Bridge_Inspection_Rpt_STR_5460-016P.pdf

STRUCTURE SUMMARY STRUCTURE NO. 5460-016P

BOTE MOUNTAIN TUNNEL INSPECTION DATE: 6/20/18

TUNNEL IDENTIFICATION AND DESCRIPTION

LINING MATERIAL: ............... CONCRETE MINIMUM VERTICAL CLR: .... 13.2 FT (4.0 M)

SPRINGLINE LENGTH: ........ 30.0 FT (9.1 M) STRUCT. TOTAL LENGTH: ... 121.0 FT (36.9 M)

CURB TO CURB WIDTH: ..... 30.0 FT (9.1 M) YEAR BUILT:

PROJ./PLAN REF. NO: ......... 000000000000 / NONE YEAR RECONSTRUCTED: ....N/A

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

STRUCTURE HISTORY: ...... 2002 - ROADWAY AND APPROACHES RESURFACED. 2012 - POTHOLES PATCHED AND

PAVEMENT RESTRIPED.

LOCATION

GREAT SMOKY MOUNTAINS NATIONAL PARK MILE POINT: ..................... 1.15 (KM PT 1.85)

STATE: .................................. TENNESSEE LOCATION: 6.6 MI TO TOWNSEND WYE

FACILITY CARRIED: ............. LAUREL CREEK ROAD

FEATURE INTERSECTED: ... BOTE MOUNTAIN

STRUCTURE EVALUATION SUMMARY

This concrete lined tunnel is in poor condition overall. The main problems at this time are deterioration of the lining, including cracking with efflorescence and spalling; and deterioration of the drain chases, with leakage evident throughout the lining.

Additional problems include soil and debris accumulation along the tunnel lining; loose and fractured rocks near the northwest approach shoulder and above the portals; and a 15" deep drop-off along the east shoulder at the north approach. It should also be noted that there is loose concrete on the crown of the tunnel along the second construction joint from the south portal; this condition could pose a hazard to traffic passing through the tunnel.

Since the last inspection the roadway was resurfaced, centerline restriped and the drain inlets at the the north approach were cleaned.

Corrective action 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: B. BUMPERS, T. POWELL (VOLKERT, INC.)

CONDITION ASSESSMENT:

BRITT BUMPERS, P.E., FIELD TEAM LEADER

REPORT REVIEW:

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

REPORT APPROVAL: DATE: 11/8/18

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

RECOMMENDATIONS AND ESTIMATED COSTS STRUCTURE NO. 5460-016P

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.

B226 PRIORITY OF IMPROVEMENT

ITEM

NO.

ROUTINE MAINTENANCE QTY. UNIT UNIT

COST

PRELIM.

COST

ESTIMATE

59.4 REMOVE SOIL AND DEBRIS ALONG LINING. 1 LS

PRELIM. MAINTENANCE TOTAL :

ITEM

NO.

REHABILITATION/RECONSTRUCTION

(TYPICALLY NEEDED WITHIN 5 YEARS)

QTY. UNIT

UNIT

COST

PRELIM. COST

ESTIMATES

REHAB. RECONSTR.

59.1,4 REPAIR CONCRETE TUNNEL LINING. REPLACE TUNNEL DRAINAGE

SYSTEM.

1 LS

223.5 FILL AND STABILIZE EROSION AT SOUTHEAST AND NORTH

APPROACH SHOULDERS. REMOVE LOOSE ROCKS NEAR WEST

SHOULDER IN NORTH APPROACH AND ABOVE PORTALS.

1 LS

59.1 REMOVE LOOSE CONCRETE FROM SPALLED AREA ON CROWN

ALONG SECOND CONSTRUCTION JOINT FROM SOUTH PORTAL.

1 LS

CONTRACT COSTS FOR MOBILIZATION, TRAFFIC CONTROL,

DESIGN, AND CONSTRUCTION ENGINEERING.

1 LS

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. 5460-016P

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.

3 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.

2 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.

1 “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.

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)

59. TUNNEL 4

P1. LINING

F2. PORTALS

N3. CURBS AND SIDEWALKS

P4. DRAINS AND DRAINAGE

G5. WEARING SURFACE

G6. RIDEABILITY

N7. LIGHTING

N8. OTHER

9. ADEQUACY OF OPENING SUFF

222. APPROACHES 6

N1. APPROACH SLABS

N2. RELIEF JOINTS

N3. APPROACH GUARDRAIL

G4. SURFACING

F5. 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

TRAFFIC SAFETY RATING CODES

0 - Does not meet standards or a safety feature is required and none is provided.

1 - Meets currently acceptable standards.

N - Not applicable or a safety feature is not required.

ITEM REFERENCE AND REMARKS

59.1 MINOR TO MODERATE SPALLING AT SPRINGLINE. SEVERAL LARGE

VOIDS ALONG SPRINGLINE AT CONSTRUCTION JOINTS WITH

LEAKAGE. MINOR DELAMINATION OF EAST LINING NEAR SOUTH

PORTAL WITH 3.5' X 2' SPALLED AREA.

MODERATE FULL-DEPTH SPALL (8' L X 1.5' W X 8" D) AT CROWN

ALONG SECOND CONSTRUCTION JOINT FROM SOUTH PORTAL;

SPALLED CONCRETE STILL ATTACHED POSES POTENTIAL RISK TO

MOTORISTS (EXPOSED REBAR COULD NOT BE VERIFIED DURING

THIS INSPECTION).

MINOR TO MODERATE CRACKING WITH EFFLORESCENCE AND

LEAKAGE ALONG CONSTRUCTION JOINTS. MODERATE

DETERIORATION ALONG DRAIN CHASES WITH CRACKING,

SPALLING, EFFLORESCENCE, AND WATER LEAKAGE. MINOR

CRACKING WITH EFFLORESCENCE AT OTHER LOCATIONS.

AREAS OF MINOR SCALING AT VERTICAL CONSTRUCTION JOINTS;

MODERATE SCALING THROUGHOUT LOWER PORTIONS OF LINING.

59.2 MODERATE LEAKAGE WITH MODERATE EFFLORESCENCE ON

NORTH PORTAL MASONRY. MODERATE EFFLORESCENCE ON

SOUTH PORTAL.

MODERATE MOSS, TREES, AND VEGETATION GROWTH IN RING

STONE MASONRY MORTAR JOINTS AND ABOVE BOTH PORTALS.

POTENTIAL LOOSE ROCKS ABOVE PORTALS.

59.4 POOR DRAINAGE DUE TO DETERIORATED AND CLOGGED DRAIN

CHASES. MINOR TO MODERATE SOIL AND DEBRIS ACCUMULATION,

UP TO 2" DEEP, ALONG LINING.

59.5, 222.4 EDGE OF ROADWAY STRIPING NOT PROVIDED.

FIELD INSPECTION REPORT STRUCTURE NO. 5460-016P

ADDITIONAL ITEM REFERENCE AND REMARKS

222.5 DROP-OFF, UP TO 15" DEEP, AT SOUTHEAST AND NORTH APPROACH SHOULDERS. SHOULDER DROP-OFF (8' L X

4' W X 1.5' D) AT SOUTHEAST CORNER, 15' FROM STRUCTURE; ATTEMPTS MADE TO REPAIR.

FRACTURED AND LOOSE ROCKS AT NORTHWEST AND SOUTHWEST APPROACHES. UNDERMINED TREE AT

NORTHWEST APPROACH BANK APPROXIMATELY 30' FROM NORTH PORTAL.

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 5460-016P

STRUCTURE IDENTIFICATION

(201) PARK: GREAT SMOKY MOUNTAINS NATIONAL PARK (1) STATE: ....................................... 474 - TENNESSEE (TN)

(202) STRUCTURE NAME: .......... BOTE MOUNTAIN TUNNEL (2) STATE HWY. AGENCY DIST:

(203) STRUCTURE KIND: ............3 - TUNNEL (3) COUNTY CODE: ........................ 009 - BLOUNT

(204) STRUCTURE NUMBER: ..... 5460-016P (4) CITY/PLACE CODE:

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

(206) ROUTE CODE NUMBER: ... 15 (6) FEATURES INTERSECTED:....... BOTE MOUNTAIN

(207) ROAD SECTION NO: ..........016P (7) FACILITY CARRIED: .................. LAUREL CREEK ROAD

(208) NPS ROAD CLASS: ............ 1 - PRINCIPAL PARK ROAD (8) STATE STRUCTURE NO: .......... 5460016P0000000

(209) WITHIN NPS BNDRY?: .......YES (9) LOCATION: ................................ 6.6 MI TO TOWNSEND WYE

(210) OPERATING UNIT: ............. N. DIST. (10) INV. RTE. - MIN. VERT. CLR: .. 14.20 FT (4.33 M)

(211) PROJECT NO(S): ................000000000000 (11) MILE POINT: .............................1.15 (KM PT 1.85)

(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

18 - TUNNEL

30.0 FT (9.1 M)

121.0 FT (36.9 M)

0 - UNKNOWN

0 - UNKNOWN

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: ......... A - OPEN, NO RESTRICTION

(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: 6/18 (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. 5460-016P

GEOMETRY, TRAFFIC, AND NAVIGATIONAL DATA

(16) LATITUDE: ............................. 35°38'58.50"

(17) LONGITUDE: ......................... 83°42'54.90"

(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?: ... 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: ....................... 3.7 FT (1.1 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)

30.0 FT (9.1 M)

34.0 FT (10.4 M)

24.0 FT (7.3 M)

5.0 FT (1.5 M)

5.0 FT (1.5 M)

0 - NO MEDIAN

0 °

NO

30.0 FT (9.1 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)

13.17 FT (4.01 M)

0.00 FT (0.00 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

B - MAJOR

ADDITIONAL INFORMATION

(230) STRUCTURE HISTORY:

2002 - ROADWAY AND APPROACHES RESURFACED. 2012 - POTHOLES PATCHED AND PAVEMENT RESTRIPED.

2018 - ROADWAY AND APPROACHES RESURFACED WITH CENTERLINE RESTRIPED.

(231) ADDITIONAL CONSIDERATIONS:

(330) ADDITIONAL CONFIG. INFO.:

https://83�42'54.90 https://35�38'58.50

APPENDIX STRUCTURE NO. 5460-016P

PHOTOGRAPHS STRUCTURE NO. 5460-016P

PHOTO #1 - NORTH PORTAL

PHOTO #2 - SOUTH PORTAL

PHOTO #3 - GENERAL VIEW OF ROADWAY LOOKING NORTH; NOTE

RESURFACED ROADWAY

PHOTO #4 - GENERAL UNDERSIDE VIEW OF LINING LOOKING NORTH

PHOTO #5 - SHOULDER DROP-OFF AT EAST SHOULDER OF SOUTH

APPROACH

PHOTO #6 - LOOSE ROCK AT WEST SIDE OF SOUTH PORTAL

PHOTO #7 - VEGETATION GROWTH OVERHANGING ROADWAY AT

SOUTH PORTAL

PHOTO #8 - TYPICAL SPALLING OF LINING AT SPRINGLINE, EAST

LINING NEAR SOUTH PORTAL SHOWN; NOTE LEAKAGE

PHOTO #9 - SPALLING OF CROWN ALONG SECOND CONSTRUCTION

JOINT FROM SOUTH PORTAL

PHOTO #10 - CLOSE-UP OF SPALLING OF CROWN; NOTE SPALLED

CONCRETE STILL ATTACHED

PHOTO #11 - TYPICAL SPALLING OF LINING AT SPRINGLINE, EAST

LINING NEAR MID-LENGTH SHOWN; NOTE LEAKAGE

PHOTO #12 - GENERAL VIEW OF CRACKING WITH EFFLORESCENCE

ON EAST LINING; NOTE ACTIVE LEAKAGE

PHOTO #13 - TYPICAL CRACKING WITH EFFLORESCENCE ON LINING,

EAST LINING SHOWN

PHOTO #14 - TYPICAL CRACKING WITH EFFLORESCENCE AND RUST

STAINING ON LINING, CROWN OF LINING NEAR MID-LENGTH SHOWN

PHOTO #15 - TYPICAL SOIL AND DEBRIS ACCUMULATION ALONG

LININGS, EAST LINING SHOWN

PHOTO #16 - TYPICAL SPALLING OF LINING AT SPRINGLINE, WEST

LINING NEAR NORTH PORTAL SHOWN

PHOTO #17 - TYPICAL CRACKING WITH EFFLORESCENCE AND

LEAKAGE ON LINING, EAST LINING NEAR NORTH PORTAL SHOWN

PHOTO #18 - TYPICAL EFFLORESCENCE ON PORTAL RING STONES,

NORTH PORTAL SHOWN; NOTE LEAKAGE

PHOTO #19 - DEBRIS ACCUMULATION REMOVED FROM INLET AT EAST

SIDE OF NORTH PORTAL; NOTE SHOULDER DROP-OFF

PHOTO #20 - DEBRIS ACCUMULATION REMOVED FROM INLET AT WEST

SIDE OF NORTH PORTAL

PHOTO #21 - TYPICAL MOSS AND VEGETATION GROWTH ON PORTAL

RING STONES, NORTH PORTAL SHOWN

PHOTO #22 - TYPICAL POTENTIAL LOOSE ROCK ABOVE PORTALS,

NORTH PORTAL SHOWN

PHOTO #23 - FRACTURED ROCK AT NORTHWEST APPROACH

PHOTO #24 - UNDERMINED TREE AT NORTHWEST APPROACH BANK

APPROXIMATELY 30' FROM NORTH PORTAL