5140-093P4250.pdf

STRUCTURE SUMMARY STRUCTURE NO. 5140-093P

BAMBOO ROAD BRIDGE INSPECTION DATE: 6/26/19

BRIDGE IDENTIFICATION AND DESCRIPTION

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

MAIN SPAN TYPE: ............... FRAME NO. OF APPR. SPANS:

# OF BEAMS, MAIN SPAN: .. 1 STRUCT. TOTAL LENGTH: .. 25.8 FT (7.9 M)

DECK TYPE: ......................... NOT APPLICABLE MAX. SPAN LENGTH: .......... 25.8 FT (7.9 M)

WEARING SURFACE: .......... BITUMINOUS DECK WIDTH: ...................... 34.1 FT (10.4 M)

ABUT. FOUNDATIONS: ........ SPREAD FOOTING ON PILES CURB TO CURB WIDTH: ..... 30.1 FT (9.2 M)

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

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

PROJ./PLAN REF. NO: ......... 2F5 / 2037B SKEW ANGLE: ..................... 8 °

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

STRUCTURE HISTORY: ...... 1983-JOINT REPAIR. 2017-ASPHALT ROADWAY RESURFACED

LOCATION

BLUE RIDGE PARKWAY MILE POINT: ..................... 285.48 (KM PT 459.44)

STATE: ................................. NORTH CAROLINA LOCATION: 9.2 MILES FROM U.S. ROUTE 421

FACILITY CARRIED: ............ BLUE RIDGE PARKWAY

FEATURE INTERSECTED: .. BAMBOO ROAD

STRUCTURE EVALUATION SUMMARY

This concrete frame bridge is in fair condition overall. Problems include minor to moderate deterioration of the mortar joints throughout the bridge, a loose capstone at the northwest parapet end, and minor spalling with exposed rebar due to insufficient cover on the deck underside. Finally, the object markers along the underpass roadway at the bridge are positioned outside of the obstruction. Also, the vertical clearance signs do not reflect the actual clearance of 12'-6" and are positioned too close to the structure.

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

INSPECTION TEAM: R. SILVESTRY, E. JOHNSON

CONDITION ASSESSMENT:

REINALDO SILVESTRY, P.E., FIELD TEAM LEADER 703-404-6251

REPORT REVIEW:

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

REPORT APPROVAL: DATE: 12/10/19

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

RECOMMENDATIONS AND ESTIMATED COSTS STRUCTURE NO. 5140-093P

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.

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.

58.6 RESET LOOSE CAPSTONE AT NORTHWEST PARAPET END.

58.6, 60.6, 222.3

REPOINT MASONRY MORTAR JOINTS AS NECESSARY.

222.7 REPOSITION OF REPLACE REFLECTIVE OBJECT MARKERS AT

CORNERS OF UNDERPASS APPROACH. VERTICAL CLEARANCE

SIGNS SHOULD BE REPLACED TO REFLECT 12'-6" CLEARANCE AND

59.3 CLEAN AND SEAL EXPOSED REBAR ON SLAB UNDERSIDE WITH

APPROVED PROTECTIVE COATING.

CONTRACT COSTS FOR MOBILIZATION, TRAFFIC CONTROL,

DESIGN, AND CONSTRUCTION ENGINEERING (APPROXIMATELY

70% OF TOTAL REHAB COST) PLUS PARK LOCATION FACTOR.

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. 5140-093P

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 F N N N N G G

N G

G G N G G N

N

N

N

N

58.3 WEARING SURFACE IN GOOD CONDITION.

58.6, 222.3 MINOR TO MODERATE CRACKING OF MORTAR JOINTS WITH

EFFLORESCENCE AND MINOR MOSS GROWTH. LOOSE CAPSTONE

AT NORTHWEST PARAPET END. SMALL TREE GROWING FROM

WEST PARAPET.

59.3 MINOR CRACKING, SPALLING, AND EFFLORESCENCE ON SLAB

UNDERSIDE. EXPOSED REBAR DUE TO INSUFFICIENT CONCRETE

COVER. MINOR SEEPAGE FROM ARCH UNDERSIDE NEAR SOUTH

ABUTMENT, WEST SIDE.

59.8 MODERATE EFFLORESCENCE AND WATER LEAKAGE FROM STONE

MASONRY FASCIA RING STONES.

60.1 MINOR CRACKING OF ABUTMENT MORTAR JOINTS. HEAVY SOIL

STAINING ON FACES OF BOTH BREASTWALLS.

60.6 MINOR CRACKING OF WINGWALL MORTAR JOINTS WITH

EFFLORESCENCE AND MOSS GROWTH. SEVERAL SMALL FALLEN

TREES ALONG WINGWALLS. 1. BREASTWALLS OR COLUMNS G

2. PILE BENTS N

3. CAPS AND/OR BEARING SEATS N

4. BACKWALLS AND/OR BULKHEADS N

5. FOUNDATIONS N

6. WINGWALLS G

7. WEEP HOLES G

8. EXPANSION JOINTS N

9. EROSION AND/OR SCOUR G

10. SETTLEMENT OR DEFLECTION G

11. SLOPE PROTECTION N

12. OTHER N

PIER(S)

13. WALLS AND/OR COLUMNS N

14. PILE BENTS N

15. CAPS AND/OR BEARING SEATS N

16. FOUNDATIONS N

17. EROSION AND/OR SCOUR N

18. SETTLEMENT OR DEFLECTION N

19. OTHER N

FIELD INSPECTION REPORT STRUCTURE NO. 5140-093P

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 N

222. APPROACHES 6

1. APPROACH SLABS

2. RELIEF JOINTS

3. APPROACH GUARDRAIL

4. SURFACING

5. EROSION

6. SETTLEMENT

7. SIGNS

8. ALIGNMENT

9. OTHER (UNDERPASS ROADWAY)

N N G G G G F G F

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

222.7 TYPE 3 REFLECTIVE OBJECT MARKERS AT UNDERPASS

APPROACHES ARE POSITIONED OUTSIDE OF HORIZONTAL

CLEARANCE LIMIT OF STRUCTURE.

12'-8" VERTICAL CLEARANCE SIGNS POSTED AT BOTH

APPROACHES, SHOULD BE 12'-6". VERTICAL CLEARANCE SIGN AT

EAST APPROACH IS TOO CLOSE TO STRUCTURE.

222.9 MODERATE DETERIORATION OF UNDERPASS ROADWAY WEARING

SURFACE.

36.D PARAPET ENDS DO NOT TERMINATE SAFELY.

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. 5140-093P

TRUCK TYPE

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

TONS METRIC TONS TONS METRIC TONS

H 52 47 87 79

HS 81 73 135 122

TYPE 3 66 60 111 101

TYPE 3S2 104 94 174 158

TYPE 3-3 130 118 217 197

DESIGN LOADING: H15 (M13.5)

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:

REMARKS: RATING IS BASED ON DESIGN LOAD OF STRUCTURE.

SEE BRIDGE FILE FOR LOAD RATING CALCULATIONS.

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 5140-093P

STRUCTURE IDENTIFICATION

(201) PARK: BLUE RIDGE PARKWAY (1) STATE: ....................................... 374 - NORTH CAROLINA (NC)

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

(203) STRUCTURE KIND: ............1 - BRIDGE (3) COUNTY CODE: ........................ 189 - WATAUGA

(204) STRUCTURE NUMBER: ..... 5140-093P (4) CITY/PLACE CODE:

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

(206) ROUTE CODE NUMBER: ... 1 (6) FEATURES INTERSECTED:....... BAMBOO ROAD

(207) ROAD SECTION NO: ..........093P (7) FACILITY CARRIED: .................. BLUE RIDGE PARKWAY

(208) NPS ROAD CLASS: ............ 1 - PRINCIPAL PARK ROAD (8) STATE STRUCTURE NO: .......... 5140093P0000000

(209) WITHIN NPS BNDRY?: .......YES (9) LOCATION: ................................ 9.2 MILES FROM U.S. ROUTE

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

(211) PROJECT NO(S): ................2F5 (11) MILE POINT: .............................285.48 (KM PT 459.44)

(212) DRAWING NUMBERS: ....... 2037B (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

07 - FRAME

25.8 FT (7.9 M)

25.8 FT (7.9 M)

3 - SPREAD FOOTING ON PILES

3 - SPREAD FOOTING ON PILES

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: ................. 2 - H15 (M13.5) (41) LOAD RESTRICTION: ......... A - OPEN, NO RESTRICTION

(66) INVENTORY RATING: ...... 81.0 TONS (73.5 METRIC TONS) (70) BRIDGE POSTING: .............. 5 - NO POSTING REQUIRED

(64) OPERATING RATING: ...... 99.9 TONS (99.9 METRIC TONS)

INSPECTION DATES

(90) INSPECTION DATE: 6/19 (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. 5140-093P

GEOMETRY, TRAFFIC, AND NAVIGATIONAL DATA

(16) LATITUDE: ............................. 36°11'30.96"

(17) LONGITUDE: ......................... 81°36'11.16"

(19) DETOUR LENGTH: ............... 25 MI (40 KM)

(28A) LANES ON STRUCT:

(28B) LANES UNDER STRUCT: ... 02

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

(42B) SERVICE UNDER: .............. 1 - HIGHWAY

(29) AVG. DAILY TRAFFIC:

(30) YEAR OF ADT:

(114) FUTURE ADT:

(115) YEAR OF FUTURE ADT:

(101) PARALLEL STRUCTURE: ... N - NONE

(38) NAVIGATION CONTROL?: ... N

(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: ....................... 2.5 FT (0.8 M)

(56) LEFT: ......................... 2.5 FT (0.8 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:

30.1 FT (9.2 M)

34.1 FT (10.4 M)

30.0 FT (9.1 M)

20.0 FT (6.1 M)

5.0 FT (1.5 M)

5.0 FT (1.5 M)

0 - NO MEDIAN

8 °

NO

30.1 FT (9.2 M)

0.0 FT (0.0 M)

0.0 FT (0.0 M)

3 - PARAPET ONLY

9 - OTHER

1 - CONTINUOUS RAIL

2.25 FT (0.69 M)

99.99 FT (99.99 M)

12.50 FT (3.81 M)

CONDITION AND APPRAISAL DATA, PROPOSED IMPROVEMENTS, AND COST

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

(59) SUPERSTRUCTURE:

(60) SUBSTRUCTURE:

(61) CHANNEL: .......................... N

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

(222) APPROACHES:

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

(36) TRAFFIC SAFETY FEAT: ... 1110

(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

N - Not over waterway.

2 - REHAB/RECONSTRUCTION

D - MINOR

ADDITIONAL INFORMATION

(230) STRUCTURE HISTORY:

1983-JOINT REPAIR. 2017-ASPHALT ROADWAY RESURFACED

(231) ADDITIONAL CONSIDERATIONS:

(330) ADDITIONAL CONFIG. INFO.:

https://81�36'11.16 https://36�11'30.96

PHOTOGRAPHS STRUCTURE NO. 5140-093P

PHOTO #1 - LOOKING NORTH TOWARD CUMBERLAND KNOB

PHOTO #2 - EAST SIDE

PHOTO #3 - GENERAL TOPSIDE VIEW LOOKING NORTH

PHOTO #4 - TYPICAL CONDITION OF PARAPET; NOTE MODERATE

DEBRIS ACCUMULATION ALONG PARAPET AND IN JOINTS

PHOTO #5 - SMALL TREE GROWING OUT OF EAST PARAPET, SIMILAR

TREE ON WEST PARAPET

PHOTO #6 - NORTHWEST PARAPET END; NOTE SHIFTED CAPSTONE

AND MOSS GROWTH

PHOTO #7 - NORTHWEST WINGWALL; NOTE

MOSS GROWTH AND EFFLORESCENCE FROM

MORTAR JOINTS

PHOTO #8 - NORTH ABUTMENT

PHOTO #9 - UNDERSIDE VIEW LOOKING

NORTH; NOTE CRACKING WITH

EFFLORESCENCE ON SLAB UNDERSIDE

PHOTO #10 - SPALLING WITH EXPOSED

REBAR AND LONGITUDINAL CRACK WITH

EFFLORESCENCE TOWARD SOUTHWEST

CORNER OF SLAB UNDERSIDE

PHOTO #11 - LONGITUDINAL CRACK WITH

EFFLORESCENCE AND EFFLORESCENCE

FROM FASCIA RINGSTONES ON EAST SIDE

PHOTO #12 - TYPICAL EFFLORESCENCE FROM

FASCIA RINGSTONES, WEST SIDE SHOWN

PHOTO #13 - SOUTH ABUTMENT

PHOTO #14 - SOUTHEAST WINGWALL; NOTE VEGETATION AND MOSS

GROWTH

PHOTO #15 - VERTICAL CLEARANCE SIGN AT WEST APPROACH

PHOTO #16 - VERTICAL CLEARANCE SIGN AT EAST APPROACH