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Bridge Inspection Report 20172017 ROUTINE BRIDGE INSPECTION REPORT BRIDGE # 27A34 81 (ENCHANTED LANE) over CHANNEL DISTRICT: Metro STATE: Minnesota Date of Inspection: Equipment Used: COUNTY: Hennepin 08/29/2017 Owner: City or Municipal Highway Agency Inspected By: Flittie, Daniel Report Written By: Daniel Flittie Report Reviewed By: Craig Alberg Final Report Date: 09/06/2017 CITY /TOWNSHIP: Shorewood Table of Contents SECTION COVER STRUCTUREINVENTORY ELEMENTS PICTURES PICTURES - THUMBNAILS BRIDGE 27A34 RATING (2011) DRAWINGS PAGE 1 2 3 6 18 19 22 Minnesota Structure Inventory Report Bridge ID: 27A34 81(ENCHANTED over CHANNEL LANE) Date: 08/29/2017 +GENERAL+ +ROADWAY+ +INSPECTION+ Agency Br. No. Crew Bridge Match ID (TIS) 0 Userkey 194 District 05 Maint. Area Roadway O/U Key Route On Structure Structurally Deficient N County 027 - Hennepin Route Sys 10 -MUN Number 81 Functionally Obsolete N City Shorewood Roadway Name or Description Sufficiency Rating 74.6 Township MUN 81 Routine Inspection Date 08/29/2017 Desc. Loc. TO SHADY ISLAND Level of Service 1 -MAINLINE Routine Inspection Frequency 24 Sect., Twp., Range 30 - 117N - 23W Roadway Type 2 - 2 -way traffic Inspector Name Flittie, Daniel Latitude 44 ° 54, 43.18 ,, Control Section (TH Only) Status A - Open Longitude -93 ° 38, 10.87 ,, Reference Point + N B I CONDITION RATINGS + Custodian 04 - City or Municipal Highway Detour Length 99.0 mi. Owner 04 - City or Municipal Highway BMU Agreement Lanes ON 2 UNDER 0 ADT 260 YEAR 1988 Deck 8 Unsound Superstructure 8 Deck Year Built 1997 HCADT ADTT % Substructure 8 MN Year Reconstructed Functional Class 19 - Urban - Local Channel 8 FHWA Year Reconstructed Culvert N MN Temporary Status +RDWY DIMENSIONS+ +N BI APPRAISAL RATINGS+ Bridge Plan Location 1-CENTRAL Date Opened to Traffic If Divided NB -EB SB -WB Structure Evaluation 8 On -Off System 0-OFF Roadway Width 20.00 ft. ft. Deck Geometry 4 Legislative District 33B Vertical Clearance ft. ft. Underclearances N Potential ABC 2 - N/A Max. Vert. Clear. ft. ft. Waterway Adequacy 9 Horizontal Clear. ft. ft. Lateral Clearance ft. ft. Approach Alignment 8 +STRUCTURE + +SAFETY FEATURES+ Service On 1 -Highway Appr. Surface Width 20.0 ft. Service Under 5 - Waterway Bridge Roadway Width 20.0 ft. Bridge Railing 1 -MEETS STANDARDS Main Span Type 7 - Timber Median Width On Bridge ft. GR Transition 0 - SUBSTANDARD Main Span Design 09 - Slab Span Appr. Guardrail 1 -MEETS STANDARDS +MISC. BRIDGE DATA+ Main Span Detail GR Termini 0-SUBSTANDARD Structure Flared 0 - No flare Appr. Span Type + I N DEPTH I N S P. + Appr. Span Design Parallel Structure N - No parallel structure Appr. Span Detail Field Conn. ID YIN Freq Date Skew 0 Abutment 2 - TIMBER Frac. Critical Culvert Type Foundation (Material /Type) 4 - PILE BENT Underwater 60 09/07/2016 Barrel Length Pinned Asbly. Pier Foundation 2 - TIMBER Cantilever ID (Material /Type) 4 -PILE BENT Spec. Feat. +WATERWAY+ Number of Spans Historic Status 5 - Not eligible MAIN: 3 APPR: 0 TOTAL: Drainage Area (sq. mi.) Main Span Length 20.0 ft. +PAINT+ Waterway Opening (sf.) 200 Structure Length 52.0 ft. Navigation Control 0 - No nay. control on Deck Width (Out -to -Out) 24.0 ft. Year Painted Pier Protection Deck Material 8 - Wood or Timber Unsound Paint % Nay. CIr. (ft.) Vert. 0.0 Horiz. 0.0 Wear Surf Type 6 - Bituminous Painted Area sq. ft. Nay. Vert. Lift Bridge Clear. (ft.) Wear Surf Install Year Primer Type MN Scour Code I - LOW RISK Year 2001 Wear Course /Fill Depth 0.29 ft. Finish Type +CAPACITY RATINGS + Deck Membrane 0 - None Deck Rebars N - Not Applicable (no deck) Design Load 9 - HS 25 (OR GREATER) +BRIDGE SIGNS + Deck Rebars Install Year Operating Rating 2 - HS TRUCK 36.6 Structure Area (Out -to -Out) 1248 sq. ft. Posted Load 0 - Not Required Inventory Rating 2 - HS TRUCK 26.5 Roadway Area (Curb -to -Curb) 1044 sq. ft. Traffic 0 - Not Required Posting VEH: SEMI: DBL: Sidewalk Width 50A. Lt 0.00 ft. 50B. Rt 0.00 ft. Horizontal 1 - Object Markers Rating Date 07/26/2011 Curb Height Lt 0.00 ft. Rt 0.00 ft. Vertical N - Not Applicable Overweight Permit Codes Rail Type Lt 06 Rt 06 A N - N/A B N - N/A C N - N/A MINNESOTA BRIDGE INSPECTION REPORT 09/06/2017 BRIDGE 27A34 81 (ENCHANTED LANE) OVER CHANNEL County: Hennepin Location: TO SHADY ISLAND City: Shorewood Route: 10 - MUN 81 Ref. Pt Township: Control Section: Section: 30 Township: 117N Range: 23W Maint. Area: Span Type: 7 - Wood or Timber 1 - Slab Local Agency Bridge Nbr.: List: Length: 52.0 ft. 000 +00.000 Deck Width: 24.0 ft. Rdwy. Area/ Pct. Unsnd: 1044 sq. ft. / % Paint Area/ Pct. Unsnd: sq. ft. / % Culvert: N/A Postings: NBI Deck: 8 Super: 8 Sub: 8 Chan: 8 Culv: N Open, Posted, Closed: A - Open MN Scour Code: I - LOW RISK Appraisal Ratings - Approach: 8 Waterway: 9 Required Bridge Signs - Load Posting: 0 - Not Required Traffic: 0 - Not Required Horizntal: 1 - Object Markers Vertical: N - Not Applicable ELEM NBR ELEMENT NAME 54 Timber Slab QT REPORT TYPE INSP. DATE QUANTITY CS 1 Unofficial Structurally Deficient N Unofficial Functionally Obsolete N Unofficial Sufficiency Rating 74.6 Y QTY QTY QTY CS 2 CS 3 CS 4 Routine 08/29/2017 1152 SF 1152 0 0 0 Underwater 09/07/2016 1248 SF 1248 0 0 0 Notes: [2016] Migrator assumed CS1. [08/29/17] OTO width = 22' -2 ". OTO bridge field measures 52' -0 ". Slab Area = 1152 sf. Bottom of slab very clean, all spans, no indications of distress. 4x10 approach span, 4x12 main span. 510 - Wearing Surfaces Routine 08/29/2017 1053 SF 1049 4 0 0 Underwater 09/07/2016 1044 SF 1044 0 0 0 Notes: [08/20/15] Roadway field measures 20' -3" + (2) 11" rub rails, OTO width = 22'-l". OTO bridge field measures 52' -0 ". Slab Area = 1148 sf. [08/29/17] Recent bituminous /gravel wear course placed across approach road and bridge - no significant depth change; good condition. [08/29/17] Roadway field measures 20' -3 ", OTO bridge 52' -0 ". Rdwy Area = 1053 sf. Typical full width transverse cracks in wear course over piers. Say (2 piers) * (20.25') * (1"/12 crack width) => say 4 SF at CS -2, balance at CS -1. 4d6 Timhor Fln r Roam RAutmnp nROQ0017 g ,4 9 9 9 9 216 Timber Abutment Routine 08/29/2017 92 LF 92 0 0 0 Underwater 09/07/2016 102 LF 102 0 0 0 Notes: [2016] Migrator added 40 LF to abutment quantity to account for wingwalls (CS1:40 CS2:0 CS3:0 CS4:0). [08/20/15] Slight quantity change for field measured dimensions, no condition state change. Wingwall notes: [08/20/15] No change. [08/29/17] Field measure 2' OH (N) + (2) 8' WW + 6' OH (S) + 22' OTO = 46 LF * 2 = 92 LF; all CS -1 228 Timber Pile Routine 08/29/2017 36 EA 36 0 0 0 Underwater 09/07/2016 36 EA 36 0 0 0 Notes: [08/20/15] Remove timber column quantity, coded incorrectly. 10 piles at each abutment/ww + 8 piles at each pier, total = 36, all in Condition State 1. [08/29/17] Steel shims under the timber cap of a few piles; all piles in contact with cap or shims; no CS change. 235 Timber Pier Cap Routine 08/29/2017 120 LF 120 0 0 0 Underwater 09/07/2016 124 LF 124 0 0 0 Notes: [08/20/15] Slight quantity change for field measured dimensions, no condition state change. [08/29/17] 4 @ 30' -2" = 120 LF; all CS -1. Minor weathering on the exposed overhangs. BRIDGE 27A34 81 (ENCHANTED LANE) OVER CHANNEL ELEM QTY QTY QTY QTY NBR ELEMENT NAME REPORT TYPE INSP. DATE QUANTITY CS 1 CS 2 CS 3 CS 4 332 Timber Bridge Railing Routine 08/29/2017 104 LF 104 0 0 0 Underwater 09/07/2016 104 LF 104 0 0 0 Notes: [08/20/15] No change. [08/29/17] No change. 800 Critical Deficiencies or Safety Hazards Routine 08/29/2017 1 EA 1 0 0 0 Underwater 09/07/2016 1 EA 1 0 0 0 Notes: NO CRITICAL FINDINGS OBSERVED DURING THE LAST INSPECTION. [08/20/15] No change. [08/29/17] No change. 822 Bituminous Approach Roadway Routine 08/29/2017 2 EA 2 0 0 0 Underwater 09/07/2016 2 EA 2 0 0 0 Notes: [08/20/15] No change. [08/29/17] Recent bituminous /gravel wear course placed across approach road; good condition. 855 Secondary Members (Superstructure) Routine 08/29/2017 1 EA 1 0 0 0 Notes: [08/29/17] Member added for spreader beams. Deleted Floorbeam (Item 156). Member is secondary, acts as a diaphragm, not a primary member which a floor beam is, disagree with BSIPM B.3.3.4. Notes below from previous inspection. Item is a "1" qty, all spreader beams in good condition, CS -1. ------------------------ [08/20/15] Element added. 12x6 timber section; (1) stiffener beam in each approach span & (2) stiffener beams in the main span. Same quantity as timber cap, 124 LF, all in Condition State 1 885 Scour Routine 08/29/2017 1 EA 1 0 0 0 Underwater 09/07/2016 1 EA 1 0 0 0 Notes: [08/29/17] No scour evident, channel armor in place. Underwater inspection performed 09/07/16. 891 Other Bridge Signing Routine 08/29/2017 1 EA 0 0 1 0 Underwater 09/07/2016 1 EA 1 0 0 0 Notes: [08/20/15] Element added. All object markers accounted for and visible. Vegetation growth at SW corner of abutment growing up around object marker. [08/29/17] Heavy vegetation at SW and SE corners, beginning to obscure signs. [08/29/17] Gas marker on east end of bridge, totally obscured by vegetation; no marker visible on the west end; downgrade to CS -3 for vegetation removal around object marker sign. 892 Slopes & Slope Protection Routine 08/29/2017 1 EA 1 0 0 0 Underwater 09/07/2016 1 EA 1 0 0 0 Notes: [08/20/15] No change, channel slopes well protected. [08/29/17] No change. 893 Guardrail Routine 08/29/2017 1 EA 1 0 0 0 Underwater 09/07/2016 1 EA 1 0 0 0 Notes: [08/20/15] No change. [08/29/17] No change. 894 Deck & Approach Drainage Routine 08/29/2017 1 EA 1 0 0 0 Underwater 09/07/2016 1 EA 1 0 0 0 Notes: [08/20/15] No change, deck scuppers open, free of debris. [08/29/17] No change. 895 Sidewalk, Curb, & Median Routine 08/29/2017 1 EA 1 0 0 0 Notes: [08/29/17] Member added for timber curb, part of the timber rail system. Good condition throughout; CS -1. BRIDGE 27A34 81 (ENCHANTED LANE) OVER CHANNEL ELEM QTY QTY QTY QTY NBR ELEMENT NAME REPORT TYPE INSP. DATE QUANTITY CS 1 CS 2 CS 3 CS 4 899 Miscellaneous Items Routine 08/29/2017 1 EA 0 0 1 0 Underwater 09/07/2016 1 EA 1 0 0 0 Notes: [08/20/15] Element added. (3) separate conduits on the south side of the bridge. (1) 3" gas line, marked at east end of bridge; (1) 16" conduit (insulated water main ?); & (1) 4" conduit (galvanized ?). [08/29/17] Gas marker on east end of bridge, totally obscured by vegetation; no marker visible on the west end; downgrade to CS -3 for vegetation removal around this and object marker sign. 900 Protected Species Routine 08/29/2017 1 EA 0 1 0 0 Underwater 09/07/2016 1 EA 1 0 0 0 Notes: Use this element to track the presence of protected species living on this structure. [08/29/17] Swallow nests on bridge, CS -2. General Notes: [08/20/15] Inspection by WSB. [08/20/15] 40" clearance to bottom of spreader beam in Span 2. [08/20/15] 4' water depth in channel under Span 2. [08/20/15] Removed element 206. [08/20/15] Added element 228. [08/20/15] Added element 415. [08/20/15] Added element 981. [08/20/15] Vegetation growing at SW corner of bridge, nearly obstructing object markers, should be removed. [08/29/17] Inspection by WSB & Associates. Vegetation growing at SW & SE corner of bridge, nearly obstructing object markers, should be removed. [08/29/17] 2011 load rating does not include SHV load ratings. See BSIPM A.8.2: "Section 15.6 of the MnDOT LRFD Bridge Design Manual states that a new bridge load rating should be calculated whenever change occurs that would sufficiently change the rating. The most commonly encountered types of changes are: A change in the laws regulating truck weights." Owner should consider load rating bridge with updated SHV truck loads. 58. Deck NBI: [08/20/15] Timber slab covered by 3.5" bituminous wear course; no change. Measures 2" at the gutter line, 5" at CL bridge. [08/29/17] Recent bituminous /gravel wear course placed across approach road and bridge - no significant depth change. 36A. Brdg Railings NBI: [08/20/15] Change to substandard. [08/29/15] Barrier is standard for — 40 mph. 36B. Transitions NBI: [08/20/15] No change. [08/29/15] Change to substandard. 36C. Appr Guardrail NBI: [08/20/15] No change. [08/29/15] No change. 36D. Appr Guardrail [08/20/15] Change to substandard. Approach guardrail ends are turned down. Terminal NBI: [08/29/15] No change. 59. Superstructure NBI: [08/20/15] Timber slab covered by 3.5" bituminous wear course; bottom of timber slab stringers in very good condition in all spans, no change. [08/29/17] 4x10 approach span, 4x12 main span. 60. Substructure NBI: [08/20/15] No change. [08/29/17] No change. 61. Channel NBI: [08/20/15] No change. 40" freeboard to Span 2 spreader beam. [08/29/17] Downgrade to 8, bridge no longer in 'new' condition. 62. Culvert NBI: [08/20/15] No change. [08/29/17] No change. 71. Waterway Adeq NBI: [08/20/15] No change. [08/29/17] No indications of high -water anywhere near low bridge member. 72. Appr Roadway [08/20/15] No change. Alignment NBI: [08/29/17] No change. Daniel Flittie Inspector's Signature Craig Alberg Reviewer's Signature Pictures Photo 1 - New bituminous /aggregate wearing surface on bridge and approach slab. �. 4 f a+ Photo 2 - Typical wearing surface cracks over piers. Pictures Photo 3 - 3 conduits on south side of bridge. low, P" Photo 4 - Typical timber railing. Pictures Photo 5 - West approach. Photo 6 - East approach. Pictures 77�-- Photo 7 - South channel. Photo 8 - North channel. 6E Pictures Photo 9 - Western guardrails. . t, . iiyll.. MF�w 10 140 Photo 10 - Eastern guardrails. 10 Pictures Photo 11 - East abutment and channel protection. Photo 12 - East face, Pier 2. 11 Pictures t. Photo 13 - Span 3; timber spreader beam. Photo 14 - Span 3, bottom of slab. `V Pictures Photo 15 - Gas marker, SE corner of bridge, totally obstructed by vegetation. Photo 16 - West abutment and channel protection. 13 Pictures Photo 17 - West face, Pier 1. Photo 18 - Span 1 spreader beam. `C! Pictures Photo 19 - Span 1, bottom of timber slab. Photo 20 - Timber pier cap, Pier 2. 15 Pictures Photo 21 - Bottom of timber slab, Span 2. [i Photo 22 - West face, Pier 2. 16 r4til��r 'J ftr •..i: x c� f t . I{�Q Pictures r. r 'x Photo 23 - Span 2 spreader beam. Photo 24 - Looking NW. 17 1. 170829 27A34 comp_ (001).JPG 6. 170829 27A34_comp_ G (6).JP 2. 3. 170829 27A34_comp_ 170829 27A34_comp_ (2).JPG (3).JPG � oh 4. 170829 27A34_comp_ (4).JPG 7. 170829 27A34_comp (7).JPG 8. 170829 27A34_comp_ (8).JPG 9. 170829 27A34_comp_ (9).JPG 11. 170829 27A34_comp_ (11).JPG 13. 170829 27A34_comp_ (13).JPG 16. 170829 27A34_comp_ (16).JPG 17. 170829 27A34_comp_ (17).JPG 18. 170829 27A34_comp_ (18).JPG 14. 170829 27A34_comp_ (14).JPG 19. 170829 27A34_comp_ (19).JPG 21. 22. 23. 170829 27A34_comp_ 170829 27A34_comp_ 170829 27A34_comp_ (21).JPG (22).JPG (23).JPG 24. 170829 27A34_comp_ (24).JPG i S. 170829 27A34_comp_ (5).JPG I 10. 170829 27A34_comp_ (10).JPG 15. 170829 27A34_comp_ (15).JPG 20. 170829 27A34_comp_ (20).JPG FORM RC -CL KA F Ind DO T BRIDGE RATING AND LOAD POSTING REPORT Revised Aug. 2010 FOR COUNTY AND LOCAL AGENCIES Bridge Location and Description Over ® Bridge No. 27A34 Hwy. No. 81(Enc. Ln.) under❑ Channel Year Built 1997 Year Remodeled Replaces Br. Type 709 County Hennepin Ref. Pt. 000+000.00 Description 3 -span, 16' - 20' - 16', 22' -8" out to out, 20' roadwway Timber slab span, Iii" - 12" - 10" thickness respectively, 4" Bituminous Overlay Location Enchanted Lane to Shady Island, City of Shorewood, sec 30, twp 117, rge 23W Data for Basis of Report (Check all that apply.) NBI Condition Ratings Deck 9 ® Bridge Inventory File Superstructure 8 ® Previous Bridge Rating and Load Posting Report Substructure 8 ® Bridge Plans ® New ❑ Overlay ❑ Repair /Reconstruction ❑ Other Dead Load Modifications ® Bridge Inspected by City of Shorewood ,date 09/14/09 ❑ Damaged Component ❑ Deteriorated Component Types of Analysis: ❑ Manual ❑ Computer* ❑ BARS ® Virtis, V.662 ❑ Other* Method of Rating (Check appropriate box) ❑ Load Factor (LF) Design Load HS -25 ® Allowable Stress (AS) ❑ Load & Resistance Factor (LRFR) ❑ Load Testing Design Method ASD ❑ No Rating Computations performed Summary of Rating and Load Posting Analysis Load Posting Required ❑ Bridge Rating Not Required Inventory Operating Sign TONS R12 -1A ❑ HS ® H5 R12 -5a ❑ RF ❑ 26.5 RF ❑ 36.58 M3 R12 -5 ❑ M3S2 45 M3 -3 R12 -X11 ❑ SMM I hereby certify that this report was prepared by me or ugder my direct supervision and that I am a duly Licensed Professionai Engineer under the laws State of nesota. Signature: Date: 7/26/11 (Typed or Printed) ame: Aar elson License No. 43101 (Typed or Printed) Employed by (Agency /Firm): WSB & Asst ates, Inc. r3 eeieFed 1 Q 07 1 L FORM RD -CL Revised May 2010 Bridge Type 701 Rating Method ASD Roadway Width 20' -0" ❑ Curved ❑ Tapered Beam Spacing NA Live Load Distribution Lane Width Single 10 Multiple 10 BRIDGE RATING DETAILS Bridge No. 27A34 Design Load: HS -20 Inventory Rating: HS- 26.5 Operating Rating: HS- 35.58 Rated A] N Checked Date: 7/26/11 Sheet 2 of 3 BEAM ELEVATION 2 Show span lengths, structure /beam depths. Truck Factor Location Limit State 1 Notes /Comments HS 20 Inventory 1.325 Span1 Ultimate Moment Exterior 1ft section, at center of span HS 20 Operating 1.829 Span1 Ultimate Moment Exterior 1ft section, at center of span Post, M 3 Post, M 3S2 Post, M 3 -3 Type SU4 Type SU5 Type SU6 Type SU7 1 Choose from: service or ultimate; shear or moment 2 Elevation may be on back or another sheet if it won't fit here. page-29 of 3 entered 10 -07 -2011 LH END IiBNTIIEHi £ PIER 1 4 pf�li'IEL 4 PIER t ENO OF OEC[ 1 I EAST A WTWNI I I i i I i 1 s E I I 1• ! l A I r I f Ilt il r l I woo'ro• [lip.; I i I i r' r - - - - - - - - I I 1 I — II l 4 RgA1}x0.Y - — - - — • I I T a — - I — - �i _ I I I - - - - - - i l i I 1�1 I I I f I I I I I RAIUDIf IC IWIDT WO. GENERAL PLAN f� = GENERAL ELEVATION SHADY ISLAND BRIDGE TINUR OCCK PAREl. OPTION FINfSREO ME RMVAY cs � � - -« -- '2 \ � ? ? ?, ? ? ? ? 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