bridge # csah 19 over n fk crow riverrating date 05/17/2011 3014 sq. ft. traffic sidewalk width 50a....

2016 UNDERWATER

BRIDGE INSPECTION REPORT

BRIDGE #

DISTRICT: COUNTY: CITY/TOWNSHIP:

Date of Inspection:

Equipment Used:

Inspected By:

Report Written By:

Report Reviewed By:

Final Report Date:

73574

CSAH 19 over N FK CROW RIVER

District 3 Stearns CROW RIVER

09/16/2016

Owens, Garrett; Stuber, Cory

Garrett Owens

County Highway AgencyOwner:

MinnesotaSTATE:

UNDERWATER SUMMARY 3

UNDERWATER INSPECTION 4

UNDERWATER INSPECTION PROCEDURES 6

STRUCTURE INVENTORY 7

ELEMENTS 8

PICTURES 11

DRAWINGS 14

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, Inc.

9687Contractor Job Number:

RECOMMENDATIONS

REPORT SUMMARY

UNDERWATER INSPECTION

The substructure units inspected at Bridge No. 73574, Bents 1 and 2, were found to be in very good condition below the water. The cast-in-place concrete piles were sound with no notable deficiencies. The channel bottom around the substructure units consisted of soft silt and cobbles with signs of aggradation occurring since the 2012 underwater inspection. No scour was noted at the time of the inspection.

(A) The cast-in-place concrete piles were found to be in good condition with no notable deficiencies.

(B) The channel bottom material around Bents 1 and 2 consisted of soft silt and cobbles with up to 2 feet of probe rod penetration.

INSPECTION FINDINGS

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The top of the pile cap at the upstream end of Bent 1.Water Level Reference:

WATERLINE DATUM

Waterline Elevation (feet):

The waterline was approximately 8.0 feet below reference.Description:

92.0

4.

Bents 1 and 2Substructure(s) Inspected:

SUBSTRUCTURE INSPECTION DATA

General Shape:

4.1Maximum Water Depth at Substructure(s) Inspected (feet):

Bents 1 and 2 each consist of a single row of five steel encased cast-in-place concrete piles.

Code:Item 62: Culvert:

8

Y 48 09/2016Code: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:

8Code:

District 3District:

CSAH 19

County:

The superstructure consists of a three span, concrete bridge supported by two cast-in-place concrete pile bents and two concrete abutments.

Bridge Description:

073 - Stearns

Facility Carried:

BRIDGE DATA1.


Bridge #:

N FK CROW RIVERFeature Intersected:

73574

Underwater Visibility (feet):

Cloudy, 70°FWeather Conditions:

1

3.

0.5Waterway Velocity (ft/sec):

09/16/2016

Professional Engineer/Team Leader:

INSPECTION DATA2.

Garrett R. Owens, P.E.

Date of Underwater Inspection:

Garrett R. Owens, P.E.Inspection Diver:

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885 Scour 1 EA 1

STRUCTURAL ELEMENT CONDITION RATING

Conditions

6.

L

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

225

CS3 CS4

Steel Pile 1010 EA

CS2ELEM # Unit CS1Element Description Quantity

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The routine underwater inspection of Bridge 73574 (CSAH 19 over the North Fork Crow River) was completed on September 16, 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 of scour.

The bridge elements inspected consisted of two CIP pile bents. According to the bridge inventory or design drawings, Bents 1-2 were founded on a single row of five steel encase cast-in-place piles. Inspection procedures followed FHWA guidance and the MnDOT Bridge and Structure Inspection Program Manual with channel bottom probing to search for foundations. The routine underwater inspection frequency is recommended to remain at a maximum of 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


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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

Underwater Y 60Culvert Type 8 - INTEGRAL

Pinned Asbly.

09/16/2016

Barrel Length

94.2 ft. Navigation Control

Waterway Opening (sf.) 440Structure Length

ft. Year Painted

0 - No nav. control on waterwayDeck Width (Out-to-Out) 35.3

+ P A I N T +

APPR: 0 TOTAL:5 - Not eligible

MAIN: 3

Main Span Length 35.0 ft.Drainage Area (sq. mi.) 181.0

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

1 - MEETS STANDARDS+ M I S C.

Appr. Span Type Structure Flared

GR Termini 1 - MEETS STANDARDS

Appr. Guardrail

Main Span Type 2 - Concrete Continuous Median Width On Bridge

ft. Bridge Railing 1 - MEETS STANDARDS

1 - MEETS STANDARDS

Main Span Design 09 - Slab Span

ft. GR Transition

Skew 20 RIGHT

Y/N Freq Date

Abutment Foundation (Material/Type)

1 - CONC Frac. Critical

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 Required

Rating Date 05/17/20113014 sq. ft. Traffic

ft. 50B. Rt 0Sidewalk Width 50A. Lt 0

Roadway Area (Curb-to-Curb)

Posted Load 0 - Not Required

PostingStructure Area (Out-to-Out) 3328 sq. ft.

DBL:VEH: SEMI:

Rt 22 ARail Type Lt 22 C N - N/AN - N/A B N - N/A

N - Not Applicable Overweight Permit CodesCurb Height Lt

ft. Horizontal 0 - Not Required

0 ft. Vertical0 ft. Rt

Wear Surf Install Year 2011

sq. ft. Nav. Vert. Lift Bridge Clear. (ft.)

L - STBL - LOW RISK

Year 2011Primer Type MN Scour Code

Painted Area

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

(concurrently placed with stru

Vert. 0.0 Horiz.

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

1 - Epoxy Coated Reinforcing + B R I D G E

Inventory Rating 2 - HS TRUCK 33.5

55.9Deck Rebars Install Year 2011

Deck Rebars

Finish TypeWear Course/Fill Depth 0.00 ft.

0 - None

Design Load A - HL 93

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

45 ° 26

Inspector Name Owens, Garrett

Latitude Control Section (TH Only) Status' 56.16 ''

2 - 2-way traffic

Routine Inspection Frequency 24

Sect., Twp., Range

1.7 MI E OF JCT CR196 Level of Service 1 - MAINLINE

- 34W Roadway Type24 - 123N

Detour Length 3.0 mi.R A T I N G S +

Custodian 02 - County Highway Agency

Owner 02 - County Highway AgencyDeck 8 Unsound

Deck %

C O N D I T I O N° 53 '

A - Open

Longitude 94 013+00.120 + N B I 32.27 '' Reference Point

Crew

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

Agency Br. No. 113

District 03

Bridge Match ID (TIS) 0 Userkey

CSAH 19 over N FK CROW RIVER

Minnesota Structure Inventory Report

Bridge ID: 73574

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

Date: 09/21/2016

Sufficiency Rating 99.9Roadway Name or Description

19

City

Routine Inspection Date 12/30/2014

Desc. Loc.

Township 73007 - CROW RIVER CSAH 19

Number

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

NRoute Sys 04 - CSAHCounty 073 - Stearns Functionally Obsolete

Lanes

Waterway Adequacy 9Max. Vert. Clear.

ft.Legislative District 13Aft.Potential ABC 2 - N/A ft.

ft.On - Off System Roadway Width 32.0 ft.

Vertical Clearance ft.0 - OFF

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 32.0

30.0 ft.

Service Under

ft.

32.0 ft. Approach Alignment 9Horizontal Clear.

ft.

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

HCADT ADTT8

Year Built 2011

MN Year Reconstructed Functional Class

%Channel 8

Substructure

0Superstructure 8

ON 2 UNDER

235 YEAR 2011BMU Agreement ADT

Structure Evaluation 8If Divided

D I M E N S I O N S +Bridge Plan Location

Deck Geometry 7NB-EB SB-WBDate Opened to Traffic

+ R D W Y

FHWA Year Reconstructed

MN Temporary Status

08 - Rural - Minor CollectorCulvert N

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

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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:

Stearns

73007 - CROW RIVER

123N24 34W

1 - Concrete 1 - Slab

8 8 8 8 N

9 9

0 - Not Required

0 - Not Required

0 - Not Required

N - Not Applicable

L - STBL - LOW RISK

1.7 MI E OF JCT CR196

04 - CSAH 19 013+00.120

94.2

35.3

3014 sq. ft. / %

sq. ft. / %

N/A

A - Open

ft.

ft.

Postings:List:

MINNESOTA BRIDGE INSPECTION REPORT

01/20/2017

BRIDGE 73574 CSAH 19 OVER N FK CROW RIVER

Unofficial Structurally Deficient N

NUnofficial Functionally Obsolete

Unofficial Sufficiency Rating 99.9

ELEMNBR ELEMENT NAME INSP. DATE QUANTITY

QTYCS 1

QTYCS 2

QTYCS 3

QTYCS 4REPORT TYPE

Reinforced Concrete Slab 09/16/2016 3328 SF 3328 0 0 038 Underwater

3328 SF 3328 0 0 0Migrated Values

Notes: 2014-1 hairline crack running the entire length of the bridge at CL.

510 - Wearing Surfaces 3014 SF 3014 0 0 0

Notes: Concrete Slab with Bituminous Overlay Notes:

Underwater 09/16/2016


Reinforced Concrete Abutment 09/16/2016 121 LF 121 0 0 0215 Underwater

121 LF 121 0 0 0Migrated Values

Notes: [2016] Migrator added 40 LF to abutment quantity to account for wingwalls (CS1:40 CS2:0 CS3:0 CS4:0).

Steel Pile 09/16/2016 10 EA 10 0 0 0225 Underwater

10 EA 10 0 0 0Migrated Values

515 - Steel Protective Coating 999 SF 999 0 0 0

Notes: [2016] Migrator assumed CS1 and a quantity of 999 SF.

Underwater 09/16/2016


Reinforced Concrete Pier Cap 09/16/2016 76 LF 76 0 0 0234 Underwater


Notes: 2014-a few hairline cracks present

Pourable Joint Seal 09/16/2016 64 LF 64 0 0 0301 Underwater


Reinforced Concrete Approach Slab 09/16/2016 1200 SF 1200 0 0 0321 Underwater


Notes: [2016] Migrator assumed an approach slab length of 20FT and used the inventory quantity of 30FT for the width.

Reinforced Concrete Bridge Railing 09/16/2016 209 LF 209 0 0 0331 Underwater


Notes: 2014-Minor vertical cracks between the control joints on both sides of the bridge.

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Critical Deficiencies or Safety Hazards 09/16/2016 1 EA 1 0 0 0800 Underwater


Notes: NO CRITICAL FINDINGS OBSERVED DURING THE LAST INSPECTION.

Concrete Decks - Cracking & Sealing 09/16/2016 0 LF 0 0 0 0810 Underwater


Scour 09/16/2016 1 EA 1 0 0 0885 Underwater

Slopes & Slope Protection 09/16/2016 1 EA 1 0 0 0892 Underwater


Guardrail 09/16/2016 1 EA 1 0 0 0893 Underwater


Deck & Approach Drainage 09/16/2016 1 EA 1 0 0 0894 Underwater


Protected Species 09/16/2016 1 EA 1 0 0 0900 Underwater


Notes: Use this element to track the presence of protected species living on this structure.

General Notes: July 2014: Bridge NEW added to inventory by MnDOT Bridge Office.The January 1, 2014, "dummy" inspection was created by the MnDOT Bridge Office --- THIS IS NOT AN ACTUAL FIELDINSPECTION.

2014-See element notes. Insp. AML and BTK.

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:

2014-Minor crack running the entire length of the bridge at the centerline of the bridge.

2014-Minor cracks present on pier caps


QTYCS 1

QTYCS 2

QTYCS 3

QTYCS 4


REPORT TYPE

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QTYCS 1

QTYCS 2

QTYCS 3

QTYCS 4


REPORT TYPE

Inspector's Signature Reviewer's Signature

Garrett Owens

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Photo 1 - North Elevation, Looking South

Photo 2 - South Elevation, Looking North

Pictures

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Pictures

Photo 3 - View of West Abutment, Looking West

Photo 4 - View of Pier 1, Looking West

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Pictures

Photo 5 - View of Pier 2, Looking East

Photo 6 - View of East Abutment, Looking East

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bridge # csah 19 over n fk crow riverrating date 05/17/2011 3014 sq. ft. traffic sidewalk width 50a....

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