bridge # csah 10 over blue earth river€¦ · county 007 - blue earth route sys 04 - csah...

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:

7150

CSAH 10 over BLUE EARTH RIVER

District 7 Blue Earth VERNON CENTER

12/02/2016

Full Body Harness, A-62, Non-destructive TestingEquipment - Ultasonic Flaw Detector and Search Unit

Forsyth, Roy

Roy Forsyth

County Highway AgencyOwner:

MinnesotaSTATE:

UNDERWATER SUMMARY 3

UNDERWATER INSPECTION 4

UNDERWATER INSPECTION PROCEDURES 6

STRUCTURE INVENTORY 7

ELEMENTS 8

PICTURES 12

DRAWINGS 16

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. 7150, Piers 1 and 2, were found to be in good condition with no structurally significant defects observed. Both piers exhibited partial footing exposure with up to 1 foot of vertical face exposure. The channel bottom appeared stable with no appreciable changes observed since the previous inspection.

(A) The channel bottom consisted of gravel overlaid with fine silty sand with 2 inches of probe rod penetration.(B) The channel bottom consisted of fine silty sand with 3 inches of probe rod penetration.(C) The top of the footing was exposed from the upstream nose to the upstream quarter point along the south face of Pier 1 with 1 foot of maximum vertical face exposure detected.(D) An area of section loss, 6 inches wide by 1.5 feet high with a penetration of up to 1/4 inch, was observed at 1.5 feet below the waterline on the downstream nose of Pier 1.(E) The footing was exposed along the upstream half of the north face of Pier 2 with 3 inches of maximum vertical face exposure detected.(F) The South Abutment was well protected with heavy riprap and large pieces of concrete.(G) A band of light to moderate scaling was observed across the downstream end from 3 feet to 2 foot below the waterline with penetrations up to 1/2 inch deep.(H) Up to 1.5 foot diameter riprap was protecting the north embankment along the north face of Pier 1.

INSPECTION FINDINGS

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WATERLINE DATUM4.

7.1

Water Level Reference:

981.2Waterline Elevation (feet):

Top of diaphram wall at Pier 1.

Substructure(s) Inspected:

SUBSTRUCTURE INSPECTION DATA3.

Piers 1 and 2

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

The piers consist of two elongated hexagonal columns supporting a rectangular pier cap. The pier columns are connected by an 8 foot tall concrete diaphragm that extends up from the top of the footing. The columns are supported by a rectangular footing founded on steel H-piles.

General Shape:

Code:Item 61: Channel and Channel Protection:

7

6

Code:Item 62: Culvert:

5.

The waterline was located 2.7 ft below the reference.Description:

NBIS CODING INFORMATION

Code:Item 60: Substructure:

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

1

District:

CSAH 10Facility Carried:

District 7

Bridge Description:

007 - Blue EarthCounty:

BRIDGE DATA1.


Bridge #:

BLUE EARTH RIVERFeature Intersected:

7150

Weather Conditions:

12/02/2016Date of Underwater Inspection:

Cloudy, 30F

Waterway Velocity (ft/sec):

1Underwater Visibility (feet):

INSPECTION DATA2.

The bridge superstructure consists of three spans of multiple steel beams supporting a reinforced concrete deck. The superstructure is supported by two reinforced concrete abutments and two reinforced concrete piers. The pier footings are founded on steel H-piles, while the abutments are founded on treated timber piles. The piers are numbered 1 and 2 starting from the north end of the bridge.

Professional Engineer/Team Leader:

Marc SternInspection Diver:

Roy Forsyth

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885 Scour 11 EA

220

1

2EAReinforced concret pile cap/footing 2

STRUCTURAL ELEMENT CONDITION RATING6.

No (Mark your selection with an X)

Item 113: Scour Critical Bridge: Code:

Y 48 12/2016Item 92B: Underwater Inspection: Code:

Yes X

R

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

CS4CS3CS1 CS2

EA 34205 Reinforced concrete columns

Conditions

Quantity UnitElement DescriptionELEM #

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The routine underwater inspection of Bridge 7150 (CSAH 10 over the Blue Earth River) was completed on December 2, 2016.The underwater inspection was conducted from shore. The inspection was conducted by a team consisting of a PE-Diverwith a valid MnDOT Team leader certification, a backup diver and a dive tender. The inspection utilized commercial diveequipment and techniques (SSA and/or SCUBA) in accordance with OSHA regulations. Profiles were taken along the upstreamand downstream faces of the bridge and around the periphery of substructure units to determine the presence, location andarea of scour. The bridge elements inspected consisted of 2 concrete piers and 2 concrete footings. According to the bridge inventoryor design drawings, Piers 1 and 2 were founded on piles. Inspection procedures followed FHWA guidance and the MnDOT Bridge and Structure Inspection Program Manual with channel bottom probing to search for bottom 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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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

3 - FTG PILE

09/26/2012

Underwater 60Culvert Type 3 - FTG PILE

Pinned Asbly. 60

12/02/2016

Barrel Length

234.2 ft. Navigation Control

Waterway Opening (sf.) 4480Structure Length

ft. Year Painted 1956

0 - No nav. control on waterwayDeck Width (Out-to-Out) 26.7

+ P A I N T +

APPR: 0 TOTAL:5 - Not eligible

MAIN: 3

Main Span Length 90.0 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 Date

Abutment Foundation (Material/Type)

1 - CONC Frac. Critical

1 - Pinned

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 10/08/20135619 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) 6253 sq. ft.

DBL:VEH: 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

0.83 ft. Vertical0.83 ft. Rt

Wear Surf Install Year

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

R - CRIT - MONITOR

Year 2003Primer Type 1 - Lead - non 3309 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 15.4

25.8Deck Rebars Install Year

Deck Rebars

Finish Type F - - Phenolic Resin AlumWear Course/Fill Depth 0.15 ft.

0 - None

Design Load 4 - H 20

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

43 ° 57

Inspector Name Forsyth, Roy

Latitude Control Section (TH Only) Status' 33.74 ''

2 - 2-way traffic

Routine Inspection Frequency 12

Sect., Twp., Range

1.0 MI SE OF JCT TH 169 Level of Service 1 - MAINLINE

- 28W Roadway Type26 - 106N

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

Custodian 02 - County Highway Agency

Owner 02 - County Highway AgencyDeck 6 Unsound

Deck %

C O N D I T I O N° 9 '

A - Open

Longitude 94 012+00.250 + N B I 16.96 '' Reference Point

79 Crew

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

Agency Br. No. 47

District 07

Bridge Match ID (TIS) 0 Userkey

CSAH 10 over BLUE EARTH RIVER

Minnesota Structure Inventory Report

Bridge ID: 7150

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

Date: 01/31/2017

Sufficiency Rating 79.4Roadway Name or Description

10

City

Routine Inspection Date 10/03/2016

Desc. Loc.

Township 07023 - VERNON CENTER CSAH 10

Number

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

NRoute Sys 04 - CSAHCounty 007 - Blue Earth Functionally Obsolete

Lanes

Waterway Adequacy 6Max. Vert. Clear.

ft.Legislative District 24Bft.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

26.0 ft.

Service Under

ft.

ft. Approach Alignment 5Horizontal Clear.

ft.

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

HCADT ADTT7

Year Built 1956

MN Year Reconstructed Functional Class

%Channel 6

Substructure

0Superstructure 6

ON 2 UNDER

311 YEAR 2008BMU Agreement ADT

Structure Evaluation 6If 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

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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:

Blue Earth

07023 - VERNONCENTER

106N26 28W

4 - Steel Continuous 2 -Stringer/Multi-beam or Girder

6 6 7 6 N

5 6

0 - Not Required

1 - Object Markers

0 - Not Required

N - Not Applicable

R - CRIT - MONITOR

1.0 MI SE OF JCT TH 169

04 - CSAH 10

79

012+00.250

234.2

26.7

5619 sq. ft. / %

sq. ft. / %

N/A

A - Open

ft.

ft.

Postings:List:

MINNESOTA BRIDGE INSPECTION REPORT

02/01/2017

BRIDGE 7150 CSAH 10 OVER BLUE EARTH RIVER

Unofficial Structurally Deficient N

NUnofficial Functionally Obsolete

Unofficial Sufficiency Rating 79.4

ELEMNBR ELEMENT NAME INSP. DATE QUANTITY

QTYCS 1

QTYCS 2

QTYCS 3

QTYCS 4REPORT TYPE

Reinforced Concrete Deck 01/31/2017 6253 SF 6128 0 125 012 Underwater

10/03/2016 6253 SF 6128 0 125 0Routine

Notes: Minor cracking

510 - Wearing Surfaces 5619 SF 5507 0 112 0

Notes: Bituminous Overlay Notes: 2009 - Spalls near expansion joints and gutter lines.2013, 2014, 2015, 2016 - Bituminous surface cracked at end joints and over piers.

Underwater 01/31/2017

5619 SF 5507 0 112 0Routine 10/03/2016

Steel Open Girder/Beam 01/31/2017 935 LF 889 46 0 0107 Underwater

10/03/2016 935 LF 889 46 0 0Routine

Notes: 2008 - Moderate rust, mostly on lower flanges near the cantilevered joints.2013, 2014 - Rust at joints continues to get worse.2015 - MN/DOT snooper truck inspection found rust at ends of center span.

515 - Steel Protective Coating 8415 SF 7812 0 414 189

Notes: 2016 - Beams = 36 WF 150. See computation sheet = 8415 SFD


8415 SF 7812 0 414 189Routine 10/03/2016

Steel Pin and Pin & Hanger Assemblyor both

01/31/2017 8 EA 0 7 1 0161 Underwater

10/03/2016 8 EA 0 7 1 0Routine

Notes: 1999 -MN/DOT crew & snooper truck did ultrasonic examination on pins and top flange cover plates ends. Also mag. particle exam onbottom flange cover plates ends.2004 - MN/DOT did non-destructive examination of pin & hangers. No relevent indications found. See report.04/19/2005 - MN/DOT Bridge crew tightened one of the nuts on one of the pins. The other pin is 1" - 1/12" too short to do anything with. Seee-mail from Larry Cooper, MN/DOT.2008 - See detailed report dated 9/5/20072012 - The pinned assembly at G3S is rated as condition state 4 due to a short pin and missing cotter key (See Photo 2).2015 - MN/DOT snooper truck inspection found that plates above pin hangers have flaking rust.


Notes: 2016 - Pins = 8 x 2 sides x 2.13 SF = 34 SF. See MN/DOT report.


34 SF 0 30 4 0Routine 10/03/2016

Reinforced Concrete Column 01/31/2017 4 EA 3 1 0 0205 Underwater

10/03/2016 4 EA 4 0 0 0Routine

Notes: [2016 underwater inspection] - An area of section loss, 6 inches wide by 1.5 feet high with a penetration of up to 1/4 inch, was observedat 1.5 feet below the waterline on the downstream nose of Pier 1.

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Reinforced Concrete Abutment 01/31/2017 96 LF 96 0 0 0215 Underwater

10/03/2016 96 LF 96 0 0 0Routine

Notes: 2016 - 56' + 4 x 10' = 96 LF

Reinforced Concrete Pile Cap/Footing 01/31/2017 2 LF 2 0 0 0220 Underwater

Notes: [2016 underwater inspection] - The top of the footing was exposed from the upstream nose to the upstream quarter point along thesouth face of Pier 1 with 1 foot of maximum vertical face exposure detected. The footing was exposed along the upstream half of the north faceof Pier 2 with 3 inches of maximum vertical face exposure detected.

Reinforced Concrete Pier Cap 01/31/2017 52 LF 52 0 0 0234 Underwater

10/03/2016 52 LF 52 0 0 0Routine

Assembly Joint without Seal 01/31/2017 79 LF 25 54 0 0305 Underwater

10/03/2016 79 LF 25 54 0 0Routine

Notes: Rust is dropping onto bridge seats.

Movable Bearing 01/31/2017 12 EA 0 12 0 0311 Underwater

10/03/2016 12 EA 0 12 0 0Routine

Notes: Some exterior bearings are partialy covered with gravel from washing along the wings.2008 - Very rusted.2015 - MN/DOT snooper truck inspection found pack rust on south bearing plates and beam sole plates. West pier bearing rocked slightly north.

Fixed Bearing 01/31/2017 4 EA 0 4 0 0313 Underwater

10/03/2016 4 EA 0 4 0 0Routine

Notes: 2007 - Bearings showing rust and corrosion.2012 - 2013 - South abutment bearings are rusted and frozen. See photo.

Metal Bridge Railing 01/31/2017 469 LF 0 469 0 0330 Underwater

10/03/2016 469 LF 0 469 0 0Routine

Notes: 2008 - Heavy surface rust.2010 - Heavy surface rust, should be sand blasted and painted.2012 - 2013 -Rust continues to increased.2015 - Coating on railing is approximately 90% failed.


Notes: 2016 - 2'-1" Railing; 469' x 2.08 SF = 976 SF


976 SF 0 0 49 927Routine 10/03/2016

Critical Deficiencies or Safety Hazards 01/31/2017 1 EA 1 0 0 0800 Underwater

10/03/2016 1 EA 1 0 0 0Routine

Notes: No critical findings observed during 2016 inspection.

Bituminous Approach Roadway 01/31/2017 2 EA 2 0 0 0822 Underwater

10/03/2016 2 EA 2 0 0 0Routine

Notes: 2011 - Roadway seal coated

Secondary Members (Superstructure) 01/31/2017 1 EA 1 0 0 0855 Underwater

10/03/2016 1 EA 1 0 0 0Routine

Notes: Steel diaphragms

Concrete Shear Cracking 01/31/2017 1 EA 1 0 0 0883 Underwater

10/03/2016 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

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Scour 01/31/2017 1 EA 0 1 0 0885 Underwater

10/03/2016 1 EA 0 1 0 0Routine

Notes: R - Scour critical. Monitoring required.2008 - See underwater report dated Nov. 2007 - Minor scour in local areas.2012 Collins Engineers, Inc. has rated bridge scour critical. See Underwater Report dated 9-11-2012.

Other Bridge Signing 01/31/2017 1 EA 1 0 0 0891 Underwater

10/03/2016 1 EA 1 0 0 0Routine

Slopes & Slope Protection 01/31/2017 1 EA 0 1 0 0892 Underwater

10/03/2016 1 EA 0 1 0 0Routine

Notes: 2003 - Heavy erosion on both slopes.2009 - BEC Maintenance placed rip rap on lower area of the north abutment. Removed some of the deadfall trees from the area.2015 - Slope at north abutment not protected.

Guardrail 01/31/2017 1 EA 1 0 0 0893 Underwater

10/03/2016 1 EA 1 0 0 0Routine

Deck & Approach Drainage 01/31/2017 1 EA 0 1 0 0894 Underwater

10/03/2016 1 EA 0 1 0 0Routine

Notes: 2007 - Drainage near ends of bridge carries sand and debris onto bridge seat area.2009 - BEC Maintenance removed some to the excess fill adjacent to the ends of the abutment seats.

Sidewalk, Curb, & Median 01/31/2017 1 EA 0 1 0 0895 Underwater

10/03/2016 1 EA 0 1 0 0Routine

Notes: Some cracking and spalling of the curb.No sidewalk.

Miscellaneous Items 01/31/2017 1 EA 1 0 0 0899 Underwater

10/03/2016 1 EA 1 0 0 0Routine

Notes: 2012 - Telephone conduit attached to west side of bridge.

Protected Species 01/31/2017 1 EA 1 0 0 0900 Underwater

10/03/2016 1 EA 1 0 0 0Routine

Notes: 2016 - The presence of protected species living on this structure was observed.

General Notes: 2004 - Same conditions exist.2005 - Bridge seats at east end need to be cleaned. Also trees in channel and slopes need to be removed. See Element 161for MN/DOT repair work.2006 - No changes.2007 - On November 19, 2007, Collins Engineers, Inc. completed an underwater inspection. See bridge file for completereport.10-16-08 Snooper inspected, cantilevered hinges and hangers, all bolted connections and cover plates, bearing assemblies atpiers and underside of the deck. P. Madden, A. Fritz.2010 - Debris hung up on piers.2011 - Trees hung up on both piers.2012 - Trees hung up on south pier.2012 - Collins Engineers, Inc. Underwater inspection 9-11-2012. See report.2013 - Small trees hung up on both piers.2013 - HDR completed revised load rating after inspection on 04-29-2013. See report.2014, 2015, 2016 - Rusting of metal surfaces continues. River clear of debris.2015 - MN/DOT snooper truck on site for an inspection 09-08-2015.

58. Deck NBI:

36A. Brdg Railings NBI:

36B. Transitions NBI:

36C. Appr Guardrail NBI:


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

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:

Rating revised in accordance with Collins Engineers, Inc. underwater report.

2016 - Bridge is on a curve and a hill to the north.

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Photo 1 - Overall looking west.

Photo 2 - North Abutment looking north.

Pictures

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Pictures

Photo 3 - Pier 1 looking south.

Photo 4 - Pier 2 looking north.

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Pictures

Photo 5 - South Abutment looking south.

Photo 6 - Overall looking east.

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Pictures

Photo 7 - Typical concrete at waterline near the downstream nose of Pier 1 looking south.

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N

Flo

w

River

Blue Earth

72'-1"

To Bk. North Abut.

90'-0" 72'-1"

To Bk. South Abut.

2

Pier 1 Pier 2

-3.8

-5.1

-6.2

-6.6

-6.7

-5.4

-5.2

-4.8

-6.7

-4.7-5.5

-7.2

3

-5.1

T/Footing

-7.1

T/Footing

6

7

5

4

(Typ.)

Shoreline

-5.2

8 1

-4.2

-4.9

-4.9

-5.3

-5.8

-7.1

-5.9

-4.4

-4.7 -6.4

-6.0

-5.0-5.3

SOUNDING PLAN

TYPICAL END VIEW OF PIERS

Legend

-2.0

-5.2

Timber Debris

Sounding Depth (12/2/16)

Sounding Depth (9/11/12)

DISTRICT 7, BLUE EARTH COUNTY

OVER THE BLUE EARTH RIVER

STRUCTURE NO. 7150

INSPECTION AND SOUNDING PLAN

MJS

RAF

12/2/2016

1"=20'

9687

substructure units.

4. Soundings were taken parallel to the bridge at 1/4 point intervals between the

in feet. All soundings based on 2016 waterline location.

3. Soundings indicate the water depth at the time of inspection and are measured

corresponds to a waterline elevation of 981.2.

approximately 2.7 feet below the top of the diaphragm wall at Pier 1. This

2. At the time of inspection on December 2, 2016, the waterline was located

1. Piers 1 and 2 were inspected underwater.

GENERAL NOTES:

of Pier 1.

8 Up to 1.5 foot diameter riprap was protecting the north embankment along the north face

3 feet to 2 foot below the waterline with penetrations up to 1/2 inch deep.

7 A band of light to moderate scaling was observed across the downstream end from

6 The South Abutment was well protected with heavy riprap and large pieces of concrete.

3 inches of maximum vertical face exposure detected.

5 The footing was exposed along the upstream half of the north face of Pier 2 with

1/4 inch, was observed at 1.5 feet below the waterline on the downstream nose of Pier 1.

4 An area of section loss, 6 inches wide by 1.5 feet high with a penetration of up to

exposure detected.

quarter point along the south face of Pier 1 with 1 foot of maximum vertical face

3 The top of the footing was exposed from the upstream nose to the upstream

2 The channel bottom consisted of fine silty sand with 3 inches of probe rod penetration.

2 inches of probe rod penetration.

1 The channel bottom consisted of gravel overlaid with fine silty sand with

INSPECTION NOTES:

-3.1

-0.3

-2.0

-1.6

Figure No.: 1

UNDERWATER BRIDGE INSPECTION

DEPARTMENT OF TRANSPORTATION

MINNESOTA

Checked By: Scale:

Drawn By: Date:

www.collinsengr.com

(651) 646-8502

St. Paul, MN. 55104

Suite 206

1599 Selby Ave.

Project: of 17

UPSTREAM FASCIA PROFILE

To Bk. North Abut. To Bk. South Abut.

72'-1"

~ Pier 1

90'-0"

~ Pier 2

72'-1"

Shoreline

B/Ftg.

El. 973.36B/Ftg.

El. 971.94

B/Ftg.

El. 973.36B/Ftg.

El. 971.94

To Bk. North Abut. To Bk. South Abut.

72'-1"

~ Pier 1

90'-0"

~ Pier 2

72'-1"

W.L. El. 981.2

1000

980

960

1000

980

960

1000

980

960

1000

980

960

on 9/11/12

Channel Bottom

on 9/11/12

Channel Bottom

DOWNSTREAM FASCIA PROFILE

Refer to Figure 1 for General Notes.

Note:

UPSTREAM AND DOWNSTREAMFASCIA PROFILES

DISTRICT 7, BLUE EARTH COUNTY

OVER THE BLUE EARTH RIVER

STRUCTURE NO. 7150

MJS

RAF

9687

12/2/2016

1"=20'

Legend

Channel Bottom per 2012 Inspection

Channel Bottom per 2016 Inspection

Shoreline

on 12/2/16

Channel Bottom

Shoreline

W.L. El. 981.2

Shoreline

on 12/2/16

Channel Bottom

UNDERWATER BRIDGE INSPECTION

DEPARTMENT OF TRANSPORTATION

MINNESOTA

Checked By: Scale:

Figure No.: 2

Drawn By: Date:

www.collinsengr.com

(651) 646-8502

St. Paul, MN. 55104

Suite 206

1599 Selby Ave.

Project: of 17

bridge # csah 10 over blue earth river€¦ · county 007 - blue earth route sys 04 - csah...

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