Bridge_Inspection_Rpt_STR_5460-106P.pdf

STRUCTURE SUMMARY STRUCTURE NO. 5460-106P

TOM BRANCH ROAD BRIDGE INSPECTION DATE: 5/23/17

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: .. 3 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: ......... 109(1) / SKEW ANGLE:

NPS ROAD CLASS: .............. 3 - SPECIAL PURPOSE FRACTURE CRITICAL:

STRUCTURE HISTORY: ...... 1999-SUPERSTRUCTURE REPLACED, ABUTMENTS REHABILITATED.

LOCATION

44.7 FT (13.6 M)

43.0 FT (13.1 M)

12.3 FT (3.7 M)

10.3 FT (3.1 M)

0 °

NO

GREAT SMOKY MOUNTAINS NATIONAL PARK MILE POINT: ..................... 1.20 (KM PT 1.93)

STATE: ................................. NORTH CAROLINA LOCATION: AT INTERSECTION WITH NPS ROUTE

DEP-14.FACILITY CARRIED: ............ TOM BRANCH ROAD

FEATURE INTERSECTED: .. DEEP CREEK

STRUCTURE EVALUATION SUMMARY

This steel multi-beam bridge is in good condition overall, but has some problems that require attention. These include exposed footings at the abutments; misaligned capstones at the southeast and southwest wingwalls; a missing bolt in the north railing; a detached cover plate on the bottom of the northeast corner rail post; and lack of reflective object markers at bridge corners.

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. 5460-106P

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.

60.6 RESET CAPSTONE AT SOUTHWEST AND SOUTHEAST WINGWALLS. 1 CY

222.7 INSTALL TYPE 3 REFLECTIVE OBJECT MARKERS AT BRIDGE ENDS. 4 EA

58.6 REPLACE MISSING BOLT IN NORTH RAILING. RESET COVER PLATE ON THE

BOTTOM OF THE NORTHEAST CORNER RAIL POST

2 EA

PRELIM. MAINTENANCE TOTAL :

ITEM

NO.

REHABILITATION/RECONSTRUCTION

(TYPICALLY NEEDED WITHIN 5 YEARS)

QTY. UNIT

UNIT

COST ESTIMATES

PRELIM. COST

REHAB. RECONSTR.

60.9 PLACE SCOUR COUNTERMEASURES ALONG ABUTMENTS AND

WINGWALLS TO PROTECT EXPOSED FOOTING.

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. 5460-106P

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

N NOT APPLICABLE 3 SERIOUS CONDITION - loss of section, deterioration, spalling, or scour have seriously affected primary structural components. Local failures are possible.

9 EXCELLENT CONDITION Fatigue cracks in steel or shear cracks in concrete may be present.

8 VERY GOOD CONDITION - no problems noted. 2 CRITICAL CONDITION - advanced deterioration of primary structural elements. Fatigue cracks in steel or shear cracks in concrete may be present

7 GOOD CONDITION - some minor problems. or scour may have removed substructure support. Unless closely monitored it may be necessary to close the structure until corrective action can be taken.

6 SATISFACTORY CONDITION - structural elements show some minor deterioration. 1 “IMMINENT” FAILURE CONDITION - major deterioration or sec ion loss present in critical structural components or obvious vertical or horizontal

5 FAIR CONDITION - all primary structural elements are sound but may have movement affecting structure stability. Structure is closed to traffic but minor section loss, cracking, spalling, or scour. corrective action may return structure to light service.

4 POOR CONDITION - advanced section loss, deterioration, spalling, or scour. 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)

58. DECK 7 ITEM REFERENCE AND REMARKS

G1. DECK SLAB

N2. EXPANSION JOINTS

N3. WEARING SURFACE

G4. RIDEABILITY

G5. CURBS, SIDEWALKS, AND MEDIAN

G6. PARAPETS AND/OR RAILINGS

G7. DRAINS AND DRAINAGE

N8. UTILITIES

G9. DEFLECTION AND/OR VIBRATION

N10. OTHER

59. SUPERSTRUCTURE 7

G

2. GIRDERS OR BEAMS

1. BEARING DEVICES

G

N3. ARCH(ES) OR SLAB(S)

N4. FLOOR BEAMS AND STRINGERS

N5. TRUSSES

G6. DIAPHRAGMS AND BRACING

G7. PAINT

N8. FASCIA(E)

G9. DEFLECTION AND/OR VIBRATION

G10. ALIGNMENT

N11. OTHER

60. SUBSTRUCTURE 7

58.1 2" X 6" NOMINAL NAIL-LAMINATED TIMBER DECK. MINOR TO

MODERATE ABRASION OF DECK, MOSTLY ALONG WHEEL PATH.

58.5,6 MISSING BOLT IN NORTH RAILING NEAR MIDSPAN. MINOR

COLLISION DAMAGE TO CURBS AND RAILINGS THROUGHOUT.

CONNECTION PLATE DETACHED FROM BOTTOM OF RAIL POST AT

NORTHEAST. MINOR CHECKING OF RAILINGS.

58.7 MINOR GRAVEL MIGRATION AT EAST END. MINOR DEBRIS

ACCUMULATION BETWEEN LAMINATED DECK TIMBERS.

59.1 MINOR RUSTING OF BEARINGS AND CONNECTION HARDWARE.

59.2,7 MINOR SPOT RUST ON BEAMS DUE TO PAINT FAILURE.

60.1 MINOR EFFLORESCENCE ON ABUTMENT BREASTWALLS.

60.3 MINOR LEAKAGE AND PONDING OF WATER ON BEARING SEATS.

60.5,9 UP TO 2.6' OF SCOUR AT EAST ABUTMENT FOOTING, AND UP TO 1.9'

AT WEST ABUTMENT FOOTING; NO UNDERMINING NOTED.

FOOTINGS FOR ABUTMENTS AND WINGWALLS ARE COMPLETELY

EXPOSED. SEE ALSO 61.6.

MINOR EROSION ALONG WINGWALLS.

60.6 DISPLACEMENT OF MASONRY CAPSTONE ON SOUTHWEST AND

SOUTHEAST WINGWALLS, POSSIBLY CAUSED BY COLLISION;

MODERATE TO SEVERE MORTAR DETERIORATION.

ABUTMENTS

BREASTWALLS OR COLUMNS 1. G

PILE BENTS 2. N

CAPS AND/OR BEARING SEATS 3. G

BACKWALLS AND/OR BULKHEADS 4. N

FOUNDATIONS 5. G

WINGWALLS 6. F

WEEP HOLES 7. N

EXPANSION JOINTS 8. N

EROSION AND/OR SCOUR 9. F

SETTLEMENT OR DEFLECTION 10. G

SLOPE PROTECTION 11. N

OTHER 12. N

PIER(S)

WALLS AND/OR COLUMNS 13. N

PILE BENTS 14. N

CAPS AND/OR BEARING SEATS 15. N

FOUNDATIONS 16. N

EROSION AND/OR SCOUR 17. N

SETTLEMENT OR DEFLECTION 18. N

OTHER 19. N

FIELD INSPECTION REPORT STRUCTURE NO. 5460-106P

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 G G N

HIGH

SUFF

10 FT.

ROCK

222. APPROACHES 6

OTHER 9.

ALIGNMENT 8.

SIGNS 7.

SETTLEMENT 6.

EROSION 5.

SURFACING 4.

APPROACH GUARDRAIL 3.

RELIEF JOINTS 2.

1. APPROACH SLABS N

N N G G F G F N

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 GUARDRAIL ENDS D.

APPROACH GUARDRAILS C.

TRANSITIONS B.

BRIDGE RAILINGSA. 1

N N N

61.3 LARGE RIPRAP ON BOTH CHANNEL BANKS DOWNSTREAM OF

STRUCTURE.

61.6 STRUCTURE CONSTRICTS CHANNEL MODERATELY, CAUSING

SCOUR AT ABUTMENTS.

222.4 STABILIZED SOIL SURFACING AT EAST APPROACH; PAVED SURFACE

AT WEST APPROACH.

MINOR POTHOLES IN NORTH AND SOUTH WHEEL PATHS OF EAST

APPROACH.

222.6 MINOR SETTLEMENT OF APPROACHES.

222.7 "STOP" SIGN AT WEST APPROACH FACING STRUCTURE.

222.8 CURVE AT EAST APPROACH. T-INTERSECTION AT WEST

APPROACH.

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. 5460-106P

TRUCK TYPE

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

TONS METRIC TONS TONS METRIC TONS

H 40 36 67 61

HS 54 49 90 82

TYPE 3 48 44 81 73

TYPE 3S2 76 69 127 115

TYPE 3-3 94 85 157 142

DESIGN LOADING: H20 (M18)

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: 6/15

LOAD RATING CONTROLLED BY: MOMENT CAPACITY OF INTERIOR BEAMS

REMARKS:

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 5460-106P

STRUCTURE IDENTIFICATION

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

(202) STRUCTURE NAME: .......... TOM BRANCH ROAD BRIDGE (2) STATE HWY. AGENCY DIST:

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

(204) STRUCTURE NUMBER: ..... 5460-106P (4) CITY/PLACE CODE:

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

(206) ROUTE CODE NUMBER: ... 109 (6) FEATURES INTERSECTED:....... DEEP CREEK

(207) ROAD SECTION NO: .......... 106P (7) FACILITY CARRIED: .................. TOM BRANCH ROAD

(208) NPS ROAD CLASS: ............ 3 - SPECIAL PURPOSE (8) STATE STRUCTURE NO: .......... 5460106P0000000

(209) WITHIN NPS BNDRY?: ....... YES (9) LOCATION: ................................ AT INTERSECTION WITH NPS

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

(211) PROJECT NO(S): ................ 109(1) (11) MILE POINT: ............................. 1.20 (KM PT 1.93)

(212) DRAWING NUMBERS: ....... (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

43.0 FT (13.1 M)

44.7 FT (13.6 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: ................. 4 - H20 (M18) (41) LOAD RESTRICTION: ......... A - OPEN, NO RESTRICTION

(66) INVENTORY RATING: ...... 54.0 TONS (49.0 METRIC TONS) (70) BRIDGE POSTING: .............. 5 - NO POSTING REQUIRED

(64) OPERATING RATING: ...... 90.0 TONS (81.6 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. :

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 5460-106P

GEOMETRY, TRAFFIC, AND NAVIGATIONAL DATA

(16) LATITUDE: ............................. 35°27'51.00" (51) CURB TO CURB WIDTH: ........... 10.3 FT (3.1 M)

(17) LONGITUDE: ......................... 83°26'02.30" (52) DECK WIDTH: ............................ 12.3 FT (3.7 M)

(19) DETOUR LENGTH: ............... 10 MI (16 KM) (32) APPR. ROADWAY WIDTH: ........ 14.5 FT (4.4 M)

(28A) LANES ON STRUCT: .......... 01 (213) APPR. PAVEMENT WIDTH: ..... 10.5 FT (3.2 M)

(28B) LANES UNDER STRUCT: ... 00 LEFT SHOULDER: .................. 2.0 FT (0.6 M)

(42A) SERVICE ON: ..................... 1 - HIGHWAY RIGHT SHOULDER: ................ 2.0 FT (0.6 M)

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

(29) AVG. DAILY TRAFFIC: .......... 61 (34) SKEW ANGLE: ............................ 0 °

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

(114) FUTURE ADT: ..................... 102 (47) TOTAL HORIZ. CLEARANCE: .... 10.3 FT (3.1 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: .............................. 7 - TIMBER

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

LATERAL UNDERCLEARANCE:

(55) RIGHT: ....................... 0.0 FT (0.0 M) (215) BRIDGE RAIL HEIGHT: ............ 3.67 FT (1.12 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:

(59) SUPERSTRUCTURE:

(60) SUBSTRUCTURE:

(61) CHANNEL:

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

(222) APPROACHES:

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

(36) TRAFFIC SAFETY FEAT: ... 1NNN

(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:

1999-SUPERSTRUCTURE REPLACED, ABUTMENTS REHABILITATED.

(231) ADDITIONAL CONSIDERATIONS:

(330) ADDITIONAL CONFIG. INFO.:

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APPENDIX STRUCTURE NO. 5460-106P

PHOTOGRAPHS STRUCTURE NO. 5460-106P

FLOW

PHOTO #1 - LOOKING WEST TOWARD NPS ROUTE DEP-149; NOTE

ALSO MISSING REFLECTIVE OBJECT MARKER

PHOTO #2 - SOUTH (DOWNSTREAM) SIDE

PHOTO #3 - GENERAL TOPSIDE VIEW LOOKING EAST

PHOTO #4 - GENERAL UNDERSIDE VIEW LOOKING EAST

PHOTO #5 - POTHOLES IN WHEEL PATHS AT EAST APPROACH

PHOTO #6 - TYPICAL CHECKING OF TIMBER RAILING AND CURB,

NORTH RAILING SHOWN

PHOTO #7 - TYPICAL COLLISION DAMAGE TO TIMBER RAILINGS AND

CURBS, NORTH SIDE MIDSPAN SHOWN

PHOTO #8 - COLLISION DAMAGE TO EAST END OF SOUTH RAILING AND

CURB; NOTE ALSO DISPLACED MASONRY CAPSTONE AT SOUTHEAST

WINGWALL

PHOTO #9 - MISSING BOLT IN NORTH SIDE RAIL AT MIDSPAN (PHOTO

FROM 5/20/15 INSPECTION)

PHOTO #10 - DISLODGED METAL PLATE ON BOTTOM OF RAIL POST AT

NORTHEAST CORNER (PHOTO FROM 5/20/15 INSPECTION)

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

FOOTING

PHOTO #12 - TYPICAL EXPOSED FOOTING; WEST ABUTMENT SHOWN

PHOTO #13 - TYPICAL CONDITION OF BEARINGS, WEST ABUTMENT

SHOWN; NOTE RUSTING OF BEARING CONNECTION HARDWARE AND

STRUCTURAL STEEL

PHOTO #14 - VIEW OF CHANNEL LOOKING UPSTREAM FROM BRIDGE

PHOTO #15 - VIEW OF CHANNEL LOOKING DOWNSTREAM FROM

BRIDGE