5140-086P2125.pdf

STRUCTURE SUMMARY STRUCTURE NO. 5140-086P

LITTLE GLADE CREEK BRIDGE #2 INSPECTION DATE: 6/27/19

BRIDGE IDENTIFICATION AND DESCRIPTION

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

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

# OF BEAMS, MAIN SPAN: .. 1 STRUCT. TOTAL LENGTH: .. 20.0 FT (6.1 M)

DECK TYPE: ......................... CONCRETE CAST-IN-PLACE MAX. SPAN LENGTH: .......... 20.0 FT (6.1 M)

WEARING SURFACE: .......... BITUMINOUS DECK WIDTH: ...................... 33.4 FT (10.2 M)

ABUT. FOUNDATIONS: ........ SPREAD FTG ON BEARING MAT'L CURB TO CURB WIDTH: ..... 30.0 FT (9.1 M)

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

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

PROJ./PLAN REF. NO: ......... 2B2 / NONE SKEW ANGLE: ..................... 0 °

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

STRUCTURE HISTORY: ...... 1980-JOINT REPAIR.

LOCATION

BLUE RIDGE PARKWAY MILE POINT: ..................... 230.42 (KM PT 370.83)

STATE: ................................. NORTH CAROLINA LOCATION: 0.9 MILES FROM U.S. ROUTE 21

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

FEATURE INTERSECTED: .. LITTLE GLADE CREEK

STRUCTURE EVALUATION SUMMARY

This concrete slab bridge is in fair condition overall. The main problem is the moderate deterioration of the underside at both sides of the deck slab. Other problems include scour along the south abutment and at the west corner of the north abutment, and mortar joint deterioration throughout the substructure.

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. 5140-086P

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.

C226 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.

58.1, 59.3 REPLACE DETERIORATED CONCRETE ON SIDES OF SLAB AS

NECESSARY.

60.9 INSTALL SCOUR COUNTERMEASURES ALONG SOUTH ABUTMENT,

EAST CORNER OF SOUTH ABUTMENT, AND WEST CORNER OF

NORTH ABUTMENT.

60.6 REPOINT MASONRY MORTAR JOINTS AS NECESSARY.

CONTRACT COSTS FOR MOBILIZATION, TRAFFIC CONTROL, AND

DESIGN CONSTRUCTION ENGINEERING (70% 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. 5140-086P

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 5 ITEM REFERENCE AND REMARKS

F1. DECK SLAB

N2. EXPANSION JOINTS

G3. WEARING SURFACE

G4. RIDEABILITY

N5. CURBS, SIDEWALKS, AND MEDIAN

G6. PARAPETS AND/OR RAILINGS

G7. DRAINS AND DRAINAGE

N8. UTILITIES

G9. DEFLECTION AND/OR VIBRATION

N10. OTHER

59. SUPERSTRUCTURE 5

N1. BEARING DEVICES

N2. GIRDERS OR BEAMS

F3. ARCH(ES) OR SLAB(S)

N4. FLOOR BEAMS AND STRINGERS

N5. TRUSSES

N6. DIAPHRAGMS AND BRACING

N7. PAINT

N8. FASCIA(E)

G9. DEFLECTION AND/OR VIBRATION

G10. ALIGNMENT

N11. OTHER

60. SUBSTRUCTURE 7

58.1, 59.3 20% OF DECK UNDERSIDE HAS MODERATE MAP CRACKING WITH

SCALING AND SOME SPALLING. MINOR TO MODERATE CRACKING,

EFFLORESCENCE, DELAMINATION, AND SPALLING ON BOTH SIDES

OF DECK SLAB. CONCRETE SOUNDS VERY POOR WHEN STRUCK

WITH HAMMER. MINOR CRACKING WITH EFFLORESCENCE ON

DECK UNDERSIDE AT CONSTRUCTION JOINTS AND ALONG DECK

EDGES.

58.3 MINOR LONGITUDINAL CRACKING OF WEARING SURFACE. MINOR

POT HOLES AT CENTERLINE OF ROADWAY NEAR NORTH

ABUTMENT.

58.6 MINOR DETERIORATION OF PARAPET MORTAR JOINTS WITH

EFFLORESCENCE.

58.7 MINOR VEGETATION GROWTH ALONG PARAPETS.

60.1 MINOR DETERIORATION OF ABUTMENT MORTAR JOINTS WITH

EFFLORESCENCE.

60.6 MINOR VEGETATION GROWTH ON NORTH AND SOUTHWEST

WINGWALLS. MODERATE DETERIORATION OF MORTAR JOINTS IN

NORTH WINGWALLS WITH MOSS GROWTH; MINOR ELSEWHERE.

60.9 MODERATE SCOUR AT NORTHWEST AND SOUTHEAST CORNERS OF

ABUTMENTS. MINOR SCOUR ALONG SOUTH ABUTMENT. MINOR

EROSION AT NORTHEAST WINGWALL END.

ABUTMENTS

1. BREASTWALLS OR COLUMNS G

2. PILE BENTS N

3. CAPS AND/OR BEARING SEATS G

4. BACKWALLS AND/OR BULKHEADS N

5. FOUNDATIONS N

6. WINGWALLS F

7. WEEP HOLES G

8. EXPANSION JOINTS N

9. EROSION AND/OR SCOUR F

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. 5140-086P

ITEM REFERENCE AND REMARKS

61. CHANNEL 6

1. ALIGNMENT F

2. EROSION AND/OR SCOUR G

3. CHANNEL PROTECTION N

4. WATERWAY OBSTRUCTIONS G

5. OTHER N

6. ADEQUACY OF OPENING SUFF

7. NORMAL VELOCITY LOW

8. AVERAGE CLEAR OPENING 7 FT.

9. STREAM BED COMPOSITION :

GRAVEL, SILT

222. APPROACHES 7

1. APPROACH SLABS

2. RELIEF JOINTS

3. APPROACH GUARDRAIL

4. SURFACING

5. EROSION

6. SETTLEMENT

7. SIGNS

8. ALIGNMENT

9. OTHER

N N N G G G N G 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

61.1 UPSTREAM FLOW DIRECTED TOWARD WEST CORNER OF NORTH

ABUTMENT. FLOW BENEATH BRIDGE DIRECTED TOWARD EAST

SIDE OF SOUTH ABUTMENT. SEE ALSO 60.9.

61.2 MINOR CHANNEL BANK EROSION.

61.2 SEE BRIDGE FILE FOR SCOUR EVALUATION.

222.4 MINOR LONGITUDINAL CRACKING OF PAVEMENT. MINOR

TRANSVERSE CRACKING OF PAVEMENT AT BOTH APPROACHES.

36.A PARAPET HEIGHT OF 1'-9" DOES NOT MEET MINIMUM SAFETY

HEIGHT GUIDELINES OF 2'-3".

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. 5140-086P

TRUCK TYPE

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

TONS METRIC TONS TONS METRIC TONS

H 16 15 27 24

HS 29 26 49 44

TYPE 3 23 21 39 35

TYPE 3S2 37 34 62 56

TYPE 3-3 46 42 79 72

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: 10/14

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. 5140-086P

STRUCTURE IDENTIFICATION

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

(202) STRUCTURE NAME: .......... LITTLE GLADE CREEK BRIDGE #2 (2) STATE HWY. AGENCY DIST:

(203) STRUCTURE KIND: ............1 - BRIDGE (3) COUNTY CODE: ........................ 005 - ALLEGHANY

(204) STRUCTURE NUMBER: ..... 5140-086P (4) CITY/PLACE CODE:

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

(206) ROUTE CODE NUMBER: ... 1 (6) FEATURES INTERSECTED:....... LITTLE GLADE CREEK

(207) ROAD SECTION NO: ..........086P (7) FACILITY CARRIED: .................. BLUE RIDGE PARKWAY

(208) NPS ROAD CLASS: ............ 1 - PRINCIPAL PARK ROAD (8) STATE STRUCTURE NO: .......... 5140086P0000000

(209) WITHIN NPS BNDRY?: .......YES (9) LOCATION: ................................ 0.9 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): ................2B2 (11) MILE POINT: .............................230.42 (KM PT 370.83)

(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

01 - SLAB

20.0 FT (6.1 M)

20.0 FT (6.1 M)

2 - SPREAD FTG ON BEARING MAT'L

2 - SPREAD FTG ON BEARING MAT'L

6 - N/A

6 - N/A

1 - CONCRETE CAST-IN-PLACE

(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: ...... 29.0 TONS (26.3 METRIC TONS) (70) BRIDGE POSTING: .............. 5 - NO POSTING REQUIRED

(64) OPERATING RATING: ...... 49.0 TONS (44.5 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: Y - 1 - DECK SURVEY (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. 5140-086P

GEOMETRY, TRAFFIC, AND NAVIGATIONAL DATA

(16) LATITUDE: ............................. 36°26'20.10"

(17) LONGITUDE: ......................... 81°02'03.30"

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

30.0 FT (9.1 M)

33.4 FT (10.2 M)

28.0 FT (8.5 M)

20.0 FT (6.1 M)

4.0 FT (1.2 M)

4.0 FT (1.2 M)

0 - NO MEDIAN

0 °

NO

30.0 FT (9.1 M)

0.0 FT (0.0 M)

0.0 FT (0.0 M)

3 - PARAPET ONLY

8 - TIMBER/OTHER

1 - CONTINUOUS RAIL

1.75 FT (0.53 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: ... 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

4 - Stable; action required to pro

2 - REHAB/RECONSTRUCTION

C - MODERATE

ADDITIONAL INFORMATION

(230) STRUCTURE HISTORY:

1980-JOINT REPAIR.

(231) ADDITIONAL CONSIDERATIONS:

(330) ADDITIONAL CONFIG. INFO.:

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PHOTOGRAPHS STRUCTURE NO. 5140-086P

PHOTO #1 - LOOKING NORTH TOWARD CUMBERLAND GAP

FLOW

PHOTO #2 - EAST (DOWNSTREAM) SIDE

PHOTO #3 - GENERAL TOPSIDE VIEW LOOKING SOUTH

PHOTO #4 - 3.5' LONG POTHOLE IN CENTERLINE AT MIDSPAN

PHOTO #5 - TRANSVERSE CRACKING OVER

SOUTH APPROACH

PHOTO #6 - 2' X 2' SINKHOLE AT NORTHWEST

SHOULDER

PHOTO #7 - GENERAL VIEW OF SOUTHEAST

WINGWALL; NOTE MOSS GROWTH FROM

MASONRY MORTAR JOINTS

PHOTO #8 - SOUTH ABUTMENT

PHOTO #9 - GENERAL UNDERSIDE VIEW

LOOKING NORTH

PHOTO #10 - LONGITUDINAL CRACK WITH

EFFLORESCENCE ALONG CENTERLINE OF

SLAB UNDERSIDE

PHOTO #11 - SCALING, SPALLING, AND

LONGITUDINAL CRACKING OF SLAB

UNDERSIDE UNDER NORTHBOUND LANE

NEAR MIDSPAN

PHOTO #12 - SCALING OF WEST END OF SLAB

UNDERSIDE

PHOTO #13 - LONGITUDINAL CRACKING WITH

EFFLORESCENCE ALONG EAST EDGE OF

SLAB UNDERSIDE

PHOTO #14 - CRACKING WITH

EFFLORESCENCE AND DELAMINATION ALONG

EAST EDGE OF SLAB

PHOTO #15 - EAST EDGE OF SLAB OVER NORTH ABUTMENT; NOTE

LONGITUDINAL CRACKING WITH EFFLORESCENCE, SPALLING, AND

DELAMINATION

PHOTO #16 - CRACKING WITH EFFLORESCENCE AND DELAMINATION

ON EAST SIDE OF SLAB NEAR SOUTH ABUTMENT

PHOTO #17 - GENERAL VIEW OF NORTH

ABUTMENT

PHOTO #18 - EFFLORESCENCE FROM MORTAR

JOINTS AND DETERIORATION OF JOINTS AT

EAST SIDE OF NORTH ABUTMENT

PHOTO #19 - SCOUR HOLE AT WEST SIDE OF

NORTH ABUTMENT; NOTE NO UNDERMINING

PHOTO #20 - GENERAL VIEW OF NORTHWEST

WINGWALL; NOTE ALSO SCOUR AT ABUTMENT

CORNER

PHOTO #21 - UPSTREAM CHANNEL

PHOTO #22 - DOWNSTREAM CHANNEL