Bridge_Inspection_Report_STR_6640-005P_Alley_Spring.pdf

STRUCTURE NO. 6640 005P

ALLEY SPRING BRIDGE INSPECTION DATE: 5/11/16

STRUCTURE SUMMARY

BRIDGE IDENTIFICATION AND DESCRIPTION

MAIN SPAN MATERIAL: ....... NO. OF MAIN SPANS: .......... STEEL 2

MAIN SPAN TYPE: ............... NO. OF APPR. SPANS: ........ STRINGER/MULTI-BEAM or GIRDER 0

# OF BEAMS, MAIN SPAN: .. 5 STRUCT. TOTAL LENGTH: .. 91.0 FT (27.7 M)

DECK TYPE: ......................... MAX. SPAN LENGTH: .......... 50.0 FT (15.2 M) WOOD OR TIMBER

WEARING SURFACE: .......... DECK WIDTH: ...................... 15.5 FT (4.7 M) WOOD OR TIMBER

ABUT. FOUNDATIONS: ........ SPREAD FTG ON BEARING MAT'L CURB TO CURB WIDTH: ..... 11.5 FT (3.5 M)

PIER FOUNDATION(S): ........ SPREAD FTG ON BEARING MAT'L YEAR BUILT:

ABUTMENT / PIER MAT'L: ... CONCRETE YEAR RECONSTRUCTED: .. 1983

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

NPS ROAD CLASS:

66447603503 / 3242

FRACTURE CRITICAL: ........ NO

STRUCTURE HISTORY: ...... 2006-TIMBER DECK, RUNNERS, RAILS, AND PORTIONS OF WEST BACKWALL REPLACED.

2010- TIMBER DECK, RUNNERS, AND RAILINGS PAINTED.

4 - PRIMITIVE

LOCATION

OZARK NATIONAL SCENIC RIVERWAYS MILE POINT: ..................... 0.02 (KM PT 0.03)

STA MISSOURI LOCA TO ALLEY ARKING TE: ................................. TION: ADJACENT SPRING P

LOT.

FACILITY CARRIED: ............ SERVICE ROAD

FEATURE INTERSECTED: .. ALLEY SPRING BRANCH

STRUCTURE EVALUATION SUMMARY

This steel multi-beam bridge is in generally fair condition. The main problems include widespread paint deterioration and moderate rusting throughout the structural steel, and checking and decay of the timber elements. The steel should be cleaned and painted to prevent additional rusting and any subsequent loss of section; the deteriorated timber throughout should be replaced. In addition, there is moderate scour at the pier, with up to 1'-9" (previously 3'-8") of the protective concrete collar exposed, and several rocks have dislodged from the west abutment slope protection. Engineered riprap should be installed to counteract the scour at the pier, and to reinforce the slope protection at the west abutment.

Since the previous inspection the bridge rails and posts have severely deteriorated, with widespread decay and rot throughout the posts, with up to 6" of disintegration at the tops of the posts. The serviceability of the rails may be compromised if continued deterioration occurs. There is also a 2' long section of failed timber deck plank at the west end of the bridge creating a hole where gravel spills through to below. Corrective measures should be taken to fix this hole in the deck and the severely rotted bridge rail posts. Additional minor problems should also be corrected as outlined in this report to prevent the possible development of more serious or costly problems in the future.

In view of the low calculated load capacity and high cost of rehabilitation, consideration should be given to replacing this structure.

The load posting signs have been corrected from 21 Tons to 13 Tons since the previous inspection.

INSPECTION TEAM: N. SASS, A. KELLY (SHORT ELLIOTT HENDRICKSON INC.)

CONDITION ASSESSMENT:

NINA L. SASS, P.E., FIELD TEAM LEADER

REPORT REVIEW:

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

REPORT APPROVAL: DATE: 9/30/16

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

RECOMMENDATIONS AND ESTIMATED COSTS STRUCTURE NO. 6640 005P

226 PRIORITY OF IMPROVEMENT C

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.

ITEM

NO.

MAINTENANCE RECOMMENDATIONS

(GENERALLY NOT FLHP ELIGIBLE)

QTY. UNIT COST

UNIT

ESTIMATE

COST

PRELIM.

58.1,3,6, 59.8

REPLACE SPLIT AND DECAYED RAIL POSTS, DECAYED RAILINGS, DECAYED

FASCIA LOGS, DECK PLANKS, AND DETERIORATED RUNNING PLANKS AS

NEEDED.

1 LS $20,000 $20,000

59.1 REPLACE MISSING ANCHOR BOLTS FOR EAST ABUTMENT BEARINGS. 3 EA $1,000 $3,000

60.11, 61.3 REPAIR STACKED ROCK SLOPE PROTECTION AT WEST ABUTMENT AND ALONG

UPSTREAM CHANNEL BANK.

3 CY $1,000 $3,000

58.7, 60.3 REMOVE DEBRIS FROM BEARING SEATS, BOTTOM FLANGES OF GIRDERS, AND

BETWEEN GIRDER BRACING.

1 LS $1,500 $1,500

222.7 INSTALL TYPE 3 OBJECT MARKERS AT CORNERS OF BRIDGE. 1 LS $1,000 $1,000

PRELIM. MAINTENANCE TOTAL : $28,500

ITEM

REHABILITATION/RECONSTRUCTION

QTY. UNIT

UNIT

COST ESTIMATES

PRELIM. COST

NO (TYPICALLY NEEDED WITHIN 5 YEARS)

REHAB. RECONSTR.

59.1,2,6,7 CLEAN AND PAINT STRUCTURAL STEEL. 2,100 SF $50 $100,000 $0

60.17 PLACE ENGINEERED RIPRAP ALONG PIER FOOTING COLLAR TO

COUNTERACT SCOUR, AND ALONG WEST ABUTMENT SLOPE.

1 LS $10,000 $10,000 $0

CONTRACT COSTS FOR MOBILIZATION, TRAFFIC CONTROL, AND

DESIGN AND CONSTRUCTION ENGINEERING (APPROXIMATELY 70%

OF TOTAL REHAB COST) PLUS PARK LOCATION FACTOR.

1 LS $80,000 $80,000 $0

PRELIM. REHABILITATION/RECONSTRUCTION TOTAL : $190,000 $0

PRELIMINARY ESTIMATE TOTAL* : ........................................... $218,500

(*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.

In view of the low calculated load capacity and high cost of rehabilitation, consideration should be given to replacing this structure.

FIELD INSPECTION REPORT STRUCTURE NO. 6640 005P

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)

58. DECK 5

DECK SLAB1. F

EXPANSION JOINTS2. N

WEARING SURFACE3. P

RIDEABILITY4. F

CURBS, SIDEWALKS, AND MEDIAN 5. N

PARAPETS AND/OR RAILINGS6. P

DRAINS AND DRAINAGE7. F

UTILITIES8. N

DEFLECTION AND/OR VIBRATION9. F

OTHER10. N

59. SUPERSTRUCTURE 6

BEARING DEVICES1. P

GIRDERS OR BEAMS2. F

ARCH(ES) OR SLAB(S)3. N

FLOOR BEAMS AND STRINGERS4. N

TRUSSES5. N

DIAPHRAGMS AND BRACING6. F

7. PAINT P

FASCIA(E)8. F

DEFLECTION AND/OR VIBRATION9. F

ALIGNMENT10. G

OTHER11. N

60. SUBSTRUCTURE 6

ITEM REFERENCE AND REMARKS

ABUTMENTS

58.1 WIDESPREAD MINOR TO MODERATE CHECKING OF 3"X8" TIMBER

DECK PLANKS. SPOT DECAY OF 3"X8" TIMBER NAILERS. MINOR TO

MODERATE DECAY AND DAMPNESS ON UNDERSIDE OF TIMBER

DECK PLANKS. 2' SECTION OF FAILED TIMBER DECK PLANK AT

WEST END OF BRIDGE CREATING A HOLE THROUGH THE DECK.

58.3 MINOR TO MODERATE SPLINTERING OF 2"X12" RUNNING PLANKS IN

SEVERAL LOCATIONS. 7' LONG EDGE FRACTURE ON SOUTH EDGE

OF SOUTH RUNNING PLANK AT WEST END; MODERATE DECAY AT

BOTTOM PORTION OF PLANK. 2' LONG EDGE FRACTURE AND

SPLINTERING ON SOUTH PLANK OF NORTH RUNNING PLANKS AT

MIDSPAN OF WEST SPAN. 7' LONG EDGE FRACTURE AND

SPLINTERING OF SOUTH PLANK OF NORTH RUNNING PLANKS AT

EAST END OF WEST SPAN. SEVERAL ADDITIONAL MINOR SPLITS

AND FRACTURES ALONG EDGES OF RUNNING PLANKS.

58.6 UP TO 2" WIDE SPLIT IN TOP OF EAST END POST, AT BOTH

RAILINGS; SPLIT EXTENDS DOWN PAST TOP RAIL BOLT. SPLITS UP

TO 5/8" WIDE IN SEVERAL OTHER RAIL POSTS. RAILINGS HAVE

BEEN PAINTED PRIOR TO 2014 INSPECTION. DECAY OF TIMBER

RAILINGS AT SPOTS. SEVERE ROT OF 3RD POST FROM EAST ON

NORTH RAILING WITH TOP 6" COMPLETELY DISINTEGRATED AND

CORE ROT THROUGHOUT REMAINDER OF POST. TOP RAIL OF

SOUTH RAIL BETWEEN POSTS #4 AND #5 HAS BEEN REPLACED

SINCE PREVIOUS INSPECTION. SEVERE ROT IN BOTTOM RAIL OF

SOUTH RAILING BETWEEN POSTS #3 AND #4, #5 AND #6, AND #8

AND #9. HEAVY CORE ROT IN NUMEROUS POSTS ON BOTH

RAILINGS.

58.7 MINOR GRAVEL MIGRATION ONTO BOTH ENDS OF DECK.

59.1 SEVERE DETERIORATION OF BEARING PADS AT PIER (THIN PAD

BETWEEN UNDERSIDE OF BEAM AND BEARING PLATE). MISSING

ANCHOR BOLTS AT EAST ABUTMENT FOR BEARINGS #3, #4, AND #5.

11.

1 0.

9.

8.

7.

6.

5.

4.

3.

2.

1.

12. OTHER

SLOPE PROTECTION

SETTLEMENT OR DEFLECTION

EROSION AND/OR SCOUR

EXPANSION JOINTS

WEEP HOLES

WINGWALLS

FOUNDATIONS

BACKWALLS AND/OR BULKHEADS

CAPS AND/OR BEARING SEATS

PILE BENTS

BREASTWALLS OR COLUMNS

(BURIED)

G

N

F

F

N

G

N

N

G

G

F

N

PIER(S)

G 13. WALLS AND/OR COLUMNS

N 14. PILE BENTS

G 15. CAPS AND/OR BEARING SEATS

G 16. FOUNDATIONS

F 17. EROSION AND/OR SCOUR

G 18. SETTLEMENT OR DEFLECTION

N 19. OTHER

AND REMARKSITEM REFERENCE

61. CHANNEL 6

F 1. ALIGNMENT

G2. EROSION AND/OR SCOUR

F 3. CHANNEL PROTECTION

G 4. WATERWAY OBSTRUCTIONS

N 5. OTHER

SUFF ADEQUACY OF OPENING 6.

7. MEDNORMAL VELOCITY

6 FT. 8. AVERAGE CLEAR OPENING

9. STREAM BED COMPOSITION :

ROCK, SILT

222. APPROACHES 6

OTHER 9.

ALIGNMENT 8.

SIGNS7.

SETTLEMENT6.

EROSION5.

SURFACING4.

APPROACH GUARDRAIL 3.

RELIEF JOINTS 2.

APPROACH SLABS 1. N

N

N

F

G

G

G

F

N

223. RETAINING WALL N

OTHER6.

SETTLEMENT OR DEFLECTION5.

EROSION AND/OR SCOUR 4.

FOUNDATION 3.

WEEP HOLES2.

WALL1.

36. TRAFFIC AND SAFETY FEATURES

APPROACH GUARDRAIL ENDSD.

APPROACH GUARDRAILSC.

TRANSITIONSB.

BRIDGE RAILINGSA. 0

N

N

N

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.

59.2,6,7 WIDESPREAD MODERATE TO SEVERE DETERIORATION OF PAINT

AND MODERATE SURFACE RUSTING THROUGHOUT STRUCTURAL

STEEL. MINOR ACCUMULATION OF SOIL AND DEBRIS ON TOP OF

BOTTOM FLANGE PROMOTES ACCELERATED RUSTING OF STEEL.

MINOR FLOOD DEBRIS CAUGHT IN BRACING.

BEAM ENDS BUTT TOGETHER AT PIER. MINOR DENTS IN BOTTOM

FLANGES OF BEAMS, LIKELY DUE TO FLOOD DEBRIS. BRACING

MEMBERS ARE GENERALLY WELDED, BUT ARE BOLTED AND

WELDED TO BEAM FLANGES AT MIDSPAN.

59.8 LOG FASCIA BOLTED TO EXTERIOR BEAMS. SEVERE DECAY AT

ENDS OF FASCIA LOGS; MINOR TO MODERATE SPOT DECAY

ELSEWHERE.

60.1 FORM TIES REMAIN IN PLACE AT EAST ABUTMENT BREASTWALL.

60.3 HEAVY ACCUMULATION OF DEBRIS ON ABUTMENT BEARING SEATS

COVERING BEAM ENDS AND BEARINGS.

60.6 MODERATE TO HEAVY VEGETATION GROWTH ALONG WINGWALLS.

60.11, 61.3 STACKED ROCK SLOPE PROTECTION AT WEST ABUTMENT AND

ALONG UPSTREAM CHANNEL BANK. SEVERAL ROCKS MISSING;

SEVERAL SMALL TREES GROWING FROM SLOPE PROTECTION.

60.16 MINOR SPALLING AT TOP OF EXPOSED CONCRETE COLLAR AT PIER

(SCOUR COUNTERMEASURE).

60.17 MODERATE SCOUR AROUND PIER WITH UP TO 1'-9" OF PROTECTIVE

CONCRETE COLLAR EXPOSED, FULL PERIMETER (PREVIOUSLY

EXPOSED UP TO 3'-8").

61.1 CHANNEL TURNS SHARPLY (REVERSE "S" CURVE) IMMEDIATELY

UPSTREAM OF STRUCTURE; MAIN FLOW AGAINST WEST

ABUTMENT.

222.4 WEST APPROACH PAVEMENT STOPS 24" SHORT OF DECK; MINOR

MAP CRACKING OF PAVEMENT. GRAVEL ON EAST APPROACH, NO

PAVEMENT; "POTHOLES" IN GRAVEL JUST EAST OF BRIDGE IN

WHEEL LINES.

222.7 "WEIGHT LIMIT 13 TONS" AND "LOCAL TRAFFIC ONLY" SIGNS AT

WEST APPROACH, SOUTH SIDE AND "WEIGHT LIMIT 13 TONS" AT

EAST APPROACH, NORTH SIDE. NO OBJECT MARKERS PRESENT AT

BRIDGE CORNERS.

222.8 TEE INTERSECTION AT WEST APPROACH. CURVE AT EAST

APPROACH.

ADDITIONAL ITEM REFERENCE AND REMARKS

36.A BRIDGE RAILINGS DO NOT MEET CURRENT SAFETY STANDARDS FOR VEHICULAR BARRIERS.

36.B,C,D NO APPROACH RAILING SYSTEM.

STRUCTURE NO. 6640 005P

INSPECTION DATE: 5/11/16

TRUCK TYPE

TONS

INVENTORY RATING (NORMAL TRAFFIC)

METRIC TONS METRIC TONSTONS

OPERATING RATING (MAXIMUM LOAD)

H

HS

TYPE 3

TYPE 3S2

TYPE 3-3

DESIGN LOADING:

DATE OF LOAD RATING CALCULATION:

LOAD RATING CONTROLLED BY:

REMARKS:

CAPACITY MEETS OR EXCEEDS DESIGN LOAD

CAPACITY IS LESS THAN DESIGN LOAD

ORIGINAL LOAD RATING CALCULATION APPLICABLE

ORIGINAL LOAD RATING CALCULATION REVISED

MOMENT CAPACITY OF BEAMS

9/16

STRUCTURE IS POSTED FOR 13 TONS.

X

X

STRUCTURE LOAD RATING

ALLEY SPRING BRIDGE

UNKNOWN

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 6640 005P

STRUCTURE IDENTIFICATION

(201) PARK: OZARK NATIONAL SCENIC RIVERWAYS (1) STATE: ....................................... 297 - MISSOURI (MO)

(202) STRUCTURE NAME: .......... ALLEY SPRING BRIDGE (2) STATE HWY. AGENCY DIST:

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

(4) CITY/PLACE CODE: ................... (204) STRUCTURE NUMBER: ..... 6640-005P

(205) NPS REGION: .................... 5 - MIDWEST (5) INVENTORY ROUTE:

(206) ROUTE CODE NUMBER: ... 161 (6) FEATURES INTERSECTED:....... ALLEY SPRING BRANCH

(207) ROAD SECTION NO: ..........005P (7) FACILITY CARRIED: .................. SERVICE ROAD

(208) NPS ROAD CLASS: ............ 4 - PRIMITIVE (8) STATE STRUCTURE NO: .......... 6640005P0000000

(209) WITHIN NPS BNDRY?: ....... YES (9) LOCATION: ................................ ADJACENT TO ALLEY SPRING

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

(211) PROJECT NO(S): ................ 66447603503 (11) MILE POINT: ............................. 0.02 (KM PT 0.03)

(212) DRAWING NUMBERS: ....... 3242 (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:

3 - STEEL

02 - STRINGER/MULTI-BEAM or GIRDER

50.0 FT (15.2 M)

91.0 FT (27.7 M)

2 - SPREAD FTG ON BEARING MAT'L

2 - SPREAD FTG ON BEARING MAT'L

2 - SPREAD FTG ON BEARING MAT'L

2 - SPREAD FTG ON BEARING MAT'L

8 - WOOD OR TIMBER

(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: .. 7 - WOOD OR TIMBER

B) TYPE MEMBRANE: ................. 0 - NONE

C) TYPE PROTECTION: .............. 0 - NONE

NO(218) IS SALT USED?:

LOAD RATING AND POSTING

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

(66) INVENTORY RATING: ...... 10.0 TONS (9.0 METRIC TONS) (70) BRIDGE POSTING: .............. 0 - POSTING REQUIRED

(64) OPERATING RATING: ...... 17.0 TONS (15.0 METRIC TONS)

INSPECTION DATES

(90) INSPECTION DATE: 5/16 (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. 6640 005P

GEOMETRY, TRAFFIC, AND NAVIGATIONAL DATA

(16) LATITUDE: ............................. 37°09'02.60" (51) CURB TO CURB WIDTH: ........... 11.5 FT (3.5 M)

(17) LONGITUDE: ......................... 91°26'28.70" (52) DECK WIDTH: ............................ 15.5 FT (4.7 M)

(19) DETOUR LENGTH: ............... 0 MI (0 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 (0.0 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: .......... 10 (34) SKEW ANGLE: ............................ 0 °

(30) YEAR OF ADT: ...................... 2008 (35) DECK FLARE?: ........................... NO

(114) FUTURE ADT: ..................... 12 (47) TOTAL HORIZ. CLEARANCE: .... 11.5 FT (3.5 M)

(115) YEAR OF FUTURE ADT: ..... 2028 (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: ....... MATERIAL: .............................. 7 - TIMBER

DESIGN TYPE: ........................ 3 - SIMPLE RAIL (joints at each

LATERAL UNDERCLEARANCE:

(55) RIGHT: ....................... 0.0 FT (0.0 M) (215) BRIDGE RAIL HEIGHT: ............ 3.00 FT (0.91 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: ........... N

(36) TRAFFIC SAFETY FEAT: ... 0NNN

(75A) TYPE OF WORK: ..............35 - GENERAL REHAB

(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

4 - Stable; action required to pro

2 - REHAB/RECONSTRUCTION

C - MODERATE

$28,500

$190,000

$0

ADDITIONAL INFORMATION

(230) STRUCTURE HISTORY:

2006-TIMBER DECK, RUNNERS, RAILS, AND PORTIONS OF WEST BACKWALL REPLACED. 2010- TIMBER DECK, RUNNERS, AND

RAILINGS PAINTED.

(231) ADDITIONAL CONSIDERATIONS:

(330) ADDITIONAL CONFIG. INFO.:

APPENDIX STRUCTURE NO. 6640 005P

PHOTOGRAPHS STRUCTURE NO. 6640 005P

FLOW

PHOTO #1 - LOOKING EAST AWAY FROM PARKING AREA; NOTE 13

TONS WEIGHT LIMIT SIGN

PHOTO #2 - NORTH (UPSTREAM) SIDE

PHOTO #3 - LOOKING WEST TOWARD PARKING AREA; NOTE 13 TONS

WEIGHT LIMIT SIGN

PHOTO #4 - GENERAL TOPSIDE VIEW LOOKING EAST

STRUCTURE NO. 6640 005PPHOTOGRAPHS

PHOTO #5 - TYPICAL CHECKING, SPLITTING, AND DETERIORATION OF

TIMBER DECK PLANKS; WEST END OF DECK SHOWN; NOTE ALSO

VEGETATION GROWTH AND ACCUMULATION OF DEBRIS ON DECK

PHOTO #6 - SPLINTERING AND DECAYING OF TIMBER RUNNING

PLANKS AT WEST END OF SOUTH RUNNING PLANKS

PHOTO #7 - GRAVEL MIGRATION ONTO WEST END OF DECK FROM

UNPAVED APPROACH

PHOTO #8 - DECAYED DECK PLANK AT WEST END OF DECK CREATING

A HOLE ALLOWING GRAVEL TO SPILL THROUGH TO BELOW

PHOTO #9 - DECAY OF NORTH RUNNING PLANKS OVER SPAN #1

PHOTO #10 - PREVIOUSLY DETERIORATED TOP SOUTH BRIDGE RAIL

BETWEEN POSTS #4 AND #5 HAS BEEN REPLACED

PHOTO #11 - DETERIORATED BOTTOM SOUTH BRIDGE RAIL BETWEEN

POSTS #3 AND #4

PHOTO #12 - ADVANCED DECAY IN RAILING POSTS, NORTH RAILING

POST #4 FROM WEST SHOWN, POST #6 IN SIMILAR CONDITION

PHOTO #13 - TYPICAL SPLIT AND DECAYED CONDITION OF END

RAILING POSTS, POST AT EAST END OF SOUTH RAILING SHOWN

PHOTO #14 - DECAYED RAIL POST WITH SECTION LOSS AT WEST END

OF NORTH RAILING

PHOTO #15 - DECAY AT BOTTOM OF SOUTH RAILING POST OVER EAST

ABUTMENT

PHOTO #16 - "POTHOLING" OF GRAVEL IN WHEEL LINES OF EAST

APPROACH

PHOTO #17 - UNDERSIDE VIEW OF WEST SPAN LOOKING WEST

PHOTO #18 - UNDERSIDE VIEW OF EAST SPAN LOOKING EAST

PHOTO #19 - TYPICAL DECAY OF FASCIA LOGS, EAST END OF NORTH

FASCIA IN SPAN #1 SHOWN

PHOTO #20 - TYPICAL DETERIORATION OF PAINT AND SURFACE

RUSTING THROUGHOUT STRUCTURAL STEEL, SOUTH FACE OF BEAM

#3 IN WEST SPAN SHOWN

PHOTO #21 - CLOSE UP VIEW OF PAINT PEELING AND CORROSION

THROUGHOUT BEAMS; BEAM #2 IN WEST SPAN SHOWN

PHOTO #22 - TYPICAL DETERIORATION OF PAINT AND CORROSION

WITH PITTING ON BOTTOM FLANGES, NORTH EXTERIOR BEAM IN

WEST SPAN SHOWN

PHOTO #23 - TYPICAL RUSTING OF BEARING PLATES AT PIER, NORTH

SIDE OF BEAM #2 SHOWN

PHOTO #24 - TYPICAL ACCUMULATION OF DEBRIS AT BEARING SEATS,

BEARING SEAT IN BAY #4 AT EAST ABUTMENT SHOWN

PHOTO #25 - GENERAL VIEW OF EAST ABUTMENT; NOTE TYPICAL

FORM TIES LEFT IN PLACE

PHOTO #26 - GENERAL VIEW OF WEST ABUTMENT WITH STACKED

ROCK SLOPE PROTECTION; NOTE DISPLACED ROCKS ALONG WATER

LEVEL

PHOTO #27 - GENERAL VIEW OF PIER, WEST FACE

PHOTO #28 - EXPOSED PROTECTIVE COLLAR FOR PIER; NOTE

SPALLING ALONG EDGES AND SCOUR AT UPSTREAM SIDE

PHOTO #29 - LOOKING UPSTREAM FROM BRIDGE

PHOTO #30 - LOOKING DOWNSTREAM FROM BRIDGE