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2017 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: 31514 7 AVE over MISSISSIPPI RIVER District 1 Itasca Grand Rapids 09/28/2016 Ladder, Probing Rod, Chain Drag Stromberg, Dan Dan Stromberg City or Municipal Highway Agency Owner: Minnesota STATE:

BRIDGE # 7 AVE over MISSISSIPPI RIVER...Contractor Job Number: 9687 RECOMMENDATIONS REPORT SUMMARY UNDERWATER INSPECTION The substructure units inspected at Bridge No. 31514, Piers

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Page 1: BRIDGE # 7 AVE over MISSISSIPPI RIVER...Contractor Job Number: 9687 RECOMMENDATIONS REPORT SUMMARY UNDERWATER INSPECTION The substructure units inspected at Bridge No. 31514, Piers

2017 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:

31514

7 AVE over MISSISSIPPI RIVER

District 1 Itasca Grand Rapids

09/28/2016

Ladder, Probing Rod, Chain Drag

Stromberg, Dan

Dan Stromberg

City or Municipal Highway AgencyOwner:

MinnesotaSTATE:

Page 2: BRIDGE # 7 AVE over MISSISSIPPI RIVER...Contractor Job Number: 9687 RECOMMENDATIONS REPORT SUMMARY UNDERWATER INSPECTION The substructure units inspected at Bridge No. 31514, Piers

UNDERWATER SUMMARY 3

UNDERWATER INSPECTION 4

UNDERWATER INSPECTION PROCEDURES 6

STRUCTURE INVENTORY 7

ELEMENTS 8

PICTURES 13

BRIDGE 31514 UNDERWATER INSPECTION DRAWINGS2016

16

TABLE OF CONTENTS

PAGE NUMBER

Page 3: BRIDGE # 7 AVE over MISSISSIPPI RIVER...Contractor Job Number: 9687 RECOMMENDATIONS REPORT SUMMARY UNDERWATER INSPECTION The substructure units inspected at Bridge No. 31514, Piers

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. 31514, Piers 1 and 2, were generally in good condition with no defects of structural significance observed below water. The concrete was relatively smooth and sound with no significant deterioration, and just some light scaling located from the waterline to the channel bottom with typical penetrations of 1/8 inch. Footing and original timber formwork was observed to be exposed and/or protruding from the channel bottom on the channel side of both piers. The top of footing at both piers was typically exposed in and around the footing edges, with sand on top of the footing closer to the pier shafts. The maximum vertical exposure of the footings has increased slightly compared to what was last found in 2012, with maximums of 3.5 feet and 1 feet at Piers 1 and 2, respectively, indicating that some minor channel bottom degradation has occurred.

A. The channel bottom material consisted of sand with scattered 1 foot diameter and smaller rocks allowing a 2 inch maximum probe rod penetration. Armoring, consisting of 2 foot diameter rocks was observed at the upstream and downstream noses of the piers.B. Overall the concrete was smooth and sound with no significant deterioration.C. Light scaling was observed from the waterline to the channel bottom with a typical penetration of 1/8 inch.D. Footing and formwork was exposed 6 feet out from the west face of Pier 2, with the top at 6 feet below waterline. The footing (and formwork) was exposed from 8 feet downstream of the upstream nose to 6 feet from the downstream end of Pier 2. The maximum vertical exposure was 1 foot.E. Footing and some formwork (mostly towards downstream) was observed 6 feet out from the east face of Pier 1 from center of upstream nose to 5 feet upstream of the downstream nose. Top of footing was located 7 feet below waterline and maximum vertical exposure of 3.5 feet was located around the middle of the pier. F. For approximately 8 feet upstream of middle of pier there was slop concrete sticking out up to 3 feet from the footing face. Immediately, downstream of the slop concrete, there was a small cavity at the interface of the footing and seal below. The cavity was approximately 3 feet long by 3 inches high with up to 12 inches of penetration. G. Seal was exposed from upstream corner of footing to approximately 3 feet downstream of the middle of the pier with maximum vertical exposure of 1.5 feet at upstream quarter point of pier. Seal surfaces were very irregular due to section loss and corrugations from being formed with sheeting.

INSPECTION FINDINGS

Page 3 of 17

Page 4: BRIDGE # 7 AVE over MISSISSIPPI RIVER...Contractor Job Number: 9687 RECOMMENDATIONS REPORT SUMMARY UNDERWATER INSPECTION The substructure units inspected at Bridge No. 31514, Piers

The top of the concrete parapet at the downstream end of Pier 2.Water Level Reference:

WATERLINE DATUM

Waterline Elevation (feet):

The waterline was located approximately 29.0 feet below the reference.Description:

71.0 feet

4.

Piers 1 and 2Substructure(s) Inspected:

SUBSTRUCTURE INSPECTION DATA

General Shape:

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

The piers each consist of an oblong rectangular shaft with rounded noses, which is founded on a rectangular reinforced concrete, pile supported, footing.

Code:Item 62: Culvert:

7

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:

7Code:

District 1District:

7 AVE

County:

The superstructure consists of precast concrete beams (3 spans) supporting a reinforced concrete deck. The substructure consists of two reinforced concrete abutments and two reinforced concrete piers designated Piers 1 and 2 from west to east.

Bridge Description:

031 - Itasca

Facility Carried:

BRIDGE DATA1.

UNDERWATER INSPECTION

Bridge #:

MISSISSIPPI RIVERFeature Intersected:

31514

Underwater Visibility (feet):

Sunny, 60°FWeather Conditions:

5.0 feet

3.

1 ft/secWaterway Velocity (ft/sec):

09/28/2016

Professional Engineer/Team Leader:

INSPECTION DATA2.

Daniel G. Stromberg

Date of Underwater Inspection:

Daniel G. StrombergInspection Diver:

Page 4 of 17

Page 5: BRIDGE # 7 AVE over MISSISSIPPI RIVER...Contractor Job Number: 9687 RECOMMENDATIONS REPORT SUMMARY UNDERWATER INSPECTION The substructure units inspected at Bridge No. 31514, Piers

Scour 1885 EA 1

220 Reinforced Concrete Footing 49 LF 49

STRUCTURAL ELEMENT CONDITION RATING

Conditions

6.

I

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

210

CS3 CS4

Reinforced Concrete Pier Wall 6868 LF

CS2ELEM # Unit CS1Element Description Quantity

Page 5 of 17

Page 6: BRIDGE # 7 AVE over MISSISSIPPI RIVER...Contractor Job Number: 9687 RECOMMENDATIONS REPORT SUMMARY UNDERWATER INSPECTION The substructure units inspected at Bridge No. 31514, Piers

The routine underwater inspection of Bridge 31514 (7 Ave over Mississippi River) was completed on September 28, 2016. The underwater inspection was conducted from the shore. The inspection was conducted by a team consisting of a Professional Engineer Diver with a valid MnDOT Team Leader certification, a backup diver and 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 reinforced concrete piers. According to structure inventory, the inspected substructure units are founded on rectangular reinforced concrete footings supported by concrete piles. Inspection procedures followed FHWA guidance and the MnDOT Bridge and Structure Inspection Program Manual with channel bottom probing to search for foundations. The maximum 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

UNDERWATER INSPECTION

Page 6 of 17

Page 7: BRIDGE # 7 AVE over MISSISSIPPI RIVER...Contractor Job Number: 9687 RECOMMENDATIONS REPORT SUMMARY UNDERWATER INSPECTION The substructure units inspected at Bridge No. 31514, Piers

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 3 - FTG PILE

Pinned Asbly.

09/28/2016

Barrel Length

263.6 ft. Navigation Control

Waterway Opening (sf.) 1767Structure Length

ft. Year Painted

0 - No nav. control on waterwayDeck Width (Out-to-Out) 66.3

+ P A I N T +

APPR: 0 TOTAL:5 - Not eligible

MAIN: 3

Main Span Length 86.2 ft.Drainage Area (sq. mi.) 3370.0

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

N - NOT REQUIRED+ M I S C.

Appr. Span Type Structure Flared

GR Termini N - NOT REQUIRED

Appr. Guardrail

Main Span Type 5 - Prestress or Precast Median Width On Bridge

ft. Bridge Railing 1 - MEETS STANDARDS

N - NOT REQUIRED

Main Span Design 01 - Beam Span

ft. GR Transition

Skew 35 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 4/8/200313702 sq. ft. Traffic

ft. 50B. Rt 6.00Sidewalk Width 50A. Lt 6.00

Roadway Area (Curb-to-Curb)

Posted Load 0 - Not Required

PostingStructure Area (Out-to-Out) 17477 sq. ft.

DBL:VEH: SEMI:

Rt 17 ARail Type Lt 17 C N - N/AN - N/A B N - N/A

N - Not Applicable Overweight Permit CodesCurb Height Lt

ft. Horizontal 0 - Not Required

0.50 ft. Vertical0.50 ft. Rt

Wear Surf Install Year 2001

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

I - LOW RISK Year 2006Primer Type MN Scour Code

Painted Area

Unsound Paint % Nav. Clr. (ft.)

!

Deck Material 1 - Concrete Cast-in-Place 0.0Wear Surf Type 4 - Low Slump Concrete

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 35.2

51.9Deck Rebars Install Year

Deck Rebars

Finish TypeWear Course/Fill Depth 0.16 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

47 ° 13

Inspector Name Stromberg, Dan

Latitude Control Section (TH Only) Status' 50.04 ''

2 - 2-way traffic

Routine Inspection Frequency 24

Sect., Twp., Range

0.2 MI S OF JCT TH 2 Level of Service 1 - MAINLINE

- 25W Roadway Type21 - 055N

Detour Length 1.0 mi.R A T I N G S +

Custodian 04 - City or Municipal Highway Agency 2

Owner 04 - City or Municipal Highway Agency

Deck 7 Unsound Deck %

C O N D I T I O N° 31 '

A - Open

Longitude 93 001+00.220 + N B I 4.52 '' Reference Point

Crew

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

Agency Br. No. 158

District 01

Bridge Match ID (TIS) 0 Userkey

7 AVE over MISSISSIPPI RIVER

Minnesota Structure Inventory Report

Bridge ID: 31514

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

Date: 01/04/2017

Sufficiency Rating 88.4Roadway Name or Description

119

City Grand Rapids

Routine Inspection Date 11/23/2015

Desc. Loc.

Township 7 AVE

Number

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

NRoute Sys 05 - MSASCounty 031 - Itasca Functionally Obsolete

Lanes

Waterway Adequacy 9Max. Vert. Clear.

ft.Legislative District 03Bft.Potential ABC 2 - N/A ft.

ft.On - Off System Roadway Width 52.00 ft.

Vertical Clearance ft.1 - ON

Underclearances N

Service On 5 - Highway-pedestrian Appr. Surface Width+ S A F E T Y F E A T U R E S +

5 - Waterway Bridge Roadway Width 52.0

68.0 ft.

Service Under

ft.

51.9 ft. Approach Alignment 8Horizontal Clear.

ft.

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

HCADT ADTT7

Year Built 1975

MN Year Reconstructed Functional Class

%Channel 7

Substructure

0Superstructure 7

ON 4 UNDER

998 YEAR 2008BMU Agreement ADT

Structure Evaluation 7If Divided

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

7/1/1976Deck Geometry 4

NB-EB SB-WBDate Opened to Traffic

+ R D W Y

FHWA Year Reconstructed

MN Temporary Status

16 - Urban - Minor ArterialCulvert N

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

Page 7 of 17

Page 8: BRIDGE # 7 AVE over MISSISSIPPI RIVER...Contractor Job Number: 9687 RECOMMENDATIONS REPORT SUMMARY UNDERWATER INSPECTION The substructure units inspected at Bridge No. 31514, Piers

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:

Itasca

Grand Rapids

055N21 25W

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

7 7 7 7 N

8 9

0 - Not Required

0 - Not Required

0 - Not Required

N - Not Applicable

I - LOW RISK

0.2 MI S OF JCT TH 2

05 - MSAS 119 001+00.220

263.6

66.3

13702 sq. ft. / 2%

sq. ft. / %

N/A

A - Open

ft.

ft.

Postings:List:

MINNESOTA BRIDGE INSPECTION REPORT

01/16/2017

Inspector: CO Bridge

BRIDGE 31514 7 AVE OVER MISSISSIPPI RIVER

Unofficial Structurally Deficient N

NUnofficial Functionally Obsolete

Unofficial Sufficiency Rating 88.4

ELEMNBR ELEMENT NAME INSP. DATE QUANTITY

QTYCS 1

QTYCS 2

QTYCS 3

QTYCS 4REPORT TYPE

Reinforced Concrete Deck 01/04/2017 17477 SF 15729 0 1748 012 Underwater

17477 SF 15729 0 1748 0Migrated Values

Notes: 2015 - This condition is monitored during routine inspections. No appreciable progression has been documented.2014 - No change from 2013 condition. See photos.2013 - No change from 2012 condition. See photos.2012 - No change from 2011 condition.2011 - Cracks and efflourescence noted in all spans and all bays but seems to be concentrated in eastern three bays and in south span.Transverse cracks in bays are spaced regularly at about 8 feet.2010 - Map cracks and efflorescence present in S span, mainly in eastern three bays.

510 - Wearing Surfaces 13702 SF 13428 0 274 0

Notes: Low Slump Overlay with Uncoated Rebar Notes: 2015 - Good condition. Very little sign of delamination. Some minor cracking as perprevious years' inspections.2014 - No apparent change from 2013 condition. Minor cracking noted. Consider chain dragging in future inspections.2013 - No change from 2012 condition.2012 - Minor cracking continues.2011 - Some minor cracking noted in northbound shoulder and edge of lane. No delaminations, potholes or spalls present.2010 - No change from 2009 condition.

Underwater 01/04/2017

13702 SF 13428 0 274 0Migrated Values

Prestressed Concrete OpenGirder/Beam

01/04/2017 1548 LF 1548 0 0 0109 Underwater

1548 LF 1548 0 0 0Migrated Values

Notes: 2015 - No change from 2014 condition.2014 - No change from 2013 condition. Conduit is anchored to east fascia beam. Not advisable to have drilled anchors into the PCB's. Shouldnotify utility owner to relocate and repair holes in beam.2013 - No change from 2012 condition except that damp spots were noted at top flanges of beams and adjacent underside of slab areas onwestern three beams at the north abutment.2012 - No change from 2011 condition.2011 - No change from 2010 condition.2010 - No change from 2009 condition.

Reinforced Concrete Pier Wall 01/04/2017 68 LF 68 0 0 0210 Underwater

68 LF 68 0 0 0Migrated Values

Notes: 2015 - Some discoloration and staining but overall good condition.2014 - No change from 2013 condition. High water at time of inspection.2013 - No change from 2012 condition.2012 - No chage from 2011 condition.2011 - No change from 2010 condition. Low water allowed hands on inspection of most of pier.2010 - No change from 2009 condition.

Page 8 of 17

Page 9: BRIDGE # 7 AVE over MISSISSIPPI RIVER...Contractor Job Number: 9687 RECOMMENDATIONS REPORT SUMMARY UNDERWATER INSPECTION The substructure units inspected at Bridge No. 31514, Piers

Reinforced Concrete Abutment 01/04/2017 202 LF 202 0 0 0215 Underwater

202 LF 202 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).2015 - Good condition. Minor crack in south abutment back wall from hole for conduit to top of wall.2014 - No change from 2013 condition.2013 - No change from 2012 condition.2012 - No change from 2011 condition.2011 - No change from 2010 condition.2010 - No change from 2009 condition.

Wingwall notes: 2015 - Moved all wings to CS 1 as it is a more appropriate rating.2014 - No change from 2013 condition.2013 - No change from 2012 condition.2012 - No change from 2011 condition.2011 - No change from 2010 condition.2010 - No change from 2009 condition.

Reinforced Concrete Pier Cap 01/04/2017 150 LF 150 0 0 0234 Underwater

150 LF 150 0 0 0Migrated Values

Notes: 2015 - Pier caps in good condition visually. No access to pier caps for this inspection.2014 - No change from 2013 condition.2013 - No change from 2012 condition.2012 - No change from 2011 condition.2011 - No change from 2010 condition.2010 - No change from 2009 condition.

Pourable Joint Seal 01/04/2017 230 LF 57 173 0 0301 Underwater

230 LF 57 173 0 0Migrated Values

Notes: 2015 - Most sealant is failed or missing. Moved to CS 1 & 2 since spalling, while present, is relatively minor.2014 - Most joints are failed as per 2013. Continue to maintain as needed.2013 - Most poured joints are failed.2012 - Joint is failed at each end of bridge.2011 - Joint is failed at each end of bridge.2010 - Abutment joints leaking - abutment backwalls wet.

Movable Bearing 01/04/2017 18 EA 12 6 0 0311 Underwater

18 EA 12 6 0 0Migrated Values

Notes: 2015 - There are 6 at each abutment and 6 at Pier 1 (south pier). Moved bearings at south abutment to CS 2 due to presence of rustand debris that may inhibit movement. No access to pier bearings during this inspection.2014 - No change from 2013 condition.2013 - Light rust noted on expansion bearings at north south abutment. CS 1 still appropriate.2012 - No change from 2011 condition.2011 - No change from 2010 condition.2010 - No change from 2009 condition.

Fixed Bearing 01/04/2017 18 EA 0 18 0 0313 Underwater

18 EA 0 18 0 0Migrated Values

Notes: 2015 - There are 12 at Pier 2 (north pier) and 6 at Pier 1. No access to pier bearings for this inspection.2014 - No change from 2013 condition. Light rust/corrosion forming.2013 - No change from 2012 condition.2012 - No change from 2011 condition.2011 - No change from 2010 condition.2010 - No change from 2009 condition.

Reinforced Concrete Approach Slab 01/04/2017 2720 SF 2720 0 0 0321 Underwater

2720 SF 2720 0 0 0Migrated Values

Notes: [2016] Migrator assumed an approach slab length of 20FT and used the inventory quantity of 68FT for the width.2015 - East side of northbound panels replaced in 2015 during conduit system install. Changed to CS 1 to more accurately reflect condition.2014 - No change from 2013 Condition2013 - No change from 2012 condition.2012 - No change from 2011 condition - adjusted condition state to a more appropriate rating.2011 - No change from 20102010 - No change from 2009 condition.

ELEMNBR ELEMENT NAME INSP. DATE QUANTITY

QTYCS 1

QTYCS 2

QTYCS 3

QTYCS 4

BRIDGE 31514 7 AVE OVER MISSISSIPPI RIVER

REPORT TYPE

Page 9 of 17

Page 10: BRIDGE # 7 AVE over MISSISSIPPI RIVER...Contractor Job Number: 9687 RECOMMENDATIONS REPORT SUMMARY UNDERWATER INSPECTION The substructure units inspected at Bridge No. 31514, Piers

Metal Bridge Railing 01/04/2017 526 LF 526 0 0 0330 Underwater

526 LF 526 0 0 0Migrated Values

Notes: [2016] Migrator assumed concrete/metal combination type rail.2015 - Minor scaling and pop outs & discoloration as per previous inspections. CS 1 is most appropriate for this element at this time.2014 - No change from 2013 condition. Scaling and pop outs noted.2013 - No change from 2012 condition.2012 - No change from 2011 condition.2011 - Concrete parapet is scaled/pitted on traffic side.2010 - No change from 2009 condition.

515 - Steel Protective Coating 999 SF 999 0 0 0

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

Underwater 01/04/2017

999 SF 999 0 0 0Migrated Values

Reinforced Concrete Bridge Railing 01/04/2017 526 LF 526 0 0 0331 Underwater

526 LF 526 0 0 0Migrated Values

Notes: [2016] Migrator assumed concrete/metal combination type rail.2015 - Minor scaling and pop outs & discoloration as per previous inspections. CS 1 is most appropriate for this element at this time.2014 - No change from 2013 condition. Scaling and pop outs noted.2013 - No change from 2012 condition.2012 - No change from 2011 condition.2011 - Concrete parapet is scaled/pitted on traffic side.2010 - No change from 2009 condition.

Critical Deficiencies or Safety Hazards 01/04/2017 1 EA 1 0 0 0800 Underwater

1 EA 1 0 0 0Migrated Values

Notes: NO CRITICAL FINDINGS OBSERVED DURING THE LAST INSPECTION.

Concrete Decks - Cracking & Sealing 01/04/2017 0 LF 0 0 0 0810 Underwater

0 LF 0 0 0 0Migrated Values

Notes: 2015 - CS 2 still appropriate.2014 - No change from 2013 condition.2013 - No change from 2012 condition.2012 - No change from 2011 condition.2011 - Unsealed cracks of moderate density.

Bituminous Approach Roadway 01/04/2017 2 EA 0 2 0 0822 Underwater

2 EA 0 2 0 0Migrated Values

Notes: 2015 - Element added this year to document condition of bituminous approaches on each end.

Concrete Shear Cracking 01/04/2017 1 EA 1 0 0 0883 Underwater

1 EA 1 0 0 0Migrated Values

Notes: No shear cracks are evident.

Slopes & Slope Protection 01/04/2017 1 EA 0 1 0 0892 Underwater

1 EA 0 1 0 0Migrated Values

Notes: 2015 - CS 2 still appropriate. Modular wall at north abutment was repaired this year.2014 - No change from 2013 condition.2013 - No change from 2012 condition.2012 - No change from 2011 condition.2011 - No change from 2010 condition. North slope altered to accommodate a new bike trail.SOME SLOPE EROSION ON S.E. CORNER AT TOP OF SLOPE.[2010] No change from 2009 condition.

ELEMNBR ELEMENT NAME INSP. DATE QUANTITY

QTYCS 1

QTYCS 2

QTYCS 3

QTYCS 4

BRIDGE 31514 7 AVE OVER MISSISSIPPI RIVER

REPORT TYPE

Page 10 of 17

Page 11: BRIDGE # 7 AVE over MISSISSIPPI RIVER...Contractor Job Number: 9687 RECOMMENDATIONS REPORT SUMMARY UNDERWATER INSPECTION The substructure units inspected at Bridge No. 31514, Piers

Deck & Approach Drainage 01/04/2017 1 EA 0 1 0 0894 Underwater

1 EA 0 1 0 0Migrated Values

Notes: 2015 - Two deck drains on east side are plugged. West side drains are clear. Catch basin at south approach panel functioning well.2014 - No change from 2013 condition.2013 - No change from 2012 condition.2012- No change from 2011 condition.2011 - No change from 2010 condition.2010 - No change from 2009 condition.

Sidewalk, Curb, & Median 01/04/2017 1 EA 1 0 0 0895 Underwater

1 EA 1 0 0 0Migrated Values

Notes: 2015 - CS 1 still appropriate. New sidewalks off each end of the bridge on the east side. Appear to be settling already. New sealantbetween end of deck and new sidewalk showing signs of failure, loss of adhesion.2014 - No change from 2013 condition.2013 - No change from 2012 condition. Transverse cracks are spaced at about 6 to 10 feet OC.2012 - No change from 2011 condition.2011 - No change from 2010 condition.2010 - No change from 2009 condition.

Miscellaneous Items 01/04/2017 6 EA 6 0 0 0899 Underwater

6 EA 6 0 0 0Migrated Values

Notes: 2015 - Added this element for bridge lighting and conduits etc. Good condition, some light rust etc.

Protected Species 01/04/2017 1 EA 1 0 0 0900 Underwater

1 EA 1 0 0 0Migrated Values

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

General Notes: 1998 - Deck delamination continues to progress. Erosion problem noted in 1997 has been corrected with rock gabions 2001 -Bridge rehab project constructed in 2001 including: Mill & overlay deck; r/c approach slabs; railings cleaned & painted2002 - rock gabion slope protection on S bank; new expansion joints at abutment on deck; moveable bearings cleaned &treated.2005 - FIBER OPTIC CONDUIT ALONG E. FASCIA GIRDER HAS BROKEN LOOSE FROM SUPPORT CLAMPS.ALTERNATE MEANS OF ATTACHMENT SHOULD BE USED (AVOID EXP. ANCHORS INTO PRESTRESSED BEAMS).2006 - SOUNDED BOTH PEIR WALLS W/ HAMMER 2006. NO DETERIORATION NOTED.2006 - RANDOM MAP CRACKS NOTED IN OVERLAY. MOSTLY CENTER LANES.2007 - Sounded overlay at pier joints - OK. Continue to monitor.2008 - Little change in condition from 2007 inspection.2009 - Conduit disjointed at N abutment.2011 - Bridge in overall good condition. Bike trail added beneath north abutment slope.2012 - No real change from 2011 condition other than the overlay shows signs of continuing cracking.2013 - No significant change from the 2012 condition. Most floor drains along the east gutter line were plugged andnon-functioning at the time of the inspection. Slight settlement of sidewalk off north end of bridge.2014 - No significant changes from the 2013 inspection. 2014 inspection was done in December. Little or no snow on theground. Snow did not appreciably effect inspection. All major elements were visible.2015 - New conduit system installed in fall of 2015 along easternmost beam bay. Bridge was inspected in November aftersignificant rainfall. Heavy joint leakage was evident at south abutment at joint at top of parapet wall, causing water to pool onabutment seats adjacent to bearings. Contributing to corrosion of bearings. Some leakage noted at north abutment but not assevere. Removed scour smart flag from report this year since scour code is "I-Low Risk". Underwater inspection was done in2012. No undermining or scour was reported. Vertical exposure of Pier 1 footing was 3 feet maximum, vertical exposure ofPier 2 footing was 1 foot maximum. Inspection from ground only in 2015 (no snooper).

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:

ELEMNBR ELEMENT NAME INSP. DATE QUANTITY

QTYCS 1

QTYCS 2

QTYCS 3

QTYCS 4

BRIDGE 31514 7 AVE OVER MISSISSIPPI RIVER

REPORT TYPE

Page 11 of 17

Page 12: BRIDGE # 7 AVE over MISSISSIPPI RIVER...Contractor Job Number: 9687 RECOMMENDATIONS REPORT SUMMARY UNDERWATER INSPECTION The substructure units inspected at Bridge No. 31514, Piers

ELEMNBR ELEMENT NAME INSP. DATE QUANTITY

QTYCS 1

QTYCS 2

QTYCS 3

QTYCS 4

BRIDGE 31514 7 AVE OVER MISSISSIPPI RIVER

REPORT TYPE

Inspector's Signature Reviewer's Signature

Inventory Notes:

62. Culvert NBI:

71. Waterway Adeq NBI:

72. Appr RoadwayAlignment NBI:

Page 12 of 17

Page 13: BRIDGE # 7 AVE over MISSISSIPPI RIVER...Contractor Job Number: 9687 RECOMMENDATIONS REPORT SUMMARY UNDERWATER INSPECTION The substructure units inspected at Bridge No. 31514, Piers

Photo 1 - Overall View of Downstream Fascia, Looking Northwest

Photo 2 - Overall View of Upstream Fascia, Looking Southwest

Pictures

Page 13 of 17

Page 14: BRIDGE # 7 AVE over MISSISSIPPI RIVER...Contractor Job Number: 9687 RECOMMENDATIONS REPORT SUMMARY UNDERWATER INSPECTION The substructure units inspected at Bridge No. 31514, Piers

Pictures

Photo 3 - View of Pier 1, Looking Northeast

Photo 4 - View of Pier 2, Looking Southwest

Page 14 of 17

Page 15: BRIDGE # 7 AVE over MISSISSIPPI RIVER...Contractor Job Number: 9687 RECOMMENDATIONS REPORT SUMMARY UNDERWATER INSPECTION The substructure units inspected at Bridge No. 31514, Piers

Pictures

Photo 5 - View of Exposed Footing and Formwork at Pier 1, Looking West

Photo 6 - View of Exposed Footing and Formwork at Pier 1, Looking West

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Page 16: BRIDGE # 7 AVE over MISSISSIPPI RIVER...Contractor Job Number: 9687 RECOMMENDATIONS REPORT SUMMARY UNDERWATER INSPECTION The substructure units inspected at Bridge No. 31514, Piers

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Page 17: BRIDGE # 7 AVE over MISSISSIPPI RIVER...Contractor Job Number: 9687 RECOMMENDATIONS REPORT SUMMARY UNDERWATER INSPECTION The substructure units inspected at Bridge No. 31514, Piers

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