Solstice_Canyon_Bridge__1_8540-003P_Redacted.pdf

STRUCTURE SUMMARY STRUCTURE NO. 8540-003P

SOLSTICE CANYON BRIDGE #1 INSPECTION DATE: 6/7/17

BRIDGE IDENTIFICATION AND DESCRIPTION

MAIN SPAN MATERIAL:

MAIN SPAN TYPE:

# OF BEAMS, MAIN SPAN: ..

DECK TYPE:

WEARING SURFACE:

ABUT. FOUNDATIONS:

PIER FOUNDATION(S):

ABUTMENT / PIER MAT'L: ...

PROJ./PLAN REF. NO:

NPS ROAD CLASS:

STRUCTURE HISTORY:

STEEL

STRINGER/MULTI-BEAM or GIRDER

CORRUGATED STEEL

BITUMINOUS

SPREAD FTG ON BEARING MAT'L

N/A

CONCRETE

SAMO 364 / 638/41007C

2 - CONNECTOR ROAD

NO. OF MAIN SPANS:

NO. OF APPR. SPANS:

STRUCT. TOTAL LENGTH: ..

MAX. SPAN LENGTH:

DECK WIDTH:

CURB TO CURB WIDTH:

YEAR BUILT:

YEAR RECONSTRUCTED: ..

SKEW ANGLE:

FRACTURE CRITICAL:

50.8 FT (15.5 M)

50.0 FT (15.2 M)

16.0 FT (4.9 M)

16.0 FT (4.9 M)

N/A

0 °

NO

LOCATION

SANTA MONICA MOUNTAINS NATIONAL RECREATION AREA MILE POINT: ..................... 0.00 (KM PT 0.00)

STATE: ................................. CALIFORNIA LOCATION: CA Route 1 (Pacific Coast Highway) to Corral Canyon Road. Proceed to Solstice Canyon FACILITY CARRIED: ............ SOLSTICE CANYON ROAD

Road; 0.1 miles to bridge.

FEATURE INTERSECTED: .. SOLSTICE CREEK

STRUCTURE EVALUATION SUMMARY

This one-lane bridge was constructed in 2002 and provides access to the Solstice Canyon Visitor Center from Corral Canyon Road. The bridge consists of a prefabricated steel multi-beam superstructure, with a galvanized steel deck and asphalt wearing surface.

The bridge remains in good condition overall, and currently requires only minor corrective measures and preventive maintenance. Recommended work items should be performed as outlined in this report. There have been no significant changes in the structural condition since the previous inspection.

INSPECTION TEAM: J. ANDERSON, D. CHRISTENSEN

CONDITION ASSESSMENT:

JEFFREY ANDERSON, P.E., FIELD TEAM LEADER 720-963-3384

REPORT REVIEW:

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

REPORT APPROVAL: DATE: 11/7/17

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

RECOMMENDATIONS AND ESTIMATED COSTS STRUCTURE NO. 8540-003P

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.

D226 PRIORITY OF IMPROVEMENT

ITEM

NO.

MAINTENANCE RECOMMENDATIONS

(GENERALLY NOT FLHP ELIGIBLE)

QTY. UNIT COST

UNIT

ESTIMATE

COST

PRELIM.

PRELIM. MAINTENANCE TOTAL :

ITEM

NO.

REHABILITATION/RECONSTRUCTION

(TYPICALLY NEEDED WITHIN 5 YEARS)

QTY. UNIT

UNIT

COST ESTIMATES

PRELIM. COST

REHAB. RECONSTR.

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 the recommended actions will be combined with similar work being performed on other structures.

FIELD INSPECTION REPORT STRUCTURE NO. 8540-003P

CONDITION RATING CODES FOR ITEMS 58 - 62, 222, 223

N NOT APPLICABLE

9 EXCELLENT CONDITION

8 VERY GOOD CONDITION - no problems noted.

7 GOOD CONDITION - some minor problems.

6 SATISFACTORY CONDITION - structural elements show some minor deterioration.

5 FAIR CONDITION - all primary structural elements are sound but may have minor section loss, cracking, spalling, or scour.

4 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)

58. DECK 7

1. DECK SLAB G

2. EXPANSION JOINTS F

3. WEARING SURFACE G

4. RIDEABILITY F

5. CURBS, SIDEWALKS, AND MEDIAN N

6. PARAPETS AND/OR RAILINGS G

7. DRAINS AND DRAINAGE G

8. UTILITIES G

9. DEFLECTION AND/OR VIBRATION G

10. OTHER N

59. SUPERSTRUCTURE 7

1. BEARING DEVICES

2. GIRDERS OR BEAMS

3. ARCH(ES) OR SLAB(S)

4. FLOOR BEAMS AND STRINGERS

5. TRUSSES

6. DIAPHRAGMS AND BRACING

7. PAINT

8. FASCIA(E)

9. DEFLECTION AND/OR VIBRATION

10. ALIGNMENT

11. OTHER

60. SUBSTRUCTURE

ABUTMENTS

1. BREASTWALLS OR COLUMNS

2. PILE BENTS

3. CAPS AND/OR BEARING SEATS

4. BACKWALLS AND/OR BULKHEADS

5. FOUNDATIONS

6. WINGWALLS

7. WEEP HOLES

8. EXPANSION JOINTS

9. EROSION AND/OR SCOUR

10. SETTLEMENT OR DEFLECTION

11. SLOPE PROTECTION

12. OTHER

PIER(S)

13. WALLS AND/OR COLUMNS

14. PILE BENTS

15. CAPS AND/OR BEARING SEATS

16. FOUNDATIONS

17. EROSION AND/OR SCOUR

18. SETTLEMENT OR DEFLECTION

19. OTHER

G G N G N G G N G G N

G N G G N G N N G G G N

N N N N N N N

58.1,3,9

58.2

58.4,7

58.6, 222.3, 36.B

58.8

59.2,7

60.1,3

60.4

ITEM REFERENCE AND REMARKS

CORRUGATED STEEL DECK WITH ASPHALT WEARING SURFACE.

POPPING SOUNDS UNDER VEHICLE LOADING, POSSIBLY

EMANATING FROM LONGITUDINAL SEAM DOWN CENTER OF DECK

PANELS (SOUND NOT HEARD DURING 2017 INSPECTION).

SOIL AND DEBRIS ACCUMULATION IN DECK JOINTS. SEE ALSO 60.1.

LARGE CROWN ON BRIDGE TO FACILITATE "OVER THE SIDE" DECK

DRAINAGE; SHALLOWER SLOPE ON DOWNSTREAM SIDE OF DECK

CROWN. UP TO 3" HEIGHT DIFFERENTIAL BETWEEN DECK AND TOP

OF BACKWALL AT NORTH END, UPSTREAM SIDE; 2" AT SOUTH END.

MODERATE HEIGHT DIFFERENTIAL BETWEEN APPROACH RAILING

AND BRIDGE RAILING. APPROACH RAILING IS NOT CONNECTED TO

BRIDGE RAILING. RAIL POSTS ARE SLOTTED AT RAILING

CONNECTIONS, ALLOWING EXPANSION TRAVEL OF RAILS.

MODERATE PAINT PEELING WITH SURFACE CORROSION OF

RAILINGS IN SEVERAL LOCATIONS. MINOR VEHICLE SCRAPES ON

APPROACH RAILING, AND ON BRIDGE RAILING AT NORTHEAST

CORNER.

3 UTILITY LINES IN DOWNSTREAM BAY. WATER LEAKAGE AND

STAINING FROM UTILITY LINES ON SOUTH ABUTMENT

MINOR PAINT FLAKING WITH SURFACE CORROSION OF STEEL

BEAMS ON BOTTOM OF BOTTOM FLANGES IN VARIOUS LOCATIONS.

BOTH BREASTWALLS ARE STAINED DUE TO WATER LEAKAGE THRU

DECK JOINTS.

MINOR SPALLING ALONG TOP FRONT EDGE OF ABUTMENT BEARING

SEATS, LIKELY FROM CONSTRUCTION. DEBRIS ON BEARING SEAT

AT NORTHEAST CORNER.

LONGITUDINAL HAIRLINE CRACKING AT TOP OF BACKWALLS.

MINOR SPALLING OF TOP EDGE FROM WHEEL ACTION, LIKELY DUE

TO LACK OF CHAMFER.

FIELD INSPECTION REPORT STRUCTURE NO. 8540-003P

ITEM REFERENCE AND REMARKS

STREAM BED COMPOSITION : 9.

AVERAGE CLEAR OPENING 8.

NORMAL VELOCITY 7.

ADEQUACY OF OPENING 6.

OTHER 5.

WATERWAY OBSTRUCTIONS 4.

CHANNEL PROTECTION 3.

EROSION AND/OR SCOUR 2.

ALIGNMENT 1.

61. CHANNEL 6

F F G F N

LOW

SUFF

6 FT.

STONES, GRAVEL, GLACIAL TILL

222. APPROACHES 7

OTHER 9.

ALIGNMENT 8.

SIGNS 7.

SETTLEMENT 6.

EROSION 5.

SURFACING 4.

APPROACH GUARDRAIL 3.

RELIEF JOINTS 2.

1. APPROACH SLABS N

N G G G G F F N

223. RETAINING WALL 6

OTHER 6.

SETTLEMENT OR DEFLECTION 5.

EROSION AND/OR SCOUR 4.

FOUNDATION 3.

WEEP HOLES 2.

1. WALL F

N N G G N

36. TRAFFIC AND SAFETY FEATURES

APPROACH GUARDRAIL ENDS D.

APPROACH GUARDRAILS C.

TRANSITIONS B.

BRIDGE RAILINGSA. 1

60.6 MINOR SPALLING IN SOUTHEAST WINGWALL AT ANCHOR BOLT FOR

END POST OF RAILING, SIMILAR SPALLING AT POST FOR

NORTHEAST APPROACH RAILING.

60.11, 61.3 RIPRAP ALONG SIDES AND FACE OF ABUTMENTS. EROSION RIPRAP

ON UPSTREAM SIDE OF NORTH ABUTMENT.

61.1,4 STREAM FLOWS AGAINST RIPRAP AT NORTH ABUTMENT SLOPE.

VEGETATION GROWTH AND SOIL DEPOSITS IN CHANNEL,

UPSTREAM AND DOWNSTREAM FROM BRIDGE.

222.3,7 NO OBJECT MARKERS AT APPROACHES. "YIELD TO BUSES" AND

"ONE LANE BRIDGE" SIGNS IN PLACE. REFLECTIVE TAPE ON ENDS

OF APPROACH RAILINGS. HEAVY VEGETATION GROWTH

OBSCURES END OF RAILING AT EAST SIDE OF SOUTH APPROACH.

222.4,5 SEALED LONGITUDINAL CRACKING OF NORTH APPROACH

PAVEMENT.

222.6 UP TO 2" SETTLEMENT OF PAVEMENT AT WEST SIDE OF SOUTH

APPROACH.

222.8 SHARP CURVES AT BOTH APPROACHES.

223.1 GROUTED STONE MASONRY RETAINING WALL ON NORTH BANK,

UPSTREAM FROM STRUCTURE. MODERATE DETERIORATION OF

MORTAR JOINTS WITH MINOR VEGETATION GROWTH IN JOINTS.

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 LOAD RATING STRUCTURE NO. 8540-003P

TRUCK TYPE

INVENTORY RATING (NORMAL TRAFFIC) OPERATING RATING (MAXIMUM LOAD)

TONS METRIC TONS TONS METRIC TONS

H 30 27 51 46

HS 39 35 65 59

TYPE 3 35 32 59 54

TYPE 3S2 55 50 92 83

TYPE 3-3 67 61 112 102

DESIGN LOADING: UNKNOWN

X CAPACITY MEETS OR EXCEEDS DESIGN LOAD

CAPACITY IS LESS THAN DESIGN LOAD

X ORIGINAL LOAD RATING CALCULATION APPLICABLE

ORIGINAL LOAD RATING CALCULATION REVISED

DATE OF LOAD RATING CALCULATION: 5/16

LOAD RATING CONTROLLED BY: EXTERIOR GIRDER

REMARKS:

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 8540-003P

STRUCTURE IDENTIFICATION

(201) PARK: SANTA MONICA MOUNTAINS NATIONAL RECREATION AREA (1) STATE: ....................................... 069 - CALIFORNIA (CA)

(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:

069 - SAN BENITO

164000000

SOLSTICE CREEK

SOLSTICE CANYON ROAD

8540003P0000000

CA Route 1 (Pacific Coast

99.99 FT (99.99 M)

0.00 (KM PT 0.00)

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:

SOLSTICE CANYON BRIDGE #1

1 - BRIDGE

8540-003P

6 - PACIFIC WEST

003P

2 - CONNECTOR ROAD

NO

PARK

SAMO 364

638/41007C

66 - NATIONAL PARK SERVICE

66 - NATIONAL PARK SERVICE

(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: ..

3 - STEEL

02 - STRINGER/MULTI-BEAM or GIRDER

50.0 FT (15.2 M)

50.8 FT (15.5 M)

2 - SPREAD FTG ON BEARING MAT'L

2 - SPREAD FTG ON BEARING MAT'L

6 - N/A

6 - N/A

6 - CORRUGATED STEEL

(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?: ..................... NO

LOAD RATING AND POSTING

(31) DESIGN LOAD: ................. 0 - UNKNOWN (41) LOAD RESTRICTION: ......... A - OPEN, NO RESTRICTION

(66) INVENTORY RATING: ...... 39.0 TONS (35.4 METRIC TONS) (70) BRIDGE POSTING: .............. 5 - NO POSTING REQUIRED

(64) OPERATING RATING: ...... 65.0 TONS (59.0 METRIC TONS)

INSPECTION DATES

(90) INSPECTION DATE: 6/17 (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. 8540-003P

GEOMETRY, TRAFFIC, AND NAVIGATIONAL DATA

(16) LATITUDE: ............................. 34°02'11.40" (51) CURB TO CURB WIDTH: ........... 16.0 FT (4.9 M)

(17) LONGITUDE: ......................... 118°44'41.70" (52) DECK WIDTH: ............................ 16.0 FT (4.9 M)

(19) DETOUR LENGTH: ............... 199 MI (199 KM) (32) APPR. ROADWAY WIDTH: ........ 16.0 FT (4.9 M)

(28A) LANES ON STRUCT: .......... 01 (213) APPR. PAVEMENT WIDTH: ..... 16.0 FT (4.9 M)

(28B) LANES UNDER STRUCT: ... 00 LEFT SHOULDER: .................. 0.0 FT (0.0 M)

(42A) SERVICE ON: ..................... 1 - HIGHWAY RIGHT SHOULDER: ................ 0.0 FT (0.0 M)

(42B) SERVICE UNDER: .............. 5 - WATERWAY (33) BRIDGE MEDIAN: ....................... 0 - NO MEDIAN

(29) AVG. DAILY TRAFFIC: .......... 50 (34) SKEW ANGLE: ............................ 0 °

(30) YEAR OF ADT: ...................... 2007 (35) DECK FLARE?: ........................... NO

(114) FUTURE ADT: ..................... 60 (47) TOTAL HORIZ. CLEARANCE: .... 16.0 FT (4.9 M)

(115) YEAR OF FUTURE ADT: ..... 2027 (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: ......... 1 - FULL HEIGHT (NO PARAPE

(111) ABUT. OR PIER PROT: ....... 1 - NAV PROTECTION NOT REQUIRED MATERIAL: .............................. 4 - STEEL

DESIGN TYPE: ........................ 1 - CONTINUOUS RAIL

LATERAL UNDERCLEARANCE:

(55) RIGHT: ....................... 0.0 FT (0.0 M) (215) BRIDGE RAIL HEIGHT: ............ 2.50 FT (0.76 M)

(56) LEFT: ......................... 0.0 FT (0.0 M) (53) MIN. VRT. CLEAR. OVER DECK: 99.99 FT (99.99 M)

(54) MIN. VRT. UNDERCLEARANCE: 0.00 FT (0.00 M)

CONDITION AND APPRAISAL DATA, PROPOSED IMPROVEMENTS, AND COST

(58) DECK:

(59) SUPERSTRUCTURE:

(60) SUBSTRUCTURE:

(61) CHANNEL:

(62) CULVERT: ........................... N

(222) APPROACHES:

(223) RETAINING WALL:

(36) TRAFFIC SAFETY FEAT: ... 1011

(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

5 - Stable; scour within limits of

1 - MAINTENANCE

D - MINOR

$11,000

$0

$0

ADDITIONAL INFORMATION

(230) STRUCTURE HISTORY:

(231) ADDITIONAL CONSIDERATIONS:

(330) ADDITIONAL CONFIG. INFO.:

STRINGERS: 33X130; DIAPHRAGMS: 18"X28"; ELASTOMERIC BEARING PADS: 1/2"X8"X12"; GALVANIZED STEEL DECK:4.5"X12X7GA

APPENDIX STRUCTURE NO. 8540-003P

PHOTOGRAPHS STRUCTURE NO. 8540-003P

PHOTO #1 - LOOKING NORTH AWAY FROM PACIFIC COAST HIGHWAY

FLOW

PHOTO #2 - EAST (DOWNSTREAM) SIDE

PHOTO #3 - GENERAL TOPSIDE VIEW LOOKING SOUTH

PHOTO #4 - VERTICAL OFFSET OF BRIDGE DECK AND NORTH

ABUTMENT BACKWALL

PHOTO #5 - VERTICAL OFFSET OF BRIDGE DECK AND SOUTH

ABUTMENT BACKWALL

PHOTO #6 - VERTICAL OFFSET OF SOUTH APPROACH PAVEMENT

ONTO BRIDGE

PHOTO #7 - GENERAL VIEW OF DECK JOINT AT

NORTH END OF BRIDGE; NOTE SOIL AND

DEBRIS ACCUMULATION

PHOTO #8 - SOIL AND DEBRIS ON NEOPRENE

SEAL FOR DECK JOINT AT NORTH END OF

BRIDGE

PHOTO #9 - VEGETATION GROWING BENEATH BRIDGE RAILING AT

SOUTHWEST CORNER

PHOTO #10 - VEHICLE SCRAPES ON BRIDGE RAILING AT NORTHEAST

CORNER

PHOTO #11 - TYPICAL PEELING OF PAINT ON RAILING

PHOTO #12 - GENERAL UNDERSIDE VIEW OF SUPERSTRUCTURE

LOOKING TOWARD SOUTH ABUTMENT; NOTE UTILITY LINES IN EAST

BAY

PHOTO #13 - DEBRIS ON BEARING SEAT AT EAST CORNER OF NORTH

ABUTMENT

PHOTO #14 - TYPICAL BEARING AT NORTH ABUTMENT

PHOTO #15 - WATER STAINS ON NORTH ABUTMENT

PHOTO #16 - WATER STAINS ON SOUTH ABUTMENT

PHOTO #17 - VEGETATION AT EAST SIDE OF SOUTH APPROACH,

OBSCURING END OF RAILING

PHOTO #18 - UPSTREAM CHANNEL

PHOTO #19 - DOWNSTREAM CHANNEL