BRIDGE # LAKE SHADY AVE over MID FK ZUMBRO R · NBR ELEMENT NAME INSP. DATE QUANTITY QTY CS 1 QTY...

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:

55033

LAKE SHADY AVE over MID FK ZUMBRO R

District 6 Olmsted Oronoco

06/14/2016

Forsyth, Roy

Roy Forsyth

City or Municipal Highway AgencyOwner:

MinnesotaSTATE:

UNDERWATER SUMMARY 3

UNDERWATER INSPECTION 4

UNDERWATER INSPECTION PROCEDURES 6

STRUCTURE INVENTORY 7

ELEMENTS 8

PICTURES 12

TABLE OF CONTENTS

PAGE NUMBER

Contractor:

(A) Monitor the minor scour depressions and footing exposure at Pier 2 during future underwater inspections and after (or during) periods of high water and high flows.

(B) 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 unit inspected at Bridge No. 55033, Pier 2, was found to be generally in good condition with no defects of structural significance observed. The concrete of the pier was smooth and sound throughout. No foundation undermining was detected but the maximum vertical face footing exposure at Pier 2 measured at maximum 2 feet. The channel bottom material consisted of random 12 inch diameter riprap with silty sand and gravel.

(A) The concrete was smooth and sound with no notable deterioration.

(B) The footing at the downstream column of Pier 2 was exposed around the full perimeter with up to 1.6 feet of vertical face exposure.

(C) The footing at the middle column of Pier 2 was exposed along the north and west faces with up to 2 feet of vertical face exposure.

(D) The footing at the upstream column of Pier 2 was exposed along the north, east, and west faces with up to 1.9 feet of vertical face exposure.

(E) The channel bottom material consisted of silty sand and gravel with up to 3 inches of probe rod penetration and random 12 inch diameter riprap.

INSPECTION FINDINGS

Top of pier cap at the upstream end of Pier 2.Water Level Reference:

WATERLINE DATUM

Waterline Elevation (feet):

The waterline was approximately 17.0 feet below the reference. Description:

945.7

4.

Pier 2Substructure(s) Inspected:

SUBSTRUCTURE INSPECTION DATA

General Shape:

5.4Maximum Water Depth at Substructure(s) Inspected (feet):

Each pier consists of a concrete pier cap supported by three round concrete columns founded on individual square concrete footings and driven H-piles.

Code:Item 62: Culvert:

7

Y 48 06/2016Code: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:

7Code:

District 6District:

LAKE SHADY AVE

County:

The superstructure consists of a concrete deck resting on three prestressed concrete multi-girder spans supported by two reinforced concrete abutments and two reinforced concrete multi-column piers. The substructure units are designated as North Abutment, Piers 1 and 2, and South Abutment.

Bridge Description:

055 - Olmsted

Facility Carried:

BRIDGE DATA1.


Bridge #:

MID FK ZUMBRO RFeature Intersected:

55033

Underwater Visibility (feet):

Sunny, 75°FWeather Conditions:

0.5 ft.

3.

0.5 ft/sWaterway Velocity (ft/sec):

06/14/2016

Professional Engineer/Team Leader:

INSPECTION DATA2.

Roy A. Forsyth

Date of Underwater Inspection:

Roy ForsythInspection Diver:

Reinforced Concrete Pile Cap/footing 24220 LF 24

885 Scour 1 1EA

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:

X No (Mark your selection with an X)Yes

205

CS3 CS4

Reinforced Concrete Column 33 EA

CS2ELEM # Unit CS1Element Description Quantity

The routine underwater inspection of Bridge 55033 (Lake Shady Ave. over the Middle Fork, Zumbro River) was completed on June, 14, 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. Due to waterway conditions at the time of inspection, the inspection could be accomplished by wading 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 3 reinforced concrete columns. According to the bridge inventory or design drawings, Pier 2 was founded on driven steel H-piles. 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 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


Spec. Feat.Pier Foundation (Material/Type)

1 - CONCCantilever ID

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

3 - FTG PILE

Underwater 60Culvert Type 2 - SPRD ROCK

Pinned Asbly.

06/14/2016

Barrel Length

166.5 ft. Navigation Control

Waterway Opening (sf.) 1652Structure Length

ft. Year Painted

0 - No nav. control on waterwayDeck Width (Out-to-Out) 44.2

+ P A I N T +

APPR: 0 TOTAL:5 - Not eligible

MAIN: 3

Main Span Length 54.4 ft.Drainage Area (sq. mi.) 207.0

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 5 - Prestress or Precast Median Width On Bridge

ft. Bridge Railing 1 - MEETS STANDARDS

1 - MEETS STANDARDS

Main Span Design 01 - Beam Span

ft. GR Transition

Skew 0

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 05/06/20166792 sq. ft. Traffic

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

Roadway Area (Curb-to-Curb)

Posted Load 0 - Not Required

PostingStructure Area (Out-to-Out) 7359 sq. ft.

DBL:VEH: SEMI:

Rt 22 ARail Type Lt 22 C 1 - No Restriction

1 - No Restriction

B 1 - No Restriction

N - Not Applicable Overweight Permit CodesCurb Height Lt

ft. Horizontal 1 - Object Markers

0.00 ft. Vertical0.00 ft. Rt

Wear Surf Install Year

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

R - CRIT - MONITOR

Year 1994Primer 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 25.80

52.80Deck Rebars Install Year 1985

Deck Rebars

Finish TypeWear Course/Fill Depth 0.00 ft.

0 - None

Design Load 5 - HS 20

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

44 ° 9

Inspector Name Forsyth, Roy

Latitude Control Section (TH Only) Status' 57.79 ''

2 - 2-way traffic

Routine Inspection Frequency 24

Sect., Twp., Range

0.1 MI S OF 5TH ST Level of Service 1 - MAINLINE

- 14W Roadway Type7 - 108N

Detour Length 2.0 mi.R A T I N G S +

Custodian 04 - City or Municipal Highway Agency

Owner 04 - City or Municipal Highway Agency

Deck 7 Unsound Deck %

C O N D I T I O N° 32 '

A - Open

Longitude 92 000+00.171 + N B I 47.24 '' Reference Point

Crew

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

Agency Br. No. 95

District 06

Bridge Match ID (TIS) 0 Userkey

LAKE SHADY AVE over MID FK ZUMBRO R

Minnesota Structure Inventory Report

Bridge ID: 55033

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

Date: 07/14/2016

Sufficiency Rating 99.9Roadway Name or Description

87

City Oronoco

Routine Inspection Date 11/01/2014

Desc. Loc.

Township LAKE SHADY AVE

Number

NRoadway O/U Key Route On StructureMaint. Area 6A Structurally Deficient

NRoute Sys 10 - MUNCounty 055 - Olmsted Functionally Obsolete

Lanes

Waterway Adequacy 8Max. Vert. Clear.

ft.Legislative District 29Aft.Potential ABC 2 - N/A ft.

ft.On - Off System Roadway Width 40.8 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 40.8

38.0 ft.

Service Under

ft.

40.7 ft. Approach Alignment 8Horizontal Clear.

ft.

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

HCADT ADTT7

Year Built 1985

MN Year Reconstructed Functional Class

%Channel 6

Substructure

0Superstructure 7

ON 2 UNDER

525 YEAR 2013BMU Agreement ADT

Structure Evaluation 7If Divided

D I M E N S I O N S +Bridge Plan Location 1 - CENTRAL

12/1/1985Deck Geometry 9

NB-EB SB-WBDate Opened to Traffic

+ R D W Y

FHWA Year Reconstructed

MN Temporary Status

09 - Rural - LocalCulvert 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:

Olmsted

Oronoco

108N7 14W

5 - Prestressed Concrete 2 -Stringer/Multi-beam or Girder

7 7 7 6 N

8 8

0 - Not Required

1 - Object Markers

0 - Not Required

N - Not Applicable

R - CRIT - MONITOR

0.1 MI S OF 5TH ST

10 - MUN 87 000+00.171

6A

166.5

44.2

6792 sq. ft. / %

sq. ft. / %

N/A

A - Open

ft.

ft.

Postings:List:

MINNESOTA BRIDGE INSPECTION REPORT

09/12/2016

Inspector: CO Bridge

BRIDGE 55033 LAKE SHADY AVE OVER MID FK ZUMBRO R

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 Deck 07/14/2016 7359 SF 7212 0 147 012 Underwater

7359 SF 7212 0 147 0Migrated Values

Notes: [2012-14] There are scattered transverse cracks in both slab overhangs with efflorescence.

510 - Wearing Surfaces 6792 SF 6792 0 0 0

Notes: Top of Concrete Deck with Epoxy Reinforcement Notes: [2012-14] There are no spalls, delaminations, or patches noted in the surface ofthe deck. The bottom 3 1/2 inches of the in place deck is constructed from transverse pre-cast concrete panels.

Underwater 07/14/2016


Prestressed Concrete OpenGirder/Beam

07/14/2016 830 LF 780 50 0 0109 Underwater

830 LF 780 50 0 0Migrated Values

Notes: [2012-14] Span # 1 - Over Pier # 1 - girders 4 & 5 have small spalls along the top flanges.

[2012-14] Span # 2 - Over Pier # 1 - girder 1 has a small spall along the top flange. Girders 4 & 5 have a small chip along the top flange. Theeast fascia girder near the north end has a small chip in the bottom flange.

Reinforced Concrete Column 07/14/2016 6 EA 6 0 0 0205 Underwater

6 EA 6 0 0 0Migrated Values

Notes: [2012-14] Pier # 1 Columns - OK.

[2012-14] Pier # 2 Columns - OK.

Reinforced Concrete Abutment 07/14/2016 128 LF 84 44 0 0215 Underwater


Notes: [2016] Migrator added 40 LF to abutment quantity to account for wingwalls (CS1:10 CS2:30 CS3:0 CS4:0).South Abutment [2012-14]- Paint over graffiti on abutment. Has 7 vertical 0.013 cracks scattered scattered across the front face, there are 2random 0.013 cracks along the parapet wall with staining near each end and random cracking with a delaminated area at the west end of theparapet wall where it connects with the wingwall. There is leaching noted at the end block construction joint next to each wingwall.

North Abutment [2012-14]- has 7 vertical 0.013 cracks scattered along the front face, 2 small rust spots at each end. It was noted that there isleaching at the end block construction joint next to each wingwall.

Wingwall notes: Southwest Wingwall - [2012-14] has 2 diagonal 0.010" cracks and an area of delaminated concrete at the connection point tothe parapet wall.Southeast Wingwall - [2012-14]has an area of minor map cracking at the far end.Northeast Wingwall - [2012-14]has 3 minor vertical 0.010" cracks along the top edge and small chip at the far end.Northwest Wingwall - [2012-14]has 2 minor vertical 0.010" cracks along the top edge.

Reinforced Concrete Pile Cap/Footing 07/14/2016 24 LF 24 0 0 0220 Underwater

Reinforced Concrete Pier Cap 07/14/2016 88 LF 85 3 0 0234 Underwater


Notes: Pier # 1 - [2012-14] has 1 vertical 0.010" crack on the north side of the cap and a horizontal crack at the west end with delaminatedconcrete.

Pier # 2 - [2012-14] has 1 vertical 0.010" crack on the south side of the cap.

Strip Seal Expansion Joint 07/14/2016 88 LF 88 0 0 0300 Underwater


Notes: South End - [2012-14] OK

North End - [2012-14] OK

Pourable Joint Seal 07/14/2016 180 LF 150 30 0 0301 Underwater


Notes: [2014] There are 30 linear feet of joint material that has lost adhesion.

Elastomeric Bearing 07/14/2016 25 EA 25 0 0 0310 Underwater


Notes: The elastomeric bearing pads are located along both abutments, along both sides of pier 1 and along the south side of pier 2.

South Abutment Bearings - [2012-14] OK, the elastomeric bearings show little or no deterioration. Bearings 1, 2, 4 & 5 are set ahead 1/2 of aninch bearing 3 is set ahead 1 inch.

Pier # 1 Bearings - [2012-14] OK, the elastomeric bearings show little or no deterioration.

Pier # 2 Bearings - [2012-14] OK, the elastomeric bearings show little or no deterioration.

North Abutment Bearings - [2012-14] OK, the elastomeric bearings show little or no deterioration.

Fixed Bearing 07/14/2016 5 EA 5 0 0 0313 Underwater


Notes: The fixed bearings are located along the north side of pier 2.

Pier # 2 Bearings - [2012-14] OK, the fixed bearings show little or no deterioration.

Reinforced Concrete Approach Slab 07/14/2016 1520 SF 760 760 0 0321 Underwater


Notes: [2016] Migrator assumed an approach slab length of 20FT and used the inventory quantity of 38FT for the width.South Approach Slab - [2012-14] has sealed random, longitudinal cracks and transverse cracks near the center. There are 3 small 2" X 6"patched areas along he south bound lane.

North Approach Slab - [2012-14] has sealed random, longitudinal cracks and transverse cracks near the center. There is a small 4" X 8" spalledarea along he south bound lane near the center line.

Reinforced Concrete Bridge Railing 07/14/2016 332 LF 282 50 0 0331 Underwater


Notes: [2012-14] There are 2 to 3 vertical 0.010" cracks per railing section with some leaching.

East Railing - [2012] there is minor spalling along the bottom of sections 4, 8 & 9 with moderate spalling along the bottom of section 7 countingfrom the south end.

Critical Deficiencies or Safety Hazards 07/14/2016 1 EA 1 0 0 0800 Underwater


Notes: [2012-14] No critical findings were observed at the time of inspection.

Concrete Decks - Cracking & Sealing 07/14/2016 0 LF 0 0 0 0810 Underwater


Notes: [2012-14] Approximately 1400 linear feet of deck cracks were sealed in 2008.


QTYCS 1

QTYCS 2

QTYCS 3

QTYCS 4


REPORT TYPE

Approach Relief Joint 07/14/2016 27 LF 0 27 0 0816 Underwater


Notes: These are the E8S joint located at the roadway end of South approach slabs.[2014] Joint has lost all adhesion.South End E-eight Joint - [2012] 0.75" settlement from mainline to approach panel. During 2008 inspection the joint opening measured 1 3/4inches wide at both ends and 4 linear feet of the joint material has lost adhesion. During 2006 inspection the joint opening measured 2 incheswide at both ends and approximately 4 linear feet of the joint material has lost adhesion. During 2004 inspection the joint opening measured 21/2 inches wide across the entire length of the joint.

North End E-eight Joint - during the 2008 inspection it was noted that the joint has been removed.

Concrete Shear Cracking 07/14/2016 1 EA 1 0 0 0883 Underwater


Notes: [2012-14] No shear cracking observed.

Scour 07/14/2016 1 EA 0 0 1 0885 Underwater


Notes: R - Scour critical. Monitoring required.[2014] Top of South pier footing is exposed. The East side is exposed one foot.[2012] Underwater inspection completed on 9/12/12 see attached files.[2010] Bridge was sonor sounded 9-25-10 during high water and findings were OK. Results are in bridge folder.[2016] Underwater Inspection - The footing at the downstream column of Pier 2 was exposed around the full perimeter with up to 1.6 feet ofvertical face exposure. The footing at the middle column of Pier 2 was exposed along the north and west faces with up to 2 feet of vertical faceexposure. The footing at the upstream column of Pier 2 was exposed along the north, east, and west faces with up to 1.9 feet of vertical faceexposure.

Other Bridge Signing 07/14/2016 1 EA 0 0 1 0891 Underwater


Notes: Signs Required: [2012-4] Horizontal Clearance Clearance markers are needed on NE & SW corners.

Slopes & Slope Protection 07/14/2016 1 EA 1 0 0 0892 Underwater


Notes: [2012-14] The slopes at the abutments and wingwalls are in stable condition at the time of inspection.

Guardrail 07/14/2016 1 EA 1 0 0 0893 Underwater


Notes: [2012-14] All guardrail sections were intact at the time of inspection.

Deck & Approach Drainage 07/14/2016 1 EA 1 0 0 0894 Underwater


Notes: [2012-14] Catch basins are located at the southwest, northwest & northeast corners of the approach slabs, all 3 were in good conditionat the time of inspection.

Miscellaneous Items 07/14/2016 1 EA 1 0 0 0899 Underwater


Notes: [2012-14] There are two 4" diameter utility pipes penetrating through both parapet wall behind the west fascia girders and hung beneaththe deck between girders 1 & 2. There is a minor bend to the pipe. Phone line conduit has broke from hangers and is resting on pier caps.

There is a scour monitoring sign mounted along the south side of pier 1 near the west end.

Protected Species 07/14/2016 1 EA 0 1 0 0900 Underwater


Notes: [2016] Migrator determined the presence of swallows on this structure based on data in the inventory or comments in thegeneral/miscellaneous notes.

General Notes: This structure has a scour code rating of "R" CRITICAL MONITOR.All girders, columns and bearings are numbered from the west and all spans and piers are numbered from the south.Bridge was inspected using under deck snooper truck in 2004.DNR Water level monitoring system at SW corner.[2012]Yes swallow nests.


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

Inventory Notes: Consider removing Bridge from the Underwater inspection schedule due to lower water depths do to opening the dam locateddownstream.

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] Slight scouring around South pier footing. Top of footing is exposed.

Photo 2 - View of South Abutment, looking south.

Photo 3 - View of Pier 2, looking south.

Pictures

Pictures

Photo 4 - View of Pier 2, looking north.

BRIDGE # LAKE SHADY AVE over MID FK ZUMBRO R · NBR ELEMENT NAME INSP. DATE QUANTITY QTY CS 1 QTY...

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