Bridge_Inspection_Rpt_STR_5140-149P.pdf

TUNNEL INSPECTION REPORT

LITTLE PISGAH RIDGE TUNNEL

BLUE RIDGE PARKWAY THROUGH LITTLE PISGAH RIDGE

BLUE RIDGE PARKWAY

NP

STRUCTURE NO. 5140-149P

INSPECTION TYPE: ROUTINE

INSPECTION DATE: 6/13/15

Report prepared by: SP

MILE POINT: 406.72

Federal Highway Administration KILOMETER POINT: 654.53 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. 5140-149P

LITTLE PISGAH RIDGE TUNNEL INSPECTION DATE: 6/13/15

TUNNEL IDENTIFICATION AND DESCRIPTION

LINING MATERIAL: ............... CONCRETE MINIMUM VERTICAL CLR: .... 14.5 FT (4.4 M)

SPRINGLINE LENGTH: ........ 28.6 FT (8.7 M) STRUCT. TOTAL LENGTH: ... 583.0 FT (177.7 M)

CURB TO CURB WIDTH: ..... 28.6 FT (8.7 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.

LOCATION

BLUE RIDGE PARKWAY MILE POINT: ..................... 406.72 (KM PT 654.53)

STATE: .................................. NORTH CAROLINA LOCATION: 5.0 MILES TO U.S. ROUTE 276

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

FEATURE INTERSECTED: ... LITTLE PISGAH RIDGE

STRUCTURE EVALUATION SUMMARY

This concrete lined tunnel is in fair condition overall. The main problem is the moderate deterioration with leakage along the drain chases near both portals. The water from several of these drain chases is beginning to leak onto the roadway below, causing a hazardous condition for motorists. The crown appears to be damp for the full length of the tunnel, indicating that water may be on top of the tunnel.

Other problems include minor spalling with exposed rebar at the crown of the tunnel lining, and a moderate deterioration of the roadway along the east curbline near the south portal. Finally, there are also several missing and damaged reflectors through the tunnel, and the edge of roadway striping is peeling in several locations.

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. 5140-149P

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.

59.8 REPAINT EDGE OF ROADWAY STRIPING. 1,200 LF $3 $4,000

59.1 CLEAN EXPOSED REBAR ON CROWN OF TUNNEL LINING AND SEAL WITH

APPROVED PROTECTIVE COATING.

1 LS $3,000 $3,000

222.7 REPLACE MISSING AND DAMAGED REFLECTORS ALONG SIDES OF TUNNEL AND

ALONG ROADWAY CENTER LINE AS NECESSARY

1 LS $2,000 $2,000

59.5 REPAIR ROADWAY ALONG EAST CURBLINE NEAR SOUTH PORTAL. 8 SF $50 $1,000

PRELIM. MAINTENANCE TOTAL : $10,000

ITEM

NO.

REHABILITATION/RECONSTRUCTION

(TYPICALLY NEEDED WITHIN 5 YEARS) QTY. UNIT UNIT

COST ESTIMATES

PRELIM. COST

REHAB. RECONSTR.

59.4 REPLACE LEAKING DRAIN CHASES NEAR BOTH PORTALS. 360 LF $750 $270,000 $0

59 CONTRACT COSTS FOR MOBILIZATION, TRAFFIC CONTROL, AND

DESIGN/CONSTRUCTION ENGINEERING.

1 LS $190,000 $190,000 $0

PRELIM. REHABILITATION/RECONSTRUCTION TOTAL : $460,000 $0

COST ESTIMATE SUMMARY

PRELIM. MAINTENANCE TOTAL:

PRELIM. REHABILITATION TOTAL:

PRELIM. RECONSTRUCTION TOTAL: ...

TOTAL ITEMIZED COSTS:

$0 $460,000 $10,000

$470,000

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.)

$470,000

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

FIELD INSPECTION REPORT STRUCTURE NO. 5140-149P

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) P

9. ADEQUACY OF OPENING SUFF

222. APPROACHES 7

N1. APPROACH SLABS

N2. RELIEF JOINTS

N3. APPROACH GUARDRAIL

G4. SURFACING

G5. EROSION

G6. SETTLEMENT

P7. 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

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.

ITEM REFERENCE AND REMARKS

59.1,4 MINOR SPALLING WITH EXPOSED REBAR ALONG CROWN

APPROXIMATELY 315', AND 507' FROM NORTH PORTAL. SEVERAL

SPALLS HAVE BEEN PATCHED; PATCHES FAILING HOWEVER.

MINOR CRACKING WITH EFFLORESCENCE AND LEAKAGE

THROUGHOUT TUNNEL. DAMPNESS ALONG CROWN END TO END.

SOME CRACKS INJECTED AND SEALED, PARTICULARLY AT 470

FROM NORTH PORTAL, ON BOTH SIDES.

MINOR TO MODERATE DETERIORATION AND LEAKAGE OF DRAIN

CHASES, MAINLY NEAR PORTALS; SEE ALSO 59.5.

59.2 EFFLORESCENCE FROM BOTH PORTAL MASONRY MORTAR JOINTS;

MINOR LEAKAGE ON WEST SIDE OF SOUTH PORTAL. MODERATE

JOINT DETERIORATION WITH VEGETATION GROWTH PRESENT.

59.3 MINOR GRAVEL ACCUMULATION ALONG BOTH CURBLINES.

59.5 MODERATE DETERIORATION OF ROADWAY ALONG EAST CURBLINE

NEAR SOUTH PORTAL. MINOR LEAKAGE ONTO ROADWAY FROM

DRAIN CHASES NEAR PORTALS.

59.8 MISSING AND DAMAGED REFLECTORS ON BOTH SIDES OF TUNNEL

LINING AND ALONG CENTER LINE OF ROADWAY. MODERATE TO

SEVERE DETERIORATION OF EDGE OF ROADWAY STRIPING; MINOR

DETERIORATION OF CENTERLINE.

222.7 13'-6", AND 14'-0" VERTICAL CLEARANCE SIGNS AT SOUTH AND

NORTH APPROACHES RESPECTIVELY. "TURN LIGHTS ON" SIGNS AT

BOTH APPROACHES.

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 5140-149P

STRUCTURE IDENTIFICATION

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

(202) STRUCTURE NAME: .......... LITTLE PISGAH RIDGE TUNNEL (2) STATE HWY. AGENCY DIST:

(203) STRUCTURE KIND: ............3 - TUNNEL (3) COUNTY CODE: ........................ 089 - HENDERSON

(204) STRUCTURE NUMBER: ..... 5140-149P (4) CITY/PLACE CODE:

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

(206) ROUTE CODE NUMBER: ... 1 (6) FEATURES INTERSECTED:....... LITTLE PISGAH RIDGE

(207) ROAD SECTION NO: .......... 149P (7) FACILITY CARRIED: .................. BLUE RIDGE PARKWAY

(208) NPS ROAD CLASS: ............ 1 - PRINCIPAL PARK ROAD (8) STATE STRUCTURE NO: .......... 5140149P0000000

(209) WITHIN NPS BNDRY?: ....... YES (9) LOCATION: ................................ 5.0 MILES TO U.S. ROUTE 2

(210) OPERATING UNIT: ............. GILLESPE (10) INV. RTE. - MIN. VERT. CLR: .. 14.30 FT (4.36 M)

(211) PROJECT NO(S): ................ 2T5,2T2,2T10 (11) MILE POINT: ............................. 406.72 (KM PT 654.53)

(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

28.6 FT (8.7 M)

583.0 FT (177.7 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. 5140-149P

GEOMETRY, TRAFFIC, AND NAVIGATIONAL DATA

(51) CURB TO CURB WIDTH: ........... 28.6 FT (8.7 M) (16) LATITUDE: ............................. 35°25'19.80"

(17) LONGITUDE: ......................... 82°44'30.80"

(19) DETOUR LENGTH: ............... 50 MI (80 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: ....................... 0.0 FT (0.0 M)

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

(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

28.6 FT (8.7 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)

14.50 FT (4.42 M)

14.50 FT (4.42 M)

(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

D - MINOR

$10,000

$460,000

$0

ADDITIONAL INFORMATION

(230) STRUCTURE HISTORY:

1985-LINING REHABILITATION.

(231) ADDITIONAL CONSIDERATIONS:

(330) ADDITIONAL CONFIG. INFO.:

APPENDIX STRUCTURE NO. 5140-149P

PHOTOGRAPHS STRUCTURE NO. 5140-149P

PHOTO #1 - NORTH PORTAL

PHOTO #2 - SOUTH PORTAL

PHOTO #3 - GENERAL UNDERSIDE VIEW LOOKING SOUTH

PHOTO #4 - GENERAL ROADWAY VIEW LOOKING SOUTH; NOTE

MISSING REFLECTORS FROM CENTERLINE

PHOTO #5 - EFFLORESCENCE ON RING

STONES AT WEST SIDE OF NORTH PORTAL

PHOTO #6 - VEGETATION GROWTH ALONG

THE WEST SIDE OF THE NORTH PORTAL

PHOTO #7 - SPALLING AND EFFLORESCENCE

ON WEST WALL 7' FROM NORTH PORTAL;

NOTE FADE REFLECTOR

PHOTO #8 - CRACKING WITH

EFFLORESCENCE ON WEST LINING NEAR

NORTH PORTAL

PHOTO #9 - SPALLING AND WATER LEAKAGE

AT DRAIN CHASE ON CROWN NEAR NORTH

PORTAL

PHOTO #10 - CRACKING WITH

EFFLORESCENCE ON WEST LINING AT 54'

FROM NORTH PORTAL; NOTE DETERIORATION

OF DRAIN CHASE, ACTIVE WATER LEAKAGE

AND AND SPALLING

PHOTO #11 - CRACKING WITH

EFFLORESCENCE ON EAST LINING AT 67'

FROM NORTH PORTAL

PHOTO #12 - CRACKING WITH

EFFLORESCENCE ON WEST LINING

APPROXIMATELY 110' FROM NORTH PORTAL

PHOTO #13 - MISSING ROADWAY STRIPING ON

EAST SIDE STARTING APPROXIMATELY 110'

FROM NORTH PORTAL; NOTE MOST STRIPING

IS FADED OR MISSING

PHOTO #14 - CRACKING WITH

EFFLORESCENCE ON EAST LINING

APPROXIMATELY 200' FROM NORTH PORTAL

PHOTO #15 - SPALLING WITH EXPOSED

REBAR AT CROWN AT 214' FROM NORTH

PORTAL

PHOTO #16 - CRACKS WITH EFFLORESCENCE

ALONG REPAIRED EAST DRAIN CHASE AT 234'

FROM NORTH PORTAL; NOTE NO WATER

LEAKAGE AT TIME; NOTE ALSO DAMAGED

REFLECTOR

PHOTO #17 - SPALLING WITH EXPOSED REBAR AT SEVERAL

LOCATIONS ALONG CROWN, LOCATION APPROXIMATELY 315' FROM

NORTH PORTAL SHOWN

PHOTO #18 - SPALL WITH EXPOSED REBAR ON GROUND AT 337' FROM

PHOTO #19 - SPALL WITH EXPOSED REBAR

ALONG DRAIN CHASE ON EAST SIDE AT 392'

FROM NORTH PORTAL NEAR GROWN; SIMILAR

ON SPOTS NEAR CROWN

PHOTO #20 - SCALING ALONG BASE OF WEST

WALL APPROXIMATELY 400' TO 430' FROM