Bridge_Inspection_Report.pdf

BRIDGE INSPECTION REPORT

VISITOR CENTER BRIDGE

PARKING LOT ROAD OVER BLUE BLAZES CREEK

CATOCTIN MOUNTAIN PARK

LE

STRUCTURE NO. 3220-002P

INSPECTION TYPE: ROUTINE

INSPECTION DATE: 12/15/15

Report prepared by: SD

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

STRUCTURE SUMMARY STRUCTURE NO. 3220-002P

VISITOR CENTER BRIDGE INSPECTION DATE: 12/15/15

BRIDGE IDENTIFICATION AND DESCRIPTION

MAIN SPAN MATERIAL: ....... STEEL NO. OF MAIN SPANS:

MAIN SPAN TYPE: ............... TRUSS - THRU NO. OF APPR. SPANS:

# OF BEAMS, MAIN SPAN: .. N/A STRUCT. TOTAL LENGTH: .. 30.4 FT (9.3 M)

DECK TYPE: ......................... STEEL PLATE (includes orthotropic) MAX. SPAN LENGTH: .......... 30.4 FT (9.3 M)

WEARING SURFACE: .......... OTHER DECK WIDTH: ...................... 11.8 FT (3.6 M)

ABUT. FOUNDATIONS: ........ N/A CURB TO CURB WIDTH: ..... 11.3 FT (3.4 M)

PIER FOUNDATION(S): ........ N/A YEAR BUILT:

ABUTMENT / PIER MAT'L: ... STEEL YEAR RECONSTRUCTED: .. N/A

PROJ./PLAN REF. NO: ......... SKEW ANGLE: ..................... 0 °

NPS ROAD CLASS: .............. 1 - PRINCIPAL PARK ROAD FRACTURE CRITICAL: ........ YES

STRUCTURE HISTORY: ...... 2011-INSTALLED TO SPAN PREVIOUSLY FAILED BRIDGE.

LOCATION

CATOCTIN MOUNTAIN PARK MILE POINT:

STATE: ................................. MARYLAND LOCATION: US-15N, WEST ON MC-77 TO Catoctin

MOUNTAIN PARK, NORTH ON PARK CENTRAL FACILITY CARRIED: ............ PARKING LOT ROAD

ROAD, LEFT INTO BUS PARKING LOT.

FEATURE INTERSECTED: .. BLUE BLAZES CREEK

STRUCTURE EVALUATION SUMMARY

This Bailey-type temporary truss bridge provides vehicle access to a bus and overflow parking area, and is scheduled to be replaced with a permanent structure in the near future under Project PRA-CATO 900(1).

To help ensure motorist safety until the bridge is replaced, it is recommended that delineators be installed at the west side of the north approach.

INSPECTION TEAM: N. JANSEN, G. GOODLIN

CONDITION ASSESSMENT:

NATHANAEL JANSEN, FIELD TEAM LEADER 703-404-6255

REPORT REVIEW:

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

REPORT APPROVAL: DATE: 4/28/16

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

RECOMMENDATIONS AND ESTIMATED COSTS STRUCTURE NO. 3220-002P

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.

D226 PRIORITY OF IMPROVEMENT

ITEM

NO.

MAINTENANCE RECOMMENDATIONS

(GENERALLY NOT FLHP ELIGIBLE)

QTY. UNIT COST

UNIT

ESTIMATE

COST

PRELIM.

222.7 INSTALL DELINEATORS AT NORTH SIDE OF WEST APPROACH TO HELP ENSURE

MOTORIST SAFETY UNTIL BRIDGE IS REPLACED (SEE REMARKS BELOW).

2 EA

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 :

COST ESTIMATE SUMMARY

PRELIM. MAINTENANCE TOTAL:

PRELIM. RECONSTRUCTION TOTAL: ..

TOTAL ITEMIZED COSTS:

PRELIM. REHABILITATION 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: This temporary bridge is scheduled to be replaced with a permanent structure in the near future under Project PRA-CATO 900(1).

FIELD INSPECTION REPORT STRUCTURE NO. 3220-002P

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 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.

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 N

3. WEARING SURFACE N

4. RIDEABILITY G

5. CURBS, SIDEWALKS, AND MEDIAN G

6. PARAPETS AND/OR RAILINGS G

7. DRAINS AND DRAINAGE F

8. UTILITIES G

9. DEFLECTION AND/OR VIBRATION G

10. OTHER N

59. SUPERSTRUCTURE 6

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 (BEARING PADS)

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 N N F G F N N G G N

N N G G N F N N F G N F

N N N N N N N

58.1

58.5

58.6

58.7

59.1, 60.12

59.4

59.5

59.6

60.3

ITEM REFERENCE AND REMARKS

RAISED CORNERS AND MINOR RIPPLING OF STEEL DECK PLATE

EDGES.

BENT CURB ANGLE AT WEST END OF NORTH TRUSS.

TRUSSES SERVE AS BRIDGE RAILING. ORIGINAL TIMBER RAILING

STILL IN PLACE ALONG SOUTH SIDE OF BRIDGE; EAST END OF OLD

RAILING NOW RESTING ON BRIDGE FLOOR BEAM.

DEBRIS (PRIMARILY LEAVES) ALONG CURBS HINDERS DRAINAGE.

BRIDGE BEARINGS REST ON PADS. BEARINGS TYPICALLY OFF

CENTER OF PADS.

SOUTHEAST BEARING PAD RESTS ON A TYPICAL DECK PANEL ON

GRADE; CORNER OF DECK PANEL IS UNDERMINED (SEE 60.9).

MINOR TO MODERATE RUSTING AND MINOR PITTING OF

STRINGERS WITH SLIGHT SECTION LOSS ALONG PANEL SEAMS.

SEVERAL ANCHOR BOLTS NOT FULLY SEATED AT RANDOM

LOCATIONS.

GALVANIZED STEEL TRUSSES ARE IN GOOD CONDITION. MINOR

MISALIGNMENT OF TOP CHORD OF NORTH TRUSS.

MINOR DEBRIS ACCUMULATION IN LOWER PANEL POINTS.

NORTH LATERAL BRACE AT WEST ABUTMENT IS TORN FOR

LENGTH OF 9-1/2".

NORTH CONNECTION BOLT FOR BRACING NOT FULLY SEATED AT

WEST ABUTMENT.

MINOR DEBRIS ACCUMULATION AT BEARING AREAS.

FIELD INSPECTION REPORT STRUCTURE NO. 3220-002P

ITEM REFERENCE AND REMARKS

STREAM BED COMPOSITION :9.

AVERAGE CLEAR OPENING8.

NORMAL VELOCITY7.

ADEQUACY OF OPENING6.

OTHER5.

WATERWAY OBSTRUCTIONS4.

CHANNEL PROTECTION3.

EROSION AND/OR SCOUR2.

ALIGNMENT1.

61. CHANNEL 5

G P N G N

LOW

INSUFF

4 FT.

LACIAL TILL, CONCRETE, BOULDERS, CLA

222. APPROACHES 6

OTHER9.

ALIGNMENT8.

SIGNS7.

SETTLEMENT6.

EROSION5.

SURFACING4.

APPROACH GUARDRAIL3.

2. RELIEF JOINTS

APPROACH SLABS1. N

N N G G F F G N

223. RETAINING WALL 5

OTHER6.

SETTLEMENT OR DEFLECTION5.

EROSION AND/OR SCOUR4.

FOUNDATION3.

WEEP HOLES2.

1. WALL F

N N F F N

36. TRAFFIC AND SAFETY FEATURES

APPROACH GUARDRAIL ENDSD.

APPROACH GUARDRAILSC.

TRANSITIONSB.

BRIDGE RAILINGSA. N

N N N

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.

60.6 JERSEY BARRIERS USED AS WINGWALLS. MODERATE CRACKS

AND SPALLS IN BARRIERS. FULL HEIGHT CRACKS IN NORTH AND

SOUTH BARRIERS AT EAST END.

60.9 MINOR LOSS OF SUPPORT (STABILIZED SOIL) UNDER SOUTHEAST

BEARING PAD AND DECK PANEL.

61.2, 223.4,5 TEMPORARY BRIDGE SPANS ENTIRELY OVER ABUTMENTS OF

ORIGINAL BRIDGE. LARGE SCOUR HOLE AT DOWNSTREAM END OF

ORIGINAL BRIDGE HAS ALLOWED CONCRETE APRON TO BREAK

OFF; DEBRIS IS IN CHANNEL DOWNSTREAM FROM STRUCTURE.

CHANNEL FLOOR IS UNDERMINED UP TO 2-1/2' ACROSS ENTIRE

WIDTH.

SOUTHWEST WINGWALL OF ORIGINAL BRIDGE HAS UP TO 2' OF

UNDERMINING WITH SEVERAL LOWER STONES MISSING. FAILURE

OF SOUTHEAST WINGWALL WITH EXPOSED EMBANKMENT

REMAINS; SLOPE FAILURE AT THIS LOCATION HAS EXPOSED

POSTS FOR ORIGINAL BRIDGE.

TIMBER PLACED ALONG SOUTHEAST APPROACH TO HELP

MAINTAIN FILL. TREE AT SOUTHWEST BANK IS UNDERMINED BY UP

TO 3'.

222.6 UP TO 1" OF SETTLEMENT OF STABILIZED SOIL AT EAST

APPROACH; UP TO 1-1/2" AT WEST APPROACH.

222.7 MINOR COLLISION DAMAGE TO NORTHWEST OBJECT MARKER.

MISSING DELINEATORS AT NORTH SIDE OF WEST APPROACH.

222.8 APPROACH GRADE PRESENTS MINOR TO MODERATE INCLINE.

223.1 OLD MASONRY BRIDGE ABUTMENTS SERVE AS RETAINING WALLS

FOR TEMPORARY STRUCTURE. STONE AND MORTAR IN GOOD

CONDITION. SEE 61.2, 223.4, AND 223.5.

223.5 EAST RETAINING WALL (OLD MASONRY BRIDGE ABUTMENT) HAS

ROTATED TOWARDS CHANNEL. SCREW JACKS IN PLACE TO

PREVENT FURTHER ROTATION.

STRUCTURE LOAD RATING STRUCTURE NO. 3220-002P

TRUCK TYPE

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

TONS METRIC TONS TONS METRIC TONS

H 15 14 25 23

HS 24 21 39 36

TYPE 3 21 19 34 31

TYPE 3S2 30 27 50 45

TYPE 3-3 41 37 68 61

DESIGN LOADING: UNKNOWN (H15 ASSUMED - SEE REMARKS)

X CAPACITY MEETS OR EXCEEDS DESIGN LOAD

CAPACITY IS LESS THAN DESIGN LOAD

ORIGINAL LOAD RATING CALCULATION APPLICABLE

ORIGINAL LOAD RATING CALCULATION REVISED

DATE OF LOAD RATING CALCULATION:

LOAD RATING CONTROLLED BY:

REMARKS: DESIGN LOADING IS UNKNOWN; ASSUMPTION IS BASED ON STRUCTURE TYPE, LOCATION, AGE, AND

CONDITION.

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 3220-002P

STRUCTURE IDENTIFICATION

(201) PARK: CATOCTIN MOUNTAIN PARK (1) STATE: ....................................... 243 - MARYLAND (MD)

(202) STRUCTURE NAME: .......... VISITOR CENTER BRIDGE (2) STATE HWY. AGENCY DIST:

(203) STRUCTURE KIND: ............ 1 - BRIDGE (3) COUNTY CODE: ........................ 021 - FREDERICK

(204) STRUCTURE NUMBER: ..... 3220-002P (4) CITY/PLACE CODE: ................... 40965 - Thurmont

(205) NPS REGION: .................... 2 - NATIONAL CAPITAL (5) INVENTORY ROUTE:

(206) ROUTE CODE NUMBER: ... (6) FEATURES INTERSECTED:....... BLUE BLAZES CREEK

(207) ROAD SECTION NO: .......... 002P (7) FACILITY CARRIED: .................. PARKING LOT ROAD

(208) NPS ROAD CLASS: ............ 1 - PRINCIPAL PARK ROAD (8) STATE STRUCTURE NO: .......... 3220002P0000000

(209) WITHIN NPS BNDRY?: ....... YES (9) LOCATION: ................................ US-15N, WEST ON MC-77 TO

(210) OPERATING UNIT: ............. PARK (10) INV. RTE. - MIN. VERT. CLR: .. 99.99 FT (99.99 M)

(211) PROJECT NO(S): ................ (11) MILE POINT:

(212) DRAWING NUMBERS: ....... (27) YEAR BUILT:

(21) MAINTAINED BY: ................. 66 - NATIONAL PARK SERVICE (106) YEAR RECONSTRUCTED: .... N/A

(22) OWNER: ............................... 02 - COUNTY HIGHWAY AGENCY (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:

3 - STEEL

10 - TRUSS - THRU

30.4 FT (9.3 M)

30.4 FT (9.3 M)

6 - N/A

6 - N/A

6 - N/A

6 - N/A

5 - STEEL PLATE (includes orthotropic)

(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: .. 9 - OTHER

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: ...... 23.6 TONS (21.4 METRIC TONS) (70) BRIDGE POSTING: .............. 5 - NO POSTING REQUIRED

(64) OPERATING RATING: ...... 39.4 TONS (35.7 METRIC TONS)

INSPECTION DATES

(90) INSPECTION DATE: 12/15 (91) FREQ. OF INSP: 24 MONTHS (92 / 93) CRITICAL FEATURE INSPECTION (CFI):

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

INSP. EVERY: 24 MONTHS - LAST INSP. : 12/15 (220) SPECIAL STUDY TYPE:

(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. 3220-002P

GEOMETRY, TRAFFIC, AND NAVIGATIONAL DATA

(16) LATITUDE: ............................. 39°38'03.03" (51) CURB TO CURB WIDTH: ........... 11.3 FT (3.4 M)

(17) LONGITUDE: ......................... 77°27'02.44" (52) DECK WIDTH: ............................ 11.8 FT (3.6 M)

(19) DETOUR LENGTH: ............... 0 MI (0 KM) (32) APPR. ROADWAY WIDTH:

(28A) LANES ON STRUCT: .......... 01 (213) APPR. PAVEMENT WIDTH:

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

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

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

(29) AVG. DAILY TRAFFIC: .......... 20 (34) SKEW ANGLE: ............................ 0 °

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

(114) FUTURE ADT: ..................... 24 (47) TOTAL HORIZ. CLEARANCE: .... 11.1 FT (3.4 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: ....... 1 - NAV PROTECTION NOT REQUIRED MATERIAL:

DESIGN TYPE:

LATERAL UNDERCLEARANCE:

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

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

(54) MIN. VRT. UNDERCLEARANCE:

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: ... 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

5 - Stable; scour within limits of

1 - MAINTENANCE

D - MINOR

ADDITIONAL INFORMATION

(230) STRUCTURE HISTORY:

2011-INSTALLED TO SPAN PREVIOUSLY FAILED BRIDGE.

(231) ADDITIONAL CONSIDERATIONS:

(330) ADDITIONAL CONFIG. INFO.:

http:77�27'02.44 http:39�38'03.03

APPENDIX STRUCTURE NO. 3220-002P

PHOTOGRAPHS STRUCTURE NO. 3220-002P

PHOTO #1 - LOOKING EAST

PHOTO #2 - SOUTH (DOWNSTREAM) SIDE

PHOTO #3 - GENERAL TOP SIDE VIEW OF DECK LOOKING EAST

PHOTO #4 - COLLISION DAMAGE TO WEST END OF NORTH CURB

ANGLE

PHOTO #5 - TYPICAL RIPPLING OF DECK

PLATE EDGES

PHOTO #6 - TYPICAL DEBRIS ALONG CURB

LINE, SOUTH CURB SHOWN

PHOTO #7 - SETTLEMENT AT WEST APPROACH

PHOTO #8 - MISSING APPROACH DELINEATORS AT NORTH SIDE OF

WEST APPROACH

PHOTO #9 - COLLISION DAMAGE TO

NORTHWEST OBJECT MARKER

PHOTO #10 - MISALIGNMENT OF NORTH

TRUSS, LOOKING WEST

PHOTO #11 - GENERAL VIEW OF NORTHEAST BEARING AREA

PHOTO #12 - EROSION AT CORNER OF SOUTHEAST BEARING PAD

PHOTO #13 - GENERAL UNDERVIEW OF STRUCTURE; NOTE RUSTING

OF STRINGERS AND LATERAL BRACING

PHOTO #14 - TYPICAL RUST STAINING ON FLOOR BEAMS

PHOTO #15 - BOLT FOR BRACING NOT FULLY SEATED AT WEST

ABUTMENT FOR NORTH CONNECTION

PHOTO #16 - RUPTURE OF NORTH LATERAL BRACING AT WEST

ABUTMENT

PHOTO #17 - TYPICAL DEBRIS IN LOWER PANEL POINTS

PHOTO #18 - TYPICAL SCREW JACK IN PLACE TO PREVENT FURTHER

ROTATION OF OLD ABUTMENT RETAINING WALL, WEST WALL SHOWN

PHOTO #19 - SLOPE FAILURE AT SOUTHEAST CORNER; NOTE TIMBER

RAIL POST FOR ORIGINAL STRUCTURE COMPLETELY EXPOSED

PHOTO #20 - CLOSE-UP OF SLOPE FAILURE AT SOUTHEAST CORNER

PHOTO #21 - TYPICAL FULL HEIGHT CRACKS IN JERSEY BARRIER

WINGWALLS, NORTHWEST WINGWALL SHOWN

PHOTO #22 - CONCRETE APRON AT DOWNSTREAM END OF ORIGINAL

BRIDGE HAS BROKEN OFF; CONCRETE CHANNEL FLOOR IS

UNDERMINED UP TO 2-1/2'

PHOTO #23 - CONCRETE DEBRIS FROM APRON IS NOW IN CHANNEL

DOWNSTREAM OF STRUCTURE

PHOTO #24 - EROSION OF SOUTHWEST CHANNEL BANK WITH

UNDERMINED TREE

PHOTO #25 - LOOKING UPSTREAM FROM BRIDGE

PHOTO #26 - LOOKING DOWNSTREAM FROM BRIDGE