Bridge_Inspection_Report_STR_5460-091P.pdf

BRIDGE INSPECTION REPORT

COUCHES CREEK BRIDGE

NEWFOUND GAP ROAD OVER COUCHES CREEK

GREAT SMOKY MOUNTAINS NATIONAL PARK

LS

STRUCTURE NO. 5460-091P

INSPECTION TYPE: ROUTINE

INSPECTION DATE: 5/20/13

Report prepared by: ED

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

STRUCTURE SUMMARY STRUCTURE NO. 5460-091P

COUCHES CREEK BRIDGE INSPECTION DATE: 5/20/13

BRIDGE IDENTIFICATION AND DESCRIPTION

MAIN SPAN MATERIAL:

MAIN SPAN TYPE:

# OF BEAMS, MAIN SPAN: ..

DECK TYPE:

WEARING SURFACE:

ABUT. FOUNDATIONS:

PIER FOUNDATION(S):

ABUTMENT / PIER MAT'L: ...

PROJ./PLAN REF. NO:

NPS ROAD CLASS:

STRUCTURE HISTORY:

CONCRETE

FRAME

NOT APPLICABLE

BITUMINOUS

UNKNOWN

N/A

CONCRETE

000000000000 / NONE

1 - PRINCIPAL PARK ROAD

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:

16.0 FT (4.9 M)

16.0 FT (4.9 M)

34.0 FT (10.4 M)

22.6 FT (6.9 M)

N/A

0 °

NO

LOCATION

GREAT SMOKY MOUNTAINS NATIONAL PARK MILE POINT: ..................... 27.18 (KM PT 43.74)

STATE: ................................. NORTH CAROLINA LOCATION: 13.0 MILES SOUTH OF NEWFOUND

GAP.FACILITY CARRIED: ............ NEWFOUND GAP ROAD

FEATURE INTERSECTED: .. COUCHES CREEK

STRUCTURE EVALUATION SUMMARY

This concrete frame bridge is in good condition overall and has only minor problems at this time. These include debris accumulation in the upstream channel, a rock/gravel bar building up against the south abutment, and a lack of object markers at the ends of the parapet walls. Corrective measures should be made as outlined in this report to prevent the possible development of more serious or costly problems in the future.

It should also be noted that moderate scour at both abutments. Only minor scour was observed during this inspection, and riprap repairs are not recommended at this time. However, scour and erosion conditions will continue to be monitored during future inspections.

INSPECTION TEAM: M. BURNETT, T. POW ELL (VOLKERT, INC.)

CONDITION ASSESSMENT:

MATT BURNETT, FIELD TEAM LEADER

REPORT REVIEW :

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

REPORT APPROVAL: DATE: 10/30/13

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

RECOMMENDATIONS AND ESTIMATED COSTS STRUCTURE NO. 5460-091P

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.

60.6, 61.1,4 REMOVE DEBRIS FROM CHANNEL AND REDISTRIBUTE ROCK AND GRAVEL IN

CHANNEL TO BETTER FACILITATE FLOW.

1 LS

222.7 INSTALL REFLECTIVE OBJECT MARKERS AT APPROACHES. 4 EA

PRELIM. MAINTENANCE TOTAL :

ITEM

NO.

REHABILITATION/RECONSTRUCTION

(TYPICALLY NEEDED WITHIN 5 YEARS)

QTY. UNIT

UNIT

COST ESTIMATES

PRELIM. COST

REHAB. RECONSTR.

PRELIM. REHABILITATION/RECONSTRUCTION TOTAL :

COST ESTIMATE SUMMARY

PRELIM. MAINTENANCE TOTAL:

PRELIM. REHABILITATION TOTAL:

PRELIM. RECONSTRUCTION TOTAL: ..

TOTAL ITEMIZED COSTS:

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. 5460-091P

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.

N

N N G N N N N G G

N G

G G N G G N

N

N

N

N

58.3, 222.4 ROADWAY OVER STRUCTURE HAS BEEN REPAVED SINCE

PREVIOUS INSPECTION.

58.6 MODERATE MOSS AND VINE GROWTH ON STONE PARAPETS.

MINOR CRACKING OF MORTAR JOINTS.

59.8 HEAVY EFFLORESCENCE FROM STONE FASCIA RING STONE

MORTAR JOINTS.

60.1 MODERATE EFFLORESCENCE ON SOUTH ABUTMENT BREASTWALL,

WEST SIDE AND NORTH ABUTMENT, EAST SIDE, FROM RING

STONES. STEP CRACKING ALONG MORTAR JOINTS WITH

EFFLORESCENCE ON EAST SIDE OF SOUTH ABUTMENT; AND AT

EAST SIDE OF NORTH ABUTMENT. MINOR DETERIORATION OF

MORTAR JOINTS WITH EFFLORESCENCE.

60.6 MINOR MOSS AND VINE GROWTH. MINOR DETERIORATION OF

MORTAR JOINTS WITH EFFLORESCENCE ON WINGWALLS. TREES

GROWING AGAINST SOUTHWEST WINGWALL AND OVER TOP OF

PARAPET.

60.9 MINOR EROSION ALONG WINGWALLS. MINOR SCOUR AT

DOWNSTREAM SIDE OF NORTH ABUTMENT AND UPSTREAM SIDE

OF SOUTH ABUTMENT. SEE ALSO 61.1,4,6.

BREASTWALLS OR COLUMNS1. G

PILE BENTS2. N

CAPS AND/OR BEARING SEATS3. N

BACKWALLS AND/OR BULKHEADS4. N

FOUNDATIONS5. N

WINGWALLS6. G

WEEP HOLES7. G

EXPANSION JOINTS8. N

EROSION AND/OR SCOUR9. F

SETTLEMENT OR DEFLECTION10. G

SLOPE PROTECTION11. N

OTHER 12. N

PIER(S)

WALLS AND/OR COLUMNS 13. N

PILE BENTS14. N

CAPS AND/OR BEARING SEATS15. N

FOUNDATIONS16. N

EROSION AND/OR SCOUR17. N

SETTLEMENT OR DEFLECTION18. N

OTHER 19. N

INSPECTION DATE: 5/20/13

STRUCTURE NO. 5460-091P FIELD INSPECTION REPORT

COUCHES CREEK BRIDGE

ITEM REFERENCE AND REMARKS

AVERAGE CLEAR OPENING 8.

7. NORMAL VELOCITY

ADEQUACY OF OPENING 6.

5. OTHER

4. WATERWAY OBSTRUCTIONS

CHANNEL PROTECTION3.

EROSION AND/OR SCOUR2.

ALIGNMENT1.

61. CHANNEL 6

F F N F N

HIGH

SUFF

7 FT.

9. STREAM BED COMPOSITION :

SILT, SAND, ROCK

222. APPROACHES 7

OTHER 9.

ALIGNMENT 8.

SIGNS7.

SETTLEMENT 6.

EROSION5.

SURFACING4.

APPROACH GUARDRAIL 3.

2. RELIEF JOINTS

APPROACH SLABS1. N

N N G G G N F N

223. RETAINING WALL N

OTHER 6.

SETTLEMENT OR DEFLECTION5.

EROSION AND/OR SCOUR4.

FOUNDATION3.

WEEP HOLES2.

1. WALL

36. TRAFFIC AND SAFETY FEATURES

APPROACH GUARDRAIL ENDSD.

APPROACH GUARDRAILSC.

TRANSITIONSB.

BRIDGE RAILINGSA. 0

N N N

61.1 STREAM FLOWS AGAINST UPSTREAM SIDE OF SOUTH ABUTMENT

BREASTWALL AND DOWNSTREAM SIDE OF NORTH ABUTMENT

BREASTWALL, CAUSING MINOR SCOUR.

DEBRIS IN UPSTREAM CHANNEL DIRECTS FLOW AGAINST

NORTHWEST WINGWALL DURING PERIODS OF HIGH FLOW.

61.2 MINOR SLOUGHING OF NORTH CHANNEL BANK, DOWNSTREAM OF

STRUCTURE. SEE 61.1.

61.4 DEBRIS IN UPSTREAM CHANNEL IS REDIRECTING HIGH FLOW

ALONG NORTHWEST WINGWALL.

61.6 ROCK/GRAVEL BAR ALONG DOWNSTREAM PORTION OF SOUTH

ABUTMENT.

222.7 NO OBJECT MARKERS PRESENT.

222.8 CURVE AT BOTH APPROACHES.

36.A RAIL HEIGHT OF 2'-0" DOES NOT MEET MINIMUM AASHTO

STANDARDS OF 2'-3" FOR TRAFFIC RAIL.

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. 5460-091P

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 23 21 39 35

TYPE 3S2 36 33 61 55

TYPE 3-3 45 41 75 68

DESIGN LOADING: UNKNOWN (H15 ASSUMED - SEE REMARKS)

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: DESIGN LOADING IS UNKNOWN; ASSUMPTION IS BASED ON STRUCTURE TYPE, LOCATION, AGE, AND

CONDITION.

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 5460-091P

STRUCTURE IDENTIFICATION

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

(202) STRUCTURE NAME: .......... COUCHES CREEK BRIDGE (2) STATE HWY. AGENCY DIST:

(203) STRUCTURE KIND: ............ 1 - BRIDGE (3) COUNTY CODE: ........................ 173 - SWAIN

(204) STRUCTURE NUMBER: ..... 5460-091P (4) CITY/PLACE CODE:

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

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

(207) ROAD SECTION NO: .......... 091P (7) FACILITY CARRIED: .................. NEWFOUND GAP ROAD

(208) NPS ROAD CLASS: ............ 1 - PRINCIPAL PARK ROAD (8) STATE STRUCTURE NO: .......... 5460091P0000000

(209) WITHIN NPS BNDRY?: ....... YES (9) LOCATION: ................................ 13.0 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: ............................. 27.18 (KM PT 43.74)

(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: .. 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

07 - FRAME

16.0 FT (4.9 M)

16.0 FT (4.9 M)

0 - UNKNOWN

0 - UNKNOWN

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: ................. 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: 5/13 (91) FREQ. OF INSP: 48 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. 5460-091P

GEOMETRY, TRAFFIC, AND NAVIGATIONAL DATA

(16) LATITUDE: ............................. 35°31'17.58" (51) CURB TO CURB WIDTH: ........... 22.6 FT (6.9 M)

(17) LONGITUDE: ......................... 83°17'14.46" (52) DECK WIDTH: ............................ 34.0 FT (10.4 M)

(19) DETOUR LENGTH: ............... 90 MI (145 KM) (32) APPR. ROADWAY WIDTH: ........ 34.0 FT (10.4 M)

(28A) LANES ON STRUCT: .......... 02 (213) APPR. PAVEMENT WIDTH: ..... 22.0 FT (6.7 M)

(28B) LANES UNDER STRUCT: ... 00 LEFT SHOULDER: .................. 6.0 FT (1.8 M)

(42A) SERVICE ON: ..................... 1 - HIGHWAY RIGHT SHOULDER: ................ 6.0 FT (1.8 M)

(42B) SERVICE UNDER: .............. 5 - WATERWAY (33) BRIDGE MEDIAN: ....................... 0 - NO MEDIAN

(29) AVG. DAILY TRAFFIC: .......... 6300 (34) SKEW ANGLE: ............................ 0 °

(30) YEAR OF ADT: ...................... 2009 (35) DECK FLARE?: ........................... NO

(114) FUTURE ADT: ..................... 6930 (47) TOTAL HORIZ. CLEARANCE: .... 22.6 FT (6.9 M)

(115) YEAR OF FUTURE ADT: ..... 2029 (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: .............................. 9 - OTHER

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

LATERAL UNDERCLEARANCE:

(55) RIGHT: ....................... 99.9 FT (99.9 M) (215) BRIDGE RAIL HEIGHT: ............ 2.00 FT (0.61 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:

(60) SUBSTRUCTURE:

(61) CHANNEL:

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

(222) APPROACHES:

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

(36) TRAFFIC SAFETY FEAT: ... 0NNN

(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

U - Unknown foundation. Not yet

1 - MAINTENANCE

D - MINOR

ADDITIONAL INFORMATION

(230) STRUCTURE HISTORY:

(231) ADDITIONAL CONSIDERATIONS:

(330) ADDITIONAL CONFIG. INFO.:

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APPENDIX STRUCTURE NO. 5460-091P

PHOTOGRAPHS STRUCTURE NO. 5460-091P

PHOTO #1 - LOOKING NORTH TOWARD NEWFOUND GAP

FLOW

PHOTO #2 - WEST (UPSTREAM) SIDE

PHOTO #3 - GENERAL TOPSIDE VIEW LOOKING NORTH

PHOTO #4 - GENERAL UNDERSIDE VIEW LOOKING WEST

PHOTO #5 - ROADWAY HAS BEEN REPAVED SINCE PREVIOUS

INSPECTION

PHOTO #6 - GENERAL VIEW OF PARAPET WALL, EAST SIDE

PHOTO #7 - NORTHWEST PARAPET; NOTE LACK OF OBJECT MARKER

PHOTO #8 - EROSION AT SOUTHEAST PARAPET CORNER

PHOTO #9 - TYPICAL DETERIORATION OF MORTAR FOR PARAPET;

NOTE VEGETATION AND MOSS GROWTH, WEST PARAPET SHOWN

PHOTO #10 - GENERAL VIEW OF NORTH ABUTMENT

PHOTO #11 - NORTH ABUTMENT; NOTE WATER FLOWING FROM WEEP

HOLE

PHOTO #12 - GENERAL VIEW OF SOUTH ABUTMENT

PHOTO #13 - TYPICAL EFFLORESCENCE ALONG RING STONES AND

SOUTH ABUTMENT

PHOTO #14 - EFFLORESCENCE ON SOUTHEAST WINGWALL

PHOTO #15 - EFFLORESCENCE AND STEP CRACKING ON MASONRY AT

EAST SIDE OF SOUTH ABUTMENT

PHOTO #16 - TYPICAL EFFLORESCENCE ON RING STONES AT EAST

SIDE

PHOTO #17 - TYPICAL VIEW OF WINGWALLS; NOTE MOSS GROWTH

AND EFFLORESCENCE

PHOTO #18 - FLOW FROM NORTHWEST WINGWALL SLOPE

PHOTO #19 - UPSTREAM CHANNEL FROM UNDER BRIDGE

PHOTO #20 - DOWNSTREAM CHANNEL FROM UNDER BRIDGE

PHOTO #21 - LOOKING UPSTREAM THROUGH STRUCTURE; NOTE

ACCUMULATION OF SEDIMENT AND ROCK ALONG SOUTH ABUTMENT

PHOTO #22 - SLOUGHING OF DOWNSTREAM CHANNEL BANK