Report_Tunnel_Inspection_Buck_Spring_Tunnel.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: 6/26/13

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 http://www.efl.fhwa.dot.gov/FLHBO/BIP

STRUCTURE SUMMARY STRUCTURE NO. 5140-150P

BUCK SPRING TUNNEL INSPECTION DATE: 6/26/13

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 condition overall. The drain chase approximately 280' from the north portal is leaking onto the roadway, which could be hazardous to motorists during freezing weather. The tunnel lining at the drain chases in this section of the tunnel have moderate to severe cracking and spalling with minor to moderate leakage.

Other problems include numerous areas of exposed rebar in the lining and moderate gravel accumulation along the west curbline approximately 420' from the north portal. Since the previous inspection the damaged and missing reflectors along the lining have been replaced. This tunnel is scheduled for rehabilitation under project PRA-BLRI 2T13. The proposed work includes installing several drain chases, replacing the underdrain, and patching holes in 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: P. KUMOR, M. PAGLIARO (GANNETT FLEMING)

CONDITION ASSESSMENT:

PAUL KUMOR, PE, FIELD TEAM LEADER

REPORT REVIEW :

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

REPORT APPROVAL: DATE: 10/31/13

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.

B226 PRIORITY OF IMPROVEMENT

ITEM

NO.

MAINTENANCE RECOMMENDATIONS

(GENERALLY NOT FLHP ELIGIBLE)

QTY. UNIT COST

UNIT

ESTIMATE

COST

PRELIM.

59.1 REPAIR SPALLING WITH EXPOSED REBAR ON CROWN AND LINING OF TUNNEL. 6 SF

222.7 POST CORRECT VERTICAL CLEARANCE SIGNS AT BOTH APPROACHES 2 EA

PRELIM. MAINTENANCE TOTAL :

ITEM

NO.

REHABILITATION/RECONSTRUCTION

(TYPICALLY NEEDED WITHIN 5 YEARS) QTY. UNIT UNIT

COST ESTIMATES

PRELIM. COST

REHAB. RECONSTR.

59.4 REPLACE FAILED DRAIN CHASES. 175 LF

PRELIM. REHABILITATION/RECONSTRUCTION TOTAL :

COST ESTIMATE SUMMARY

PRELIM. MAINTENANCE TOTAL:

PRELIM. REHABILITATION TOTAL:

PRELIM. RECONSTRUCTION TOTAL:

TOTAL ITEMIZED COSTS:

$0

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. 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

F1. LINING

G2. PORTALS

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 105' FROM NORTH PORTAL; SEVERAL

AREAS OF EXPOSED REBAR ON CROWN OF LINING

APPROXIMATELY 300' TO 305' FROM NORTH PORTAL.

NUMEROUS AREAS OF CRACKING WITH EFFLORESCENCE AND

LEAKAGE IN LINING, MAINLY AT DRAIN CHASE AREAS. 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. NUMEROUS DRAIN CHASES LEAKING STARTING AT

280' TO 400' FROM NORTH PORTAL; LEAKAGE VARIES FROM MINOR

TO MODERATE. DRAIN CHASES HAVE MODERATE TO SEVERE

CRACKING AND SPALLING IN THIS AREA. LEAKAGE ONTO

NORTHBOUND LANE (280' FROM NORTH PORTAL) WAS OBSERVED

DURING THIS INSPECTION, WHICH COULD POSE A HAZARD TO

MOTORISTS DURING FREEZING WEATHER. MODERATE GRAVEL

ACCUMULATION ALONG WEST CURBLINE HAS BEEN REMOVED

SINCE PREVIOUS INSPECTION.

59.2 MINOR DETERIORATION OF PORTAL MASONRY MORTAR. MINOR

EFFLORESCENCE ON MASONRY OF BOTH PORTALS. MINOR

VEGETATION GROWTH ON WEST SIDE OF NORTH 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: 6/13 (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

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

(17) LONGITUDE: ......................... 82°44'48.90" (52) DECK WIDTH: ............................ 0.0 FT (0.0 M)

(19) DETOUR LENGTH: ............... 50 MI (80 KM) (32) APPR. ROADWAY WIDTH: ........ 38.0 FT (11.6 M)

(28A) LANES ON STRUCT: .......... 00 (213) APPR. PAVEMENT WIDTH: ..... 22.0 FT (6.7 M)

(28B) LANES UNDER STRUCT: ... 02 LEFT SHOULDER: .................. 8.0 FT (2.4 M)

(42A) SERVICE ON: ..................... 1 - HIGHWAY RIGHT SHOULDER: ................ 8.0 FT (2.4 M)

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

(29) AVG. DAILY TRAFFIC: .......... 5007 (34) SKEW ANGLE: ............................ 0 °

(30) YEAR OF ADT: ...................... 2013 (35) DECK FLARE?: ........................... NO

(114) FUTURE ADT: ..................... 5507 (47) TOTAL HORIZ. CLEARANCE: .... 22.7 FT (6.9 M)

(115) YEAR OF FUTURE ADT: ..... 2033 (50) SIDEWALKS:

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

(38) NAVIGATION CONTROL?: ... 0 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: ....................... 0.0 FT (0.0 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: 13.50 FT (4.11 M)

(54) MIN. VRT. UNDERCLEARANCE: 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

B - MAJOR

$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 UNDERSIDE VIEW OF TUNNEL LINING LOOKING

SOUTH

PHOTO #4 - GENERAL ROADWAY VIEW LOOKING SOUTH

PHOTO #5 - REPAIRED AREA OF WEST

TUNNEL LINING NEAR NORTH PORTAL

PHOTO #6 - PREVIOUSLY REPORTED SOIL

WASHING THROUGH WEST TUNNEL LINING AT

DRAIN NEAR NORTH PORTAL HAS BEEN

REPAIRED

PHOTO #7 - GENERAL VIEW OF PREVIOUS

REPORTED CRACKING AND SPALLING ALONG

WEST DRAIN CHASE, APPROXIMATELY 25'

FROM NORTH PORTAL HAS BEEN REPAIRED

PHOTO #8 - PREVIOUSLY REPORTED

SPALLING AND LEAKAGE ALONG WEST DRAIN

CHASE APPROXIMATELY 25' FROM NORTH

PORTAL HAS BEEN REPAIRED

PHOTO #9 - CRACKING WITH

EFFLORESCENCE ON WEST TUNNEL LINING

APPROXIMATELY 40' FROM NORTH PORTAL

PHOTO #10 - CRACKING WITH

EFFLORESCENCE ON EAST TUNNEL LINING

APPROXIMATELY 50' FROM NORTH PORTAL

PHOTO #11 - SPALLING WITH EXPOSED REBAR ON WEST TUNNEL

LINING APPROXIMATELY 100' FROM NORTH PORTAL

PHOTO #12 - SPALL WITH EXPOSED REBAR ON WEST TUNNEL LINING

APPROXIMATELY 105' FROM NORTH PORTAL

PHOTO #13 - PATCHING OF SPALLED AREA ON WEST TUNNEL LINING

APPROXIMATELY 110' FROM NORTH PORTAL; NOTE CRACKING WITH

EFFLORESCENCE

PHOTO #14 - PREVIOUSLY REPORTED EXPOSED REBAR ON CROWN

OF TUNNEL LINING APPROXIMATELY 150' FROM NORTH PORTAL HAS

BEEN PATCHED

PHOTO #15 - PREVIOUSLY REPORTED DAMAGED REFLECTOR ON

EAST SIDE APPROXIMATELY 150' FROM NORTH PORTAL HAS BEEN

REPAIRED

PHOTO #16 - SPALL WITH EXPOSED REBAR NEAR CROWN OF TUNNEL

LINING APPROXIMATELY 165' FROM NORTH PORTAL

PHOTO #17 - CRACKING WITH EFFLORESCENCE ON WEST TUNNEL

LINING APPROXIMATELY 165' FROM NORTH PORTAL

PHOTO #18 - PREVIOUSLY REPORTED MISSING REFLECTOR ON EAST

SIDE OF TUNNEL LINING APPROXIMATELY 250' FROM NORTH PORTAL

HAS BEEN REPAIRED

PHOTO #19 - LEAKAGE FROM PREVIOUSLY

REPAIRED DRAIN CHASE ON WEST SIDE

APPROXIMATELY 255' FROM NORTH PORTAL

PHOTO #20 - PREVIOUSLY REPORTED

EXPOSED REBAR NEAR CROWN OF TUNNEL

LINING APPROXIMATELY 255' FROM NORTH

PORTAL HAS BEEN PATCHED; NOTE LEAKAGE

PHOTO #21 - LEAKAGE AT DRAIN CHASE ON EAST SIDE

APPROXIMATELY 280' FROM NORTH PORTAL

PHOTO #22 - REPLACED REFLECTIVE MARKER ON EAST SIDE

APPROXIMATELY 280' FROM NORTH PORTAL

PHOTO #23 - LEAKAGE ON NORTHBOUND

LANE APPROXIMATELY 280' FROM NORTH

PORTAL

PHOTO #24 - LEAKAGE AT EAST DRAIN CHASE

APPROXIMATELY 280' FROM NORTH PORTAL

PHOTO #25 - GENERAL VIEW LOOKING ALONG EAST TUNNEL LINING;

NOTE PREVIOUSLY REPORTED MARKERS HAVE BEEN REPLACED

PHOTO #26 - TWO AREAS OF EXPOSED REBAR IN CROWN OF LINING

APPROXIMATELY 300' FROM NORTH PORTAL

PHOTO #27 - EXPOSED REBAR IN CROWN OF TUNNEL LINING

APPROXIMATELY 300' FROM NORTH PORTAL

PHOTO #28 - HORIZONTAL CRACK WITH EFFLORESCENCE ON EAST

TUNNEL LINING APPROXIMATELY 300' FROM NORTH PORTAL

PHOTO #29 - LEAKAGE ALONG DRAIN CHASE

APPROXIMATELY 300' FROM NORTH PORTAL

ON WEST SIDE; NOTE INSTALLED DRAIN

PHOTO #30 - EXPOSED REBAR ON CROWN OF

TUNNEL LINING APPROXIMATELY 305' FROM

NORTH PORTAL

PHOTO #31 - GENERAL VIEW OF SPALLING ON

EAST TUNNEL LINING APPROXIMATELY 310'

FROM NORTH PORTAL ON EAST SIDE; NOTE

LEAKAGE

PHOTO #32 - CAP IN DRAIN CHASE NEAR

CROWN OF TUNNEL LINING APPROXIMATELY

320' FROM NORTH PORTAL

PHOTO #33 - LEAKING DRAIN CHASE ON EAST

SIDE APPROXIMATELY 350' FROM NORTH

PORTAL

PHOTO #34 - PREVIOUSLY REPORTED

LEAKAGE ON EAST DRAIN CHASE

APPROXIMATELY 380' FROM NORTH PORTAL

PHOTO #35 - LEAKING DRAIN CHASE ON EAST

SIDE APPROXIMATELY 380' FROM NORTH

PORTAL

PHOTO #36 - PREVIOUSLY REPORTED

EXPOSED REBAR APPROXIMATELY 365' FROM

NORTH PORTAL ON EAST TUNNEL LINING HAS

BEEN REPAIRED; NOTE LEAKAGE

PHOTO #37 - LEAKING DRAIN CHASE ON WEST

SIDE APPROXIMATELY 368' FROM NORTH

PORTAL

PHOTO #38 - PREVIOUSLY REPORTED

SPALLING AND LEAKAGE IN DRAIN CHASE ON

EAST SIDE APPROXIMATELY 370' FROM

NORTH PORTAL HAS BEEN REPAIRED

PHOTO #39 - CRACKING WITH

EFFLORESCENCE ON PATCH ON WEST

TUNNEL LINING APPROXIMATELY 400' FROM

NORTH PORTAL; NOTE LEAKAGE

PHOTO #40 - PREVIOUSLY REPORTED

LEAKAGE FROM DRAIN CHASE ON EAST SIDE

APPROXIMATELY 415' FROM NORTH PORTAL

PHOTO #41 - PREVIOUSLY REPORTED

SPALLING AND LEAKAGE ALONG EAST DRAIN

CHASE APPROXIMATELY 450' FROM NORTH

PORTAL HAS BEEN REPAIRED

PHOTO #42 - GENERAL VIEW OF REFLECTIVE

OBJECT MARKERS ON EAST SIDE

APPROXIMATELY 450' FROM NORTH PORTAL

PHOTO #43 - PREVIOUSLY REPORTED

GRAVEL ACCUMULATION ALONG WEST

CURBLINE STARTING APPROXIMATELY 420'

FROM NORTH PORTAL AND EXTENDING

NORTH FOR APPROXIMATELY 30' HAS BEEN

CLEARED

PHOTO #44 - PATCHING ALONG EAST TUNNEL

LINING APPROXIMATELY 450' FROM NORTH

PORTAL

PHOTO #45 - REPLACED REFLECTIVE OBJECT MARKERS

APPROXIMATELY 460' FROM NORTH PORTAL ON EAST SIDE

PHOTO #46 - VERTICAL CLEARANCE SIGN AT NORTH APPROACH

PHOTO #47 - VERTICAL CLEARANCE SIGN AT SOUTH APPROACH