Bridge_Inspection_Report_5460-016P_Bote_Mountain_Tunnel.pdf

TUNNEL INSPECTION REPORT

BOTE MOUNTAIN TUNNEL

LAUREL CREEK ROAD THROUGH BOTE MOUNTAIN

GREAT SMOKY MOUNTAINS NATIONAL PARK

NP

STRUCTURE NO. 5460-016P

INSPECTION TYPE: ROUTINE

INSPECTION DATE: 5/17/16

SPReport prepared by:

Federal Highway Administration FLH Office of Bridges and Structures 21400 Ridgetop Circle Sterling, VA 20166 703-404-6201 https://bridge.flhd.fhwa.dot.gov http:https://bridge.flhd.fhwa.dot.gov

STRUCTURE NO. 5460 016P

BOTE MOUNTAIN TUNNEL INSPECTION DATE: 5/17/16

STRUCTURE SUMMARY

TUNNEL IDENTIFICATION AND DESCRIPTION

LINING MATERIAL: ............... CONCRETE MINIMUM VERTICAL CLR: .... 13.1 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 fair to poor structural condition, and exhibits deterioration of the concrete lining and drain chases, with moderate to heavy water leakage through the lining and onto the roadway pavement. Loose concrete at the crown of the tunnel could pose a hazard to traffic passing through the tunnel, as could the wet pavement, particularly in freezing conditions.

Additional problems include potholes and faded striping at the north approach pavement; clogged drains at the north end, moderate soil and debris accumulation along the curblines, loose and fracture rocks near west shoulder at the north approach; and a 10" deep drop-off in the east shoulder at the north approach. The previously patched potholes along the centerline are starting to deteriorate.

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: G. GOODLIN, H. SALAD

CONDITION ASSESSMENT:

GARY J. GOODLIN, FIELD TEAM LEADER 703-404-6253

REPORT REVIEW:

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

REPORT APPROVAL: DATE: 9/30/16

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

RECOMMENDATIONS AND ESTIMATED COSTS STRUCTURE NO. 5460 016P

226 PRIORITY OF IMPROVEMENT B

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.

ITEM

NO.

MAINTENANCE RECOMMENDATIONS

(GENERALLY NOT FLHP ELIGIBLE)

QTY. UNIT COST

UNIT

ESTIMATE

COST

PRELIM.

222.5 BACKFILL EROSION AT NORTHEAST AND SOUTHEAST APPROACH SHOULDERS.

REMOVE LOOSE ROCKS NEAR WEST SHOULDER IN NORTH APPROACH AND

ABOVE PORTALS.

1 LS

59.4 REMOVE DEBRIS, UNCLOG DRAINS, AND REGRADE AROUND DRAINS AT NORTH

APPROACH. REMOVE SOIL AND DEBRIS FROM ALONG CURBLINES.

1 LS

PRELIM. MAINTENANCE TOTAL :

ITEM

REHABILITATION/RECONSTRUCTION

QTY. UNIT

UNIT

COST ESTIMATES

PRELIM. COST

NO (TYPICALLY NEEDED WITHIN 5 YEARS)

REHAB. RECONSTR.

59.1,4 REPAIR CONCRETE TUNNEL LINING. REPLACE TUNNEL DRAINAGE

SYSTEM.

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.

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

F1. LINING

F PORTALS2.

NCURBS AND SIDEWALKS3.

P 4. DRAINS AND DRAINAGE

G 5. WEARING SURFACE

G 6. RIDEABILITY

N 7. LIGHTING

N 8. OTHER

9. ADEQUACY OF OPENING SUFF

222. APPROACHES 6

N 1. APPROACH SLABS

N 2. RELIEF JOINTS

N 3. APPROACH GUARDRAIL

G 4. SURFACING

F 5. EROSION

G 6. SETTLEMENT

N 7. SIGNS

G 8. ALIGNMENT

N 9. 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

N C. APPROACH GUARDRAILS

N D. 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 MODERATE TO SEVERE SPALLS AT SPRINGLINE. SEVERAL LARGE

VOIDS ALONG SPRINGLINE AT CONSTRUCTION JOINTS WITH

LEAKAGE. MINOR DELAMINATION OF LINING ON EAST AND WEST

SIDES NEAR SOUTH PORTAL WITH 3.5' X 2' SPALLED AREA.

MODERATE FULL-DEPTH SPALL (8'L X 1.5'W X 8"D) WITH EXPOSED

REBAR AT CROWN AT SECOND CONSTRUCTION JOINT FROM SOUTH

PORTAL.

MINOR TO MODERATE CRACKING WITH EFFLORESCENCE AND

LEAKAGE ALONG TUNNEL LINING CONSTRUCTION JOINTS.

MODERATE DETERIORATION IN DRAIN CHASE AREAS WITH

CRACKING, SPALLING, EFFLORESCENCE, AND WATER LEAKAGE.

MINOR CRACKING WITH EFFLORESCENCE AT OTHER LOCATIONS.

AREAS OF MINOR SCALING AT VERTICAL CONSTRUCTION JOINTS;

MODERATE SCALING IN LOWER PORTION OF WALL THROUGHOUT.

59.2 MODERATE TO SEVERE 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.

59.4 POOR DRAINAGE DUE TO DETERIORATED AND CLOGGED DRAIN

CHASES. DRAINS AT NORTH END CLOGGED AND COVERED WITH

DEBRIS. MODERATE SOIL AND DEBRIS ACCUMULATION (6"D) ALONG

CURBLINES.

59.5, 222.4 PATCHED POTHOLES ALONG CENTERLINE OF ROADWAY

THROUGHOUT TUNNEL, AND FADED STRIPING.

222.5 10" DEEP DROP-OFF AT NORTHEAST APPROACH SHOULDER.

SEVERE EROSION HOLE (8'L X 4'W X 3'D) AT SOUTHEAST CORNER,

15' FROM STRUCTURE.

FRACTURE AND LOOSE ROCKS AT NORTHWEST AND SOUTHEAST

APPROACHES.

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 5460 016P

STRUCTURE IDENTIFICATION

(201) PARK: GREAT SMOKY MOUNTAINS NATIONAL PARK

(202) STRUCTURE NAME:

(203) STRUCTURE KIND:

(204) STRUCTURE NUMBER:

(205) NPS REGION:

(206) ROUTE CODE NUMBER: ...

(207) ROAD SECTION NO:

(208) NPS ROAD CLASS:

(209) WITHIN NPS BNDRY?:

(210) OPERATING UNIT:

(211) PROJECT NO(S):

(212) DRAWING NUMBERS:

(21) MAINTAINED BY:

(22) OWNER:

BOTE MOUNTAIN TUNNEL

3 - TUNNEL

5460-016P

4 - SOUTHEAST

016P

1 - PRINCIPAL PARK ROAD

YES

N. DIST.

000000000000

NONE

66 - NATIONAL PARK SERVICE

66 - NATIONAL PARK SERVICE

(1) STATE:

(2) STATE HWY. AGENCY DIST:

(3) COUNTY CODE:

(4) CITY/PLACE CODE:

(5) INVENTORY ROUTE:

(6) FEATURES INTERSECTED:

(7) FACILITY CARRIED:

(8) STATE STRUCTURE NO:

(9) LOCATION:

(10) INV. RTE. - MIN. VERT. CLR: ..

(11) MILE POINT:

(27) YEAR BUILT:

(106) YEAR RECONSTRUCTED:

(20) TOLL:

(37) HISTORICAL DESIGNATION: ..

474 - TENNESSEE (TN)

009 - BLOUNT

264000150

BOTE MOUNTAIN

LAUREL CREEK ROAD

5460016P0000000

6.6 MI TO TOWNSEND WYE

14.20 FT (4.33 M)

1.15 (KM PT 1.85)

N/A

3 - FREE ROAD

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

YES(218) IS SALT USED?:

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: 5/16 (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" (51) CURB TO CURB WIDTH: ........... 30.0 FT (9.1 M)

(17) LONGITUDE: ......................... 83°42'54.90" (52) DECK WIDTH: ............................ 30.0 FT (9.1 M)

(19) DETOUR LENGTH: ............... 50 MI (80 KM) (32) APPR. ROADWAY WIDTH: ........ 34.0 FT (10.4 M)

(28A) LANES ON STRUCT: .......... 00 (213) APPR. PAVEMENT WIDTH: ..... 24.0 FT (7.3 M)

(28B) LANES UNDER STRUCT: ... 02 LEFT SHOULDER: .................. 5.0 FT (1.5 M)

(42A) SERVICE ON: ..................... 1 - HIGHWAY RIGHT SHOULDER: ................ 5.0 FT (1.5 M)

(42B) SERVICE UNDER: .............. 0 - OTHER (33) BRIDGE MEDIAN: ....................... 0 - NO MEDIAN

(29) AVG. DAILY TRAFFIC: .......... 3060 (34) SKEW ANGLE: ............................ 0 °

(30) YEAR OF ADT: ...................... 2012 (35) DECK FLARE?: ........................... NO

(114) FUTURE ADT: ..................... 3366 (47) TOTAL HORIZ. CLEARANCE: .... 30.0 FT (9.1 M)

(115) YEAR OF FUTURE ADT: ..... 2032 (50) SIDEWALKS:

(101) PARALLEL STRUCTURE: ... N - NONE LEFT : ...................................... 0.0 FT (0.0 M)

(38) NAVIGATION CONTROL?: ... N RIGHT : ................................... 0.0 FT (0.0 M)

(39) VERTICAL CLEARANCE: ...... 0.0 FT (0.0 M) (214) BRIDGE RAIL TYPE:

(40) HORIZ. CLEARANCE: ........... 0.0 FT (0.0 M) RAIL CONFIGURATION: ......... 0 - N/A

(111) ABUT. OR PIER PROT: ....... MATERIAL: .............................. 0 - N/A

DESIGN TYPE: ........................ 0 - N/A

LATERAL UNDERCLEARANCE:

(55) RIGHT: ....................... 3.7 FT (1.1 M) (215) BRIDGE RAIL HEIGHT: ............ 0.00 FT (0.00 M)

(56) LEFT: ......................... 0.0 FT (0.0 M) (53) MIN. VRT. CLEAR. OVER DECK: 13.08 FT (3.99 M)

(54) MIN. VRT. UNDERCLEARANCE: 13.08 FT (3.99 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 - Not over waterway.

2 - REHAB/RECONSTRUCTION

B - MAJOR

ADDITIONAL INFORMATION

(230) STRUCTURE HISTORY:

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

(231) ADDITIONAL CONSIDERATIONS:

(330) ADDITIONAL CONFIG. INFO.:

http:83�42'54.90 http: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 TUNNEL LINING LOOKING SOUTH;

NOTE LONGITUDINAL CRACKING WITH EFFLORESCENCE ALONG

CROWN

PHOTO #4 - TYPICAL SPALLING OF TUNNEL LINING AT SPRINGLINE,

WEST WALL NEAR NORTH PORTAL

STRUCTURE NO. 5460 016P

PHOTO #5 - TYPICAL SPALLING OF TUNNEL

LINING AT SPRINGLINE; EAST WALL NEAR

SOUTH PORTAL SHOWN

PHOTO #6 - SPALLING ALONG SECOND

CONSTRUCTION JOINT FROM SOUTH PORTAL

AT CROWN

PHOTOGRAPHS

PHOTO #7 - CLOSE UP OF SPALLING

REFERENCED IN PREVIOUS PHOTO

PHOTO #8 - TYPICAL CRACKING WITH

EFFLORESCENCE AND LEAKAGE ALONG

TUNNEL LINING CONSTRUCTION JOINTS,

EAST WALL NEAR NORTH PORTAL

PHOTO #9 - TYPICAL CRACKING WITH EFFLORESCENCE OF TUNNEL

LINING THROUGHOUT

PHOTO #10 - TYPICAL CRACKING WITH EFFLORESCENCE OF TUNNEL

LINING THROUGHOUT

PHOTO #11 - TYPICAL EFFLORESCENCE ON

RING STONES AT PORTALS WITH ACTIVE

WATER LEAKAGE, NORTH PORTAL SHOWN

PHOTO #12 - FRACTURE ROCKS AT

NORTHWEST APPROACH

PHOTO #13 - LOOSE ROCK AT SOUTHEAST APPROACH

PHOTO #14 - UNDERMINED TREE AT NORTHWEST APPROACH BANK

ABOUT 15FT FROM NORTH PORTAL; ALSO NOTE DEEP VOID BEHIND

ROCK ADJACENT TO ROADWAY

STRUCTURE NO. 5460 016PPHOTOGRAPHS

PHOTO #15 - CLOGGED DRAIN AT

NORTHWEST CORNER

BOTE MOUNTAIN TUNNEL INSPECTION DATE: 5/17/16

STRUCTURE NO. 5460 016P

PHOTO #16 - 10" DEEP DROP-OFF AT

NORTHEAST APPROACH SHOULDER

PHOTOGRAPHS

PHOTO #17 - TYPICAL SOIL AND DEBRIS

ACCUMULATION ALONG CURBLINES; WEST

CURBLINE SHOWN

PHOTO #18 - TYPICAL PATCHED POTHOLES

ALONG CENTERLINE, NEAR NORTH PORTAL

SHOWN