Bridge Inspection Rpt_STR 5460-033P.pdf

STRUCTURE SUMMARY STRUCTURE NO. 5460-033P

FORGE CREEK BRIDGE #1 INSPECTION DATE: 6/19/18

BRIDGE IDENTIFICATION AND DESCRIPTION

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

MAIN SPAN TYPE: ............... STRINGER/MULTI-BEAM or GIRDER NO. OF APPR. SPANS:

# OF BEAMS, MAIN SPAN: .. 2 STRUCT. TOTAL LENGTH: ..

DECK TYPE: ......................... WOOD OR TIMBER MAX. SPAN LENGTH:

WEARING SURFACE: .......... NONE DECK WIDTH:

ABUT. FOUNDATIONS: ........ SPREAD FTG ON BEARING MAT'L CURB TO CURB WIDTH:

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

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

PROJ./PLAN REF. NO: ......... 3B15 / NONE SKEW ANGLE:

NPS ROAD CLASS: .............. 2 - CONNECTOR ROAD FRACTURE CRITICAL:

STRUCTURE HISTORY: ...... 1995-CONCRETE FOOTING APRONS PLACED.

LOCATION

34.7 FT (10.6 M)

34.7 FT (10.6 M)

12.1 FT (3.7 M)

11.1 FT (3.4 M)

0 °

YES

GREAT SMOKY MOUNTAINS NATIONAL PARK MILE POINT: ..................... 1.50 (KM PT 2.41)

STATE: ................................. TENNESSEE LOCATION: 1.7 MILES TO NPS ROUTE 50

FACILITY CARRIED: ............ FORGE CREEK ROAD

FEATURE INTERSECTED: .. FORGE CREEK

STRUCTURE EVALUATION SUMMARY

This weathering steel beam bridge is located on Forge Creek Road, which is currently posted for a 5-ton weight limit.

This structure is in poor condition overall. The main problem with this bridge is severe section loss along the bottom flanges of the steel beams, with less than 1/8" thickness remaining in some areas and down to knife edge at several locations. Additionally, there is rutting of the deck planks. Other problems include full height cracking of the southwest, northwest, and northeast wingwalls with several stones missing from the north abutment breastwall.

There are also damaged and decayed curb sections at the south end; and debris accumulation on the deck and on the bearing seats resulting in rusting of the bearing clip angles.

This bridge is scheduled for replacement in the near future under Project GRSM 14(3), 112(1).

INSPECTION TEAM: M. BURNETT, C. BOSS (VOLKERT, INC.)

CONDITION ASSESSMENT:

MATT BURNETT, 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. 5460-033P

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.

B226 PRIORITY OF IMPROVEMENT

ITEM

NO.

ROUTINE MAINTENANCE QTY. UNIT UNIT

COST

PRELIM.

COST

ESTIMATE

PRELIM. MAINTENANCE TOTAL :

ITEM

NO.

REHABILITATION/RECONSTRUCTION

(TYPICALLY NEEDED WITHIN 5 YEARS)

QTY. UNIT

UNIT

COST

PRELIM. COST

ESTIMATES

REHAB. RECONSTR.

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: This bridge is scheduled for replacement in the near future under Project GRSM 14(3), 112(1).

FIELD INSPECTION REPORT STRUCTURE NO. 5460-033P

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.

F P N N N F N N G

N G

N F F N P N

N

N

G

F

58.1,4 2" X 8" (NOMINAL) SOUTHERN YELLOW PINE NAIL-LAMINATED DECK.

MODERATE TO SEVERE RUTTING AND DETERIORATION OF TIMBER

DECK IN WHEEL PATHS; LONGITUDINAL TIE ROD PREVIOUSLY

EXPOSED UP TO 11" AT SOUTHWEST CORNER, HAS NOW BEEN

COVERED WITH GRAVEL. MINOR DETERIORATION AT SEVERAL

PLANK ENDS. FOUR (4) RANDOMLY LOCATED DECK PLANKS

BROKEN IN OVERHANG AREAS. CHECKS AND SPLITS AT ENDS OF

DECK PLANKS.

MINOR MOSS GROWTH ON DECK EDGES. ASPHALT ON NORTH END

OF DECK.

58.5 MINOR CHECKING, SPLITTING, AND MINOR TO MODERATE DECAY

OF TIMBER CURBS. MINOR TO MODERATE MOSS GROWTH ON TOP

OF CURBS. SOUTHEAST CORNER HAS MODERATE COLLISION

DAMAGE; MINOR AT SOUTHWEST.

58.7 MODERATE GRAVEL AND DEBRIS ACCUMULATION ALONG CURBS

AND BETWEEN WHEEL PATHS.

UNDERSIDE MOIST AT TIME OF INSPECTION.

59.1, 60.3 MINOR TO MODERATE DEBRIS ACCUMULATION ON BEARING SEATS

CONTRIBUTING TO RUSTING AND SECTION LOSS FROM BEARING

CLIP ANGLES.

59.2,6 A588 WEATHERING STEEL. LAMINAR RUSTING RESULTING IN

MODERATE TO SEVERE SECTION LOSS FROM WEATHERING STEEL.

0.394" REMAINING IN WEB 13' FROM NORTH ABUTMENT. TYPICALLY

1/8" REMAINING BOTTOM FLANGE SECTION AT NUMEROUS

LOCATIONS; BOTTOM FLANGE DOWN TO KNIFE EDGE AT SEVERAL

LOCATIONS.

60.1 NORTH ABUTMENT MISSING SEVERAL STONES; MODERATE

DETERIORATION OF MASONRY MORTAR JOINTS.

60.5,9 ABUTMENT FOOTINGS EXPOSED UP TO 2.0'; NO UNDERMINING

NOTED.

1. BREASTWALLS OR COLUMNS F

2. PILE BENTS N

3. CAPS AND/OR BEARING SEATS G

4. BACKWALLS AND/OR BULKHEADS N

5. FOUNDATIONS G

6. WINGWALLS F

7. WEEP HOLES N

8. EXPANSION JOINTS N

9. EROSION AND/OR SCOUR F

10. SETTLEMENT OR DEFLECTION F

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. 5460-033P

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 5

G F N F N

MED

INSUFF

5 FT.

ROCK, SAND, STONES

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 G G 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 N N N

60.6,10 MINOR TO MODERATE DETERIORATION OF MORTAR JOINTS AT

WINGWALLS. MINOR TO MODERATE STEP CRACKS IN WINGWALLS

DUE TO SETTLEMENT; 1-1/2" W AT SOUTHWEST, 1" W AT

NORTHWEST, AND 1/2" W AT NORTHEAST.

61.2 MODERATE EROSION OF CHANNEL BANK ADJACENT TO

SOUTHEAST WINGWALL.

61.2 SEE BRIDGE FILE FOR SCOUR EVALUATION.

61.4,6 ABUTMENTS CONSTRICT CHANNEL SLIGHTLY. FALLEN TREES AND

MINOR DEBRIS IN UPSTREAM CHANNEL.

222.4,6 MINOR SETTLEMENT AT BOTH APPROACHES WITH MODERATE

RUTTING (3.5") IN WHEEL PATHS AT APPROACHES. NUMEROUS

POTHOLES AT BOTH APPROACHES.

222.5 MINOR EROSION AT SOUTHWEST APPROACH EMBANKMENT.

222.7 OBJECT MARKERS AT ALL FOUR CORNERS. ROAD POSTED FOR 5

TON LOAD LIMIT.

222.8 SHARP CURVE AT SOUTH END.

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. 5460-033P

TRUCK TYPE

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

TONS METRIC TONS TONS METRIC TONS

H 10 9 16 15

HS 14 13 23 21

TYPE 3 12 11 20 18

TYPE 3S2 19 17 30 27

TYPE 3-3 24 22 40 36

DESIGN LOADING: UNKNOWN

CAPACITY MEETS OR EXCEEDS DESIGN LOAD

X CAPACITY IS LESS THAN DESIGN LOAD

ORIGINAL LOAD RATING CALCULATION APPLICABLE

X ORIGINAL LOAD RATING CALCULATION REVISED

DATE OF LOAD RATING CALCULATION: 10/10

LOAD RATING CONTROLLED BY: BEAM MOMENT CAPACITY

REMARKS: SEE BRIDGE FILE FOR LOAD RATING CALCULATIONS.

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 5460-033P

STRUCTURE IDENTIFICATION

(201) PARK: GREAT SMOKY MOUNTAINS NATIONAL PARK (1) STATE: ....................................... 474 - TENNESSEE (TN)

(202) STRUCTURE NAME: .......... FORGE CREEK BRIDGE #1 (2) STATE HWY. AGENCY DIST:

(203) STRUCTURE KIND: ............1 - BRIDGE (3) COUNTY CODE: ........................ 009 - BLOUNT

(204) STRUCTURE NUMBER: ..... 5460-033P (4) CITY/PLACE CODE:

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

(206) ROUTE CODE NUMBER: ... 126 (6) FEATURES INTERSECTED:....... FORGE CREEK

(207) ROAD SECTION NO: ..........033P (7) FACILITY CARRIED: .................. FORGE CREEK ROAD

(208) NPS ROAD CLASS: ............ 2 - CONNECTOR ROAD (8) STATE STRUCTURE NO: .......... 5460033P0000000

(209) WITHIN NPS BNDRY?: .......YES (9) LOCATION: ................................ 1.7 MILES TO NPS ROUTE 50

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

(211) PROJECT NO(S): ................3B15 (11) MILE POINT: .............................1.50 (KM PT 2.41)

(212) DRAWING NUMBERS: ....... NONE (27) YEAR BUILT:

(21) MAINTAINED BY: ................. 66 - NATIONAL PARK SERVICE (106) YEAR RECONSTRUCTED:

(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:

3 - STEEL

02 - STRINGER/MULTI-BEAM or GIRDER

34.7 FT (10.6 M)

34.7 FT (10.6 M)

2 - SPREAD FTG ON BEARING MAT'L

2 - SPREAD FTG ON BEARING MAT'L

6 - N/A

6 - N/A

8 - WOOD OR TIMBER

(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: ................. 0 - UNKNOWN (41) LOAD RESTRICTION: ......... P - POSTED FOR LOAD

(66) INVENTORY RATING: ...... 14.3 TONS (13.0 METRIC TONS) (70) BRIDGE POSTING: .............. 2 - POSTING REQUIRED

(64) OPERATING RATING: ...... 23.0 TONS (20.9 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: ... YES

INSP. EVERY: 24 MONTHS - LAST INSP. : 6/18 (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. 5460-033P

GEOMETRY, TRAFFIC, AND NAVIGATIONAL DATA

(16) LATITUDE: ............................. 35°34'14.70"

(17) LONGITUDE: ......................... 83°50'52.30"

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

(28A) LANES ON STRUCT:

(28B) LANES UNDER STRUCT: ... 00

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

(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:

11.1 FT (3.4 M)

12.1 FT (3.7 M)

17.0 FT (5.2 M)

11.0 FT (3.4 M)

3.0 FT (0.9 M)

3.0 FT (0.9 M)

0 - NO MEDIAN

0 °

NO

11.1 FT (3.4 M)

0.0 FT (0.0 M)

0.0 FT (0.0 M)

4 - CURB-TYPE WHEEL GUAR

7 - TIMBER

1 - CONTINUOUS RAIL

0.83 FT (0.25 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: ........... N

(36) TRAFFIC SAFETY FEAT: ... NNNN

(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

1 - MAINTENANCE

B - MAJOR

ADDITIONAL INFORMATION

(230) STRUCTURE HISTORY:

1995-CONCRETE FOOTING APRONS PLACED.

(231) ADDITIONAL CONSIDERATIONS:

(330) ADDITIONAL CONFIG. INFO.:

APPENDIX STRUCTURE NO. 5460-033P

PHOTOGRAPHS STRUCTURE NO. 5460-033P

PHOTO #1 - LOOKING SOUTH TOWARD PARSONS BRANCH ROAD

FLOW

PHOTO #2 - EAST (UPSTREAM) SIDE

PHOTO #3 - GENERAL TOP SIDE VIEW LOOKING NORTH

PHOTO #4 - GENERAL UNDERSIDE VIEW LOOKING NORTH

PHOTO #5 - RUTTING OF NORTH APPROACH

PHOTO #6 - POTHOLES IN NORTH APPROACH

PHOTO #7 - TYPICAL DECK DETERIORATION AND RUTTING IN WHEEL

PATHS; NOTE GRAVEL ACCUMULATION

PHOTO #8 - COLLISION DAMAGE AT SOUTH END OF EAST CURB

PHOTO #9 - TYPICAL WEATHERING OF CURBS, SOUTH END OF WEST

CURB SHOWN

PHOTO #10 - GENERAL VIEW OF SOUTH APPROACH; NOTE RUTTING

PHOTO #11 - GENERAL VIEW OF NORTH ABUTMENT; NOTE EXPOSED

FOOTING

PHOTO #12 - TYPICAL RUSTING AND SECTION LOSS FROM BEARING

CLIP ANGELS, NORTHEAST BEARING SHOWN

PHOTO #13 - MISSING STONE FROM EAST SIDE OF NORTH ABUTMENT;

NOTE DETERIORATION OF MORTAR JOINTS

PHOTO #14 - STEP CRACKING OF NORTHEAST WINGWALL

PHOTO #15 - STEP CRACKING OF NORTHWEST WINGWALL

PHOTO #16 - TYPICAL SECTION LOSS FROM BOTTOM FLANGES, WEST

BEAM SHOWN

PHOTO #17 - TYPICAL LAMINAR RUSTING OF BEAMS RESULTING IN

SECTION LOSS, WEST BEAM SHOWN

PHOTO #18 - TYPICAL DEBRIS ACCUMULATION ON BEARINGS SEATS,

SOUTH END OF WEST BEAM SHOWN

PHOTO #19 - SECTION LOSS FROM EAST BEAM BOTTOM FLANGE NEAR

SOUTH ABUTMENT, EAST SIDE SHOWN

PHOTO #20 - SECTION LOSS FROM EAST BEAM BOTTOM FLANGE NEAR

SOUTH ABUTMENT, WEST SIDE SHOWN

PHOTO #21 - TYPICAL DECAY AND SPLITTING OF DECK PLANK ENDS,

WEST SIDE SHOWN; NOTE MOSS GROWTH

PHOTO #22 - GENERAL VIEW OF SOUTH ABUTMENT; NOTE EXPOSED

FOOTING

PHOTO #23 - EROSION OF SOUTH UPSTREAM CHANNEL BANK

ADJACENT TO SOUTHEAST WINGWALL

PHOTO #24 - LOOKING UPSTREAM FROM DECK

PHOTO #25 - LOOKING DOWNSTREAM FROM DECK; NOTE DRIFT