Bridge_Inspection_Report_STR_3700-005S.pdf

STRUCTURE SUMMARY STRUCTURE NO. 3700-005S

PYRITE MINE BRIDGE INSPECTION DATE: 3/2/15

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: .. 2 STRUCT. TOTAL LENGTH: .. 53.0 FT (16.2 M)

DECK TYPE: ......................... WOOD OR TIMBER MAX. SPAN LENGTH: .......... 53.0 FT (16.2 M)

WEARING SURFACE: .......... OTHER DECK WIDTH: ...................... 12.0 FT (3.7 M)

ABUT. FOUNDATIONS: ........ UNKNOWN CURB TO CURB WIDTH: ..... 11.3 FT (3.4 M)

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

ABUTMENT / PIER MAT'L: ... MASONRY YEAR RECONSTRUCTED: .. 1995

PROJ./PLAN REF. NO: ......... 10(1) / NONE SKEW ANGLE: ..................... 0 °

NPS ROAD CLASS: .............. 6 - RESTRICTED FRACTURE CRITICAL: ........ YES

STRUCTURE HISTORY: ...... 1995-FLOOR BEAMS, STRINGERS, AND DECK PLANKS REPLACED; TRUSS MEMBER

REPAIRED; STRUCTURAL STEEL PAINTED.

LOCATION

PRINCE WILLIAM FOREST PARK MILE POINT: ..................... 1.10 (KM PT 1.77)

STATE: ................................. VIRGINIA LOCATION: I-95 to Exit 150 (VA Route 619) W. Immed R into Park. L on Scenic Drive. R at fork after Parking FACILITY CARRIED: ............ PYRITE MINE ROAD

Area C. R on Pyrite Mine Road after Parking Area D.

FEATURE INTERSECTED: .. QUANTICO CREEK 1.1 miles to bridge. KEY REQUIRED.

STRUCTURE EVALUATION SUMMARY

This steel "pony" truss bridge is currently closed to vehicle traffic due to severe damage to the north truss sustained in 2006 when a tree fell onto the structure. The damage consists of a bent and cracked outer steel channel and support plate for the upper chord, with lateral and torsional distortion also evident. The bridge is currently posted for "No Motor Vehicles" at the west approach.

The recommendation for closure of the bridge to vehicle traffic was made in a letter from FHW A to the Park Superintendent dated March 21, 2007, and the recommendation remains in effect. After repairs to the damaged top chord are completed, FHW A will reinspect the bridge and reassess the load capacity of the structure.

Other problems with the bridge include two loose and bent diagonal truss bracing members; soil and debris accumulation on the deck surface, between the deck planks, and on the bearing areas; and an undermined tree on the east channel bank upstream of the bridge that could also strike and damage the bridge if it were to fall.

The bracing should be tightened as necessary, the timber curbs raised off of deck and the debris should be removed to prevent premature deterioration of the deck planks and structural steel members due to trapped moisture, and the undermined and fallen trees should be removed.

INSPECTION TEAM: G. GOODLIN, R. SILVESTRY

CONDITION ASSESSMENT:

GARY J. GOODLIN, FIELD TEAM LEADER 703-404-6253

REPORT REVIEW :

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

REPORT APPROVAL: DATE: 7/23/15

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

STRUCTURE SUMMARY STRUCTURE NO. 3700-005S

STRUCTURE EVALUATION SUMMARY CONTINUED

It should also be noted that the channel flows against the east abutment, causing minor to moderate scour with undermining. This situation will likely continue to worsen until the channel is redirected away from the abutment. The channel should be redirected in the near future, and the areas of undermining should be repaired with grout.

Engineered riprap should then be placed along the east abutment and upstream wingwall to help prevent additional scour.

These corrective measures should be taken to help prevent the development of more serious or costly problems in the future.

RECOMMENDATIONS AND ESTIMATED COSTS STRUCTURE NO. 3700-005S

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.

A226 PRIORITY OF IMPROVEMENT

ITEM

NO.

MAINTENANCE RECOMMENDATIONS

(GENERALLY NOT FLHP ELIGIBLE)

QTY. UNIT COST

UNIT

ESTIMATE

COST

PRELIM.

59.5 REPAIR DAMAGE TO TOP CHORD OF NORTH TRUSS. SPLICE IN NEW CHANNEL

MEMBERS OR REPLACE COMPETE CHANNEL MEMBERS. REPLACE TOP BATTEN

PLATE OVER DAMAGE AND LOWER BATTEN TIES AS NEEDED.

1 LS

60.9, 61.1 REDIRECT CHANNEL AWAY FROM EAST ABUTMENT TO ARREST SCOUR. REPAIR

UNDERMINING WITH GROUT, AND PLACE ENGINEERED RIPRAP ALONG EAST

ABUTMENT AND UPSTREAM WINGWALL.

50 CY

58.5,7, 60.3 REMOVE SOIL AND DEBRIS FROM DECK AND BEARING AREAS. RAISE TIMBER

CURB TO INCREASE REVEAL.

1 LS

61.2 REMOVE UNDERMINED TREE ON EAST UPSTREAM CHANNEL BANK AND FALLEN

TREES IN UPSTREAM AND DOWNSTREAM CHANNEL.

1 LS

59.5 TIGHTEN DIAGONAL MEMBER (U3-L2) AT MIDSPAN OF BOTH TRUSSES. 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. REHABILITATION TOTAL:

PRELIM. RECONSTRUCTION TOTAL: ..

TOTAL 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 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. 3700-005S

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

CONDITION RATING CODE EQUIVALENTS FOR SUB-ELEMENTS

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 CODES FOR ITEMS 58 - 62, 222, 223

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.

N

58. DECK

ITEM REFERENCE AND REMARKS

OTHER

ALIGNMENT

DEFLECTION AND/OR VIBRATION

FASCIA(E)

DIAPHRAGMS AND BRACING

TRUSSES

FLOOR BEAMS AND STRINGERS

ARCH(ES) OR SLAB(S)

GIRDERS OR BEAMS

BEARING DEVICES

59. SUPERSTRUCTURE

OTHER

DEFLECTION AND/OR VIBRATION

UTILITIES

DRAINS AND DRAINAGE

PARAPETS AND/OR RAILINGS

CURBS, SIDEWALKS, AND MEDIAN

RIDEABILITY

WEARING SURFACE

EXPANSION JOINTS

DECK SLAB

ABUTMENTS

60. SUBSTRUCTURE

1.

10.

2.

3.

4.

5.

6.

7.

8.

9.

10.

9.

8.

7.

6.

5.

4.

3.

2.

1.

PAINT

11.

G N N G P N G N G

N G

N F G N F N

N

N

G

G

58.1,4 4"X12" (ACTUAL) DECK PLANKS ARE UNEVEN, PRODUCING

SLIGHTLY ROUGH RIDE.

58.5 MINOR CHECKING OF TIMBER CURBS THROUGHOUT. NORTH CURB

IS SLIGHTLY MISALIGNED WITH 1/4" OFFSET NEAR MIDSPAN. SEE

ALSO 58.7.

58.7 MINOR TO MODERATE DEBRIS AND SOIL ACCUMULATION ON DECK

AND BETWEEN DECK PLANKS HINDERS DRAINAGE; SOIL

ACCUMULATION IS PARTICULARLY HEAVY AT EAST END, WITH

MODERATE RUTTING.

TIMBER CURBS TRAP SOIL AND DEBRIS ON DECK.

59.5 TOP CHORD STEEL CHANNEL OF NORTH TRUSS, NEAR U2 (3'-6"

FROM U2-L2 VERTICAL TRUSS MEMBER) IS CRACKED ALONG WITH

SUPPORT PLATE. NOTICEABLE LATERAL AND TORSIONAL

DISTORTION AND TORSION OF THIS PRIMARY STRUCTURE

ELEMENT. CRACK IS 1/16" WIDE AT TOP OF WEB AND INCREASES

TO 3/16" AT BOTTOM OF WEB WITH BOTTOM FLANGE AND

ADJOINING BATTEN PLATE CRACKED THROUGH RIVET HOLE FOR A

WIDTH OF 5/16". MAJORITY OF BATTEN PLATE HAS CRACKS AT A

RIVET HOLE.

UPPER SUPPORT PLATE ADJACENT TO THIS DAMAGE AND U2-L2

VERTICAL MEMBER IS DISTRESSED WITH DEFORMATION OF

BOTTOM FLANGE AND A CRACK AT RIVET CONNECTION MEASURED

AT 1/8" WIDE. DAMAGE WAS CAUSED BY A FALLEN TREE THAT HIT

STRUCTURE IN 2006, AS PER PARK PERSONNEL.

59.5,7 STRUCTURAL STEEL WAS PAINTED IN 1995 AND REPAIRS WERE

MADE TO STEEL TRUSSES AND TO LATERAL BRACING. MINOR TO

MODERATE PITTING OF STEEL TRUSS MEMBERS IS VISIBLE IN

SOME LOCATIONS.

MINOR PACK RUSTING BETWEEN PLATE OF TOP CHORD. LOOSE

AND BENT DIAGONAL COUNTER (U3-L2) FOR BOTH TRUSSES.

BREASTWALLS OR COLUMNS1. F

PILE BENTS2. N

CAPS AND/OR BEARING SEATS3. F

BACKWALLS AND/OR BULKHEADS4. N

FOUNDATIONS5. N

WINGWALLS6. G

WEEP HOLES7. N

EXPANSION JOINTS8. N

EROSION AND/OR SCOUR9. F

SETTLEMENT OR DEFLECTION10. G

SLOPE PROTECTION11. N

OTHER 12. N

PIER(S)

N13. WALLS AND/OR COLUMNS

N14. PILE BENTS

N15. CAPS AND/OR BEARING SEATS

N16. FOUNDATIONS

N17. EROSION AND/OR SCOUR

N18. SETTLEMENT OR DEFLECTION

N19. OTHER

INSPECTION DATE: 3/2/15

STRUCTURE NO. 3700-005S FIELD INSPECTION REPORT

PYRITE MINE BRIDGE

ITEM REFERENCE AND REMARKS

AVERAGE CLEAR OPENING 8.

7. NORMAL VELOCITY

ADEQUACY OF OPENING 6.

5. OTHER

4. WATERWAY OBSTRUCTIONS

CHANNEL PROTECTION3.

EROSION AND/OR SCOUR2.

ALIGNMENT1.

61. CHANNEL 6

F F G G N

MED

SUFF

6 FT.

9. STREAM BED COMPOSITION :

SILT, ROCK, GRAVEL

222. APPROACHES 8

OTHER 9.

ALIGNMENT 8.

SIGNS7.

SETTLEMENT 6.

EROSION5.

SURFACING4.

APPROACH GUARDRAIL 3.

2. RELIEF JOINTS

APPROACH SLABS1. N

N N G G G N G N

223. RETAINING WALL N

OTHER 6.

SETTLEMENT OR DEFLECTION5.

EROSION AND/OR SCOUR4.

FOUNDATION3.

WEEP HOLES2.

1. WALL

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.

60.1 MORTAR CRACKED OR MISSING FROM SOME MASONRY JOINTS.

APPROXIMATELY 1/16" WIDE VERTICAL CRACK IN WEST ABUTMENT

BREASTWALL. SEVERAL CRACKED STONES AT EAST ABUTMENT.

WATER LEVEL GAUGE AND STORAGE BOX AT UPSTREAM SIDE OF

EAST ABUTMENT.

60.3 MODERATE ACCUMULATION OF DEBRIS ON BEARING SEATS. VOID

IN WEST ABUTMENT BEARING SEAT CAP.

60.9 MINOR TO MODERATE SCOUR AT EAST ABUTMENT, UPSTREAM

SIDE; MODERATE AT ADJACENT WINGWALL (10' LONG X 2' WIDE X

1-1/2' DEEP). 9" VOID UNDER ABUTMENT IN ONE LOCATION. SEE

ALSO 61.1.

61.1 CHANNEL HAS SHIFTED AGAINST EAST ABUTMENT. 90 DEGREE

BEND IN CHANNEL UPSTREAM OF STRUCTURE.

61.2 MINOR CHANNEL BANK EROSION; MODERATE ALONG EAST BANK,

UPSTREAM SIDE, WITH A LARGE TREE UNDERMINED. TREE COULD

FALL AND STRIKE STRUCTURE IN SAME MANNER AS OCCURRED IN

2006 (ALSO SEE 59.5 AND 61.4).

61.3 RIPRAP PRESENT AT DOWNSTREAM SIDE OF EAST ABUTMENT.

61.4 LARGE TREE IN UPSTREAM CHANNEL HAS BEEN REMOVED. LARGE

TREE TRUNK LAYING ALONG EAST BANK DOWNSTREAM OF BRIDGE

HAS BEEN REMOVED.

222.7,9 BRIDGE IS CURRENTLY POSTED FOR "NO MOTOR VEHICLES" AT

WEST APPROACH. FIBERGLASS OBJECT POLES IN TRAVEL LANE

HAVE BEEN REMOVED.

STRUCTURE LOAD RATING STRUCTURE NO. 3700-005S

TRUCK TYPE

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

TONS METRIC TONS TONS METRIC TONS

H 8 7 13 12

HS 10 9 16 15

TYPE 3 9 8 15 13

TYPE 3S2 13 12 23 21

TYPE 3-3 17 15 28 25

DESIGN LOADING: UNKNOWN

CAPACITY MEETS OR EXCEEDS DESIGN LOAD

X CAPACITY IS LESS THAN DESIGN LOAD

X ORIGINAL LOAD RATING CALCULATION APPLICABLE

ORIGINAL LOAD RATING CALCULATION REVISED

DATE OF LOAD RATING CALCULATION: 12/79

LOAD RATING CONTROLLED BY: MOMENT CAPACITY OF STRINGERS

REMARKS: BRIDGE IS CURRENTLY CLOSED TO VEHICLE TRAFFIC. RATING IS VALID ONLY IF DAMAGED TOP CHORD

IS REPAIRED AS OUTLINED ON PAGE 3.

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 3700-005S

STRUCTURE IDENTIFICATION

(201) PARK: PRINCE WILLIAM FOREST PARK

(202) STRUCTURE NAME: .......... PYRITE MINE BRIDGE

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

(204) STRUCTURE NUMBER: ..... 3700-005S

(205) NPS REGION: .................... 2 - NATIONAL CAPITAL

(206) ROUTE CODE NUMBER: ... 406

(207) ROAD SECTION NO: .......... 005S

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

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

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

(211) PROJECT NO(S): ................ 10(1)

(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) HISTORICAL DESIGNATION: ..

513 - VIRGINIA (VA)

153 - PRINCE WILLIAM

161004060

QUANTICO CREEK

PYRITE MINE ROAD

3700005S0000000

I-95 to Exit 150 (VA Rout

99.99 FT (99.99 M)

1.10 (KM PT 1.77)

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:

3 - STEEL

10 - TRUSS - THRU

53.0 FT (16.2 M)

53.0 FT (16.2 M)

0 - UNKNOWN

0 - UNKNOWN

6 - N/A

6 - N/A

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: .. 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: ......... K - BRIDGE CLOSED

(66) INVENTORY RATING: ...... 9.6 TONS (8.7 METRIC TONS) (70) BRIDGE POSTING: .............. 0 - POSTING REQUIRED

(64) OPERATING RATING: ...... 16.0 TONS (14.5 METRIC TONS)

INSPECTION DATES

(90) INSPECTION DATE: 3/15 (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. : 3/15 (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. 3700-005S

GEOMETRY, TRAFFIC, AND NAVIGATIONAL DATA

(16) LATITUDE: ............................. 38°34'37.10" (51) CURB TO CURB WIDTH: ........... 11.3 FT (3.4 M)

(17) LONGITUDE: ......................... 77°20 80.50" (52) DECK WIDTH: ............................ 12.0 FT (3.7 M)

(19) DETOUR LENGTH: ............... 10 MI (16 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: ...................... 2007 (35) DECK FLARE?: ........................... NO

(114) FUTURE ADT: ..................... 11 (47) TOTAL HORIZ. CLEARANCE: .... 11.3 FT (3.4 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: ......... 0 - N/A

(111) ABUT. OR PIER PROT: ....... 1 - NAV PROTECTION NOT REQUIRED MATERIAL: .............................. 0 - N/A

DESIGN TYPE: ........................ 0 - N/A

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: ... 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

U - Unknown foundation. Not ye

1 - MAINTENANCE

A - CRITICAL

ADDITIONAL INFORMATION

(230) STRUCTURE HISTORY:

1995-FLOOR BEAMS, STRINGERS, AND DECK PLANKS REPLACED; TRUSS MEMBER REPAIRED; STRUCTURAL STEEL PAINTED.

(231) ADDITIONAL CONSIDERATIONS:

(330) ADDITIONAL CONFIG. INFO.:

APPENDIX STRUCTURE NO. 3700-005S

PHOTOGRAPHS STRUCTURE NO. 3700-005S

FLOW

PHOTO #1 - LOOKING EAST; NOTE FIBERGLASS OBJECT POLES IN

TRAVEL LANE HAVE BEEN REMOVED

PHOTO #2 - NORTH (UPSTREAM) SIDE

PHOTO #3 - GENERAL TOPSIDE VIEW OF STRUCTURE LOOKING EAST

PHOTO #4 - NORTH CURB IS SLIGHTLY MISALIGNED WITH 1/4" OFFSET

NEAR MIDSPAN

PHOTO #5 - CRACK IN TOP CHORD OF NORTH TRUSS, DUE TO TREE

IMPACT

PHOTO #6 - CLOSE UP OF CRACK IN TOP CHORD OF NORTH TRUSS

PHOTO #7 - VIEW OF TREE IMPACT DAMAGE TO NORTH TRUSS TOP

CHORD

PHOTO #8 - LOOSE AND BENT DIAGONAL COUNTER (U3-L2) FOR BOTH

TRUSSES; NORTH TRUSS SHOWN

PHOTO #9 - RUST BLOOMING AT PANEL POINT U2 OF SOUTH TRUSS,

CAUSING COVER PLATE TO BULGE BETWEEN RIVETS

PHOTO #10 - GAP IN FLOOR BEAM TO TRUSS CONNECTION DUE TO

LATERAL AND TORSIONAL DISTORTION

PHOTO #11 - BRIDGE IS CURRENTLY POSTED FOR "NO MOTOR

VEHICLES" AT WEST APPROACH

PHOTO #12 - GENERAL UNDERSIDE VIEW LOOKING WEST

PHOTO #13 - GENERAL VIEW OF EAST ABUTMENT

PHOTO #14 - WATER LEVEL GAUGE AT UPSTREAM SIDE OF EAST

ABUTMENT

PHOTO #15 - VOID IN WEST ABUTMENT

BEARING SEAT CAP

PHOTO #16 - APPROXIMATELY 1/16" WIDE

VERTICAL CRACK IN WEST ABUTMENT

BREASTWALL

PHOTO #17 - DEBRIS ACCUMULATION ON BEARING SEAT AT SOUTH

END OF WEST ABUTMENT

PHOTO #18 - EROSION OF EAST UPSTREAM CHANNEL BANK

PHOTO #19 - VIEW FROM BRIDGE LOOKING UPSTREAM

PHOTO #20 - VIEW FROM BRIDGE LOOKING DOWNSTREAM