Bridge_Inspection_Report_2021_Structure_8140-007S_0002.pdf

BRIDGE INSPECTION REPORT

POINT BONITA TRAIL BRIDGE

POINT BONITA TRAIL OVER RAVINE

GOLDEN GATE NATIONAL RECREATION AREA

LN

STRUCTURE NO. 8140-007S

INSPECTION TYPE: ROUTINE

INSPECTION DATE: 8/30/2021

WS

Report prepared by:

Federal Highway Administration Federal Lands Bridge Office Bridge Inspection and Management Program 21400 Ridgetop Circle Sterling, Virginia 20166 https://bridge.flhd.fhwa.dot.gov https://bridge.flhd.fhwa.dot.gov

STRUCTURE SUMMARY STRUCTURE NO. 8140-007S

POINT BONITA TRAIL BRIDGE INSPECTION DATE: 08/30/2021

BRIDGE IDENTIFICATION AND DESCRIPTION

MAIN SPAN MATERIAL:

MAIN SPAN TYPE:

# OF BEAMS, MAIN SPAN: .

DECK TYPE:

WEARING SURFACE:

ABUT. FOUNDATIONS:

PIER FOUDNATION(S):

ABUTMENT / PIER MAT'L: ..

PROJ./PLAN REF. NO:

NPS ROAD CLASS:

STRUCTURE HISTORY:

1 - CONCRETE

04 - TEE BEAM

1 - CONCRETE CAST-IN-PLACE

0 - NONE

5 - OTHER

6 - N/A

1 - CONCRETE

UNKNOWN

6 - RESTRICTED

2006-BRIDGE RAILS REPAINTED.

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:

81.0 FT (24.7 M)

81 FT (24.7 M)

11.3 FT (3.4 M)

10.0 FT (3 M)

0 °

N

LOCATION

GOLDEN GATE NATIONAL RECREATION AREA MILE POINT: .. .00 (KM PT 0)

STATE: .............................. 069 - CALIFORNIA LOCATION: .... Point Bonita Trail. Key required for gate at trailhead.FACILITY CARRIED: ......... POINT BONITA TRAIL

FEATURE INTERSECTED: RAVINE

INSPECTION TEAM: B. Kamrath, S. Marks

CONDITION ASSESSMENT:

Beau Kamrath

REPORT REVIEW:

Marcus Miller

REPORT APPROVAL: Date: 11/02/2021

Jorgomai Ceesay

STRUCTURE EVALUATION SUMMARY

This concrete T-beam bridge is in fair condition overall. The main problems are severe spalling in the west beam, spalling and cracking throughout the abutment diaphragms, and delamination in the superstructure. There was significant erosion and slope failure at the south approach slab and west cribbing. Other problems include several minor spalls and popouts with exposed rebar in the deck overhang, severe paint failure on both railings, and moderate heaving of asphalt approach pavement at junction with north approach slab.

Corrective measures should be taken as outlined in this report to prevent the possible development of more serious or costly problems in the future.

RECOMMENDATIONS AND ESTIMATED COSTS STRUCTURE NO. 8140-007S

POINT BONITA TRAIL BRIDGE INSPECTION DATE : 08/30/2021

226 PRIORITY OF IMPROVEMENT C

A (Critical) - Structure is closed, in immediate damage of collapse, or presents a critical safety danger.

B (Major) - Structure is seriously deficient or presents a safety hazzard, but can remain open 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. Preventive maintenance may be required.

E (Special) - Structure is under construction or reconstruction.

Item No.

Maintenance Recomendations

(GENERALLY NOT FLHP ELIGIBLE)

QTY. UNIT UNIT

COST

PRELIM.

COST

ESTIMATE

58.2

CLEAN AND RESEAL DECK EXPANSION JOINTS TO

PREVENT WATER INTRUSION. 1 LS 3000 3000

223.4

REPLACE BROKEN CONNECTION HARDWARE ON

BOTTOM HORIZONTAL TIMBER MEMBER OF RETAINING

WALL.

1 LS 1000 1000

PRELIM. MAINTENANCE TOTAL : 4000

Item No.

REHABILITATION/RECONSTRUCTION

(TYPICALLY NEEDED WITHIN 5 YEARS)

QTY. UNIT

UNIT

COST

PRELIM. COST ESTIMATES

REHAB RECONSTR

60.9,222.

FILL AND STABILIZE AREAS OF EROSION AT

APPROACH SLABS AND ABUTMENTS WITH

FLOWABLE FILL.

1 LS 100000 100000

58.6,223.

CLEAN AND REPAINT BRIDGE AND APPROACH

RAILINGS; REPLACE CONNECTION HARDWARE

AS NEEDED.

1 LS 45000 45000

59.2 REMOVE UNSOUND CONCRETE FROM TEE

BEAMS, CLEAN REBAR, AND PLACE NEW

CONCRETE TO ORIGINAL DIMENSIONS. REPAIR

SPALL AT MIDSPAN AT EAST BEAM.

1 LS 30000 30000

58.1 REMOVE AREAS OF UNSOUND CONCRETE ON

EAST EDGE OF DECK; CLEAN EXPOSED REBAR

AND COAT WITH APPROVED SEALANT.

1 LS 5000 5000

CONTRACT COST FOR MOBILIZATION, TRAFFIC

CONTROL, DESIGN, AND CONSTRUCTION

ENGINEERING.

1 LS 220000 220000

PRELIM. REHABILITATION/RECONSTRUCTION TOTAL : 400000

RECOMMENDATIONS AND ESTIMATED COSTS STRUCTURE NO. 8140-007S

POINT BONITA TRAIL BRIDGE INSPECTION DATE : 08/30/2021

226 PRIORITY OF IMPROVEMENT C

A (Critical) - Structure is closed, in immediate damage of collapse, or presents a critical safety danger.

B (Major) - Structure is seriously deficient or presents a safety hazzard, but can remain open 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. Preventive maintenance may be required.

E (Special) - Structure is under construction or reconstruction.

COST ESTIMATE SUMMARY

PRELIM. MAINTENANCE TOTAL :

PRELIM. REHABILITATION TOTAL :

PRELIM. RECONSTRUCTION TOTAL : .. 0

404000TOTAL ITEMIZED COSTS:

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 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. 8140-007S

POINT BONITA TRAIL BRIDGE INSPECTION DATE: 08/29/2021

58. DECK

1. DECK SLAB

4. RIDEABILITY

5. CURBS, SIDEWALKS, AND MEDIAN

6. PARAPETS AND/OR RAILINGS

7. DRAINS AND DRAINAGE

8. UTILITIES

9. DEFLECTION AND/OR VIBRATION

10.OTHER:

59. SUPERSTRUCTURE

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

61. CHANNEL

1. ALIGNMENT

2. EROSION AND/OR SCOUR

3. CHANNEL PROTECTION

4. WATERWAY OBSTRUCTIONS

5. OTHER

6. ADEQUACY OF OPENING

7. NORMAL VELOCITY

8. AVERAGE CLEAR OPENING

9. STREAMBED COMPOSITION:

222. APPROACHES

1. APPROACH SLABS

2. RELIEF JOINTS

3. APPROACH GUARDRAIL

4. SURFACING

5. EROSION

6. SETTLEMENT

7. SIGNS

8. ALIGNMENT

9. OTHER

223. RETAINING WALL

1. WALL

2. WEEP HOLES

3. FOUNDATION

4. EROSION AND/OR SCOUR

5. SETTLEMENT OR DEFLECTION

6. OTHER

F

G

G

F

F

G

N

N

F

N

N

N

G

N

N

F

G

N

N

G

N

F

F

P

N

G

N

F

N

N

P

G

G

N

2. EXPANSION JOINTS P

3. WEARING SURFACE N

N FT

CONDITION RATING CODE EQUIVALENTS FOR SUB-ELEMENTS

G = GOOD (CODES 7 - 9) F = FAIR (CODES 5 - 6) P = POOR (CODES 0 - 4)

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

NOT APPLICABLEN

EXCELLENT CONDITION9

VERY GOOD CONDITION - no problems noted.8

GOOD CONDITION - some minor problems.7

SATISFACTORY CONDITION - structural elements show some minor deterioration.6

FA R 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.4

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.

“ MM NENT” FA LURE CONDITION - major deterioration or section loss present in critical structural components or obvious vertical or horizontal movement affecting structure stability.

Structure is closed to

FA LED CONDITION - out of service; beyond corrective action. 0

ABUTMENTS

1. BREASTWALLS OR COLUMNS N

2. PILE BENTS N

3. CAPS AND/OR BEARING SEATS N

4. BACKWALLS AND/OR BULKHEADS N

5. FOUNDATIONS G

6. WINGWALLS N

7. WEEP HOLES N

8. EXPANSION JOINTS N

9. EROSION AND/OR SCOUR F

10.SETTLEMENT OR DEFLECTION G

11.SLOPE PROTECTION N

12.OTHER N

36. TRAFFIC AND SAFETY FEATURES

A. BRIDGE RAILINGS:

B. TRANSITIONS:

C. APPROACH GUARDRAILS:

D. APPROACH GUARDRAIL ENDS:

N

N

N

N

PIER(S) TRAFFIC SAFETY RATING CODES

13. WALLS AND/OR COLUMNS N

N

N

N

N

N

N

0 - Does not meet standards or a safety features is 14.PILE BENTS required and none is provided.

15.CAPS AND/OR BEARING SEATS

1 - Meets currently acceptable standards.

16.FOUNDATIONS

17.EROSION AND/OR SCOUR N - Not applicable or a safety features is not required.

18.SETTLEMENT OR DEFLECTION

19.OTHER

FIELD INSPECTION REPORT STRUCTURE NO. 8140-007S

POINT BONITA TRAIL BRIDGE INSPECTION DATE: 08/29/2021

ITEM REFERENCE AND REMARKS

58.1 MINOR HONEYCOMBING ON WEST FACE OF DECK. SEVERAL MINOR SPALLS AND POPOUTS, UP TO 1'L X 5"H WITH EXPOSED REBAR ALONG EAST EDGE OF OVERHANG. SPALL, 7"W X 4"L X 1/2"D WITH EXPOSED REBAR. 4' LONG MODERATE CRACK ON EAST EDGE OF OVERHANG JUST SOUTH OF MIDSPAN; MINOR DELAMINATION IN VICINITY; RUST STAINING PRESENT.

DELAMINATION, 2'-9"L (PREVIOUSLY 18"), ON EAST EDGE OF DECK BETWEEN POSTS #4 & 5.

58.2 HEAVY SOIL ACCUMULATION IN DECK JOINTS. JOINT FILLER AT BOTH ENDS OF STRUCTURE IS OF INSUFFICIENT SIZE (1/2" GAP) TO COMPLETELY FILL JOINTS; SEVERE DETERIORATION OF FILLER AT SOUTH EXPANSION JOINT.

58.6 TIMBER RAILING SYSTEM WAS REPAINTED IN 2006; SEVERE PAINT FAILURE ON BOTH RAILINGS. MINOR CORROSION ON

CONNECTION HARDWARE. MINOR CHECKING OF RAILS AND POSTS FULL LENGTH OF BRIDGE.

59.1 BEAMS REST DIRECTLY ON DRILLED SHAFTS; GUIDE ANGLES ANCHORED INTO SHAFTS, BUT NOT CONNECTED TO BEAMS.

59.2 CONCRETE TEE BEAM SUPERSTRUCTURE. VERTICAL MINOR CRACK, 1/32"W, ON EXTERIOR FACE OF BOTH TEE BEAM STEMS NEAR MIDSPAN. CRACKS, UP TO 4' LONG AND 30 LF OF DELAMINATION ON INTERIOR FACE OF BOTH TEE BEAMS.

DELAMINATION, 1'L X 1'-5"H WITH CRACK, 1/32"W X 2'L (PREVIOUSLY 8") WITH RUST STAINS, WEST TEE BEAM, SOUTH END AT

BEARING ASSEMBLY.

SEVERE SPALL, 7'L X FULL WIDTH X 4"H ON WEST SIDE X 4"H X EAST SIDE X 3"D WITH EXPOSED REBAR WITH SECTION LOSS, ON UNDERSIDE OF EAST T-BEAM NEAR MIDSPAN. SEVERE SPALL 3'L X 1'H X 2"D WITH EXPOSED REBAR, ON EXTERIOR FACE OF

EAST T-BEAM ABOVE MIDSPAN.

DELAMINATION, 12'L X 1.5'H, AT MIDSPAN.

BOTTOM FACE OF WEST TEE BEAM HAS A MODERATE LONGITUDINAL CRACK (1/16"W X 9'L) WITH RUST STAINING NEAR

MIDSPAN. OUTSIDE FACE OF TEE BEAM HAS A LONGITUDINAL (1/16" WIDE X 4.0' LONG).

TWO MODERATE LONGITUDINAL CRACKS, 1/16"W X 3'L (PREVIOUSLY 1.67') WITH DELAMINATION, 3'L X 5"H X 4" UNDER (PREVIOUSLY 1.5'L X 4"H X 4" UNDER) ON EAST FACE OF WEST TEE BEAM AT NORTH ABUTMENT.

59.6 MINOR VERTICAL CRACKING AND DELAMINATION AT NORTHWEST END OF NORTH ABUTMENT DIAPHRAGM. SPALL, 1'H X 4"W X 1"

DEEP ON NORTHEAST END OF NORTH ABUTMENT DIAPHRAGM.

SPALL, 10"L X 6"H X 1/2"D WITH EXPOSED REBAR, ON WEST FACE OF SOUTH ABUTMENT DIAPHRAGM. DELAMINATION, 1'-8"L X 1'-5"H ON WEST SIDE OF WEST BEAM AT SOUTH ABUTMENT DIAPHRAGM. SPALL, 2'-4"L X 5"H X UP TO 3"D, ON EAST END AT SOUTH ABUTMENT DIAPHRAGM. SPALL, 4"H X 3"L X 1/2"D WITH EXPOSED REBAR, ON EAST END OF SOUTH FACE OF SOUTH

ABUTMENT DIAPHRAGM.

DELAMINATION, FULL WIDTH X 10"H WITH RUST STAINS AND EXPOSED REBAR, ABOVE WEST SHAFT AT SOUTH ABUTMENT

DIAPHRAGM BEHIND BEAM RETENTION ANGLE.

59.9 LIGHT VIBRATION UNDER PEDESTRIAN LOADING, NOT OBSERVED AT TIME OF INSPECTION DUE TO BRIDGE CLOSURE.

60.4 SPILL-THROUGH ABUTMENTS.

60.5 DRILLED SHAFT FOUNDATIONS.

60.9

222.5

APPROACH EMBANKMENT HAS SPILLED THROUGH OPEN ABUTMENTS, UNDERMINING CORNERS OF APPROACH SLABS (SEE

BELOW); APPROACH SLABS ARE FOUNDED ON DRILLED SHAFTS, HOWEVER.

EROSION AND UNDERMINING ALONG SOUTH APPROACH SLAB; 25'L X UP TO 8.7'H X UP TO 10' UNDER, ALONG EAST SIDE. 5.3' HEIGHT OF EAST SHAFT EXPOSED AT SOUTH ABUTMENT (PREVIOUSLY 4.7'); 1.5' HEIGHT OF WEST SHAFT EXPOSED.

EROSION AND UNDERMINING ALONG NORTH APPROACH SLAB; 5.4'L X 1'H X 2.3' UNDER (PREVIOUSLY 3.8'L X 1'H X 1'W X 2.3'

UNDER), ALONG EAST SIDE. UP TO 1.3' HEIGHT OF SHAFTS EXPOSED AT NORTH ABUTMENT.

222.3 MODERATE PAINT FAILURE ON NORTHWEST APPROACH RAIL. MODERATE RUSTING OF CONNECTIVE HARDWARE WITH MINOR

SECTION LOSS.

222.4 MODERATE HEAVING (UP TO 1") OF ASPHALT APPROACH PAVEMENT AT JUNCTION WITH NORTH APPROACH SLAB.

223.1

223.4

TIMBER CRIB RETAINING WALL LOCATED UNDER BRIDGE ON WEST SIDE; SEVERE EROSION AND UNDERMINING AT WALL.

PREVIOUSLY UNACCESSED CRIB PANELS INSPECTED WITH ROPE ACCESS. SEVERAL CRIB PANELS OF RETAINING WALL ARE SEVERELY UNDERMINED AND RETAINED FILL IN 4TH CRIB PANEL (FROM NORTH) HAS FALLEN OUT. BROKEN CONNECTION

HARDWARE ON BOTTOM HORIZONTAL TIMBER BETWEEN 2ND AND 3RD CRIB PANELS.

LARGE SLOPE FAILURE, FULL LENGTH, AT EAST SIDE OF STRUCTURE, SOME ABOVE BOTTOM OF BEAMS. SOIL ANCHORS IN

PLACE UNDER BRIDGE FROM PREVIOUS ATTEMPT TO STABILIZE SLOPES.

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 8140-007S

POINT BONITA TRAIL BR DGE INSPECTION DATE: 08/29/2021

STRUCTURE IDENTIFICATION

(201) PARK: GOLDEN GATE NATIONAL RECREATION AREA

(202) STRUCTURE NAME:..............POINT BONITA TRAIL BRIDGE

(203) STRUCTURE KIND:............... 1 - BRIDGE

(204) STRUCTURE NUMBER:.........8140-007 S

6 - PACIFIC WEST(205) NPS REGION:

(206) ROUTE CODE NUMBER:

(207) ROAD SECTION NO:

(208) NPS ROAD CLASS:............... 6 - RESTRICTED

(209) WITHIN NPS BNDRY?:.......... Yes

(210) OPERATING UNIT:.................PARK

(211) PROJECT NO(S):................... UNKNOWN

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

(21) MAINTAINED BY:......................66 - NATIONAL PARK SERVICE

(22) OWNER:................................... 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) HISTORIC DESIGNATION:

069 - CALIFORNIA

01041 CRENSHAW

00000

1 6 0 00000 0

RAVINE

POINT BONITA TRAIL

8140007S0000000

Point Bonita Trail. Key required for gate at trailhead.

99.99 FT ( 99.99 M)

.00 (KM PT: 0 )

3 - ON FREE ROAD

5 - NOT ELIGIBLE

STRUCTURE DESCRIPTION, FOUNDATION, AND DECK TYPE

(43A) MAIN STR. MATERIAL:..........1 - CONCRETE (44A) APPR. STR. MATERIAL:............ 0 - Other

(43B) MAIN STR. TYPE:.................. 04 - TEE BEAM (44B) APPR. STR. TYPE:.................... 00 - OTHER

(45) NO. OF MAIN SPANS:..............001 (46) NO OF APPROACH SPANS:

(48) MAX. SPAN LENGTH:..............81 FT ( 24.7 M)

(49) STRUCTURE LENGTH:........... 81.0 FT ( 24.7 M) (108) WEAR SURFACE/PROTECT SYSTEM:

(216A) ABUTMENT #1 FDN:........... 5 - OTHER A) TYPE WEARING SURFACE:.. 0 - NONE

(216B) ABUTMENT #2 FDN:........... 5 - OTHER B) TYPE MEMBRANE:................. 0 - NONE

(217A) PREDOM. PIER FDN:.......... 6 - N/A C) TYPE PROTECTION:.............. 0 - NONE

(217B) SECOND. PIER FDN:.......... 6 - N/A (218) IS SALT USED?.......................... NO

(107) DECK TYPE:.......................... 1 - CONCRETE CAST-IN-PLACE

LOAD RATING AND POSTING

(31) DESIGN LOAD:.........................0 - UNKNOWN (41) LOAD RESTRICTION:.................. R - POSTED FOR OTHER LOAD-

CAPACITY RESTRICTION

(66) INVENTORY RATING:.............. TONS ( 0 METRIC TONS) (70) BRIDGE POSTING:...................... 5 - EQUAL TO OR ABOVE LEGAL

LOADS

(64) OPERATING RATING:.............. TONS ( 0 METRIC TONS)

INSPECTION DATES

(90) INSPECTION DATE: 08/30/2021 (91) FREQ. OF INSP: 24 MONTHS (92 / 93) CRITICAL FEATURE INSPECTION (CFI):

(219) ADD. STUDIES NEEDED: N - 0 - NONE (A) FRACTURE CRITICAL:.......... N

(220) SPECIAL STUDY TYPE: 0 - NONE INSP. EVERY MONTHS - LAST INSP:

(221) SPECIAL STUDY DATE: (B) UNDERWATER:..................... N

INSP. EVERY MONTHS - LAST INSP:

(C) SPECIAL INSPECTION:........ N

INSP. EVERY MONTHS - LAST INSP:

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 8140-007S

POINT BONITA TRAIL BR DGE INSPECTION DATE: 08/29/2021

GEOMETRY, TRAFFIC, AND NAVIGATIONAL DATA

(16) LATITUDE:................................ 37° 49'08 90" (51) CURB TO CURB WIDTH:............ 10.0 FT ( 3 M)

(17) LONGITUDE:............................122°31 '49 30" (52) DECK WIDTH:.......................... 11.3 FT ( 3.4 M)

(19) DETOUR LENGTH:.................. 199 MI ( 199 KM) (32) APPR. ROADWAY WIDTH:...... 12.0 FT ( 3.7 M)

(28A) LANES ON STRUCT:.............01 (213) APPR. PAVEMENT WIDTH:... 12.0 FT ( 3.7 M)

(28B) LANES UNDER STRUCT:......00 LEFT SHOULDER:............... 0 0 FT ( 0 M)

(42A) SERVICE ON:.........................3 - PEDESTRIAN-BICYCLE RIGHT SHOULDER:.......... 0 0 FT ( 0 M)

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

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

(30) YEAR OF ADT:......................... 2008 (35) STRUCTURE FLARED:............ 0 - NO FLARE

(114) FUTURE ADT:.........................0 (47) TOTAL HORIZ. CLEARANCE:.. 10 FT ( 3 M)

(115) YEAR OF FUTURE ADT:........2028 (50) SIDEWALKS

(101) PARALLEL STRUCTURE:......N - NO PARALLEL STRUCTURE LEFT:.................................... 0 0 FT ( 0 M)

(38) NAVIGATION CONTROL:.........0 - NO NAVIGATION CONTROL ON RIGHT:.................................. 0 0 FT ( 0 M)

WATERWAY (BRIDGE PERMIT NOT

REQUIRED)

(39) VERTICAL CLEARANCE:.........0 FT ( 0 M) (214) BRIDGE RAIL TYPE

1 - FULL HEIGHT (NO PARAPET)(40) HORIZ. CLEARANCE:..............0 FT ( 0 M) RAIL CONFIGURATION:

(111) ABUT OR PIER PROT:........... MATERIAL:........................... 7 - T MBER

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

(55) RIGHT:...............................00 FT ( 0 M) (215) BRIDGE RAIL HEIGHT:.......... 3.42 FT ( 1 04 M)

(56) LEFT:................................ 0 FT ( 0 M) (53) MIN. VRT. CLR. OVER DECK: 99.99 FT ( 99.99 M)

(54) MIN. VRT. UNDRCLRANCE:... .00 FT ( 0 M)

CONDITION AND APPRAISAL DATA, PROPOSED IMPROVEMENTS, AND COST

(58) DECK:....................................... 6 (67) STRUCTURAL EVALUATION:

(59) SUPERSTRUCTURE:...............5 (68) DECK GEOMETRY:

(60) SUBSTRUCTURE:.......... 6 (69) UNDERCLEARANCES:................ N

(61) CHANNEL:................................N (71) WATERWAY ADEQUACY:........... N

(62) CULVERT:.................................N (72) APPROACH ALIGNMENT:

(222) APPROACHES:...................... 4 (113) SCOUR CRITICAL:.................... N - NOT OVER WATERWAY

(223) RETAINING WALL:.................5 (225) PROPOSE OF IMPROVEMENT: 2 - REHAB/RECONSTRUCTION

(36) TRAFFIC SAFETY FEAT: N N N N (226) PRIORITY OF IMPROVEMENT: C - MODERATE

(75A) TYPE OF WORK:................... (227) MAINTENANCE COST:.............$ 4000

(75B) WORK DONE BY:.................. (228) REHAB / RECNSTR COST:..... $ 400000

(76) IMPROVEMENT LENGTH:....... FT ( 0 M) (229) CONSTRUCTION COST:.......... $ 0

ADDITIONAL INFORMATION

(230) STRUCTURE HISTORY:

2006-BRIDGE RAILS REPAINTED.

(231) ADDITIONAL CONSIDERATIONS:

KEY REQUIRED FOR GATE AT TRAILHEAD.

(330) ADDITIONAL CONFIGURATION INFORMATION:

Inspector: Beau Kamrath Structure Number: 8140007S0000000

Inpsection Date: 08/30/2021 Facility Carried: POINT BONITA TRAIL

Bridge Inspection Report

Pictures

PHOTO 3

Description LOOKING SOUTH TOWARD LIGHTHOUSE

PHOTO 4

Description EAST SIDE

Bridge Inspection Report

Pictures

PHOTO 5

Description GENERAL TOPSIDE VIEW LOOKING NORTH

PHOTO 6

Description GENERAL UNDERSIDE VIEW LOOKING NORTH

Bridge Inspection Report

Pictures

PHOTO 7

Description TYPICAL CONDITION OF RAIL, WEST SIDE SHOWN

PHOTO 8

Description DELAMINATION AND SPALL WITH EXPOSED REINFORCING, IN TOP OF DECK NEAR EAST

CURB 20' FROM SOUTH ABUTMENT

Bridge Inspection Report

Pictures

PHOTO 9

Description DETERIORATION TO SOUTH JOINT WITH DEBRIS IMPACTION ACROSS FULL WIDTH, LOOKING EAST

PHOTO 10

Description TYPICAL PAINT FAILURE AND CHECKING THROUGHOUT RAILS, WEST RAIL SHOWN NEAR

NORTH END

Bridge Inspection Report

Pictures

PHOTO 11

Description GENERAL VIEW OF NORTH ABUTMENT

PHOTO 12

Description AREA OF EROSION AT NORTH ABUTMENT ALONG WEST SIDE

Bridge Inspection Report

Pictures

PHOTO 13

Description AREA OF UNDERMINING ON EAST SIDE OF NORTH ABUTMENT

PHOTO 14

Description SPALL WITH EXPOSED REINFORCING ON UNDERSIDE OF EAST TEE BEAM NEAR

MIDSPAN

Bridge Inspection Report

Pictures

PHOTO 15

Description SPALL AND DELAMINATION ON EXTERIOR SIDE OF EAST TEE BEAM NEAR MIDSPAN

PHOTO 16

Description SPALL AND DELAMINATION WITH EXPOSED REINFORCING ON EXTERIOR FACE OF EAST

TEE BEAM NEAR MIDSPAN

Bridge Inspection Report

Pictures

PHOTO 17

Description TYPICAL MINOR SPALL WITH EXPOSED CORRODED REBAR IN CURBS, EAST CURB NEAR

MIDSPAN SHOWN

PHOTO 18

Description TYPICAL FULL HEIGHT VERTICAL CRACK AT BOTH BEAMS AT MIDSPAN, WEST FACE OF

WEST BEAM SHOWN

Bridge Inspection Report

Pictures

PHOTO 19

Description LONGITUDINAL CRACK NEAR BOTTOM OF WEST FACE OF WEST BEAM NEAR MIDSPAN

PHOTO 20

Description LONGITUDINAL CRACK ON UNDERSIDE OF WEST BEAM NEAR MIDSPAN

Bridge Inspection Report

Pictures

PHOTO 21

Description TYPICAL LONGITUDINAL CRACK ON INTERIOR FACES OF BEAMS, EAST FACE OF WEST

BEAM SHOWN

PHOTO 22

Description GENERAL VIEW OF SOUTH ABUTMENT; NOTE GRAFFITI THROUGHOUT BEAMS AND

ABUTMENTS

Bridge Inspection Report

Pictures

PHOTO 23

Description LOSS OF EMBANKMENT FILL BENEATH SOUTH APPROACH SLAB

PHOTO 24

Description EXPOSED DRILLED SHAFT AT SOUTH ABUTMENT

Bridge Inspection Report

Pictures

PHOTO 25

Description SPALL WITH EXPOSED REINFORCING ON WEST FACE OF SOUTH ABUTMENT

PHOTO 26

Description AREA OF DELAMINATION ON WEST SIDE OF WEST BEAM AT SOUTH ABUTMENT

Bridge Inspection Report

Pictures

PHOTO 27

Description AREA OF DELAMINATION WITH ASSOCIATED LONGITUDINAL CRACKS WITH RUST

STAINING ON WEST SIDE OF WEST BEAM AT SOUTH ABUTMENT

PHOTO 28

Description SPALL AT TOP OF SOUTH FACE OF SOUTH ABUTMENT DIAPHRAGM

Bridge Inspection Report

Pictures

PHOTO 29

Description AREA OF DELAMINATION WITH ASSOCIATED CRACKING AND EXPOSED REINFORCING

BEHIND BEAM RETENTION ANGLE AT SOUTH ABUTMENT, EAST SHAFT

PHOTO 30

Description CRACK ON UNDERSIDE OF EAST TEE BEAM AT SOUTH ABUTMENT

Bridge Inspection Report

Pictures

PHOTO 31

Description EROSION AND FAILED TIE RODS FROM PREVIOUS ATTEMPTS TO STABILIZE

EMBANKMENT BELOW CENTERLINE OF STRUCTURE NEAR MIDSPAN

PHOTO 32

Description EROSION ALONG EAST SIDE OF STRUCTURE NEAR MIDSPAN

Bridge Inspection Report

Pictures

PHOTO 33

Description GENERAL VIEW OF CRIB WALL BELOW WEST SIDE OF STRUCTURE

PHOTO 34

Description GENERAL VIEW OF BOTTOM OF TIMBER CRIBBING LOOKING SOUTHEAST; PREVIOUSLY

UNACCESSED CRIB PANELS INSPECTED WITH ROPE ACCESS.

Bridge Inspection Report

Pictures

PHOTO 35

Description GENERAL VIEW OF BOTTOM OF TIMBER CRIBBING LOOKING NORTHEAST; PREVIOUSLY

UNACCESSED CRIB PANELS INSPECTED WITH ROPE ACCESS.

PHOTO 36

Description CLOSE-UP OF PREVIOUS PHOTO

Bridge Inspection Report

Pictures

PHOTO 37

Description GENERAL VIEW OF BOTTOM OF TIMBER CRIBBING LOOKING EAST; PREVIOUSLY

UNACCESSED CRIB PANELS INSPECTED WITH ROPE ACCESS.

PHOTO 38

Description CLOSE-UP OF PREVIOUS PHOTO

Bridge Inspection Report

Pictures

PHOTO 39

Description GENERAL VIEW OF BOTTOM OF TIMBER CRIBBING LOOKING SOUTH; PREVIOUSLY

UNACCESSED CRIB PANELS INSPECTED WITH ROPE ACCESS.

PHOTO 40

Description GENERAL VIEW OF NORTH APPROACH LOOKING NORTH

Bridge Inspection Report

Pictures

PHOTO 41

Description GENERAL VIEW OF SOUTH APPROACH LOOKING SOUTH

PHOTO 42

Description VIEW FROM BRIDGE LOOKING EAST

Bridge Inspection Report

Pictures

PHOTO 43

Description VIEW FROM BRIDGE LOOKING WEST