Culvert Inspection Report CO FTNP ROMO 407(1).pdf

CULVERT INSPECTION REPORT

HOLZWARTH CULVERT

HOLZWARTH ACCESS ROAD OVER COLORADO RIVER

ROCKY MOUNTAIN NATIONAL PARK

LOOKING WEST

STRUCTURE NO. 1520-029S

INSPECTION TYPE: ROUTINE

INSPECTION DATE: 10/1/2024

SOUTH (DOWNSTREAM) SIDE

Report prepared by:

Federal Highway Administration FLH Office of Bridges and Structures Bridge Inspection Program 22001 Loudoun County Parkway, Building E2, Suite 200 Ashburn, VA 20147 https://bridge.flhd.fhwa.dot.gov https://bridge.flhd.fhwa.dot.gov

STRUCTURE SUMMARY STRUCTURE NO. 1520-029S

HOLZWARTH CULVERT INSPECTION DATE: 10/01/2024

CULVERT IDENTIFICATION AND DESCRIPTION

MAIN SPAN MATERIAL: ..... 3 - STEEL NO. OF BARRELS:

FOUNDATION: .................... 6 - N/A BARREL LENGTH: ............. 12.2 FT (3.72 M)

STRUCT. TOTAL LENGTH: 38.7 FT (11.8 M) SKEW ANGLE: ................... 0 °

MAX. SPAN LENGTH: ........ 6 FT (1.8 M) YEAR BUILT:

PROJ./PLAN REF. NO: ....... YEAR RECONSTRUCTED:

NPS ROAD CLASS: ............ 5 - ADMINISTRATIVE

STRUCTURE HISTORY:

LOCATION

ROCKY MOUNTAIN NATIONAL PARK MILE POINT: .. .00 (KM PT 0)

STATE: ................................ 088 - COLORADO LOCATION: .... West side of park, approximately 1 mile south of Timber Creek Campground.FACILITY CARRIED: .......... HOLZWARTH ACCESS ROAD Beyond locked gate.

FEATURE INTERSECTED: COLORADO RIVER

INSPECTION TEAM: D. Christensen, B. Dietrick, P. Sharifi

CONDITION ASSESSMENT:

Bill Dietrick

REPORT REVIEW:

Marcus Miller

REPORT APPROVAL: Date: 01/30/2025

Jorgomai Ceesay

STRUCTURE EVALUATION SUMMARY

This six-barrel corrugated metal pipe culvert is in poor structural condition. Inspection findings include delaminating, spalling, and cracking of the headwalls; spalling and undermining of concrete at the bottom of both the upstream and downstream divider walls between barrels; severe corroding of the barrel inverts, with rust holes present; missing sections of barrel inverts, and torn and uplifted inverts at the upstream end of the barrels due to high flow impacts and corrosion; widespread barrel distortions resulting from invert section loss;

undermining of barrels at the downstream end; and minor debris accumulation at the upstream divider walls and inside several barrels. In addition, previous inspection teams observed water piping around most of the barrels, particularly during highwater events.

In view of the poor condition of the culvert inverts and the loss of soil support due to undermining, there are concerns about the long-term stability of the structure, particularly during highwater events. A local informed the inspection team that the structure was overtopped in the spring of 2022. The upstream channel has poor alignment and is migrating to the east. Given the high cost of repairs and the evident lack of capacity of the barrels for high flow conditions, it is recommended that the structure be replaced in the near future.

RECOMMENDATIONS AND ESTIMATED COSTS STRUCTURE NO. 1520-029S

HOLZWARTH CULVERT INSPECTION DATE : 10/01/2024

PRIORITY OF IMPROVEMENT226

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 hazard, 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.

B

Item No.

Maintenance Recommendations

(GENERALLY NOT FLHP ELIGIBLE)

QTY. UNIT UNIT

COST

PRELIM.

COST

ESTIMATE

PRELIM. MAINTENANCE TOTAL :

Item No.

REHABILITATION/RECONSTRUCTION

(TYPICALLY NEEDED WITHIN 5 YEARS)

QTY. UNIT

UNIT

COST

PRELIM. COST ESTIMATES

REHAB RECONSTR

62 REPLACE STRUCTURE.

1 LS 500000 500000

PRELIM. REHABILITATION/RECONSTRUCTION TOTAL : 500000

COST ESTIMATE SUMMARY

PRELIM. MAINTENANCE TOTAL :

PRELIM. REHABILITATION TOTAL :

PRELIM. RECONSTRUCTION TOTAL : .. 500000

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 planning purposes only; they should not be used as a complete or final engineers estimate.)

Remarks : Cost estimates are based on historical data, including costs for similar projects when available.

FIELD INSPECTION REPORT STRUCTURE NO. 1520-029S

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

N NOT APPLICABLE 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 9 EXCELLENT CONDITION shear cracks in concrete may be present.

8 VERY GOOD CONDITION - no problems noted. 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

7 GOOD CONDITION - some minor problems. substructure support. Unless closely monitored it may be necessary to close the structure until corrective action can be taken.

6 SATISFACTORY CONDITION - structural elements show some minor deterioration.

1 “IMMINENT” FAILURE CONDITION - major deterioration or section loss present in critical

5 FAIR CONDITION - all primary structural elements are sound but may have minor structural components or obvious vertical or horizontal movement affecting structure stability.

section loss, cracking, spalling, or scour. Structure is closed to

4 POOR CONDITION - advanced section loss, deterioration, spalling, or scour. 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)

61. CHANNEL 4 222. APPROACHES 6

1. ALIGNMENT: P 1. APPROACH SLABS: N

2. EROSION AND/OR SCOUR: F 2. RELIEF JOINTS: N

3. CHANNEL PROTECTION: F 3. APPROACH GUARDRAIL: N

4. WATERWAY OBSTRUCTIONS: F 4. SURFACING: F

5. OTHER: N 5. EROSION: G

6. ADEQUACY OF OPENING: 2 - INSUFF 6. SETTLEMENT: G

7. NORMAL VELOCITY: 2 - MED 7. SIGNS: N

8. AVERAGE CLEAR OPENING: 3 FT 8. ALIGNMENT: G

9. STREAM BED COMPOSITION: 9. OTHER: N

GRAVEL 223. RETAINING WALL N

62. CULVERT 3

1. BARREL(S): P

2. FOOTINGS: N

3. HEADWALLS: P

4. WINGWALLS: P

5. DEBRIS AND/OR SLIT: F

6. EROSION AND/OR SCOUR: F

7. SETTLEMENT AND/OR DEFLECTION: F

8. ADEQUACY OF COVER: G

9. PARAPETS AND/OR RAILINGS: N

10. ROADWAY SURFACE: F

11. RIDEABILITY: G

12. OTHER: FLOW DIVERSION STRUC F

1. WALL:

2. WEEP HOLES:

3. FOUNDATION:

4. EROSION AND/OR SCOUR:

5. SETTLEMENT OR DEFLECTION:

6. OTHER

36. TRAFFIC AND SAFETY FEATURES

A. BRIDGE RAILINGS: N

B. TRANSITIONS: N

C. APPROACH GUARDRAILS: 0

D. APPROACH GUARDRAIL ENDS: 0

TRAFFIC SAFETY RATING CODES

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

1 - Meets currently acceptable standards.

N - Not applicable or a safety features is not required.

(cont'd)FIELD INSPECTION REPORT - CULVERT STRUCTURE NO. 1520-029S

ITEM REFERENCE AND REMARKS

61.1

61.4

UPSTREAM CHANNEL ALIGNMENT DURING HIGH FLOWS IS TOWARD NORTHEAST BANK WITH VISIBLE SIGNS OF CUTTING.

SEDIMENT ACCUMULATION IN CENTER OF UPSTREAM CHANNEL; WATER FLOWS AROUND SEDIMENT AND THROUGH ALL BARRELS. MINIMAL FLOW THROUGH WEST BARREL DUE TO SEDIMENT DEPOSIT AT UPSTREAM END AND THROUGHOUT INVERT N WEST BARREL #6. CURVE IN DOWNSTREAM CHANNEL, APPROXIMATELY 100' FROM STRUCTURE.

61.2 SEE BRIDGE FILE FOR SCOUR EVALUATION.

61.2

61.3

222.5

RIPRAP ALONG NORTHEAST UPSTREAM CHANNEL BANK AND NORTHEAST WINGWALL TO COUNTERACT PAST EROSION;

CONCRETE REPAIRS TO NORTHEAST WINGWALL EMBANKMENT AND ADJACENT ROADWAY EMBANKMENT. CHANNEL BANK EROSION CONTINUES BEYOND LIMITS OF RIPRAP AT EAST UPSTREAM BANK AND ALONG WEST UPSTREAM BANK.

MINOR VERTICAL CUTTING OF EAST DOWNSTREAM CHANNEL BANK.

61.6 PARK PERSONNEL INFORMED 2010 INSPECTION TEAM THAT MEADOW ADJACENT TO STRUCTURE ROUTINELY FLOODS. A LOCAL

INFORMED US THAT THIS STRUCTURE OVERTOPPED IN SPRING OF 2022.

62.1 PERFORATIONS FROM PIN HOLE SIZE TO 2" DIAMETER IS TYPICALLLY FOUND THROUGHOUT INVERTS OF ALL BARRELS.

MISSING LARGE PORTIONS OF INVERT DUE TO CORROSION AT UPSTREAM END OF BARREL #5. TORN CORRUGATIONS AT

UPSTREAM END OF MOST BARRELS WITH SEVERAL ENDS FOLDING IN ON THEMSELVES.

MINOR DISTORTING OF BARREL #3 AT UPSTREAM END.

4' OF CANTILEVER AT DOWNSTREAM END OF EAST BARREL #1. 12" OF PENETRATION AND UNDERMINING BENEATH BARREL #3

AT DOWNSTREAM END AND 2.5' BENEATH BARREL #4 AT DOWNSTREAM.

62.3 SEVERE SPALLING, UP TO 1.4' DEEP AT BOTTOM OF HEADWALLS BETWEEN BARRELS, ESPECIALLY AT DOWNSTREAM END. 3/4" AND 1.5" GAP BETWEEN EAST END OF UPSTREAM HEADWALL AND NORTHEAST WINGWALL. MINOR EROSION AT EAST END OF

BOTH HEADWALLS.

MINOR VERTICAL CRACKING OF HEADWALLS, A FEW WITH EFFLORESCENCE. MINOR GOUGES AND SCRAPES THROUGHOUT UPSTREAM HEADWALL DUE TO HIGHWATER DEBRIS IMPACT. MODERATE SPALLING, UP TO 2-1/2" DEEP ALONG TOP CORNERS OF BOTH HEADWALLS. WIDESPREAD DELAMINATING OF CONCRETE ALONG TOPS OF HEADWALLS. SEVERAL CONCRETE PATCHES IN SOUTH HEADWALL ABOVE BARRELS. WIDE CRACKS AND LARGE SPALL WITH EXPOSED REBAR IN DOWNSTREAM

HEADWALL NEAR BARREL #6.

62.4 TOP 18" OF NORTHWEST WINGWALL BROKEN AND SEPARATED FROM LOWER PORTION BY APPROXIMATELY 4" WITH SEVERAL STONES MISSING. SEPARATION/VERTICAL JOINTS BETWEEN NORTHWEST AND NORTHEAST WINGWALLS AND UPSTREAM HEADWALL; CRACKED AREAS SEALED WITH GROUT. UP TO 12" OF UNDERCUTTING/VOIDS AT NORTHEAST WINGWALL NEAR

HEADWALL.

62.5 MINOR DEBRIS CAUGHT ON A FEW UPSTREAM DIVIDER WALLS AND ON A FEW INVERTS. 8" TO 9" AVERAGE SEDIMENT BUILD UP

ON BARREL #6 INVERT.

62.6 PIPING OF WATER SUSPECTED BENEATH ALL BARRELS. UNDERMINING OF BARREL ENDS, TYPICALLY UP TO 12" BEHIND CORNERS OF BARRELS WITH UP TO 20" AT DOWNSTREAM END OF BARREL #1. EAST BARREL CANTILEVERS OUT 4' FROM DOWNSTREAM HEADWALL AND IS COMPLETELY UNDERMINED AT CANTILEVERED PORTION. 12" TO 2.5' DROP IN CHANNEL

BOTTOM AT OUTLET ENDS OF BARRELS #1 THROUGH #3.

EROSION BEHIND NORTHWEST WINGWALL.

62.12

222.4

STREAM FLOW DIVERSION STRUCTURE AT DOWNSTREAM END OF WEST BARREL #6; 8" HIGH AND 20" OF UNDERMINING BENEATH DIVERSION CONTROL STRUCTURE HEADWALL. 1" WIDE CRACK IN DIVERSION HEADWALL ABOVE BARREL.

36.C

36.D

222.3

NO APPROACH RAIL SYSTEM PRESENT AT STRUCTURE SITE.

STRUCTURE LOAD RATING STRUCTURE NO. 1520-029S

TRUCK TYPE

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

TONS METRIC TONS TONS METRIC TONS

H 16 15 21 19

HS 29 26 38 34

TYPE 3 34 31 42 38

TYPE 3S2 49 44 60 54

TYPE 3-3 57 52 67 61

DESIGN LOADING: 0 - UNKNOWN

CAPACITY MEETS OR EXCEEDS DESIGN LOAD

CAPACITY IS LESS THAN DESIGN LOAD

ORIGINAL LOAD RATING CALCULATION APPLICABLE

X ORIGINAL LOAD RATING CALCULATION REVISED

DATE OF LOAD RATING CALCULATION: 07/27/2016

LOAD RATING CONTROLLED BY: SEAM STRENGTH

REMARKS: SEE STRUCTURE FILE FOR LOAD RATING CALCULATIONS. RATING INCLUDES 50% REDUCTION DUE TO DETERIORATION OF BARRELS.

STRUCTURE INVENTORY AND APPRAISAL STRUCTURE NO. 1520-029S

STRUCTURE IDENTIFICATION

(201) PARK: ROCKY MOUNTAIN NATIONAL PARK

(202) STRUCTURE NAME:..............HOLZWARTH CULVERT

(203) STRUCTURE KIND:............... 2 - CULVERT

(204) STRUCTURE NUMBER:.........1520-029 S

1 - INTERMOUNTAIN(205) NPS REGION:

(206) ROUTE CODE NUMBER:

(207) ROAD SECTION NO:

(208) NPS ROAD CLASS:............... 5 - ADMINISTRATIVE

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

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

(211) PROJECT NO(S):

(212) DRAWING NUMBERS:

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

(22) OWNER:................................... 66 - NATIONAL PARK SERVICE

(1) STATE:............................................ 088 - COLORADO

(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:

08049 GRAND

00000

1 6 8 00000 0

COLORADO RIVER

HOLZWARTH ACCESS ROAD

1520029S0000000

West side of park, approximately 1 mile south of Timber Creek Campground.

Beyond locked gate.

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:..........3 - STEEL (44A) APPR. STR. MATERIAL:............ 0 - Other

(43B) MAIN STR. TYPE:.................. 19 - CULVERT (INCLUDES FRAME (44B) APPR. STR. TYPE:.................... 00 - OTHER

CULVERTS)

(45) NO. OF MAIN SPANS:..............006 (46) NO OF APPROACH SPANS:

(48) MAX. SPAN LENGTH:..............6 FT ( 1.8 M)

(49) STRUCTURE LENGTH:........... 38.7 FT ( 11.8 M) (108) WEAR SURFACE/PROTECT SYSTEM:

(216A) ABUTMENT #1 FDN:........... 6 - N/A A) TYPE WEARING SURFACE:.. N - NA

(216B) ABUTMENT #2 FDN:........... 6 - N/A B) TYPE MEMBRANE:................. N - NA

(217A) PREDOM. PIER FDN:.......... 6 - N/A C) TYPE PROTECTION:.............. N - NA

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

(107) DECK TYPE:.......................... N - NOT APPLICABLE

LOAD RATING AND POSTING

(31) DESIGN LOAD:.........................0 - UNKNOWN (41) LOAD RESTRICTION:.................. A - OPEN

(66) INVENTORY RATING:..............29 METRIC TONS) (70) BRIDGE POSTING:...................... 5 - EQUAL TO OR ABOVE LEGALTONS ( 26.3

LOADS

(64) OPERATING RATING:..............38 TONS ( 34.5 METRIC TONS)

INSPECTION DATES

(90) INSPECTION DATE: 10/01/2024 (91) FREQ. OF INSP: 12 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. 1520-029S

GEOMETRY, TRAFFIC, AND NAVIGATIONAL DATA

(16) LATITUDE:................................ 40° 22'17.76" N (51) CURB TO CURB WIDTH:............ 8.2 FT ( 2.5 M)

(17) LONGITUDE:............................105 51° '32.34" W (52) DECK WIDTH:.......................... 0.0 FT ( 0 M)

(19) DETOUR LENGTH:.................. 99 MI ( 159 KM) (32) APPR. ROADWAY WIDTH:...... 12.0 FT ( 3.7 M)

(28A) LANES ON STRUCT:.............01 (213) APPR. PAVEMENT WIDTH:... 0.0 FT ( 0 M)

(28B) LANES UNDER STRUCT:......00 LEFT SHOULDER:............... 0.0 FT ( 0 M)

(42A) SERVICE ON:.........................1 - HIGHWAY RIGHT SHOULDER:.......... 0.0 FT ( 0 M)

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

(29) AVG DAILY TRAFFIC:..............2 (34) SKEW ANGLE:......................... 0 °

(30) YEAR OF ADT:......................... 2019 (35) STRUCTURE FLARED:............ 0 - NO FLARE

(114) FUTURE ADT:.........................2 (47) TOTAL HORIZ. CLEARANCE:.. 12.2 FT ( 3.7 M)

(115) YEAR OF FUTURE ADT:........2039 (50) CURB OR SIDEWALK WIDTHS:

(101) PARALLEL STRUCTURE:......N - NO PARALLEL STRUCTURE LEFT:.................................... 0.0 FT ( 0 M)

(38) NAVIGATION CONTROL:.........N RIGHT:.................................. 0.0 FT ( 0 M)

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

(40) HORIZ. CLEARANCE:..............0 FT ( 0 M) RAIL CONFIGURATION:...... 0 - N/A

(111) ABUT OR PIER PROT:........... MATERIAL:........................... 0 - N/A

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

(55) RIGHT:...............................00 FT ( 0 M) (215) BRIDGE RAIL HEIGHT:.......... .00 FT ( 0 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:....................................... N

(59) SUPERSTRUCTURE:...............N

(60) SUBSTRUCTURE:.......... N

(61) CHANNEL:

(62) CULVERT:

(222) APPROACHES:

(223) RETAINING WALL:.................N

(36) TRAFFIC SAFETY FEAT: N N 0 0

(75A) TYPE OF WORK:................... 31 - REPLACEMENT - LOAD/GEOMETRY

(75B) WORK DONE BY:.................. 1 - WORK TO BE DONE BY CONTRACT

(76) IMPROVEMENT LENGTH:.......38.7 FT ( 11.8 M)

(67) STRUCTURAL EVALUATION:

(68) DECK GEOMETRY:

(69) UNDERCLEARANCES:................ N

(71) WATERWAY ADEQUACY:

(72) APPROACH ALIGNMENT:

(113) SCOUR CRITICAL:.................... 4 - ACTION IS REQUIRED TO

PROTECT EXPOSED FOUNDATIONS

(225) PURPOSE OF IMPROVEMENT: 3 - CONSTRUCTION

(226) PRIORITY OF IMPROVEMENT: B - MAJOR

(227) MAINTENANCE COST:.............$ 0

(228) REHAB / RECNSTR COST:..... $ 0

(229) CONSTRUCTION COST:.......... $ 500000

ADDITIONAL INFORMATION

(230) STRUCTURE HISTORY:

(231) ADDITIONAL CONSIDERATIONS:

(330) ADDITIONAL CONFIGURATION INFORMATION:

https://LENGTH:

Inspector: Dietrick,Bill Structure Number: 1520029S0000000 Inspection Date: 10/01/2024 Facility Carried: HOLZWARTH ACCESS R

Environment Total Quantity Units Condition

State 1 Condition

State 2 Condition

State 3 Condition

State 4

240-Steel Culvert 1 - Ben. 73 ft. 0 0 0 73

1000-Corrosion 63 0 0 0 63

6000-Scour 10 0 0 0 10

Inspector: Bill Dietrick Structure Number: 1520029S0000000

Inspection Date: 10/01/2024 Facility Carried: HOLZWARTH ACCESS

Culvert Inspection Report

Pictures

PHOTO 3

Description LOOKING EAST TOWARD US ROUTE 34

PHOTO 4

Description NORTH (UPSTREAM) SIDE

Culvert Inspection Report

Pictures

PHOTO 5

Description GENERAL TOPSIDE VIEW LOOKING EAST

PHOTO 6

Description TYPICAL MINOR EROSION AT EAST END OF HEADWALLS - SOUTH HEADWALL SHOWN

Culvert Inspection Report

Pictures

PHOTO 7

Description 3/4" AND 1.5" GAP BETWEEN HEADWALL AND NORTHEAST WINGWALL

PHOTO 8

Description TYPICAL DETERIORATION AND SPALLING ON TOP OF HEADWALLS - NOTE MINOR

VERTICAL CRACKING (SOME WITH EFFLORESCENCE) - DOWNSTREAM HEADWALL

SHOWN

Culvert Inspection Report

Pictures

PHOTO 9

Description UPSTREAM END OF BARREL #1 INVERT IS FOLDED UPWARD 1' HIGH

PHOTO 10

Description GENERAL UNDERSIDE VIEW OF BARREL #1 LOOKING NORTH

Culvert Inspection Report

Pictures

PHOTO 11

Description TYPICAL 1.5" DIAMETER PERFORATIONS IN INVERT OF CORRUGATED METAL PIPE -

BARREL #1 SHOWN

PHOTO 12

Description GENERAL UNDERSIDE OF BARREL #2 LOOKING SOUTH

Culvert Inspection Report

Pictures

PHOTO 13

Description TYPICAL PERFORATIONS IN INVERT - DOWNSTREAM END OF BARREL #2 SHOWN

PHOTO 14

Description GENERAL UNDERSIDE OF BARREL #3 LOOKING SOUTH

Culvert Inspection Report

Pictures

PHOTO 15

Description UPSTREAM END OF BARREL #3 INVERT IS FOLDED UPWARD 1' HIGH

PHOTO 16

Description TYPICAL PERFORATIONS THROUGHOUT INVERT - BARREL #3 SHOWN

Culvert Inspection Report

Pictures

PHOTO 17

Description TYPICAL PERFORATIONS FOUND IN ALL INVERTS NEAR DOWNSTREAM END - BARREL #3

SHOWN

PHOTO 18

Description 1' UNDERMINING AT DOWNSTREAM END OF BARREL #3

Culvert Inspection Report

Pictures

PHOTO 19

Description TYPICAL CONDITION OF SPALLED CONCRETE AT DOWNSTREAM END OF DIVIDER WALL -

DIVIDER WALL #3 SHOWN

PHOTO 20

Description WIDE CRACK IN UPSTREAM END OF DIVIDER WALL #3

Culvert Inspection Report

Pictures

PHOTO 21

Description SEPARATION OF BARREL AND HEADWALL AT UPSTREAM END OF BARREL #4

PHOTO 22

Description GENERAL UNDERSIDE OF BARREL #4 LOOKING SOUTH

Culvert Inspection Report

Pictures

PHOTO 23

Description TYPICAL PERFORATIONS THROUGHOUT INVERT - BARREL #4 SHOWN

PHOTO 24

Description TYPICAL PERFORATIONS IN INVERT NEAR DOWNSTREAM END OF BARREL #4

Culvert Inspection Report

Pictures

PHOTO 25

Description 2.5' UNDERMINING AT OUTLET OF BARREL #4

PHOTO 26

Description SEPARATION OF BARREL AND HEADWALL AT UPSTREAM END OF BARREL #5 - NOTE

DEBRIS

Culvert Inspection Report

Pictures

PHOTO 27

Description UPSTREAM END OF BARREL #5 INVERT IS FOLDED UPWARD PLUS 4 TO 5 SQUARE FEET

OF INVERT IS GONE

PHOTO 28

Description SECTION OF INVERT GONE NEAR UPSTREAM END OF BARREL #5

Culvert Inspection Report

Pictures

PHOTO 29

Description LARGE SECTION OF INVERT GONE 5' FROM UPSTREAM END OF BARREL #5

PHOTO 30

Description GENERAL UNDERSIDE OF BARREL #5 LOOKING SOUTH

Culvert Inspection Report

Pictures

PHOTO 31

Description TYPICAL PERFORATIONS IN INVERT NEAR DOWNSTREAM END OF BARREL #5

PHOTO 32

Description GENERAL UNDERSIDE OF BARREL #6 LOOKING SOUTH - NOTE 8" TO 9" ACCUMULATED

SEDIMENT THROUGHOUT INVERT - CONTROL GATE AT DOWNSTREAM END

Culvert Inspection Report

Pictures

PHOTO 33

Description LARGE PERFORATIONS OF BARREL #6 INVERT WHERE EXPOSED AT UPSTREAM END

PHOTO 34

Description GENERAL VIEW OF CONTROL GATES AT DOWNSTREAM END OF BARREL #6

Culvert Inspection Report

Pictures

PHOTO 35

Description CRAKING AND LARGE SPALL WITH EXPOSED REBAR AT DOWNSTREAM HEADWALL NEAR

BARREL #6

PHOTO 36

Description GENERAL VIEW OF DIVERSION STRUCTURE WITH CONTROL GATES AT DOWNSTREAM

END OF BARREL #6

Culvert Inspection Report

Pictures

PHOTO 37

Description STONES AND GROUT MISSING IN NORTHWEST MASONRY WINGWALL

PHOTO 38

Description VIEW OF STREAM MIGRATION TOWARD NORTHEAST BANK

Culvert Inspection Report

Pictures

PHOTO 39

Description CHANNEL LOOKING UPSTREAM

PHOTO 40

Description CHANNEL LOOKING DOWNSTREAM