.2 MINOR SLOUGHING ALONG DOWNSTREAM CHANNEL BANKS WITH

MINOR UNDERMINING OF TREES. SEE BRIDGE FILE FOR SCOUR

EVALUATION.

61.4, 62.5 MODERATE SEDIMENT, UP TO 2.5' DEEP, AND FLOOD DEBRIS

ACCUMULATION AT BOTH CULVERT ENDS. MINOR FLOOD DEBRIS IN

CHANNEL. MODERATE SEDIMENT ACCUMULATION IN SOUTH

BARREL BLOCKING WEEP HOLES AT WEST END; MINOR IN CENTER

AND NORTH BARRELS.

PREVIOUSLY NOTED BEAVER DAM IN UPSTREAM CHANNEL HAS

BEEN REMOVED.

61.6 PREVIOUS REPORT INDICATES CHANNEL OVERTOPS NORTH

CHANNEL BANK DURING FLOOD CONDITIONS.

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. 3 OF 22

FIELD INSPECTION REPORT STRUCTURE NO. 5230-008P

ADDITIONAL ITEM REFERENCE AND REMARKS

62.1 MINOR CRACKING THROUGHOUT CULVERT WITH EFFLORESCENCE, LEAKAGE, AND RUST STAINING, ESPECIALLY NEAR CENTER OF BARREL LENGTH AND ON INTERIOR WALLS. MINOR CRACKING WITH EFFLORESCENCE ALONG CONSTRUCTION JOINTS; RUST STAINS AND LEAKAGE ALSO PRESENT IN SEVERAL AREAS. SEVERAL AREAS OF

LEAKAGE HAVE DEPOSITS AND SMALL STALACTITES.

SHALLOW SPALL (12" H X 4" W) WITH EXPOSED REBAR ON NORTH INTERMEDIATE WALL OF SOUTH BARREL.

SHALLOW SPALL (18" H X 12" W) ON NORTH WALL OF NORTH BARREL NEAR EAST END; NO REBAR EXPOSED.

EXPOSED REBAR CHAIRS ON SLAB UNDERSIDES. MINOR SCALING OF FLOORS AND WALLS IN NORMAL WATER

ZONE.

MODERATE VINE GROWTH ON EXTERIOR FACE OF NORTH BARREL WALL; NUMEROUS TREES GROWING ALONG

WALL.

62.3 MINOR SPALLING OF FINISH COAT WITH EFFLORESCENCE AND STAINING ON HEADWALLS; HEAVY ON WEST.

MINOR SPALLING OF WEST HEADWALL OVER CENTER BARREL. MODERATE DETERIORATION OF JOINT MORTAR

ON WEST HEADWALL; MINOR AT EAST. MINOR TO MODERATE VEGETATION GROWTH OVERHANGING

HEADWALLS AT BOTH CULVERT ENDS; EXTENDING INTO SOUTH BARREL AT WEST END. MODERATE HORIZONTAL

CRACKING OF EAST HEADWALL ABOVE CENTER BARREL.

62.4 TREES GROWING NEAR SOUTH WINGWALLS; MODERATE VEGETATION GROWTH OVERHANGING WINGWALLS.

SEWER MANHOLE IN FRONT OF SOUTHEAST WINGWALL. CRACKING AND DETERIORATION OF GROUT IN

VERTICAL JOINTS AT SOUTH WINGWALLS.

62.6 UP TO 12" OF FLOOR EXPOSED AT UPSTREAM END OF CENTER AND NORTH BARRELS.

62.7 SOUTHWEST WINGWALL APPEARS TO HAVE SEPARATED APPROXIMATELY 1/2" FROM BARREL IN BOTTOM 24"; 1/2"

AT SOUTHEAST WINGWALL IN BOTTOM 12".

62.10, 222.4 MINOR HEAVING AND MINOR TRANSVERSE AND LONGITUDINAL CRACKING OF PAVEMENT ABOVE CULVERT.

62.12 SEVERAL GUARDRAIL SPACER BLOCKS ROTATED ALONG ROADWAY ABOVE CULVERT.

STRUCTURE LOAD RATING STRUCTURE NO. 5230-008P

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 55

TYPE 3 31 28 52 48

TYPE 3S2 49 45 82 75

TYPE 3-3 61 55 102 92

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: CONSTRUCTION DETAILS FOR THIS STRUCTURE ARE NOT AVAILABLE. RATING IS BASED ON ENGINEERING JUDGEMENT IN ACCORDANCE WITH AASHTO MANUAL FOR BRIDGE EVALUATION (MBE).

SEE BRIDGE FILE FOR MORE INFORMATION.

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 5230-008P

STRUCTURE IDENTIFICATION

(201) PARK: CUMBERLAND GAP NATIONAL HISTORICAL PARK

(202) STRUCTURE NAME: .......... LITTLE YELLOW CREEK CULVERT #3

(203) STRUCTURE KIND: ............ 2 - CULVERT

(204) STRUCTURE NUMBER: ..... 5230-008P

(205) NPS REGION: .................... 4 - SOUTHEAST

(206) ROUTE CODE NUMBER: ... 10

(207) ROAD SECTION NO: .......... 008P

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

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

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

(211) PROJECT NO(S): ................ 25E7

(212) DRAWING NUMBERS: ....... NONE

(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: ..

214 - KENTUCKY (KY)

013 - BELL

160000000

LITTLE YELLOW CREEK

SKYLAND ROAD ENTRANCE

5230008P0000000

CULVERT RUNS PARALLEL W

99.99 FT (99.99 M)

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:

1 - CONCRETE

19 - CULVERT

15.3 FT (4.7 M)

45.3 FT (13.8 M)

2 - SPREAD FTG ON BEARING MAT'L

1 - SILL

6 - N/A

6 - N/A

N - NOT APPLICABLE

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

(66) INVENTORY RATING: ...... 36.0 TONS (32.7 METRIC TONS) (70) BRIDGE POSTING: .............. 5 - NO POSTING REQUIRED

(64) OPERATING RATING: ...... 60.1 TONS (54.5 METRIC TONS)

INSPECTION DATES

(90) INSPECTION DATE: 5/18 (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: 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. 5230-008P

GEOMETRY, TRAFFIC, AND NAVIGATIONAL DATA

(16) LATITUDE: ............................. 36°36'22.20" (51) CURB TO CURB WIDTH: ........... 0.0 FT (0.0 M)

(17) LONGITUDE: ......................... 83°41'51.20" (52) DECK WIDTH: ............................ 0.0 FT (0.0 M)

(19) DETOUR LENGTH: ............... 1 MI (2 KM) (32) APPR. ROADWAY WIDTH: ........ 16.0 FT (4.9 M)

(28A) LANES ON STRUCT: .......... 02 (213) APPR. PAVEMENT WIDTH: ..... 18.0 FT (5.0 M)

(28B) LANES UNDER STRUCT: ... 00 LEFT SHOULDER: .................. 0.0 FT (0.0 M)

(42A) SERVICE ON: ..................... 1 - HIGHWAY RIGHT SHOULDER: ................ 2.0 FT (1.0 M)

(42B) SERVICE UNDER: .............. 5 - WATERWAY (33) BRIDGE MEDIAN: ....................... 2 - CLOSED MEDIAN (no barrie

(29) AVG. DAILY TRAFFIC: .......... 300 (34) SKEW ANGLE: ............................ 45 °

(30) YEAR OF ADT: ...................... 2014 (35) DECK FLARE?: ........................... NO

(114) FUTURE ADT: ..................... 330 (47) TOTAL HORIZ. CLEARANCE: .... 18.0 FT (5.5 M)

(115) YEAR OF FUTURE ADT: ..... 2034 (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: ......... 1 - FULL HEIGHT (NO PARAPE

(111) ABUT. OR PIER PROT: ....... MATERIAL: .............................. 4 - STEEL

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

(55) RIGHT: ....................... 0.0 FT (0.0 M) (215) BRIDGE RAIL HEIGHT: ............ 0.00 FT (0.00 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: ................................. N

(59) SUPERSTRUCTURE: ......... N

(60) SUBSTRUCTURE: .............. N

(61) CHANNEL:

(62) CULVERT:

(222) APPROACHES:

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

(36) TRAFFIC SAFETY FEAT: ... 111N

(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

D - MINOR

ADDITIONAL INFORMATION

(230) STRUCTURE HISTORY:

(231) ADDITIONAL CONSIDERATIONS:

(330) ADDITIONAL CONFIG. INFO.:

APPENDIX STRUCTURE NO. 5230-008P

PHOTOGRAPHS STRUCTURE NO. 5230-008P

PHOTO #1 - LOOKING NORTH AWAY FROM CUMBERLAND GAP TUNNEL

FLOW

PHOTO #2 - EAST (UPSTREAM) SIDE; NOTE SEDIMENT

PHOTO #3 - GENERAL TOPSIDE VIEW LOOKING SOUTH

PHOTO #4 - GENERAL UNDERSIDE VIEW OF NORTH BARREL LOOKING

EAST

PHOTO #5 - GENERAL VIEW OF HEAVING OF PAVEMENT IN

NORTHBOUND LANE

PHOTO #6 - HEAVING OF PAVEMENT IN NORTHBOUND LANE ABOVE

CULVERT

PHOTO #7 - GENERAL VIEW OF CHANNEL ALONG NORTH BARREL

WALL; NOTE VEGETATION GROWTH ON WALL

PHOTO #8 - GENERAL VIEW OF SOUTHEAST WINGWALL; NOTE TREE

AND VEGETATION GROWTH

PHOTO #9 - CRACKING OF GROUT IN

VERTICAL JOINT BETWEEN SOUTHEAST

WINGWALL AND SOUTH ENDWALL

PHOTO #10 - TYPICAL STAINING AND

EFFLORESCENCE ON EAST HEADWALL; NOTE

VEGETATION GROWTH

PHOTO #11 - SEDIMENT ACCUMULATION IN SOUTH BARREL, EAST END

SHOWN

PHOTO #12 - EXPOSED FLOOR SLAB IN CENTER BARREL AT

UPSTREAM END

PHOTO #13 - SEDIMENT ACCUMULATION AT EAST END OF NORTH

BARREL; NOTE EXPOSED FLOOR SLAB

PHOTO #14 - TYPICAL SCALING OF FLOOR SLAB, EAST END OF

CENTER BARREL SHOWN

PHOTO #15 - SPALLING OF NORTH ENDWALL

NEAR EAST END

PHOTO #16 - TYPICAL STAINING AND

EFFLORESCENCE ON WEST HEADWALL; NOTE

VEGETATION GROWTH

PHOTO #17 - TYPICAL DETERIORATION OF HEADWALL MORTAR

JOINTS, WEST HEADWALL OVER CENTER BARREL SHOWN

PHOTO #18 - TYPICAL EFFLORESCENCE AND LEAKAGE ALONG

CONSTRUCTION JOINTS, CENTER BARREL SHOWN

PHOTO #19 - TYPICAL CRACKING WITH EFFLORESCENCE AND

LEAKAGE ON SLAB UNDERSIDE, SOUTH BARREL SHOWN

PHOTO #20 - CRACKING WITH EFFLORESCENCE AND LEAKAGE ON

SLAB UNDERSIDE, SOUTH BARREL SHOWN

PHOTO #21 - SPALLING WITH EXPOSED REBAR DUE TO INSUFFICIENT

COVER ON NORTH INTERMEDIATE WALL OF SOUTH BARREL NEAR

WEST END

PHOTO #22 - SEDIMENT ACCUMULATION ALONG WEST WEEP HOLES IN

SOUTH ENDWALL

PHOTO #23 - GENERAL VIEW OF SOUTHWEST

WINGWALL; NOTE TREE AND VEGETATION

GROWTH

PHOTO #24 - CRACKING OF GROUT IN JOINT

BETWEEN SOUTHWEST WINGWALL AND

SOUTH ENDWALL; NOTE SEPARATION

PHOTO #25 - SEDIMENT ACCUMULATION AT DOWNSTREAM END OF

CULVERT

PHOTO #26 - SLOUGHING ALONG SOUTH DOWNSTREAM CHANNEL

BANK

PHOTO #27 - UPSTREAM CHANNEL; NOTE BEAVER DAM REMOVED

FROM UTILITY PIPE

PHOTO #28 - DOWNSTREAM CHANNEL