Bridge_Inspection_Rpt_STR_5140-150P.pdf

TUNNEL INSPECTION REPORT

BUCK SPRING TUNNEL

BLUE RIDGE PARKWAY THROUGH BUCK SPRING MOUNTAIN

BLUE RIDGE PARKWAY

NP

STRUCTURE NO. 5140-150P

INSPECTION TYPE: ROUTINE

INSPECTION DATE: 6/13/15

Report prepared by: SP

MILE POINT: 407.25

Federal Highway Administration KILOMETER POINT: 655.39 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. 5140-150P

BUCK SPRING TUNNEL INSPECTION DATE: 6/13/15

TUNNEL IDENTIFICATION AND DESCRIPTION

LINING MATERIAL: ............... CONCRETE MINIMUM VERTICAL CLR: .... 13.5 FT (4.1 M)

SPRINGLINE LENGTH: ........ 29.7 FT (9.1 M) STRUCT. TOTAL LENGTH: ... 468.0 FT (142.6 M)

CURB TO CURB WIDTH: ..... 29.7 FT (9.1 M) YEAR BUILT:

PROJ./PLAN REF. NO: ......... 2T5,2T2,2T10 / 00000 YEAR RECONSTRUCTED:

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

STRUCTURE HISTORY: ...... 1985-LINING REHABILITATION. 2010-PARTIAL LINING REPAIR AND REPAVED WITH

SHOULDER WORK.

LOCATION

BLUE RIDGE PARKWAY MILE POINT: ..................... 407.25 (KM PT 655.39)

STATE: .................................. NORTH CAROLINA LOCATION: 4.6 MILES TO U.S. ROUTE 276

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

FEATURE INTERSECTED: ... BUCK SPRING MOUNTAIN

STRUCTURE EVALUATION SUMMARY

This concrete lined tunnel is in fair to good condition overall. Several cracks were sealed; spalling with exposed rebar, and a hole in the lining were repaired; and some drainage chases were replaced before the 6/27/11 inspection, under project PRA-BLRI 2T13. However some problems remain. These problems include cracking and leakage from drain chases particularly at approximately 250', 398', and 408' from the north portal, and additional cracking with efflorescence along the lining.

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. 5140-150P

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.

C226 PRIORITY OF IMPROVEMENT

ITEM

NO.

MAINTENANCE RECOMMENDATIONS

(GENERALLY NOT FLHP ELIGIBLE)

QTY. UNIT COST

UNIT

ESTIMATE

COST

PRELIM.

222.7 POST CORRECT VERTICAL CLEARANCE SIGNS AT BOTH APPROACHES 2 EA $300 $1,000

PRELIM. MAINTENANCE TOTAL : $1,000

ITEM

NO.

REHABILITATION/RECONSTRUCTION

(TYPICALLY NEEDED WITHIN 5 YEARS) QTY. UNIT UNIT

COST ESTIMATES

PRELIM. COST

REHAB. RECONSTR.

59.4 REPAIR LEAKING DRAIN CHASES AS NECESSARY 1 LS $20,000 $20,000 $0

59.1 REPAIR SPALLING WITH EXPOSED REBAR ON CROWN AND LINING

OF TUNNEL.

1 LS $2,250 $4,000 $0

59 CONTRACT COSTS FOR MOBILIZATION, TRAFFIC CONTROL, AND

DESIGN/CONSTRUCTION ENGINEERING.

1 LS $16,000 $16,000 $0

PRELIM. REHABILITATION/RECONSTRUCTION TOTAL : $40,000 $0

COST ESTIMATE SUMMARY

PRELIM. MAINTENANCE TOTAL:

PRELIM. REHABILITATION TOTAL:

PRELIM. RECONSTRUCTION TOTAL: ...

TOTAL ITEMIZED COSTS:

$0 $40,000 $1,000

$41,000

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.)

$41,000

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

FIELD INSPECTION REPORT STRUCTURE NO. 5140-150P

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 5

F

2. PORTALS

1. LINING

G

N3. CURBS AND SIDEWALKS

F4. DRAINS AND DRAINAGE

G5. WEARING SURFACE

G6. RIDEABILITY

N7. LIGHTING

G8. OTHER (REFLECTORS)

9. ADEQUACY OF OPENING SUFF

222. APPROACHES 8

N1. APPROACH SLABS

N2. RELIEF JOINTS

N3. APPROACH GUARDRAIL

G4. SURFACING

G5. EROSION

G6. SETTLEMENT

G7. SIGNS

G8. ALIGNMENT

N9. OTHER

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 MINOR SPALLING WITH EXPOSED REBAR ON WEST LINING

APPROXIMATELY 100' AND 165' FROM NORTH PORTAL, AND ON

CROWN APPROXIMATELY 70' AND 300' FROM NORTH PORTAL.

NUMEROUS AREAS OF CRACKING WITH EFFLORESCENCE AND

SEVERE SPALLING WITH EXPOSED REBAR WERE REPAIRED

BEFORE 6/27/11 INSPECTION. MINOR ADDITIONAL CRACKING

ALONG LINING. SEVERAL AREAS OF MINOR TO MODERATE

CRACKING WITH EFFLORESCENCE IN PREVIOUSLY PATCHED

AREAS.

DRAIN CHASES CONSIST OF PVC PIPE AND CAPS, MAINLY AT NORTH

END. MINOR TO MODERATE CRACKING AND LEAKAGE ON SOME

DRAIN CHASES PARTICULARLY AT 250', 398' AND 408' FROM NORTH

PORTAL ON WEST LINING. CRACKING AND DELAMINATION ON DRAIN

CHASE AT 388' FROM NORTH PORTAL, BOTH SIDES.

59.2 MINOR DETERIORATION OF PORTAL MASONRY MORTAR. MINOR

EFFLORESCENCE ON MASONRY OF BOTH PORTALS. MINOR

VEGETATION GROWTH ON WEST SIDE OF NORTH PORTAL AND ON

EAST SIDE OF SOUTH PORTAL.

222.7 13'-4" VERTICAL CLEARANCE SIGNS AT NORTH APPROACH; 13'-5"

VERTICAL CLEARANCE SIGN AT SOUTH APPROACH. ACTUAL

VERTICAL CLEARANCE IS 13'-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 INVENTORY AND APPRAISAL STRUCTURE NO. 5140-150P

STRUCTURE IDENTIFICATION

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

(202) STRUCTURE NAME: .......... BUCK SPRING TUNNEL (2) STATE HWY. AGENCY DIST:

(203) STRUCTURE KIND: ............3 - TUNNEL (3) COUNTY CODE: ........................ 087 - HAYWOOD

(204) STRUCTURE NUMBER: ..... 5140-150P (4) CITY/PLACE CODE:

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

(206) ROUTE CODE NUMBER: ... 1 (6) FEATURES INTERSECTED:....... BUCK SPRING MOUNTAIN

(207) ROAD SECTION NO: .......... 150P (7) FACILITY CARRIED: .................. BLUE RIDGE PARKWAY

(208) NPS ROAD CLASS: ............ 1 - PRINCIPAL PARK ROAD (8) STATE STRUCTURE NO: .......... 5140150P0000000

(209) WITHIN NPS BNDRY?: ....... YES (9) LOCATION: ................................ 4.6 MILES TO U.S. ROUTE 2

(210) OPERATING UNIT: ............. BALSAM (10) INV. RTE. - MIN. VERT. CLR: .. 13.33 FT (4.06 M)

(211) PROJECT NO(S): ................ 2T5,2T2,2T10 (11) MILE POINT: ............................. 407.25 (KM PT 655.39)

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

1 - CONCRETE

18 - TUNNEL

29.7 FT (9.1 M)

468.0 FT (142.6 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. 5140-150P

GEOMETRY, TRAFFIC, AND NAVIGATIONAL DATA

(51) CURB TO CURB WIDTH: ........... 29.7 FT (9.1 M) (16) LATITUDE: ............................. 35°25'05.10"

(17) LONGITUDE: ......................... 82°44'48.90"

(19) DETOUR LENGTH: ............... 50 MI (80 KM)

(28A) LANES ON STRUCT:

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

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

(42B) SERVICE UNDER: .............. 0 - OTHER

(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)

(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

22.7 FT (6.9 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)

13.50 FT (4.11 M)

13.50 FT (4.11 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.

2 - REHAB/RECONSTRUCTION

C - MODERATE

$1,000

$40,000

$0

ADDITIONAL INFORMATION

(230) STRUCTURE HISTORY:

1985-LINING REHABILITATION. 2010-PARTIAL LINING REPAIR AND REPAVED WITH SHOULDER WORK.

(231) ADDITIONAL CONSIDERATIONS:

(330) ADDITIONAL CONFIG. INFO.:

APPENDIX STRUCTURE NO. 5140-150P

PHOTOGRAPHS STRUCTURE NO. 5140-150P

PHOTO #1 - NORTH PORTAL

PHOTO #2 - SOUTH PORTAL

PHOTO #3 - GENERAL TOPSIDE VIEW LOOKING SOUTH

PHOTO #4 - GENERAL ROADWAY VIEW LOOKING SOUTH

PHOTO #5 - POTHOLE IN NORTHBOUND LANE

NEAR NORTH PORTAL

PHOTO #6 - TRANSVERSE CRACKING ON

WEARING SURFACE AT NORTH END

PHOTO #7 - VEGETATION GROWTH IN JOINTS

ON WEST SIDE OF NORTH PORTAL

PHOTO #8 - SEALED CRACKING WITH

EFFLORESCENCE ON WEST LINING

APPROXIMATELY 40' FROM NORTH PORTAL

PHOTO #9 - CRACKING WITH

EFFLORESCENCE ON EAST LINING

APPROXIMATELY 40' FROM NORTH PORTAL

PHOTO #10 - CRACKING WITH

EFFLORESCENCE ON WEST LINING

APPROXIMATELY 50' FROM NORTH PORTAL

PHOTO #11 - SPALL WITH EXPOSED REBAR AT CROWN

APPROXIMATELY 70' FROM NORTH PORTAL

PHOTO #12 - SPALLING WITH EXPOSED REBAR ON WEST LINING

APPROXIMATELY 100' FROM NORTH PORTAL; NOTE ALSO PATCHED

AREA

PHOTO #13 - SEALED CRACKING ON EAST LINING APPROXIMATELY 110'

FROM NORTH PORTAL; NOTE TYPICAL EFFLORESCENCE

PHOTO #14 - SEALED CRACKING ON WEST LINING APPROXIMATELY

130' FROM NORTH PORTAL; NOTE SPALLING WITH EXPOSED REBAR;

NOTE ALSO PATCHED AREA

PHOTO #15 - SPALL WITH EXPOSED REBAR ON WEST LINING

APPROXIMATELY 165' FROM NORTH PORTAL

PHOTO #16 - SEALED CRACKING ON WEST LINING APPROXIMATELY

165' FROM NORTH PORTAL

PHOTO #17 - CRACKING WITH ACTIVE WATER

LEAKAGE ON WEST LINING APPROXIMATELY

250' FROM NORTH PORTAL

PHOTO #18 - TYPICAL POPOUTS ALONG EAST

WALL APPROXIMATELY 250' FROM NORTH

PORTAL

PHOTO #19 - SPALLING WITH EXPOSED

REBAR IN CROWN OF TUNNEL LINING

APPROXIMATELY 300' FROM NORTH PORTAL

PHOTO #20 - CRACKING AND DELAMINATION

ALONG DRAIN CHASE ON EAST SIDE AT 388'

FROM NORTH PORTAL; CONDITION IS SIMILAR

ON WEST SIDE

PHOTO #21 - SURFACE LEAKAGE AND

EFFLORESCENCE WITH DELAMINATION AT

PREVIOUS REPAIR ON WEST WALL

APPROXIMATELY 398' FROM NORTH PORTAL

PHOTO #22 - PATCH ON EAST WALL NEAR

SOUTH PORTAL

PHOTO #23 - VEGETATION GROWTH ALONG SHOULDER ON EAST SIDE

OF SOUTH PORTAL; NOTE ALSO POPOUTS AT EAST WALL