2019 Bridge No. 27A34MnDOT Bridge Rating Contract — Contract No, 1026817
Hennepin County Bridge No. 27A34
Page 1 of 3
f,
Load bating Report
For
Bridge No. 27A34
Hennepin County
MUN 81 (Enchanted Lane) over Channel
Mn/DOT Contract No. 1026817
Report Prepared By
Widseth Smitli Nolting & Associates, Inc.
Alexandria
610 Fillmore Street
PO Box 1028
Alexandria, MN 56308 -1028
320.762.8149
320.762.0263
Alexandria@wsn.us.com
W idseth5mlthNoiting.com
I hereby certify that this report was prepared by me or under my direct supervision and
that I am a duly Licensed Professional Engineer under the laws of the State of Minnesota.
Ket PA,R h r, P.
E.
21179
License No.
Date
Engineering Architecture Surveying
Environmental
Recommended Rating and Load Posting: (with consideration of Special Hauling Vehicles)
Inventory Rating: HS 23.7
Operating Rating: HS 32.6
Recommended Load Posting: None Required
Load Rating Notes:
• Load capacity ratings shown are based on Virtis (v6.8) rating using Girder Line Analysis
• Used timber allowable bending stress fb = 1500 psi
• Used 20" tire contact width for LL Dist, Width calculations for analysis of HS Vehicles
• Used 15" tire contact width for LL Dist. Width calculations for analysis of Posting Vehicles
• LL distribution factors have been manually input into Virtis
• Curb, rail and wearing surface dead loads have been distributed uniformly across slab width
BridlZe Condition Summary:
Bridge No, 27A34 is a 3 -span nail laminated timber slab span bridge supported on timber
pile -bent style abutments and piers. The total length of the bridge from back face of
abutment to back face of abutment is approximately 52' -0 ". A span layout of 15' -6 "/
20'- 0 "/15' -6" (between centerlines of substructures) was considered for the load rating
calculations. The total width of the bridge slab is 24' -0 ". Timber curbs and scuppers
measured at each edge of the bridge constrict the roadway width to 20' -0 ". Plans were not
made available for this structure prior to completing the load capacity rating.
The timber slab consists of approximately 4" wide timber laminations that run parallel to the
centerline of the roadway and span between the bridge substructure units, The individual
timbers are nailed together in a specified pattern to create the timber slab which carries
traffic across the bridge. The timber slab was measured in the field to be 10" thick for spans
1 & 3 and 12" thick for span 2. There was a 3 1/2" thick average bituminous wearing course
present on the bridge slab at the time of the inspection and was considered for the load
capacity rating.
The top of the timber slab was not visible due to the wearing course atop the bridge, The
underside of the timber slab was in very good condition overall. The slab contained minor
weathering. The bituminous wearing course contains minor transverse and longitudinal
cracks. The timber spreader beams were tight to the underside of the timber slab
superstructure, and the standard live load distribution width for this type of structure was
used in the load rating calculations. The spreader beams were in good condition with minor
horizontal splitting present. The timber railing was in good condition with minor splitting
KInDor Bridge Ruing Contract -- Contract No. 1026817 T
Hennepin County Bridge No. 27A34 V V IDS1ETH
Page 3 of 3 SMITH
N®L'TING
present. The timber posts contain some moderate sized vertical cracks.
The timber pile -bent style abutments each consist of a square timber cap supported atop 8
round timber piles. Each wingwall is supported by an additional pile. Approximately 2 -3'
feet of piling was exposed above the in -slope at each abutment. The amount of rip rap
protection on the in- slopes was adequate. The timber abutment caps were in very good
condition with minor horizontal splitting present. No crushing was found during inspection.
The timber piling contain minor vertical splitting. There was minor horizontal splitting
found on the timber backing planks, The wingwalls contained minor splitting. Both
abutments appeared to be performing as intended. The abutments are adequately supporting
the superstructure loads, and there is no need to downgrade the load rating or posting due to
the condition of the bridge abutments,
The timber pile -bent style piers each consist of a square timber cap supported atop 8 timber
piles. The piers contain cross bracing to brace for pier pile sway. The piles contain minor
vertical splitting but are in very good condition. There is a timber beam in between the
upstream piles to support the piers from impact damage. The timber pier caps have
experienced some minor horizontal splitting. The bridge piers are adequately supporting the
loads from the superstructure, and there is no reason to downgrade the load rating or posting
due to the condition of the piers,
The load rating and load posting calculations for this structure are controlled solely by the
capacity of the timber slab superstructure. The load posting analysis for this bridge results in
values which do not require this bridge to be posted according to current Mn /DOT load
posting guidelines. The capacity of the bridge is adequate to support the posting vehicles
currently being used by Mn/DOT. Also, there are no restrictions on overweight vehicles.
Report Attachments
• Mn /DOT Forms RC -CL & RD -CL
• Virtis Rating Results Summary Report
• Bridge Inspection Notes
• Annotated MnDOT Structure Inventory Report
• Annotated MnDOT Bridge Inspection Report
• Bridge photos taken during inspection
Bridge Type 709
Rating Method ASR
Roadway Width 20' -0"
❑ Curved ❑ Tapered
Beam Spacing
® Live Load Distribution Factor
Single See Below Multiple See Below
❑ Finite /Grid Element Analysis
Bridge No. 27A34
Design Load: HS -25
Inventory Rating: HS 23.7
Operating Rating: HS 32.6
Rated AJM Checked DAN
Date 6/14/2019
Sheet of
3.5" Bituminous Wearing Surface atop a 10" (Span 1 & 3) and 12"
(Span 2) Thick Timber Slab
Emergency3 Rating Span/
Vehicles Factor Pier Location Limit State Z Notes /Comments
EV2 1.363 1 0.5 Ultimate Moment LLDF = 0.3429
EV3 0.981 1 0.6 Ultimate Moment LLDF = 0.3429
1 Elevation may be on back or another sheet if it won't fit here.
2 Choose from: service or ultimate; shear or moment
3 For information onlv
15'4" 20' -0" 15' -6"
Span 1 Span 2 Span 3
BEAM ELEVATION 1
Show span lengths, structure /beam depths.
Truck
Rating
Factor
Span/
Pier
Location
Limit State Z
Notes /Comments
HS 20 Inventory
1.188
1
0.5
Ultimate Moment
LLDF = 0.3
HS 20 Operating
1.632
1
0.5
Ultimate Moment
LLDF = 0.3
M3
1.789
1
0.6
Ultimate Moment
LLDF = 0.3429
M3S2 -40
1.789
1
0.6
Ultimate Moment
LLDF = 0.3429
M3S3 -40
1.785
1
0.5
Ultimate Moment
LLDF = 0.3429
SU4
1.570
1
0.5
Ultimate Moment
LLDF = 0.3429
SU5
1.569
1
0.5
Ultimate Moment
LLDF = 0.3429
SU6
1.558
1
0.6
Ultimate Moment
LLDF = 0.3429
SU7
1.558
1
0.6
Ultimate Moment
LLDF = 0.3429
Emergency3 Rating Span/
Vehicles Factor Pier Location Limit State Z Notes /Comments
EV2 1.363 1 0.5 Ultimate Moment LLDF = 0.3429
EV3 0.981 1 0.6 Ultimate Moment LLDF = 0.3429
1 Elevation may be on back or another sheet if it won't fit here.
2 Choose from: service or ultimate; shear or moment
3 For information onlv
FORM RD-CL
BRIDGE TIN DETAILS
Revised Mar. 2 017
Annual /Routine
No
Restriction
Straddle Two
Lanes
5% Impact
Notes /Comments
Permit
Rating Factor
Rating Factor
Rating Factor
STD. A
1.450
1.450
1.450
STD. B
1.160
1.160
1.160
STD. C
1.285
1.285
1.285
6 -axle, 90k -99k
1.656
1.656
1.656
7 -axle, 97k -99k
1.674
1.674
1.674
Special /Single
No
Straddle Two
5% Impact
Permit
Restriction
Lanes
Notes /Comments
Rating Factor
Rating Factor
Rating Factor
P411
1.209
1.209 **
1.209
P413
1.160
1.160 **
1.160
C152b
1.084
1.084 **
1.084
C174b
1.575
1.575 **
1.575
C214b
1.242
1.242 **
1.242
C237b
1.328
1.328 **
1.328
C256b
1.336
1.336 **
1.336
C200j
1.242
1.242 **
1.242
OVERWEIGHT PERMIT RESTRICTIONS FOR LOCAL BRIDGES
Restriction
Restriction
Special/
Annual/
Code
Description
Single
Routine
Detailed Restriction Description
Bridge Check Operation
Permit
Permit
1
None
YES
YES
No Restriction to cross bridge
Normal
Drive on the centerline between
The AASHTO "Single Lane" live
two lanes, in a manner that
load distribution is used. This
Straddle
prevents any other vehicle from
operation app lies to all permit
2
Two Lanes
YES
YES
occupying a part of either lane on
vehicles when perforrrling LFR
either side of the permit vehicle,
method or only to annual
Drive in the center of a single lane
permit vehicles when
bridge.
performing LRFR method.
Maximum
YES
YES
The impact factor is reduced
3
speed of
O
O
Drive at a speed of 10 mph or less
from the AASHTO impact to
10 mph
5%
X
DENIED
YES
YES
The overweight permit vehicle is
Used when requirements for
NOT ALLOWED on this bride
restriction 1 thru 3 are not met
Not allowed where there is a posted minimum speed.
**
"N /A ", Does not apply when performing LRFR method, ref. AASHTO MBE Table 6A.4.5.4.2a -1
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CALCULATED BY A DATE /I
CHECKED BY PAM' DATE 6-10- M/
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Bridge No:
Date:
Inspection Checklist : Superstructu e
D7 A '34 County:
Time In: '( D- Time Out:
Bridge Type:
? Iwo
Deck Type:
Deck Thickness:
Wear Course Type:
WC Thickness:
Out-Out Br Length:
FF Abut to FF Abut Dist:
5o' 9
No. of Spans
Span Lengths:
6. 6'/,
Br. Out-Out Width:
0
Roadway Width:
Curb/Rail Type:
�e
Beam Type:
No. of Beams:
Beam Spacing:
Int. Bays:
Ext. Bays:
Beam Dimensions:
Super. Condition:.
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A
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Review Struot. Inv. El
RevlewCond. Codes Cl
Inspection Checklist e Substructure
Bridge N ®: -1A 3H
County:
Date Time In.-, Time Out:
M
,4but.'iype & Condition; �1
v�
_ �a e
_ `� l , �, 1 � � � � a � � � � ` ��' �' °-•ter � �� -
Pier Type & Condition T`� le ._a
t
MINNESOTA STRUCTURE INVENTORY REPORT
Bridge _.. A . i ` 1, over -- f ,
+ G E N E R A L +
Agency Br. No.
District METRO Maint, Area
County 27 - HENNEPIN
City SHOREWOOD
Township
Desc. Loc. TO SHADY ISLAND
Sect., Twp., Range 30 - 117N - 23W
Latitude 44d 54m 43.19s
Longitude 93d 38m 10.88s
Custodian CITY
Owner CITY f
Inspection By CITY OF SHOREWOOD
Year Built 1997
MN Year Remodeled
FHWA Year Reconstructed
Bridge Plan Location CENTRAL
Potential ABC N.A.
I + STRUCTURE +
II Se- rvice On HIGHWAY
Jervice Under STREAM
Main Span Type TIMB SLAB SPAN
Main Span Detail
Appr. Span Type
Appr. Span Detail
Skew
Culvert Type
Barrel Length
Number of Spans %
MAIN: 3 APPR: 0 TOTAL: 3 ✓
Main Span Length 20.0 ft V/
Structure Length 52.0 ft I/
Deck Width 24.0 ft I/
Deck Material TIMBER J
Wear Surf Type BITUMINOUS
Wear Surf Install Year
Wear Course /Fill Depth 0.29 ft
Deck Membrane NONE
Deck Rebars N/A
Deck Rebars Install Year
:ructure Area 1,248 sq ft
Roadway Area 1,044 sq ft
Sidewalk Width - L/R
Curb Height - L/R
Rail Codes - L/R 06 06
+ ROADWAY +
Bridge Match ID (TIS) 1
Roadway O/U Key 1 -ON
Route Sys /Nbr MUN 81
Road Name MUN 81
National Highway System N
Roadwav Function MAINLINE
Roadway Type 2 WAY TRAF
Control Section (TH Only)
Ref. Point
Date Opened to Traffic
Detour Length 99 mi.
Lanes 2 Lanes ON Bridge
ADT (YEAR) 260 (1988)
HCADT
Functional Class. URBAN LOCAL
+ R D W Y D I M E N S I O N S +
If Divided NB -EB SB - -WB
Roadway Width 20.0 ft �"/
Vertical Clearance
Max. Vert. Clear.
Horizontal Clear.
Lateral Clr. - LURt
Appr. Surface Width 20.0 ft
Bridge Roadway Width 20.0 It
Median Width on Bridge
+ M I S C. B R 1 D G E D A T A +
Structure Flared NO
Parallel Structure NONE
Field Conn. ID
Cantilever ID
Foundations `
Abut. TIMBER -PILE BENT �!
Pier TIMBER - PILE BENT
Historic Status NOT ELIGIBLE
On - Off System OFF
+ P A I N T +
Year Painted Pct. Unsound
Painted Area
Primer Type
Finish Type
+ B R I D G E S I G N S +
Posted Load NOT REQUIRED
Traffic NOT REQUIRED
Horizontal OBJECT MARKERS
Vertical NOT APPLICABLE
Page 1 of 4
Date: 12/20/2017
+ I N S P E C T 1 O N +
Deficient Status ADEQ
Sufficiency Rating 74.6
Last Inspection Date 08 -29 -2017
Inspection Frequency 24
Inspector Name CITY OF SHOREWOOD
Status A -OPEN
+ N B 1 C O N D I T I O N R A T I N G S +
Deck
8 V"'
Superstructure
8
Substructure
8
Channel
8
Culvert
N
+ N B I A P P R A I S A L R A T I N G S +
Structure Evaluation
8
Deck Geometry
4
Underclearances
N
Waterway Adequacy
9
Approach Alignment
8
+ S A F E T Y F E A T U R E S +
Bridge Railing 1 -MEETS STANDARDS
GR Transition 0- SUBSTANDARD
Appr. Guardrail 1 -MEETS STANDARDS
GR Termini 0- SUBSTANDARD
+ I N D E P T H I N S P. +
Frac. Critical N
Underwater Y 60 mo 09/2016
Pinned Asbly. N
I + WATERWAY + I
Drainage Area
Waterway Opening 200 sq It
Navigation Control NO PRMT REQD
Pier Protection
Nay. Vert. /Horz. Clr.
Nay. Vert. Lift Bridge Clear.
MN Scour Code I -LOW RISK
Scour Evaluation Year 2001
+ C A P A C I T Y R A T I N O S +
Design Load HS 25
Operating Rating HS 36.60
Inventory Rating HS 26.50
Posting
Rating Date 07 -26 -2011
Overweight Permit Codes
A: N B: N C: N
RM—INV ORYEUB RB RT.R
12/20/2017
MINNESOTA I INSPECTION
Inspected by: CITY OF SHOREWOOD
BRIDGE 27A34 81(ENCHANTED LANE) OVER CHANNEL INSP. DATE: 09 -29 -2017
,unty: HENNEPIN
City: SHOREWOOD
Location: TO SHADY ISLAND
Route: MUN 81 Ref. Pt.: 000 +00.000
Township: Control Section: Maint. Area:
Section: 30 Township: 117N Range: 23W Local Agency Bridge Nbr:
Span Type: TIMB SLAB SPAN
NBI Deck: 8 Super: 8 Sub: 8 Chan: 8 Culv: N Open, Posted, Closed: OPEN
Appraisal Ratings - Approach: 8 Waterway: 9 MN Scour Code: ]-LOW RISK
Required Bridge Signs - Load Posting: NOT REQUIRED Traffic: NOT REQUIRED
Horizontal: OBJECT MARKERS Vertical: NOT APPLICABLE
ELEM
NBR ELEMENT NAME INSP. DATE QUANTITY
800 CRITICAL DEFS OR SAFETY HAZARDS 08 -29 -2017 1 EA
08 -20 -2015 1 EA
Page 2 of 4
Length: 52.0 ft
Deck Width: 24.0 ft
Rdwy. Area / Pct. Unsnd: 1,044 sq ft
Paint Area / Pct. Unsnd:
Culvert: N/A
Def. Stat: ADEQ Suff. Rate: 74.6
QTY QTY QTY QTY
CS 1 CS 2 CS 3 CS 4
Notes: NO CRITICAL FINDINGS OBSERVED DURING THE LAST INSPECTION.
[08/20/15] No change.
[08/29/17] No change.
54 TIMBER SLAB 08 -29 -2017 1,152 SF 1,152 0 0 0
08 -20 -2015 1,248 SF 1,248 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. 410 approach span, 412 main span.
510 WEARING SURFACE 08 -29 -2017 1,053 SF 1,049 4
0 0
08 -20 -2015 1,044 SF 1,044 0
0 0
Notes: (08120115] Roadway field measures 20' -3" + (2) 11 "rub rails, OTO width= 22'4 ". OTO bridge field measures 52' -07. Slab
Area = 1148 sf.
[08129117] Recent bituminous/gravel wear course placed across approach road and bridge - no significant depth change;
good condition.
(08129117] 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.
332 TIMBER BRIDGE RAILING 08 -29 -2017 104 LF 104 0
0 0
08 -20 -2015 104 LF 104 0
0 0
Notes: [08/20/15] No change.
[08/29/17] No change.
822 BITUMINOUS APPROACH ROADWAY 08 -29 -2017 2 EA 2 0
0 0
08 -20 -2015 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.
216 TIMBER ABUTMENT 08 -29 -2017 92 LF 92 0
0 0
08 -20 -2015 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 PILING 08 -29 -2017 36 EA 36 0 0 0
08 -20 -2015 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.
z35 TIMBER PIER CAP 08 -29 -2017 120 LF 120 0 0 0
08 -20 -2015 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.
Page 3 of 4
855 SECONDARY MEMBERS (SUPER) 08 -29 -2017 1 EA 1 o n n
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 08 -29 -2017 1 EA 1 0 0 0
08 -20 -2015 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 08 -29 -2017 1 EA
08 -20 -2015 1 EA
Notes: [08/29/17] Member added for timber curb, part of the timber rail system. Good condition throughout; CS -1.
899 MISCELLANEOUS ITEMS 08 -29 -2017 1 EA
08 -20 -2015 1 EA
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 le
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
08 -29 -2017 1 EA
08 -20 -2015 1 EA Jd
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 [08/20/15] Inspection by WSB.
Notes: [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.
Deck: [8] [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.
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 08 -29 -2017 1 EA
1 0
0
0
08 -20 -2015 1 EA
1 0
0
0
Notes: [08/20/15] No change, channel slopes well protected.
[08/29/17] No change.
893
GUARDRAIL 08 -29 -2017 1 EA
1 0
0
0
08 -20 -2015 1 EA
1 0
0
0
Notes: [08/20/15] No change.
[08/29/17] No change.
894
DECK & APPROACH DRAINAGE 08 -29 -2017 1 EA
1 0
0
0
08 -20 -2015 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 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.
899 MISCELLANEOUS ITEMS 08 -29 -2017 1 EA
08 -20 -2015 1 EA
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 le
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
08 -29 -2017 1 EA
08 -20 -2015 1 EA Jd
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 [08/20/15] Inspection by WSB.
Notes: [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.
Deck: [8] [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.
Brdg [1] [08/20/15] Change to substandard.
Railings: [08/29/15] Barrier is standard for — 40 mph.
Transitions: [0] [08/20/15] No change.
[08/29/15] Change to substandard.
Appr [1] [08/20/15] No change.
Guardraill: [08/29/15] No change.
Appr Guardrail [0] [08/20/15] Change to substandard. Approach guardrail ends are turned down.
Terminal : [08/29/15] No change.
Superstructure: [8] [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.
Substructure: [8] [08/20/15] No change.
[08/29/17] No change.
Channel: [8] [08/20/15] No change. 40" freeboard to Span 2 spreader beam.
[08/29/17] Downgrade to 8, bridge no longer in 'new' condition.
Culvert: [N] [08/20/15] No change.
[08/29/17] No change.
Waterway [9] [08/20/15] No change.
Adeq: [08/29/17] No indications of high -water anywhere near low bridge member.
Appr Roadway [8] [08/20/15] No change.
Alignment: [08/29/17] No change.
44"_
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