Bridge_Inspection_Rpt_STR_5140-158P.pdf

TUNNEL INSPECTION REPORT

SHERILL COVE TUNNEL

BLUE RIDGE PARKWAY THROUGH SHERILL COVE MOUNTAIN

BLUE RIDGE PARKWAY

NP

STRUCTURE NO. 5140-158P

INSPECTION TYPE: ROUTINE

INSPECTION DATE: 6/15/15

Report prepared by: SP

MILE POINT: 466.24

Federal Highway Administration KILOMETER POINT: 750.32 Federal Lands Bridge Office Bridge Inspection and Management Program 21400 Ridgetop Circle Sterling, Virginia 20166 https://bridge.flhd.fhwa.dot.gov

STRUCTURE SUMMARY STRUCTURE NO. 5140-158P

SHERILL COVE TUNNEL INSPECTION DATE: 6/15/15

TUNNEL IDENTIFICATION AND DESCRIPTION

LINING MATERIAL: ............... CONCRETE MINIMUM VERTICAL CLR: .... 14.2 FT (4.3 M)

SPRINGLINE LENGTH: ........ 29.5 FT (9.0 M) STRUCT. TOTAL LENGTH: ... 590.0 FT (179.8 M)

CURB TO CURB WIDTH: ..... 29.5 FT (9.0 M) YEAR BUILT:

PROJ./PLAN REF. NO: ......... 2Z8,2Z5 / 00000 YEAR RECONSTRUCTED: ....N/A

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

STRUCTURE HISTORY: ...... 1958-LININGS EXTENDED, PORTALS CONSTRUCTED; INNER CONCRETE LINER OVER OLD

TIMBER LINING. 2008-REFLECTORS REPLACED.

LOCATION

BLUE RIDGE PARKWAY MILE POINT: ..................... 466.24 (KM PT 750.32)

STATE: .................................. NORTH CAROLINA LOCATION: 2.8 MILES TO U.S. ROUTE 441

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

FEATURE INTERSECTED: ... SHERILL COVE MOUNTAIN

STRUCTURE EVALUATION SUMMARY

This concrete lined tunnel is in good condition overall. The main problem is the exposed drain chase on the west lining approximately 340' from the north portal. At the time of this inspection, leakage at several drain chases was minor. Other problems include areas of exposed rebar throughout the lining, incorrect vertical clearance signs at the approaches, and minor gravel accumulation along the west curbline.

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

INSPECTION TEAM: C. CASTRO, R. SILVESTRY

CONDITION ASSESSMENT:

CARLOS CASTRO, P.E., FIELD TEAM LEADER 571-434-1546

REPORT REVIEW:

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

REPORT APPROVAL: DATE: 12/31/15

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

RECOMMENDATIONS AND ESTIMATED COSTS STRUCTURE NO. 5140-158P

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.

59.1 CLEAN AND SEAL AREAS OF EXPOSED REBAR IN LINING WITH APPROVED

PROTECTIVE COATING.

1 LS $3,000 $3,000

222.7 INSTALL CORRECT VERTICAL CLEARANCE SIGNS AT APPROACHES. 2 EA $250 $1,000

59.4 REMOVE GRAVEL ACCUMULATION FROM WEST CURBLINE. 1 LS $1,000 $1,000

PRELIM. MAINTENANCE TOTAL : $5,000

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:

$0 $0 $5,000

$5,000

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.)

$5,000

REMARKS: Cost estimates assume that recommended actions will be combined with similar work being performed on other structures.

FIELD INSPECTION REPORT STRUCTURE NO. 5140-158P

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 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 CODE EQUIVALENTS FOR SUB-ELEMENTS

G = GOOD (CODES 7 - 9) F = FAIR (CODES 5 - 6) P = POOR (CODES 0 - 4)

59. TUNNEL 6

1. LINING F

PORTALS 2. G

CURBS AND SIDEWALKS 3. N

DRAINS AND DRAINAGE 4. F

WEARING SURFACE5. G

RIDEABILITY 6. G

LIGHTING 7. N

OTHER 8. (REFLECTORS/STRIPING) G

9. ADEQUACY OF OPENING SUFF

222. APPROACHES 6

N1. APPROACH SLABS

N2. RELIEF JOINTS

N3. APPROACH GUARDRAIL

G4. SURFACING

G5. EROSION

G6. SETTLEMENT

F7. SIGNS

G8. ALIGNMENT

G9. OTHER (STRIPING)

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

NA. BRIDGE RAILINGS

NB. TRANSITIONS

NC. APPROACH GUARDRAILS

ND. APPROACH GUARDRAIL ENDS

ITEM REFERENCE AND REMARKS

59.1,4 SPALLING WITH EXPOSED REBAR ON CROWN OF LINING

APPROXIMATELY 55' FROM NORTH PORTAL; ON WEST LINING DUE

TO POP OUTS APPROXIMATELY 64' FROM NORTH PORTAL AND AT

120'; AND ON EAST LINING APPROXIMATELY 120', 420', AND 490'

FROM NORTH PORTAL.

MINOR TO MODERATE CRACKING WITH EFFLORESCENCE AND

STAINING ON SEVERAL LOCATIONS.

MODERATE CRACKING WITH EFFLORESCENCE AND SPALLING ON

EAST LINING APPROXIMATELY 340' FROM NORTH PORTAL HAS

EXPOSED DRAIN CHASE. SEVERAL OTHER DRAIN CHASES HAVE

MINOR LEAKAGE. MINOR GRAVEL ACCUMULATION ALONG WEST

CURBLINE.

59.2 MINOR DETERIORATION OF MASONRY MORTAR JOINTS WITH

EFFLORESCENCE AND VEGETATION GROWTH. MINOR CRACKING

AT MASONRY/CONCRETE JOINT ON BOTH PORTALS.

222.7 14'-3" CLEARANCE SIGN AT SOUTH APPROACH; 14'-10" AT NORTH

APPROACH; ACTUAL VERTICAL CLEARANCE IS 14'-2".

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 INVENTORY AND APPRAISAL STRUCTURE NO. 5140-158P

STRUCTURE IDENTIFICATION

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

(202) STRUCTURE NAME: .......... SHERILL COVE TUNNEL (2) STATE HWY. AGENCY DIST:

(203) STRUCTURE KIND: ............3 - TUNNEL (3) COUNTY CODE: ........................ 099 - JACKSON

(204) STRUCTURE NUMBER: ..... 5140-158P (4) CITY/PLACE CODE:

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

(206) ROUTE CODE NUMBER: ... 1 (6) FEATURES INTERSECTED:....... SHERILL COVE MOUNTAIN

(207) ROAD SECTION NO: .......... 158P (7) FACILITY CARRIED: .................. BLUE RIDGE PARKWAY

(208) NPS ROAD CLASS: ............ 1 - PRINCIPAL PARK ROAD (8) STATE STRUCTURE NO: .......... 5140158P0000000

(209) WITHIN NPS BNDRY?: ....... YES (9) LOCATION: ................................ 2.8 MILES TO U.S. ROUTE 4

(210) OPERATING UNIT: ............. BALSAM (10) INV. RTE. - MIN. VERT. CLR: .. 14.00 FT (4.27 M)

(211) PROJECT NO(S): ................ 2Z8,2Z5 (11) MILE POINT: ............................. 466.24 (KM PT 750.32)

(212) DRAWING NUMBERS: ....... 00000 (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

18 - TUNNEL

29.5 FT (9.0 M)

590.0 FT (179.8 M)

6 - N/A

6 - N/A

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?: ..................... YES

LOAD RATING AND POSTING

(31) DESIGN LOAD: ................. 0 - UNKNOWN (41) LOAD RESTRICTION: ......... R - POSTED (OTHER)

(66) INVENTORY RATING: ...... 0.0 TONS (0.0 METRIC TONS) (70) BRIDGE POSTING: .............. 5 - NO POSTING REQUIRED

(64) OPERATING RATING: ...... 0.0 TONS (0.0 METRIC TONS)

INSPECTION DATES

(90) INSPECTION DATE: 6/15 (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. 5140-158P

GEOMETRY, TRAFFIC, AND NAVIGATIONAL DATA

(51) CURB TO CURB WIDTH: ........... 29.5 FT (9.0 M) (16) LATITUDE: ............................. 35°30'44.60"

(17) LONGITUDE: ......................... 83°16'15.00"

(19) DETOUR LENGTH: ............... 20 MI (32 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?: ... 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: ....................... 3.9 FT (1.2 M)

(56) LEFT: ......................... 0.0 FT (0.0 M)

(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:

0.0 FT (0.0 M)

38.0 FT (11.6 M)

22.0 FT (6.7 M)

8.0 FT (2.4 M)

8.0 FT (2.4 M)

0 - NO MEDIAN

0 °

NO

29.5 FT (9.0 M)

0.0 FT (0.0 M)

0.0 FT (0.0 M)

0 - N/A

0 - N/A

0 - N/A

0.00 FT (0.00 M)

14.17 FT (4.32 M)

14.17 FT (4.32 M)

CONDITION AND APPRAISAL DATA, PROPOSED IMPROVEMENTS, AND COST

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

(59) SUPERSTRUCTURE: .........N

(60) SUBSTRUCTURE: ..............N

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

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

(222) APPROACHES:

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

(36) TRAFFIC SAFETY FEAT: ... NNNN

(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

N

N - Not over waterway.

1 - MAINTENANCE

D - MINOR

$5,000

$0

$0

ADDITIONAL INFORMATION

(230) STRUCTURE HISTORY:

1958-LININGS EXTENDED, PORTALS CONSTRUCTED; INNER CONCRETE LINER OVER OLD TIMBER LINING. 2008-REFLECTORS

REPLACED.

(231) ADDITIONAL CONSIDERATIONS:

(330) ADDITIONAL CONFIG. INFO.:

APPENDIX STRUCTURE NO. 5140-158P

PHOTOGRAPHS STRUCTURE NO. 5140-158P

PHOTO #1 - NORTH PORTAL

PHOTO #2 - SOUTH PORTAL

PHOTO #3 - GENERAL UNDERSIDE VIEW LOOKING SOUTH

PHOTO #4 - GENERAL VIEW OF ROADWAY LOOKING NORTH

PHOTO #5 - GENERAL ROADWAY VIEW

LOOKING SOUTH

PHOTO #6 - EFFLORESCENCE ALONG RING

STONES IN NORTH PORTAL

PHOTO #7 - ACTIVE WATER LEAKAGE

THROUGH DRAIN CHASE APPROXIMATELY 10'

FROM NORTH PORTAL

PHOTO #8 - CRACKING WITH

EFFLORESCENCE AND STAINING ON EAST

LINING APPROXIMATELY 28' FROM NORTH

PORTAL

PHOTO #9 - CRACKING WITH

EFFLORESCENCE AND RUST STAINING ON

EAST SIDE NEAR CROWN APPROXIMATELY 45'

FROM NORTH PORTAL

PHOTO #10 - CRACKING WITH

EFFLORESCENCE AND SPALLING WITH

EXPOSED REBAR AT CROWN APPROXIMATELY

55' FROM NORTH PORTAL

PHOTO #11 - LEAKAGE AND EFFLORESCENCE ON WEST LINING

APPROXIMATELY 64' FROM NORTH PORTAL; NOTE RUST STAINING ON

POPOUTS FROM EXPOSED REBAR

PHOTO #12 - CLOSE-UP OF PREVIOUS PHOTO

PHOTO #13 - CRACKING WITH

EFFLORESCENCE ON EAST LINING

APPROXIMATELY 64' FROM NORTH PORTAL

PHOTO #14 - CRACKING WITH

EFFLORESCENCE, STAINING, AND ACTIVE

WATER LEAKAGE ALONG DRAIN CHASE ON

WEST LINING APPROXIMATELY 88' FROM

NORTH PORTAL

PHOTO #15 - SPALLING AT DRAIN CHASE ON

GROUND 88' FROM NORTH PORTAL

PHOTO #16 - CRACKING WITH

EFFLORESCENCE ON WEST WALL

APPROXIMATELY 90' FROM NORTH PORTAL

PHOTO #17 - CRACKING WITH

EFFLORESCENCE AND RUST STAINING

EXTENDING DOWN FROM CROWN ON WEST

SIDE APPROXIMATELY 95' FROM NORTH

PORTAL

PHOTO #18 - EXPOSED REBAR, CRACKING,

WATER STAINING AND EFFLORESCENCE OF

EAST TUNNEL LINING APPROXIMATELY 120'

FROM NORTH PORTAL; SIMILAR CONDITIONS

ON WEST SIDE

PHOTO #19 - CRACKING WITH

EFFLORESCENCE ON WEST TUNNEL LINING

APPROXIMATELY 200' FROM NORTH PORTAL

PHOTO #20 - SPALLING WITH ACTIVE WATER

LEAKAGE AT EAST LINING APPROXIMATELY

218' FROM NORTH PORTAL

PHOTO #21 - CRACKING WITH

EFFLORESCENCE ON WEST WALL

APPROXIMATELY 220' FROM NORTH PORTAL;

NOTE SIMILAR CONDITION ON EAST WALL

PHOTO #22 - CRACKING WITH

EFFLORESCENCE ON EAST WALL

APPROXIMATELY 260' FROM NORTH PORTAL

PHOTO #23 - CRACKING ON WEST WALL

APPROXIMATELY 270' FROM NORTH PORTAL

PHOTO #24 - CRACKING WITH

EFFLORESCENCE AND SPALLING WITH

EXPOSED DRAIN CHASE ON EAST LINING

APPROXIMATELY 340' FROM NORTH PORTAL

PHOTO #25 - CRACKING WITH

EFFLORESCENCE ON EAST TUNNEL LINING

APPROXIMATELY 385' FROM NORTH PORTAL

PHOTO #26 - VERTICAL CRACKING WITH

EFFLORESCENCE ON EAST WALL

APPROXIMATELY 390' FROM NORTH PORTAL

PHOTO #27 - CRACKING AND MINOR SPALLING

WITH EXPOSED REBAR ON EAST WALL

APPROXIMATELY 490' FROM SOUTH PORTAL

PHOTO #28 - CRACKING AND STAINING ON

EAST WALL APPROXIMATELY 500' FROM

NORTH PORTAL; NOTE POPOUTS TYPICAL OF

WEST WALL

PHOTO #29 - SPALLING AND PATCHING ON

WEST WALL APPROXIMATELY 515' FROM

NORTH PORTAL

PHOTO #30 - VERTICAL CRACKING OF WEST

WALL APPROXIMATELY 530' FROM NORTH

PORTAL

PHOTO #31 - CRACKING WITH EFFLORESCENCE ON WEST WALL

APPROXIMATELY 550' FROM NORTH END

PHOTO #32 - EFFLORESCENCE ON EAST WALL OF SOUTH PORTAL;

NOTE DEBRIS ACCUMULATION ALONG WALL

PHOTO #33 - DEBRIS ACCUMULATION AND

MOSS GROWTH ALONG WEST CURB LANE