2016 underwater bridge inspection report - … · equipment - ultrasonic portable flaw detector...

2016 UNDERWATERBRIDGE INSPECTION REPORT

BRIDGE #

DISTRICT: COUNTY: CITY/TOWNSHIP:

Date of Inspection:Equipment Used:

Inspected By:

Report Written By:Report Reviewed By:Final Report Date:

7132CSAH 33 over LAC QUI PARLE RIVER

District 8 Lac qui ParleCounty

LAC QUI PARLE

06/18/2016Full Body Harness, UB-30, Non-destructive TestingEquipment - Ultrasonic portable flaw detector (OlympusEpoch 600), 5 Mhz 1/2" diameter normal beam transducer

Forsyth, Roy

Roy Forsyth

County Highway AgencyOwner:

MinnesotaSTATE:

UNDERWATER SUMMARY 3

UNDERWATER INSPECTION 4

UNDERWATER INSPECTION PROCEDURES 6

APPENDIX A: STRUCTURE INVENTORY 7

ELEMENTS 8

PICTURES 12

BRIDGE 7132 UNDERWATER INSPECTION DRAWINGS 2016 15

TABLE OF CONTENTS

PAGE NUMBER

Contractor:

(A) Reinspect the submerged substructure units at the normal maximum recommended (NBIS) interval of sixty (60) months.

Collins Engineers

9687Contractor Job Number:

RECOMMENDATIONS

REPORT SUMMARY

UNDERWATER INSPECTION

The substructure units inspected at Bridge No. 7132 consisted of Piers 1 and 2. The concrete columns of the substructure units were found to be in satisfactory condition with scaling up to 1/4 inch deep. The channel bottom material around the substructure units consisted of silty sand and appeared to be stable with no significant scour at the time of inspection.

(A) The upstream and downstream columns of Piers 1 and 2 exhibited scaling up to 1/4 inch deep from 2 feet above to 1 foot below the waterline.(B) The streambed material at Piers 1 and 2 consisted of silty sand with up to 6 inches of probe rod penetration.(C) An accumulation of 1 foot diameter and smaller timber debris was observed between the upstream and downstream columns of Pier 1.

INSPECTION FINDINGS

The top of the pier cap on the upstream end of Pier 1.Water Level Reference:

WATERLINE DATUM

Waterline Elevation (feet):

Description:

The waterline was approximately 11.2 feet below reference.

4.

Piers 1 and 2Substructure(s) Inspected:

SUBSTRUCTURE INSPECTION DATA

General Shape:

7.8 feetMaximum Water Depth at Substructure(s) Inspected (feet):

Piers 1 and 2 consist of two hexagon shaped reinforced concrete columns. The foundation configuration is unknown.

Code:Item 62: Culvert:

6

B/6/16Code:Item 92B: Underwater Inspection:

Code:

(Minnesota specific codes are used for 92B and 113)

NBIS CODING INFORMATION5.

Item 60: Substructure:

Item 61: Channel and Channel Protection:

6Code:

District 8District:

CSAH 33

County:

The superstructure consists of a three span steel girder bridge supported by two concrete piers and two concrete abutments.

Bridge Description:

037 - Lac qui Parle County

Facility Carried:

BRIDGE DATA1.


Bridge #:

LAC QUI PARLE RIVERFeature Intersected:

7132

Underwater Visibility (feet):

Sunny, 75 °FWeather Conditions:

None/Negligible

3.

None/NegligibleWaterway Velocity (ft/sec):

06/18/2016

Professional Engineer/Team Leader:

INSPECTION DATA2.

Roy Forsyth

Date of Underwater Inspection:

Marc SternInspection Diver:

885 Scour 1 EA 1

STRUCTURAL ELEMENT CONDITION RATING

Conditions

6.

R

Bridge is scour critical because abutment or pier foundation is rated as unstable due to observed scour at bridge site.

Item 113: Scour Critical Bridge: Code:

No (Mark your selection with an X)Yes X

205

CS3 CS4

Reinforced Concrete Column 44 EA

CS2ELEM # Unit CS1Element Description Quantity

The routine underwater inspection of Bridge 7132 (CSAH No. 33 over the Lac Qui Parle River) was completed on June, 18, 2016. The underwater inspection was conducted from shore. The inspection was conducted by a team consisting of a PE-Diver with a valid MnDOT Team leader certification, a backup diver and a dive tender. The inspection utilized commercial dive equipment and techniques (SSA and/or SCUBA) in accordance with OSHA regulations. Profiles were taken along the upstream and downstream faces of the bridge and around the periphery of substructure units to determine the presence, location and area ofscour.

The bridge elements inspected consisted of 2 piers. The foundation configuration for Piers 1 and 2 is unknown. Inspection procedures followed FHWA guidance and the MnDOT Bridge and Structure Inspection Program Manual with channel bottom probing to search for bottom of foundations. The routine underwater inspection frequency is recommended to remain at 60 months based on those findings and risk factors. Also, inspection procedures should continue to follow the above approach and standard guidance with 100% Level I and 10% Level II intensity efforts.

INSPECTION PROCEDURES


S - Pin and Hanger Spec. Feat.Pier Foundation (Material/Type)

1 - CONCCantilever ID

+ W A T E R W A Y +Number of Spans Historic Status

4 - PILE BENT

07/30/2015

Underwater 60Culvert Type 3 - FTG PILE

Pinned Asbly. 60

06/18/2016

Barrel Length

204.0 ft. Navigation Control

Waterway Opening (sf.) 2701Structure Length

ft. Year Painted0 - No nav. control on

Deck Width (Out-to-Out) 26.6

+ P A I N T +

APPR: 0 TOTAL:5 - Not eligible

MAIN: 3

Main Span Length 80.3 ft.Drainage Area (sq. mi.)

B R I D G E D A T A +Main Span Detail

0 - SUBSTANDARD+ M I S C.

Appr. Span Type Structure Flared

GR Termini 0 - SUBSTANDARD

Appr. Guardrail

Main Span Type 4 - Steel Continuous Median Width On Bridge

ft. Bridge Railing 0 - SUBSTANDARD

0 - SUBSTANDARD

Main Span Design 01 - Beam Span

ft. GR Transition

Skew 0

Y/N Freq DateAbutmentFoundation(Material/Type)

1 - CONC Frac. Critical

N - No Splice

D E P T H I N S P. +Appr. Span Design

0 - No flare+ I N

Appr. Span Detail Field Conn. ID

Parallel Structure N - No parallel structure

Pier Protection

0 - Not RequiredRating Date 04/23/2015

4898 sq. ft. Traffic

ft. 50B. Rt 0.00Sidewalk Width 50A. Lt 0.00

Roadway Area (Curb-to-Curb)

Posted Load 2 - Vehicle & Semi (Type R12-5)Posting

Structure Area (Out-to-Out) 5426 sq. ft.36 DBL: 36VEH: 26 SEMI:

Rt 42 ARail Type Lt 42 C N - N/AN - N/A B N - N/A

N - Not Applicable Overweight Permit CodesCurb Height Lt

ft. Horizontal 1 - Object Markers

0.50 ft. Vertical0.50 ft. Rt

Wear Surf Install Year

8686 sq. ft. Nav. Vert. Lift Bridge Clear. (ft.)R - CRIT - MONITOR

Year 2009Primer Type MN Scour Code

Painted Area

Unsound Paint % Nav. Clr. (ft.)Deck Material 1 - Concrete Cast-in-Place 0.0Wear Surf Type 6 - Bituminous

Vert. 0.0 Horiz.

S I G N S +Operating Rating 2 - HS TRUCK

0 - None + B R I D G E

Inventory Rating 2 - HS TRUCK 9.3

15.6Deck Rebars Install Year

Deck Rebars

Finish TypeWear Course/Fill Depth 0.33 ft.0 - None

Design Load 2 - H 15

+ C A P A C I T Y R A T I N G S +Deck Membrane

45 ° 1Inspector Name Forsyth, Roy

Latitude Control Section (TH Only) Status' 0.04 ''

2 - 2-way traffic

Routine Inspection Frequency 12

Sect., Twp., Range

0.2 MI SE OF JCT CSAH 48 Level of Service 1 - MAINLINE

- 42W Roadway Type23 - 118N

Detour Length 5.0 mi.R A T I N G S +

Custodian 02 - County Highway Agency

Owner 02 - County Highway Agency Deck 6 UnsoundDeck %

C O N D I T I O N° 53 '

P - Posted for Load

Longitude 95 007+00.370 + N B I 12.17 '' Reference Point

Crew

+ I N S P E C T I O N +

Agency Br. No. 77

District 08

Bridge Match ID (TIS) 0 Userkey

CSAH 33 over LAC QUI PARLE RIVER

Minnesota Structure Inventory Report

Bridge ID: 7132

+ G E N E R A L + + R O A D W A Y +

Date: 12/06/2016

Sufficiency Rating 61.0Roadway Name or Description33

City

Routine Inspection Date 06/07/2016

Desc. Loc.

Township 37011 - LAC QUI PARLE CSAH 33 (Lake Rd)

Number

NRoadway O/U Key Route On StructureMaint. Area Structurally Deficient

NRoute Sys 04 - CSAHCounty 037 - Lac qui Parle County Functionally Obsolete

Lanes

Waterway Adequacy 8Max. Vert. Clear.

ft.Legislative District 20Aft.Potential ABC 2 - N/A ft.

ft.On - Off System Roadway Width 24.00 ft.

Vertical Clearance ft.1 - ON

Underclearances N

Service On 1 - Highway Appr. Surface Width+ S A F E T Y F E A T U R E S +

5 - Waterway Bridge Roadway Width 24.0

32.0 ft.

Service Under

ft.

ft. Approach Alignment 8Horizontal Clear.

ft.

ft.+ S T R U C T U R E + Lateral Clearance

HCADT ADTT6

Year Built 1955

MN Year Reconstructed Functional Class

%Channel 6

Substructure

0Superstructure 6

ON 2 UNDER160 YEAR 2008BMU Agreement ADT

Structure Evaluation 4If Divided

D I M E N S I O N S +Bridge Plan Location 3 - COUNTY

Deck Geometry 5NB-EB SB-WBDate Opened to Traffic

+ R D W Y

FHWA Year Reconstructed

MN Temporary Status

07 - Rural - Major CollectorCulvert N

A P P R A I S A L R A T I N G S ++ N B I

County:City:Township:

Township:Section: Range:Span Type:

NBI Deck: Super: Sub: Chan: Culv:

Appraisal Ratings - Approach: Waterway:Required Bridge Signs - Load Posting:

Horizntal:

Traffic:

Vertical:

MN Scour Code:Open, Posted, Closed:

Location:Route:Control Section:

Local Agency Bridge Nbr.:

Ref. Pt.:

Maint. Area:

Length:Deck Width:Rdwy. Area/ Pct. Unsnd:Paint Area/ Pct. Unsnd:Culvert:

Lac qui Parle County

37011 - LAC QUI PARLE118N23 42W

4 - Steel Continuous 2

6 6 6 6 N

8 82 - Vehicle & Semi (TypeR12-5)1 - Object Markers

0 - Not Required

N - Not Applicable

R - CRIT - MONITOR

0.2 MI SE OF JCT CSAH 4804 - CSAH 33 007+00.370

204.026.6

4898 sq. ft. / %8686 sq. ft. / %

N/A

P - Posted for Load

ft.

ft.

Postings: 26 36 36List:

MINNESOTA BRIDGE INSPECTION REPORT12/07/2016Inspector: CO Bridge

BRIDGE 7132 CSAH 33 OVER LAC QUI PARLE RIVER

Unofficial Structurally Deficient NNUnofficial Functionally Obsolete

Unofficial Sufficiency Rating 61.0

ELEMNBR ELEMENT NAME INSP. DATE QUANTITY

QTYCS 1

QTYCS 2

QTYCS 3

QTYCS 4REPORT TYPE

Reinforced Concrete Deck 12/06/2016 5426 SF 5386 40 0 012 Underwater06/07/2016 5426 SF 5386 40 0 0Routine

Notes: Concrete with bituminous overlay. Length 204'. Width 26.6'.2016 - CS2 Areas of light leaching on Span 1 and 3. Cracking with efflorescence. Transverse cracks with effloresence in span 1 and 3. Noaccess to span 2.

510 - Wearing Surfaces 4896 SF 4861 9 26 0

Notes: Bituminous Overlay. Length 204'. Width 24'.2014 - Spalls at expansion joints are less the 2% of the deck area.2006 - Bridge deck milled & overlayed.2016 - CS3 East expansion joint. Significant cracking and potholes.2016 - CS2 West expansion joint. Sealed crack.

Underwater 12/06/2016

4896 SF 4861 9 26 0Routine 06/07/2016

Steel Open Girder/Beam 12/06/2016 804 LF 0 800 4 0107 Underwater06/07/2016 804 LF 0 800 4 0Routine

Notes: The paint is in good condition with minor surface rust present in some areas. Paint is peeling and exposing metal. Rusting with somesection loss is present on the lower flange of the fascia beams.2016 - CS2 Surface corrosion.2016 - CS3 Section loss, flaking rust SE corner of bridge.

515 - Steel Protective Coating 7763 SF 0 0 7613 150

Notes: Dimensions: I-Beams 2'9" X 11.5". Diaphragms 1'6" X 4" X 7' X 33.2016 - CS4 Areas of exposed steel.2016 - CS3 Moderate paint deterioration.


7763 SF 0 0 7613 150Routine 06/07/2016

Steel Pin and Pin & Hanger Assemblyor both

12/06/2016 8 EA 0 8 0 0161 Underwater

06/07/2016 8 EA 0 8 0 0RoutineNotes: 2016 - No relevant indication were noted in the pins or hangers. Paint is curling. There is freckled rust.


Notes: 2016 - Moderate paint deterioration.


20 SF 0 0 20 0Routine 06/07/2016

Reinforced Concrete Column 12/06/2016 4 EA 0 4 0 0205 Underwater06/07/2016 4 EA 0 4 0 0Routine

Notes: 2016 - Moderate staining. Scaling up to 1/4" deep from two feet above to 1 foot below the water line.

Reinforced Concrete Abutment 12/06/2016 91 LF 0 91 0 0215 Underwater06/07/2016 91 LF 0 91 0 0Routine

Notes: Abutments 33 LF each. SW wingwall 5 LF. NW & NE wingwall 7 LF each. SE wingwall 6 LF.2016 - Moderate staining.

Reinforced Concrete Pier Cap 12/06/2016 52 LF 0 52 0 0234 Underwater06/07/2016 52 LF 0 52 0 0Routine

Notes: 2016 - Moderate staining.

Movable Bearing 12/06/2016 8 EA 0 8 0 0311 Underwater06/07/2016 8 EA 0 8 0 0Routine

Notes: Located on the abutments.2016 - Sole plates are rusting at contact point with concrete.

Fixed Bearing 12/06/2016 8 EA 0 8 0 0313 Underwater06/07/2016 8 EA 0 8 0 0Routine

Notes: Located on the piers.2016 - Surface corrosion.

Metal Bridge Railing 12/06/2016 402 LF 0 402 0 0330 Underwater06/07/2016 402 LF 0 402 0 0Routine

Notes: Collision damage northwest, railpost is broken loose.2016 - Surface corrosion.


Notes: Dimensions: Height 2.6'.2016 - Paint system failure. Steel exposed.


1045 SF 0 0 0 1045Routine 06/07/2016

Reinforced Concrete Bridge Railing 12/06/2016 408 LF 371 31 6 0331 Underwater06/07/2016 408 LF 371 31 6 0Routine

Notes: Four concrete end post and concrete curb below metal railing.2016 - CS3 South railing from the west 157' to 163'. Spall greater than 1" deep from impact with ice.2016 - CS2 North railing from the west 40' to 61'. South railing from the west 184' to 194'. Scaling of concrete curb.

Critical Deficiencies or Safety Hazards 12/06/2016 1 EA 1 0 0 0800 Underwater06/07/2016 1 EA 1 0 0 0Routine

Notes: 2016 - NO CRITICAL FINDINGS OBSERVED DURING THE INSPECTION.

Bituminous Approach Roadway 12/06/2016 2 EA 2 0 0 0822 Underwater06/07/2016 2 EA 2 0 0 0Routine

Notes: 2006 - Bituminous mill and overlay.2016 - Bituminous approach smooth and even.

Secondary Members (Superstructure) 12/06/2016 1 EA 0 0 1 0855 Underwater06/07/2016 1 EA 0 0 1 0Routine

Notes: 33 steel diaphragms.2016 - Section loss and flaking rust of SE corner diaphragm.

Steel Section Loss 12/06/2016 1 EA 1 0 0 0881 Underwater06/07/2016 1 EA 1 0 0 0Routine

Notes: 2016 - Minor section loss of steel girders on the lower flange of the fascia beams.

Concrete Shear Cracking 12/06/2016 1 EA 1 0 0 0883 Underwater06/07/2016 1 EA 1 0 0 0Routine

Notes: Use this element to monitor the presence of shear cracking on concrete elements. Pay particular attention to the concrete pier caps.


QTYCS 1

QTYCS 2

QTYCS 3

QTYCS 4


REPORT TYPE

Scour 12/06/2016 1 EA 1 0 0 0885 Underwater06/07/2016 1 EA 1 0 0 0Routine

Notes: R - Scour critical. Monitoring required.

Load Posting or Vertical ClearanceSigning

12/06/2016 1 EA 1 0 0 0890 Underwater

06/07/2016 1 EA 1 0 0 0RoutineNotes: 2016 - Two Load Posting 22-36-36. Two advanced warning load posting 22-36-36.

Other Bridge Signing 12/06/2016 1 EA 1 0 0 0891 Underwater06/07/2016 1 EA 1 0 0 0Routine

Notes: 2015 - 2016 Four Object Markers.

Slopes & Slope Protection 12/06/2016 1 EA 0 1 0 0892 Underwater06/07/2016 1 EA 0 1 0 0Routine

Notes: 2016 - Moderate erosion of slopes.

Deck & Approach Drainage 12/06/2016 1 EA 1 0 0 0894 Underwater06/07/2016 1 EA 1 0 0 0Routine

Protected Species 12/06/2016 1 EA 0 1 0 0900 Underwater06/07/2016 1 EA 0 1 0 0Routine

Notes: 2016 - Cliff swallows are nesting on the structure.2016 - No bats are present on the structure.

General Notes:

Inventory Notes:

58. Deck NBI:

36A. Brdg Railings NBI:

36B. Transitions NBI:

36C. Appr Guardrail NBI:

36D. Appr GuardrailTerminal NBI:

59. Superstructure NBI:

60. Substructure NBI:

61. Channel NBI:

62. Culvert NBI:

71. Waterway Adeq NBI:

72. Appr RoadwayAlignment NBI:


QTYCS 1

QTYCS 2

QTYCS 3

QTYCS 4


REPORT TYPE


QTYCS 1

QTYCS 2

QTYCS 3

QTYCS 4


REPORT TYPE

Inspector's Signature Reviewer's Signature

Photo 1 - View of Bridge 7132, looking southwest.

Photo 2 - View of West Abutment, looking west.

Pictures

Pictures

Photo 3 - View of East Abutment, looking east.

Photo 4 - View of Pier 1, looking east.

Pictures

Photo 5 - View of Pier 2, looking east.

2016 underwater bridge inspection report - … · equipment - ultrasonic portable flaw detector...

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