Bridge_Inspection_Report_STR_5460-093P.pdf

STRUCTURE SUMMARY STRUCTURE NO. 5460-093P

COLLINS CREEK CULVERT INSPECTION DATE: 5/25/17

CULVERT IDENTIFICATION AND DESCRIPTION

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

FOUNDATION: ....................... SPREAD FTG ON BEARING MAT'L BARREL LENGTH: ............... 53 FT (16 M)

STRUCT. TOTAL LENGTH: ... 22.5 FT (6.9 M) SKEW ANGLE: ..................... 0 °

MAX. SPAN LENGTH: ............ 7.2 FT (2.2 M) YEAR BUILT:

PROJ./PLAN REF. NO: .......... 000000000000 / NONE YEAR RECONSTRUCTED: .. N/A

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

STRUCTURE HISTORY: ....... 2011 - STRUCTURE WIDENED, NEW EAST HEADWALL AND WINGWALLS, ROADWAY

REPAVED AND RESTRIPED.

LOCATION

GREAT SMOKY MOUNTAINS NATIONAL PARK MILE POINT: ..................... 29.58 (KM PT 47.60)

STATE: .................................. NORTH CAROLINA LOCATION: 10.7 MILES SOUTH OF NEWFOUND GAP; IMMEDIATELY SOUTH OF ENTRANCE ROAD FACILITY CARRIED: ............. NEWFOUND GAP ROAD

TO COLLINS CREEK PICNIC AREA.

FEATURE INTERSECTED: ... COLLINS CREEK

STRUCTURE EVALUATION SUMMARY

This triple barrel concrete culvert is in fair structural condition. The structure has been widened twice in its history.

Site-related problems include an accumulation of rocks and gravel in the north and center barrels; the accumulation effectively redirects the channel flow through the south barrel.

There is also moderate erosion behind the southwest wingwall, and along the south downstream channel bank with a fallen tree across the channel. The concrete apron is exposed up to 8" at the downstream end, and up to 3" at the upstream end; no undermining was noted, however.

Additional problems include widespread moderate scaling with exposed rebar on the floor of the two older portions of the barrels; spalling with exposed rebar on the top slab underside in the south barrel; and exposed form ties in the center barrel. In addition, culvert markers are not provided.

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

INSPECTION TEAM: R. SILVESTRY, L. ELLIS

CONDITION ASSESSMENT:

REINALDO SILVESTRY, FIELD TEAM LEADER 703-404-6251

REPORT REVIEW:

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

REPORT APPROVAL: DATE: 10/4/17

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

RECOMMENDATIONS AND ESTIMATED COSTS STRUCTURE NO. 5460-093P

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.

MAINTENANCE RECOMMENDATIONS

(GENERALLY NOT FLHP ELIGIBLE)

QTY. UNIT COST

UNIT

ESTIMATE

COST

PRELIM.

61.4, 62.5 REMOVE ROCK AND GRAVEL ACCUMULATION FROM NORTH AND CENTER

BARRELS.

1 LS

62.1 CLEAN AND SEAL EXPOSED REBAR ON TOP SLAB OF SOUTH BARREL, EXPOSED

FORM TIES IN CENTER BARREL AND EXPOSED REBAR ON FLOOR OF TWO OLDER

PORTIONS WITH APPROVED PROTECTIVE COATING.

7 SF

222.7 INSTALL REFLECTIVE OBJECT MARKERS. 4 EA

PRELIM. MAINTENANCE TOTAL :

ITEM

NO.

REHABILITATION/RECONSTRUCTION

(TYPICALLY NEEDED WITHIN 5 YEARS)

QTY. UNIT

UNIT

COST ESTIMATES

PRELIM. COST

REHAB. RECONSTR.

62.6 PLACE SCOUR COUNTERMEASURES ALONG SOUTHWEST

WINGWALL, DOWNSTREAM APRON, AND ALONG SOUTH

DOWNSTREAM CHANNEL BANK TO PREVENT FURTHER SCOUR

1 LS

CONTRACT COSTS FOR MOBILIZATION, TRAFFIC CONTROL, AND

DESIGN 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. 5460-093P

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.

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 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

F F N F

4 FT.

HIGH

SUFF

N

ITEM REFERENCE AND REMARKS

62. CULVERT 6

PARAPETS AND/OR RAILINGS 9.

ADEQUACY OF COVER 8.

SETTLEMENT AND/OR DEFLECTION 7.

EROSION AND/OR SCOUR 6.

DEBRIS AND/OR SILT 5.

WINGWALLS 4.

HEADWALLS 3.

FOOTINGS 2.

BARREL(S)1.

ROADWAY SURFACE 10.

RIDEABILITY 11.

OTHER 12. (STRIPING)

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

222. APPROACHES 7

OTHER 9.

ALIGNMENT 8.

SIGNS 7.

SETTLEMENT 6.

EROSION 5.

SURFACING 4.

APPROACH GUARDRAIL 3.

RELIEF JOINTS 2.

1. APPROACH SLABS

(STRIPING)

N N N G G G N G G

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 GUARDRAILS C.

TRANSITIONS B.

BRIDGE RAILINGSA.

APPROACH GUARDRAIL ENDS D.

N N N N

GRAVEL, SAND, ROCK

61.1,2,4, STREAM FLOWS THROUGH SOUTH BARREL ONLY. HEAVY ROCK

62.5,6 AND GRAVEL ACCUMULATION IN NORTH AND CENTER BARRELS

FORCES FLOW THROUGH SOUTH BARREL. MODERATE EROSION

BEHIND SOUTHWEST WINGWALL. MODERATE EROSION ALONG

SOUTH DOWNSTREAM CHANNEL BANK HAS EXPOSED ROOTS OF

SEVERAL LARGE TREE STUMPS.

8" OF CONCRETE APRON EXPOSED AT DOWNSTREAM END OF

STRUCTURE; 3" EXPOSED AT UPSTREAM END. NO UNDERMINING

NOTED.

62.1 ORIGINAL STRUCTURE WAS ONCE WIDENED AND HAS BEEN

WIDENED AN ADDITIONAL 11' AT EAST END. OLDEST PORTION OF

STRUCTURE WALLS REMAIN IN GOOD CONDITION WITH ONLY

MINOR SCALING AT BOTTOM OF WALLS. BOTTOM OF BARREL

WALLS HAVE AREAS OF PREVIOUS PATCHING.

MINOR CRACKING WITH EFFLORESCENCE AND WATER LEAKAGE AT

CONSTRUCTION JOINTS. MINOR SPALL WITH EXPOSED REBAR ON

UNDERSIDE OF TOP SLAB, NEAR EAST END OF SOUTH BARREL.

FORM TIES REMAIN IN CENTER BARREL WALLS.

WIDESPREAD MODERATE SCALING OF CONCRETE FLOOR WITH

EXPOSED REBAR IN TWO OLDER PORTIONS OF STRUCTURE;

NEWEST PORTION HAS GROUTED STONE FLOOR.

62.3,4 MINOR VEGETATION GROWTH ON WEST HEADWALL. MODERATE

VEGETATION GROWTH ON WEST WINGWALLS.

222.7 NO REFLECTIVE OBJECT MARKERS PROVIDED.

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 13

STRUCTURE LOAD RATING STRUCTURE NO. 5460-093P

TRUCK TYPE

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

TONS METRIC TONS TONS METRIC TONS

H 15 14 25 23

HS 27 24 45 41

TYPE 3 31 28 52 47

TYPE 3S2 49 44 82 74

TYPE 3-3 60 54 100 91

DESIGN LOADING: UNKNOWN

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 ENGINEERING JUDGEMENT IN ACCORDANCE WITH AASHTO MANUAL FOR BRIDGE

EVALUATION (MBE).

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 5460-093P

STRUCTURE IDENTIFICATION

(201) PARK: GREAT SMOKY MOUNTAINS NATIONAL PARK (1) STATE: ....................................... 374 - NORTH CAROLINA (NC)

(202) STRUCTURE NAME: .......... COLLINS CREEK CULVERT (2) STATE HWY. AGENCY DIST:

(203) STRUCTURE KIND: ............ 2 - CULVERT (3) COUNTY CODE: ........................ 173 - SWAIN

(204) STRUCTURE NUMBER: ..... 5460-093P (4) CITY/PLACE CODE:

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

(206) ROUTE CODE NUMBER: ... 10 (6) FEATURES INTERSECTED:....... COLLINS CREEK

(207) ROAD SECTION NO: .......... 093P (7) FACILITY CARRIED: .................. NEWFOUND GAP ROAD

(208) NPS ROAD CLASS: ............ 1 - PRINCIPAL PARK ROAD (8) STATE STRUCTURE NO: .......... 5460093P0000000

(209) WITHIN NPS BNDRY?: ....... YES (9) LOCATION: ................................ 10.7 MILES SOUTH OF NEWF

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

(211) PROJECT NO(S): ................ 000000000000 (11) MILE POINT: ............................. 29.58 (KM PT 47.60)

(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:

1 - CONCRETE

19 - CULVERT

7.2 FT (2.2 M)

22.5 FT (6.9 M)

2 - SPREAD FTG ON BEARING MAT'L

2 - SPREAD FTG ON BEARING MAT'L

2 - SPREAD FTG ON BEARING MAT'L

2 - SPREAD FTG ON BEARING MAT'L

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: ................. N - NOT APPLICABLE

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

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

LOAD RATING AND POSTING

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

(66) INVENTORY RATING: ...... 27.0 TONS (24.5 METRIC TONS) (70) BRIDGE POSTING: .............. 5 - NO POSTING REQUIRED

(64) OPERATING RATING: ...... 45.1 TONS (40.9 METRIC TONS)

INSPECTION DATES

(90) INSPECTION DATE: 5/17 (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. :

APPENDIX STRUCTURE NO. 5460-093P

PHOTOGRAPHS STRUCTURE NO. 5460-093P

PHOTO #1 - LOOKING NORTH TOWARD NEWFOUND GAP

FLOW

PHOTO #2 - WEST (UPSTREAM) SIDE

PHOTO #3 - GENERAL TOPSIDE VIEW LOOKING SOUTH

PHOTO #4 - GENERAL VIEW OF CLEAR ZONE ON EAST SIDE; NOTE

LACK OF OBJECT MARKER

PHOTO #5 - GENERAL UNDERSIDE VIEW OF CENTER BARREL LOOKING

UPSTREAM; NOTE COBBLES ACCUMULATED ON BARREL FLOOR

PHOTO #6 - CRACKING AND EFFLORESCENCE ALONG CULVERT INSIDE

PERIMETER CONSTRUCTION JOINT; NORTH WALL OF NORTH BARRE

NEAR EAST END SHOWN

PHOTO #7 - SPALLING, CRACKING AND EFFLORESCENCE BUILDUP ON

AND ADJACENT TO CONSTRUCTION JOINTS; SOUTH WALL OF NORTH

BARREL SHOWN

PHOTO #8 - TYPICAL VEGETATION GROWN ALONG WINGWALLS;

SOUTHEAST SIDE SHOWN; NOTE DEBRIS IN BARREL CHANNEL

PHOTO #9 - VEGETATION AND SEDIMENT BUILD-UP ON UPSTREAM

(WEST) SIDE OF NORTH AND CENTER BARRELS

PHOTO #10 - EROSION AT END OF SOUTHWEST WINGWALL

PHOTO #11 - LOOKING UPSTREAM FROM ROADWAY OVER CULVERT

PHOTO #12 - LOOKING DOWNSTREAM FROM ROADWAY OVER

CULVERT