2 AVE SW(MSAS 123) over CANNON RIVER

Transcription

1 2016 UNDERWATER BRIDGE INSPECTION REPORT BRIDGE # AVE SW(MSAS 123) over CANNON RIVER DISTRICT: District 6 COUNTY: Rice CITY/TOWNSHIP: Faribault STATE: Minnesota Date of Inspection: Equipment Used: 05/26/2016 Owner: City or Municipal Highway Agency Inspected By: Owens, Garrett Report Written By: Garrett Owens Report Reviewed By: Final Report Date:

2 TABLE OF CONTENTS PAGE NUMBER UNDERWATER SUMMARY 3 UNDERWATER INSPECTION 4 UNDERWATER INSPECTION PROCEDURES 6 STRUCTURE INVENTORY 7 ELEMENTS 8 PICTURES 11 DRAWINGS 15

3 UNDERWATER INSPECTION REPORT SUMMARY The substructure unit inspected at Bridge No , Pier 1, was found to be generally in satisfactory to fair condition with no defects of structural significance observed. The concrete was typically soft and easily erodible with up to 5 inches of penetration over 50 percent of the pier face from channel bottom to 1 foot above the waterline. Random locations exhibited exposed coated reinforcing steel with no section loss present. The north and south embankment slopes were lined with an articulated concrete mat and the channel bottom material at the pier consisted of randomly displaced paving stones with sand infill. INSPECTION FINDINGS (A) The north and south slope embankments were lined with articulated concrete mat from top of slope to 1 foot below waterline and from 10 feet upstream to 10 feet downstream of the bridge fascia. (B) The concrete face of the north pier wall from the upstream nose to the midpoint and from the downstream quarter to the downstream consists of soft and easily erodible concrete with up to three inches of penetration from channel bottom to 1 foot above the waterline. (C) The channel bottom consisted of randomly displaced paving stones with sandy infill. (D) The slope protection mat had missing and displaced blocks.the most severe damage was 7 foot by 3 foot area of missing blocks at the south shore. (E) The upstream half of the south side of the pier had heavy scaling with up to 5 inches of penetration. Exposed rebar was present. (F) The downstream quarter of the south face of the pier exhibited heavy spalling with up to 4.5 inches of penetration. Exposed rebar was present, no section loss was present RECOMMENDATIONS (A) Monitor concrete deterioration at Pier and if the deficiencies continue to progress and the exposed reinforcing steel starts to exhibit section loss, repairs may become warranted at that time. (B) Reinspect the submerged substructure units at the normal maximum recommended (NBIS) interval of sixty (60) months. Contractor: Contractor Job Number: Collins Engineers, Inc Page 3 of 16

4 UNDERWATER INSPECTION 1. BRIDGE DATA Bridge #: Feature Intersected: Facility Carried: District: County: CANNON RIVER 2 AVE SW(MSAS 123) District Rice Bridge Description: The superstructure consists of a two span haunched slab bridge supporting a reinforced concrete deck. The bridge is supported by two reinforced concrete abutments and one reinforced concrete pier wall with steel H-Piles extending from the bottom of the wall up 7 feet. 2. INSPECTION DATA Professional Engineer/Team Leader: Inspection Diver: Date of Underwater Inspection: Weather Conditions: Underwater Visibility (feet): Waterway Velocity (ft/sec): Cory R. Stuber, P.E. Garrett R. Owens, P.E. 05/26/2016 Sunny, 80 F 1.0 Negligible 3. SUBSTRUCTURE INSPECTION DATA Substructure(s) Inspected: Pier 1 General Shape: The pier consists of an oblong reinforced concrete pier wall with rounded noses. The pier wall encases 18 steel H-Piles which extend into the pier wall from the bottom of the pier wall up 7 feet. Maximum Water Depth at Substructure(s) Inspected (feet): WATERLINE DATUM Water Level Reference: Waterline Elevation (feet): Description: The bottom of architectural cap at downstream nose of Pier The waterline was approximately 7.4 feet below reference. 5. NBIS CODING INFORMATION (Minnesota specific codes are used for 92B and 113) Item 60: Substructure: Item 61: Channel and Channel Protection: Item 62: Culvert: Item 92B: Underwater Inspection: Code: Code: Code: Code: 6 5 Y 48 05/2016 Page 4 of 16

5 Item 113: Scour Critical Bridge: Code: L Bridge is scour critical because abutment or pier foundation is rated as unstable due to observed scour at bridge site. Yes X No (Mark your selection with an X) 6. STRUCTURAL ELEMENT CONDITION RATING Conditions ELEM # Element Description Quantity Unit CS1 CS2 CS3 CS4 210 Reinforced Concrete Pier Wall 81 LF Slopes and Slope Protection 1 EA Scour 1 EA 1 Page 5 of 16

6 UNDERWATER INSPECTION INSPECTION PROCEDURES The routine underwater inspection of Bridge (MSAS 123 over the Cannon River) was completed on May 26, 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 Pier 1. According to the bridge inventory or design drawings, Pier 1were founded on 18 steel H-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. Page 6 of 16

7 Bridge ID: Minnesota Structure Inventory Report 2 AVE SW(MSAS 123) over CANNON RIVER Date: 08/31/ G E N E R A L + + R O A D W A Y + + I N S P E C T I O N + Agency Br. No. Crew Bridge Match ID (TIS) 0 Userkey 211 District 06 County Rice Route Sys 05 - MSAS Number 123 Functionally Obsolete City Sect., Twp., Range Latitude ' '' Control Section (TH Only) Status Custodian Owner Main Span Type 2 - Concrete Continuous Median Width On Bridge Main Span Design Main Span Detail Appr. Span Type Appr. Span Design Appr. Span Detail Skew 0 Culvert Type Barrel Length Cantilever ID MAIN: 2 Main Span Length Structure Length 09 - Slab Span N - Not Applicable Number of Spans APPR: 0 TOTAL: 39.0 ft. Deck Width (Out-to-Out) 84.3 ft. Deck Material Wear Surf Type Wear Surf Install Year 2008 Wear Course/Fill Depth Deck Membrane Deck Rebars Structure Area (Out-to-Out) 7520 sq. ft. Roadway Area (Curb-to-Curb) + M I S C. Structure Flared Parallel Structure Field Conn. ID Abutment Foundation (Material/Type) Pier Foundation (Material/Type) Historic Status 3 - FTG PILE 1 - CONC 3 - FTG PILE Underwater Y 60 Pinned Asbly. Spec. Feat ft. Navigation Control Year Painted Posted Load 5707 sq. ft. Traffic B R I D G E D A T A No flare N - No Splice 5 - Not eligible + P A I N T + ft. Bridge Railing 1 - MEETS STANDARDS ft. N - No parallel structure GR Transition Appr. Guardrail GR Termini 1 - CONC Frac. Critical 0 - Not Required 0 - Not Required Sidewalk Width 50A. Lt 8.00 ft. 50B. Rt ft. Horizontal 0 - Not Required Curb Height Faribault 0.3 MI S OF JCT TH 3 Level of Service 1 - MAINLINE N - 20W Roadway Type Lt 1 - Concrete Cast-in-Place 4 - Low Slump Concrete 0.17 ft. 0 - None Deck Rebars Install Year ft. Rt Painted Area Primer Type 0.67 ft. Vertical Unsound Paint % Finish Type 1 - Epoxy Coated Reinforcing + B R I D G E 2-2-way traffic Longitude ' '' Reference Point City or Municipal Highway 04 - City or Municipal Highway Roadway Name or Description Township 2 AVE NW (MSAS 123) Desc. Loc. BMU Agreement Year Built 2008 MN Year Reconstructed FHWA Year Reconstructed MN Temporary Status Bridge Plan Location Date Opened to Traffic Maint. Area Roadway O/U Key Detour Length 1.0 mi. Lanes Route On Structure On - Off System 1 - ON Roadway Width 64.0 ft. Legislative District 26B Vertical Clearance ft. Potential ABC 2 - N/A Max. Vert. Clear. ft. Service On 5 - Highway-pedestrian Appr. Surface Width Service Under N - Not Applicable 4 - MUNICIPAL + S T R U C T U R E + HCADT Functional Class If Divided + R D W Y Horizontal Clear. Lateral Clearance ON 5 UNDER ADT 5 - Waterway Bridge Roadway Width YEAR 2007 N - Not Applicable + I N N + W A T E R W A Y + Drainage Area (sq. mi.) Waterway Opening (sf.) 778 Pier Protection Posting VEH: N - NOT REQUIRED N - NOT REQUIRED N - NOT REQUIRED D E P T H I N S P. + Y/N Freq Date N Rating Date 11/27/ /26/ No nav. control on Rail Type Lt 28 Rt 28 A N - N/A B N - N/A C N - N/A sq. ft. ADTT 16 - Urban - Minor Arterial 64.0 ft. S I G N S + ft. ft. ft. ft. Structurally Deficient Sufficiency Rating 97.1 Inspection Date 05/16/2016 Inspection Frequency 24 Inspector Name + N B I Nav. Clr. (ft.) Nav. Vert. Lift Bridge Clear. (ft.) Vert. 0.0 Horiz. MN Scour Code L - STBL - LOW RISK Year C A P A C I T Y R A T I N G S + Design Load Operating Rating Owens, Garrett A - Open C O N D I T I O N Deck 7 Unsound Superstructure 7 Deck % Underclearances Waterway Adequacy ft. ft. Approach Alignment 8 ft. 0 D I M E N S I O N S + NB-EB % SB-WB Substructure Channel 5 Culvert + N B I Structure Evaluation 6 Deck Geometry HS 25 (OR GREATER) 2 - HS TRUCK Inventory Rating 2 - HS TRUCK 25.0 N N N SEMI: Overweight Permit Codes 6 N R A T I N G S + A P P R A I S A L R A T I N G S + + S A F E T Y F E A T U R E S + DBL: Page 7 of 16

8 09/09/2016 Inspector: CO Bridge MINNESOTA BRIDGE INSPECTION REPORT BRIDGE AVE SW(MSAS 123) OVER CANNON RIVER County: City: Township: Rice Location: 0.3 MI S OF JCT TH 3 Faribault Route: 05 - MSAS 123 Ref. Pt.: Control Section: Section: 30 Township: 110N Range: 20W Maint. Area: Span Type: 2 - Concrete Continuous 1 - Slab Local Agency Bridge Nbr.: List: NBI Deck: 7 Super: 7 Sub: 6 Chan: 5 Culv: N Open, Posted, Closed: A - Open MN Scour Code: L - STBL - LOW RISK Appraisal Ratings - Approach: 8 Waterway: 9 Required Bridge Signs - Load Posting: 0 - Not Required Traffic: 0 - Not Required Horizntal: 0 - Not Required Vertical: N - Not Applicable Length: 89.2 ft. Deck Width: 84.3 ft. Rdwy. Area/ Pct. Unsnd: 5707 sq. ft. / % Paint Area/ Pct. Unsnd: sq. ft. / % Culvert: N/A Postings: Unofficial Structurally Deficient N Unofficial Functionally Obsolete N Unofficial Sufficiency Rating 97.1 ELEM NBR ELEMENT NAME REPORT TYPE INSP. DATE QUANTITY CS 1 CS 2 CS 3 CS 4 Reinforced Concrete Slab 05/26/ SF Underwater 05/16/ SF Notes: There are three longitudinal cracks in the underside of the deck that extend out from the abutments. [2014] - some crack have efflorescence. [2016] - 25sf of minor cracking with efflorescence Wearing Surfaces Underwater 05/26/ SF /16/ SF Notes: Concrete Slab with Cathodic Protection System Notes: There are no spalls, delamination's, or patches noted in the surface of the deck. [2014] - no change [2016] - 300lf of moderate sized cracks. minor spalls at top of end block along poured deck joint. Reinforced Concrete Pier Wall 05/26/ LF Underwater 05/16/ LF Notes: No concrete deterioration noted. [2014] - no change [2016] - 5 leaching vertical cracks. [2016] -Underwater Inspection - The concrete face of the north pier wall from the upstream nose to the midpoint and from the downstream quarter to the downstream consists of soft and easily erodible concrete with up to three inches of penetration from channel bottom to 1 foot above the waterline. The upstream half of the south side of the Pier had heavy scaling with up to 5 inches of penetration. Exposed rebar was present. Reinforced Concrete Abutment 05/26/ LF Underwater 05/16/ LF Notes: South Abutment - There are 2 hairline vertical cracks in the front face of the abutment. The cracks are located between bearings 6 and 7 and under bearing 4. [2014] - loose sand and fill covering the abutment. [2016] - no change North Abutment - There are 3 hairline vertical cracks in the front face of the abutment. The cracks are located between bearings 5 and 6 and 6 and 7 and along the east side of bearing 3. [2014, 2016] - no change Reinforced Concrete Pier Cap 05/26/ LF Underwater Notes: No concrete deterioration noted. [2014, 2016] - no change 05/16/ LF Strip Seal Expansion Joint 05/26/ LF Underwater 05/16/ LF Notes: South End - OK, the strip seals were full of dirt and debris; however there were no signs of leakage at the bridge seat. [2012] - the east end of the abutment is wet at this time. [2014] - Both E and W faces have water leaking down them. [2016] - no change North End - OK, the strip seals were full of dirt and debris; however there were no signs of leakage at the bridge seat. [2014] - West side cover plate is missing all bolts. Also water leaking down abut. E and W corners. [2016] - no change Page 8 of 16

9 BRIDGE AVE SW(MSAS 123) OVER CANNON RIVER ELEM NBR ELEMENT NAME REPORT TYPE INSP. DATE QUANTITY CS 1 CS 2 CS 3 CS 4 Pourable Joint Seal 05/26/ LF Underwater 05/16/ LF Notes: The pourable joints are located in the approach panels. There are large areas along both approach slabs where the joint material has lost adhesion approximately 95 linear feet. [2012] - approximately 105 LF has lost adhesion. [2014] - no change [2016] - 110lf of lost adhesion and/or missing joint material. 10lf of spalled adjacent concrete. Reinforced Concrete Approach Slab 05/26/ SF Underwater 05/16/ SF Notes: South Approach - There are small cracked and delaminated area located along the end block in both lanes. There is a 3" X 36" cracked and delaminated area along the right hand lane in the south bound lane and a 3" X 12" cracked and delaminated area along the right hand lane of the north bound lane. There are 4 full length unsealed longitudinal cracks in the approach. North Approach - There is a small 6" X 12" cracked and delaminated area located at the west end of the end block next to the curb. There are 6 full length unsealed longitudinal cracks in the approach there are now 12 full length unsealed longitudinal cracks in the approach. [2014, 2016] - no change Metal Bridge Railing 05/26/ LF Underwater 05/16/ LF Notes: The railing consists of 30" high solid concrete base with a 26" high painted steel rail attached to the top of the concrete rail. [2016] - no structural defects on metal rail. anchorages are secure Steel Protective Coating Underwater 05/26/ SF Notes: [2016] - a few minor paint scratches 05/16/ SF Reinforced Concrete Bridge Railing 05/26/ LF Underwater 05/16/ LF Notes: The railing consists of 30" high solid concrete base with a 26" high painted steel rail attached to the top of the concrete rail. West Railing - the concrete portion has 5 railing section with 1 to 4 vertical cracks per section with some staining or leaching. [2016] - no change East Railing - the concrete portion has 3 railing section with 1 to 2 vertical cracks per section with some staining or leaching. [2012] - there are 4 railing sections with cracking. [2014] - no change Critical Deficiencies or Safety Hazards 05/26/ EA Underwater Notes: [2014, 2016] - No critical finding were noted at the time of this inspection. 05/16/ EA Concrete Decks - Cracking & Sealing 05/26/ LF Underwater 05/16/ LF Notes: There is an unsealed transverse crack over the pier and two full length unsealed cold joint cracks. [2016] lf of cracking. approx. 300lf unsealed. Scour 05/26/ EA Underwater Slopes & Slope Protection 05/26/ EA Underwater 05/16/ EA Notes: The slopes are in stable condition. South Slope - vandals have remodeled one of the 3' X 10' concrete slope protection blocks located near the center line. [2014] - There are scattered area of blocks that have heaved or have been patched. [2016] - no change Page 9 of 16

10 BRIDGE AVE SW(MSAS 123) OVER CANNON RIVER ELEM NBR ELEMENT NAME REPORT TYPE INSP. DATE QUANTITY CS 1 CS 2 CS 3 CS 4 Deck & Approach Drainage 05/26/ EA Underwater Notes: [2016] - no drainage issues noted 05/16/ EA Sidewalk, Curb, & Median 05/26/ EA Underwater 05/16/ EA Notes: There is 60' of unsealed cracks in the sidewalk. All of the curb sections are intact. [2012] - there is 150' of unsealed cracks in the sidewalk. [2014] - There is a 2'x16" area of cracked and delam concrete at the expansion plate SE end. West sidewalk N end expansion plate has shifted and all bolts are missing. [2016] - no change Miscellaneous Items 05/26/ EA Underwater 05/16/ EA Notes: There are some areas of graffiti painted along the north abutment and the north slope. There are 4 light poles on the bridge that are in good condition. There is a concrete walkway and steel railing in front of the north abutment. The walkway and railing are in good condition. Protected Species 05/26/ EA Underwater Notes: [2016] - swallow nests are present. 05/16/ EA General Notes: Bridge NOTE: Bridge was built in 2008 it replaced Bridge [2010] - inspected by Brian Haugen. After the flooding of September 2010, BR#66546 was inspected for evidence of scour, flood related damage and/or timber debris accumulation. No significant flood related issues were found. [2012] - inspected by Gary Waletzki and Aaron Forthun [2014] - inspected by Gary Waletzki and Aaron Forthun. [2016] - inspected by Robert Pyfferoen Channel - NBI 8 The banks are in stable condition. 58. Deck NBI: 2014 Minor deterioration. 36A. Brdg Railings NBI: 36B. Transitions NBI: 36C. Appr Guardrail NBI: 36D. Appr Guardrail Terminal NBI: 59. Superstructure NBI: 60. Substructure NBI: 61. Channel NBI: 2014 Isolated deterioration Isolated deterioration Well vegetated. 62. Culvert NBI: 71. Waterway Adeq NBI: 72. Appr Roadway Alignment NBI: 2014 Chance of over topping is remote 2014 No speed reduction required. Inventory Notes: Garrett Owens Inspector's Signature Reviewer's Signature Page 10 of 16

11 Pictures Photo 1 - East Elevation, Looking West Photo 2 - West Elevation, Looking East Page 11 of 16

12 Pictures Photo 3 - Typical View of Pier and South Shore, Looking North Photo 4 - Typical View of Pier, Looking South Page 12 of 16

13 Pictures Photo 5 - Typical View of South Shoreline, Looking South Photo 6 - View of Heavy Damage to South Slope Mat, Looking West Page 13 of 16

14 Pictures Photo 7 - Exposed Rebar on the South Face, Looking North Photo 8 - Typical Spall and Scaling on Pier, Looking South Page 14 of 16

15 N Flow CANNON River 42'-0" 42'-0" Inspection Notes: Shoreline (Typ.) The north and south slope embankments were lined with articulated concrete mat from top of slope to 1 foot below waterline and from 10 feet upstream to 10 feet downstream of the bridge fascia. The upstream half and downstream quarter of the north face of the pier wall exhibited soft and easily erodable concrete with up to 3 inches of penetration from channel bottom to 1 foot above the waterline. 3 The channel bottom consisted of randomly displaced paving stones with sandy infill The slope protection mat had missing and displaced blocks. The most severe damage was 7 foot by 3 foot area of missing blocks at the south shore. 5 The upstream half of the south side of the pier had heavy scaling with up to 5 inches of penetration. Exposed rebar was present Pedestrian Trail 84'-4" 6 The downstream quarter of the south face of the pier exhibited heavy spalling with up to 4.5 inches of penetration. Exposed rebar was present, no section loss was present General Notes: The concrete pier was inspected during the underwater inspection. At the time of inspection on May 26, 2016 the waterline was located approximately 7.4 feet below bottom of architectural pier cap at downstream nose of the pier. This corresponds with a waterline elevation of feet. 3 Soundings indicate the water depth at the time of inspection and are measured in feet. SOUTH ABUTMENT NORTH ABUTMENT PIER SOUNDING PLAN Legend Sounding Depth from Waterline (5/26/16) Sounding Depth from Waterline (9/13/12) 1 Inspection Note Number 12x74 Steel H-Pile MINNESOTA DEPARTMENT OF TRANSPORTATION UNDERWATER BRIDGE INSPECTION STRUCTURE NO OVER THE CANNON RIVER CITY OF FARIBAULT, RICE COUNTY INSPECTION AND SOUNDING PLAN TYPICAL END VIEW OF TOWERS Page 15 of 16 Note: Refer to Figure 2 for Inspection Notes. Drawn By: BGDO 1599 Selby Avenue Date: JUNE 2016 Suite 206 Checked By: BRL St. Paul, MN, Scale: N.T.S. (651) Project: Figure No.: 1

16 42'-0" 42'-0" Pedestrian Trail Shoreline Shoreline W.L. El Channel Bottom on 9/13/12 B/Pier Wall EL Channel Bottom on 5/26/16 S. Abutment PIER N. Abutment 940 UPSTREAM FASCIA PROFILE 42'-0" 42'-0" Pedestrian Trail Shoreline Shoreline W.L. El B/Pier Wall EL Channel Bottom on 9/13/12 Channel Bottom on 9/13/ S. Abutment PIER N. Abutment 940 Note: DOWNSTREAM FASCIA PROFILE Refer to Figure 1 for General Notes. MINNESOTA DEPARTMENT OF TRANSPORTATION UNDERWATER BRIDGE INSPECTION STRUCTURE NO OVER THE CANNON RIVER CITY OF FARIBAULT, RICE COUNTY UPSTREAM AND DOWNSTREAM FASCIA PROFILES Page 16 of 16 Drawn By: BGDO 1599 Selby Avenue Date: JUNE 2016 Suite 206 Checked By: BRL St. Paul, MN, Scale: 1"=20' (651) Project: Figure No.: 2