Bridge Inspection Rpt_STR 5460-002P.pdf

STRUCTURE SUMMARY STRUCTURE NO. 5460-002P

WEST PRONG LPR BRIDGE AT CHIMNEYS PICNIC AREA INSPECTION DATE: 6/21/18

BRIDGE IDENTIFICATION AND DESCRIPTION

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

MAIN SPAN TYPE: ............... ARCH - DECK NO. OF APPR. SPANS:

# OF BEAMS, MAIN SPAN: .. 1 STRUCT. TOTAL LENGTH: .. 81.7 FT (24.9 M)

DECK TYPE: ......................... NOT APPLICABLE MAX. SPAN LENGTH: .......... 81.7 FT (24.9 M)

WEARING SURFACE: .......... NOT APPLICABLE DECK WIDTH: ...................... 41.5 FT (12.6 M)

ABUT. FOUNDATIONS: ........ SPREAD FTG ON BEARING MAT'L CURB TO CURB WIDTH: ..... 37.5 FT (11.4 M)

PIER FOUNDATION(S): ........ N/A YEAR BUILT:

ABUTMENT / PIER MAT'L: ... CONCRETE YEAR RECONSTRUCTED: .. N/A

PROJ./PLAN REF. NO: ......... 1A2 / 1119A SKEW ANGLE: ..................... 0 °

NPS ROAD CLASS: .............. 1 - PRINCIPAL PARK ROAD FRACTURE CRITICAL: ........ NO

STRUCTURE HISTORY: ...... 2013 - ROADWAY REPAVED.

LOCATION

GREAT SMOKY MOUNTAINS NATIONAL PARK MILE POINT: ..................... 6.30 (KM PT 10.14)

STATE: ................................. TENNESSEE LOCATION: 4.5 MILES SOUTH OF SUGARLANDS VISITOR CENTER OR 8.4 MILES NORTHWEST FACILITY CARRIED: ............ NEWFOUND GAP ROAD

FROM NEWFOUND GAP.

FEATURE INTERSECTED: .. WEST PRONG LPR

STRUCTURE EVALUATION SUMMARY

This concrete arch bridge is in good condition overall. The main problem with this bridge is moderate scour which has exposed the footing for the south abutment. Other problems include deteriorated joint material in vertical expansion joints; exposed rebar on arch underside; fallen trees and debris accumulation in channel; a lack of object markers at the bridge corners; and vine growth on the wingwalls.

Since the last inspection the collision damage to the northwest wingwall was repaired.

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

INSPECTION TEAM: B. BUMPERS, T. POWELL (VOLKERT, INC.)

CONDITION ASSESSMENT:

BRITT BUMPERS, P.E., FIELD TEAM LEADER

REPORT REVIEW:

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

REPORT APPROVAL: DATE: 11/8/18

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

RECOMMENDATIONS AND ESTIMATED COSTS STRUCTURE NO. 5460-002P

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

60.6 REMOVE VINE GROWTH FROM WINGWALLS. 1 LS

222.7 INSTALL REFLECTIVE OBJECT MARKERS AT BRIDGE CORNERS. 4 EA

PRELIM. MAINTENANCE TOTAL :

ITEM

NO.

REHABILITATION/RECONSTRUCTION

(TYPICALLY NEEDED WITHIN 5 YEARS)

QTY. UNIT

UNIT

COST

PRELIM. COST

ESTIMATES

REHAB. RECONSTR.

59.3 CLEAN EXPOSED REBAR ON ARCH UNDERSIDE AND COAT WITH

APPROVED SEALANT.

1 LS

60.9 REPAIR SCOUR AT SOUTH ABUTMENT WITH ENGINEERED RIPRAP. 1 LS

60.8 CLEAN AND RESEAL VERTICAL JOINTS BETWEEN WINGWALLS AND

SPANDREL WALLS.

1 LS

61.4 REMOVE FALLEN TREES AND FLOOD DEBRIS FROM CHANNEL. 1 LS

CONTRACT COSTS FOR MOBILIZATION, TRAFFIC CONTROL,

DESIGN, AND CONSTRUCTION ENGINEERING.

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. 5460-002P

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

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.

N

N N G N N N N G G

N G

G G N F G G

N

N

N

N

58.6 MINOR TO MODERATE DETERIORATION OF PARAPET MASONRY

MORTAR JOINTS; MINOR VEGETATION GROWTH IN SOME JOINTS.

MINOR MOSS GROWTH ON PARAPETS.

58.8 UTILITY LINE ACROSS FACE OF NORTH ABUTMENT.

59.3,8 MINOR TRANSVERSE AND LONGITUDINAL CRACKING OF ARCH

UNDERSIDE WITH EFFLORESCENCE AND WATER LEAKAGE ALONG

CONSTRUCTION JOINTS. MINOR SPALLING WITH EXPOSED REBAR

AT NUMEROUS LOCATIONS ON ARCH UNDERSIDE; MINOR

HONEYCOMBING AT ISOLATED LOCATIONS.

MODERATE TO HEAVY EFFLORESCENCE ON MASONRY RING

STONES; MINOR TO MODERATE EFFLORESCENCE AND MINOR

VEGETATION GROWTH ON SPANDREL WALLS.

60.1 MODERATE EFFLORESCENCE ON NORTH ABUTMENT BREASTWALL

MASONRY; MINOR ON SOUTH. ACTIVE LEAKAGE THROUGH SOUTH

ABUTMENT BREASTWALL MASONRY.

60.5,9 MINOR TO MODERATE SCOUR AT SOUTH ABUTMENT. FOOTING

EXPOSED APPROXIMATELY 19" D X 14' L AT UPSTREAM SIDE OF

SOUTH ABUTMENT. MODERATE SPALLING AND SEVERE SCALING

OF SOUTH ABUTMENT FOOTING.

MINOR EROSION OF SLOPE AT SOUTHWEST WINGWALL.

60.6 MINOR TO MODERATE VINE GROWTH ON SOUTHWEST WINGWALL;

MINOR ON NORTHEAST WINGWALL. MODERATE MOSS GROWTH ON

WINGWALLS. MINOR CRACKING WITH EFFLORESCENCE ALONG

EAST WINGWALLS.

60.8 HEAVY VEGETATION GROWTH IN VERTICAL JOINTS. MODERATE TO

SEVERE DETERIORATION OF NORTHEAST AND SOUTHWEST

VERTICAL JOINT FILLER MATERIAL.

1. BREASTWALLS OR COLUMNS G

2. PILE BENTS N

3. CAPS AND/OR BEARING SEATS N

4. BACKWALLS AND/OR BULKHEADS N

5. FOUNDATIONS (CONCRETE FTG) F

6. WINGWALLS G

7. WEEP HOLES G

8. EXPANSION JOINTS F

9. EROSION AND/OR SCOUR F

10. SETTLEMENT OR DEFLECTION G

11. SLOPE PROTECTION N

12. OTHER N

PIER(S)

N13. WALLS AND/OR COLUMNS

N14. PILE BENTS

N15. CAPS AND/OR BEARING SEATS

N16. FOUNDATIONS

N17. EROSION AND/OR SCOUR

N18. SETTLEMENT OR DEFLECTION

N19. OTHER

FIELD INSPECTION REPORT STRUCTURE NO. 5460-002P

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 7

G G N F

G(FLOOD GAUGE)

HIGH

SUFF

17 FT.

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 F 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

61.2 SEE BRIDGE FILE FOR SCOUR EVALUATION.

61.4 MODERATE ACCUMULATION OF DEBRIS ON CHANNEL BANKS AND

AGAINST WEST WINGWALLS.

MODERATE ACCUMULATION OF DRIFT AND TREES IN UPSTREAM

CHANNEL. LARGE FALLEN TREES AND FLOOD DEBRIS ON SOUTH

DOWNSTREAM CHANNEL BANK.

61.5 FLOOD GAUGE/HIGH WATER MARKER ATTACHED TO NORTH

ABUTMENT, EAST SIDE.

222.3 TIMBER GUARDRAIL AT EAST SIDE OF NORTH APPROACH ONLY.

222.7 REFLECTIVE OBJECT MARKERS NOT PROVIDED AT APPROACHES.

222.8 BRIDGE IN SHARP HORIZONTAL CURVE.

36.A,B,C STONE MASONRY PARAPET ON WEST SIDE HEIGHT OF 2'-3"; DOES

NOT MEET CURRENT SAFETY STANDARDS FOR TRAFFIC BARRIERS.

NEW APPROACH GUARDRAIL WITH A HEIGHT OF 2'-8" AT

NORTHEAST CORNER ONLY; HOWEVER, GUARDRAIL IS NOT

ATTACHED TO BRIDGE PARAPET.

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. 5460-002P

TRUCK TYPE

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

TONS METRIC TONS TONS METRIC TONS

H 21 19 35 32

HS 33 30 55 50

TYPE 3 27 24 45 41

TYPE 3S2 49 44 81 73

TYPE 3-3 54 49 91 83

DESIGN LOADING: UNKNOWN

X CAPACITY MEETS OR EXCEEDS DESIGN LOAD

CAPACITY IS LESS THAN DESIGN LOAD

X ORIGINAL LOAD RATING CALCULATION APPLICABLE

ORIGINAL LOAD RATING CALCULATION REVISED

DATE OF LOAD RATING CALCULATION: 5/16

LOAD RATING CONTROLLED BY: MOMENT

REMARKS: SEE BRIDGE FILE FOR LOAD RATING CALCULATIONS.

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 5460-002P

STRUCTURE IDENTIFICATION

(201) PARK: GREAT SMOKY MOUNTAINS NATIONAL PARK

(202) STRUCTURE NAME: .......... WEST PRONG LPR BRIDGE AT CHIMNEY

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

(204) STRUCTURE NUMBER: ..... 5460-002P

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

(206) ROUTE CODE NUMBER: ... 10

(207) ROAD SECTION NO: ..........002P

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

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

(210) OPERATING UNIT: ............. N. DIST.

(211) PROJECT NO(S): ................1A2

(212) DRAWING NUMBERS: ....... 1119A

(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: ..

474 - TENNESSEE (TN)

155 - SEVIER

167000100

WEST PRONG LPR

NEWFOUND GAP ROAD

5460002P0000000

4.5 MILES SOUTH OF SUGAR

99.99 FT (99.99 M)

6.30 (KM PT 10.14)

N/A

3 - FREE ROAD

3 - POSSIBLY 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

11 - ARCH - DECK

81.7 FT (24.9 M)

81.7 FT (24.9 M)

2 - SPREAD FTG ON BEARING MAT'L

2 - SPREAD FTG ON BEARING MAT'L

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: .. N - NOT APPLICABLE

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

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

(218) IS SALT USED?: ..................... YES

LOAD RATING AND POSTING

(31) DESIGN LOAD: ................. 0 - UNKNOWN (41) LOAD RESTRICTION: ......... A - OPEN, NO RESTRICTION

(66) INVENTORY RATING: ...... 33.0 TONS (29.9 METRIC TONS) (70) BRIDGE POSTING: .............. 5 - NO POSTING REQUIRED

(64) OPERATING RATING: ...... 55.0 TONS (49.9 METRIC TONS)

INSPECTION DATES

(90) INSPECTION DATE: 6/18 (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. 5460-002P

GEOMETRY, TRAFFIC, AND NAVIGATIONAL DATA

(16) LATITUDE: ............................. 35°38'14.70"

(17) LONGITUDE: ......................... 83°29'35.70"

(19) DETOUR LENGTH: ............... 90 MI (145 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:

37.5 FT (11.4 M)

41.5 FT (12.6 M)

36.0 FT (11.0 M)

28.0 FT (8.5 M)

4.0 FT (1.2 M)

4.0 FT (1.2 M)

0 - NO MEDIAN

0 °

NO

37.5 FT (11.4 M)

0.0 FT (0.0 M)

0.0 FT (0.0 M)

3 - PARAPET ONLY

9 - OTHER

1 - CONTINUOUS RAIL

1.50 FT (0.46 M)

99.99 FT (99.99 M)

0.00 FT (0.00 M)

CONDITION AND APPRAISAL DATA, PROPOSED IMPROVEMENTS, AND COST

(58) DECK: ................................. N

(59) SUPERSTRUCTURE:

(60) SUBSTRUCTURE:

(61) CHANNEL:

(62) CULVERT: ...........................N

(222) APPROACHES:

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

(36) TRAFFIC SAFETY FEAT: ... 001N

(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

4 - Stable; action required to pro

2 - REHAB/RECONSTRUCTION

C - MODERATE

ADDITIONAL INFORMATION

(230) STRUCTURE HISTORY:

2013 - ROADWAY REPAVED.

(231) ADDITIONAL CONSIDERATIONS:

(330) ADDITIONAL CONFIG. INFO.:

https://83�29'35.70 https://35�38'14.70

APPENDIX STRUCTURE NO. 5460-002P

PHOTOGRAPHS STRUCTURE NO. 5460-002P

PHOTO #1 - LOOKING SOUTH TOWARD NEWFOUND GAP

FLOW

PHOTO #2 - EAST (DOWNSTREAM) SIDE

PHOTO #3 - GENERAL TOP SIDE LOOKING NORTH

PHOTO #4 - GENERAL UNDERSIDE VIEW LOOKING NORTH

PHOTO #5 - TYPICAL DETERIORATION AND VEGETATION GROWTH AT

PARAPET MORTAR JOINTS

PHOTO #6 - REPAIRED COLLISION DAMAGE TO END OF NORTHWEST

WINGWALL

PHOTO #7 - GENERAL VIEW OF SOUTH ABUTMENT

PHOTO #8 - MOSS AND VINE GROWTH ON SOUTHWEST WINGWALL

PHOTO #9 - ACTIVE LEAKAGE AND EFFLORESCENCE THROUGH SOUTH

ABUTMENT BREASTWALL MASONRY

PHOTO #10 - SCOUR WITH EXPOSED FOOTING ON UPSTREAM SIDE OF

SOUTH ABUTMENT; NOTE SPALLING AND SCALING OF FOOTING

PHOTO #11 - TYPICAL EFFLORESCENCE ON EAST MASONRY RING

STONES AT SOUTH END

PHOTO #12 - TYPICAL EFFLORESCENCE ON WEST RING STONES AND

ARCH UNDERSIDE ALONG CONSTRUCTION JOINTS

PHOTO #13 - TYPICAL TRANSVERSE AND LONGITUDINAL CRACKING

WITH EFFLORESCENCE ON ARCH UNDERSIDE, NORTH END OF SPAN

NEAR EAST SIDE SHOWN

PHOTO #14 - GENERAL VIEW OF NORTH ABUTMENT

PHOTO #15 - TYPICAL EXPOSED REBAR ON ARCH UNDERSIDE NEAR

NORTH ABUTMENT

PHOTO #16 - TYPICAL DROP INLET THROUGH ARCH UNDERSIDE

PHOTO #17 - SPALLING WITH EXPOSED REBAR ON ARCH UNDERSIDE

NEAR MIDSPAN

PHOTO #18 - FALLEN TREES AND FLOOD DEBRIS IN UPSTREAM

CHANNEL

PHOTO #19 - LOOKING UPSTREAM FROM DECK

PHOTO #20 - LOOKING DOWNSTREAM FROM DECK, NOTE FALLEN

TREES AND FLOOD DEBRIS ON SOUTH DOWNSTREAM CHANNEL BANK