Bridge Inspection Rpt_STR 5460-009P.pdf

STRUCTURE SUMMARY STRUCTURE NO. 5460-009P

MORTON MOUNTAIN TUNNEL INSPECTION DATE: 6/21/18

TUNNEL IDENTIFICATION AND DESCRIPTION

LINING MATERIAL: ............... CONCRETE MINIMUM VERTICAL CLR: .... 15.8 FT (4.8 M)

SPRINGLINE LENGTH: ........ 274.0 FT (83.5 M) STRUCT. TOTAL LENGTH: ... 274.0 FT (83.5 M)

CURB TO CURB WIDTH: ..... 26.1 FT (8.0 M) YEAR BUILT:

PROJ./PLAN REF. NO: ......... 1A14 / NONE YEAR RECONSTRUCTED:

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

STRUCTURE HISTORY: ...... 2002-TUNNEL LINING AND DRAINAGE SYSTEM REHABILITATED; SIDEWALLS CONSTRUCTED;

GRADE OF ROADWAY LOWERED; 2012 - ROADWAY RESURFACED.

LOCATION

GREAT SMOKY MOUNTAINS NATIONAL PARK MILE POINT: ..................... 13.85 (KM PT 22.29)

STATE: .................................. TENNESSEE LOCATION: 1.8 MILES NORTH FROM NEWFOUND

GAP.FACILITY CARRIED: ............. NEWFOUND GAP ROAD

FEATURE INTERSECTED: ... MORTON MOUNTAIN

STRUCTURE EVALUATION SUMMARY

This concrete-lined tunnel is in fair condition overall. The main problem at this time is the active leakage through some deteriorated areas along the drain chases and ring stones. Other problems include cracking of the lining throughout the tunnel; displaced cap stones at the southwest and northeast approach guardwalls; missing reflectors along the east barrier wall near the south portal; partially clogged grate inlets at the south approach; and a fallen tree overhanging the south portal.

The deteriorated areas of the lining should be repaired, and the drainage system improved to help prevent further deterioration and additional leakage into the tunnel.

Since the last inspection, the loose rock has been removed from the east side of the south portal.

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: 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. 5460-009P

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.

C226 PRIORITY OF IMPROVEMENT

ITEM

NO.

ROUTINE MAINTENANCE QTY. UNIT UNIT

COST

PRELIM.

COST

ESTIMATE

222.7 REPLACE MISSING REFLECTORS ALONG EAST BARRIER WALL NEAR SOUTH

PORTAL.

10 EA

59.4 REMOVE DEBRIS ACCUMULATION FROM GRATE INLETS AT SOUTH APPROACH. 1 LS

59.2 REMOVE FALLEN TREE OVERHANGING SOUTH PORTAL. 1 LS

PRELIM. MAINTENANCE TOTAL :

ITEM

NO.

REHABILITATION/RECONSTRUCTION

(TYPICALLY NEEDED WITHIN 5 YEARS)

QTY. UNIT

UNIT

COST

PRELIM. COST

ESTIMATES

REHAB. RECONSTR.

59.4 REPAIR/IMPROVE DRAINAGE SYSTEM THROUGHOUT TUNNEL. 1 LS

59.1 REPAIR DELAMINATION AND SPALLING OF LINING THROUGHOUT

STRUCTURE.

1 LS

222.3 REALIGN AND REPOINT CAPSTONES ON SOUTHWEST AND

NORTHEAST APPROACH GUARDWALLS.

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. 5460-009P

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 6

F1. LINING

G2. PORTALS

F3. CURBS AND SIDEWALKS

F4. DRAINS AND DRAINAGE

G5. WEARING SURFACE

G6. RIDEABILITY

N7. LIGHTING

G8. OTHER (STRIPING)

9. ADEQUACY OF OPENING SUFF

222. APPROACHES 7

N1. APPROACH SLABS

N2. RELIEF JOINTS

G3. APPROACH GUARDRAIL

G4. SURFACING

G5. EROSION

G6. SETTLEMENT

G7. SIGNS

F8. 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

59.1,4 MINOR TO MODERATE VERTICAL CRACKING WITH EFFLORESCENCE

ON TUNNEL LINING; ISOLATED CRACKS EXTEND FULL

CIRCUMFERENCE OF TUNNEL. MODERATE PAINT FAILURE OF

LINING AND DRAINAGE CHASE PLATES. MINOR SPALLING OF LINING

AT DRAINAGE CHASES. MINOR TO MODERATE SPALLING OF EAST

LINING NEAR NORTH PORTAL WITH EVIDENCE OF LEAKAGE

THROUGH SPALL. MINOR TO MODERATE DELAMINATION AND

SPALLING OF LINING AT CROWN AND AT EAST SIDE ALONG SECOND

DRAIN CHASE FROM NORTH PORTAL. MINOR SPALLING OF LINING

ALONG CENTERLINE AT APPROXIMATELY MID-LENGTH.

MINOR SPALLING WITH EXPOSED REBAR ON CROWN NEAR SOUTH

AND NORTH PORTALS.

59.2 MINOR VEGETATION GROWTH IN MASONRY MORTAR JOINTS AT

BOTH PORTALS. MINOR EFFLORESCENCE ON MORTAR JOINTS OF

RING STONES AT BOTH PORTALS; MINOR MOSS AND VEGETATION

GROWTH ON MASONRY. LARGE FALLEN TREE OVERHANGS SOUTH

PORTAL.

59.3 MINOR VERTICAL CRACKING WITH EFFLORESCENCE ON BARRIER

WALLS; MINOR VEHICULAR SCRAPES.

59.4 MINOR EFFLORESCENCE AT DRAIN CHASES. FIBERGLASS PLATES

HAVE PREVIOUSLY BEEN INSTALLED OVER DRAIN CHASES. MINOR

DEBRIS ACCUMULATION ON GRATE INLETS AT BOTH SIDES OF

SOUTH PORTAL.

222.3 MINOR TO MODERATE APPROACH GUARDWALL MASONRY MORTAR

DETERIORATION. DISPLACED CAPSTONE ON SOUTHWEST

APPROACH GUARDWALL NEAR SOUTH PORTAL. DISPLACED

CAPSTONES ON NORTHEAST GUARDWALL DUE TO COLLISION

DAMAGE.

222.4 MODERATE DETERIORATION OF APPROACH PAVEMENT AT

JUNCTION WITH GRATE INLET AT WEST SIDE OF SOUTH APPROACH.

222.7 MISSING REFLECTORS ALONG EAST BARRIER WALL NEAR SOUTH

PORTAL. "TUNNEL USE LIGHTS" SIGNS AT APPROACHES.

FIELD INSPECTION REPORT STRUCTURE NO. 5460-009P

ADDITIONAL ITEM REFERENCE AND REMARKS

222.8 TUNNEL IN SHARP HORIZONTAL CURVE.

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 5460-009P

STRUCTURE IDENTIFICATION

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

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

(203) STRUCTURE KIND: ............3 - TUNNEL (3) COUNTY CODE: ........................ 155 - SEVIER

(204) STRUCTURE NUMBER: ..... 5460-009P (4) CITY/PLACE CODE:

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

(206) ROUTE CODE NUMBER: ... 10 (6) FEATURES INTERSECTED:....... MORTON MOUNTAIN

(207) ROAD SECTION NO: ..........009P (7) FACILITY CARRIED: .................. NEWFOUND GAP ROAD

(208) NPS ROAD CLASS: ............ 1 - PRINCIPAL PARK ROAD (8) STATE STRUCTURE NO: .......... 5460009P0000000

(209) WITHIN NPS BNDRY?: .......YES (9) LOCATION: ................................ 1.8 MILES NORTH FROM NEW

(210) OPERATING UNIT: ............. N. DIST. (10) INV. RTE. - MIN. VERT. CLR: .. 16.00 FT (4.88 M)

(211) PROJECT NO(S): ................1A14 (11) MILE POINT: .............................13.85 (KM PT 22.29)

(212) DRAWING NUMBERS: ....... NONE (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

274.0 FT (83.5 M)

274.0 FT (83.5 M)

0 - UNKNOWN

0 - UNKNOWN

6 - N/A

6 - N/A

N - NOT APPLICABLE

(44A) APPR. STR. MATERIAL: ........ 1 - CONCRETE

(44B) APPR. STR. TYPE: ................ 18 - TUNNEL

(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. 5460-009P

GEOMETRY, TRAFFIC, AND NAVIGATIONAL DATA

(16) LATITUDE: ............................. 35°37'01.00"

(17) LONGITUDE: ......................... 83°25'12.40"

(19) DETOUR LENGTH: ............... 80 MI (129 KM)

(28A) LANES ON STRUCT:

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

(42A) SERVICE ON: ..................... 0 - OTHER

(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?: ... 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: ....................... 1.8 FT (0.5 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:

26.1 FT (8.0 M)

29.6 FT (9.0 M)

30.0 FT (9.1 M)

24.0 FT (7.3 M)

3.0 FT (0.9 M)

3.0 FT (0.9 M)

0 - NO MEDIAN

0 °

NO

26.1 FT (8.0 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)

15.75 FT (4.80 M)

15.75 FT (4.80 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

ADDITIONAL INFORMATION

(230) STRUCTURE HISTORY:

2002-TUNNEL LINING AND DRAINAGE SYSTEM REHABILITATED; SIDEWALLS CONSTRUCTED; GRADE OF ROADWAY LOWERED; 2012 -

ROADWAY RESURFACED.

(231) ADDITIONAL CONSIDERATIONS:

(330) ADDITIONAL CONFIG. INFO.:

https://83�25'12.40 https://35�37'01.00

APPENDIX STRUCTURE NO. 5460-009P

PHOTOGRAPHS STRUCTURE NO. 5460-009P

PHOTO #1 - NORTH PORTAL

PHOTO #2 - SOUTH PORTAL

PHOTO #3 - GENERAL UNDERSIDE VIEW OF LINING LOOKING NORTH

PHOTO #4 - GENERAL VIEW OF ROADWAY LOOKING NORTH

PHOTO #5 - DETERIORATION OF APPROACH PAVEMENT ADJACENT TO

GRATE INLET AT WEST SIDE OF SOUTH APPROACH; NOTE DEBRIS

ACCUMULATION

PHOTO #6 - DISPLACED CAPSTONE ON SOUTHWEST GUARDWALL

PHOTO #7 - FALLEN TREE OVERHANGING SOUTH PORTAL

PHOTO #8 - TYPICAL DETERIORATION OF PORTAL MASONRY MORTAR

JOINTS, SOUTH PORTAL SHOWN; NOTE VEGETATION GROWTH FROM

JOINTS

PHOTO #9 - TYPICAL VERTICAL CRACKING WITH EFFLORESCENCE ON

BARRIER WALLS; NOTE TYPICAL CONDITION OF PREVIOUS LINING

REPAIR

PHOTO #10 - SPALLING WITH EXPOSED REBAR ON CROWN NEAR

SOUTH PORTAL

PHOTO #11 - TYPICAL VERTICAL CRACKING WITH EFFLORESCENCE ON

BARRIER WALLS, WEST BARRIER NEAR SOUTH PORTAL SHOWN

PHOTO #12 - VERTICAL CRACKING WITH EFFLORESCENCE AND RUST

STAINING ON EAST LINING NEAR SOUTH PORTAL

PHOTO #13 - TYPICAL VERTICAL CRACKING WITH EFFLORESCENCE

ON LINING, EAST LINING APPROXIMATELY 135' FROM NORTH PORTAL

SHOWN

PHOTO #14 - TYPICAL EVIDENCE OF LEAKAGE FROM DRAIN CHASES,

3RD DRAIN CHASE FROM NORTH PORTAL ON WEST LINING SHOWN

PHOTO #15 - TYPICAL PAINT DETERIORATION ON DRAIN CHASES, 3RD

DRAIN CHASE FROM NORTH PORTAL ON EAST LINING SHOWN

PHOTO #16 - TYPICAL VERTICAL CRACKING WITH EFFLORESCENCE

AND EVIDENCE OF WATER LEAKAGE ON LINING, EAST LINING

APPROXIMATELY 115' FROM NORTH PORTAL SHOWN

PHOTO #17 - TYPICAL LEAKING ON WEST LINING NEAR NORTH PORTAL

PHOTO #18 - SPALLING WITH EXPOSED REBAR ON CROWN NEAR

NORTH PORTAL

PHOTO #19 - TYPICAL DETERIORATION OF PAINT ON TUNNEL LINING,

WEST LINING NEAR NORTH PORTAL SHOWN

PHOTO #20 - TYPICAL CRACKING, EFFLORESCENCE AND LEAKAGE ON

LININGS, EAST LINING NEAR NORTH PORTAL SHOWN

PHOTO #21 - EFFLORESCENCE ON UNDERSIDE OF NORTH PORTAL

RING STONES; NOTE SOUTH PORTAL SIMILAR

PHOTO #22 - SPALLING AND DETERIORATION OF MORTAR JOINTS AT

NORTH PORTAL; NOTE ACTIVE LEAKAGE

PHOTO #23 - VERTICAL CRACKING WITH EFFLORESCENCE ON WEST

LINING NEAR NORTH PORTAL

PHOTO #24 - TYPICAL DETERIORATION OF PORTAL MASONRY MORTAR

JOINTS, NORTH PORTAL SHOWN; NOTE VEGETATION GROWTH FROM

JOINTS

PHOTO #25 - TYPICAL DETERIORATION OF APPROACH GUARDWALL

MASONRY MORTAR JOINTS, NORTHEAST APPROACH GUARDWALL

SHOWN

PHOTO #26 - DISPLACED CAPSTONES DUE TO COLLISION DAMAGE TO

NORTHEAST APPROACH GUARDWALL