Bridge_Insp_Rpt.pdf

Bridge Number:

Region 3

TREMPEALEAU NATIONAL WILDLIFE REFUGE

ENTRANCE ROAD

Type of Inspection:

BRIDGE INSPECTION AND APPRAISAL REPORT

Date of Inspection:

32578-00043

Routine

Date of Report:

07/15/2017

08/23/2017

Prepared by: Short Elliott Hendrickson, Inc.

U.S. Fish & Wildlife ServiceSubmitted by:

U.S. Fish & Wildlife Service

GEOCAL, Inc.

Division of Engineering

Dam, Bridge & Seismic Safety Branch

Arlington, VA

MAPS 2

BRIDGE IDENTIFICATION, USE, SUMMARY OF FINDINGS 3

RECOMMENDED WORK AND ESTIMATED COSTS 4

SIGN RECOMMENDATIONS AND LOAD RATINGS 6

ADDITIONAL INFORMATION AND COMMENTS 7

CONDITION RATINGS 8

SKETCHES 15

PHOTOGRAPHS 17

TYPICAL SIGNS 24

RATING VEHICLES 25

PAGESECTION

TABLE OF CONTENTS

Station: TREMPEALEAU NWR

Bridge Name: ENTRANCE ROAD

Bridge Location: SEC 12, T18N, R10W

Road on Bridge: ENTRANCE ROAD

Feature Crossed: TREMPEALEAU RIVER

Region: 3

State: Wisconsin

Bridge Identification and Location

County: Trempealeau

Bridge Number: 32578-00043

Bridge Features

Main Structure Type: 504 - Prestressed

Deck Type:

Deck Surface:

Year Built:

Year Rebuilt:

Type Construction/Materials:

Width (Curb-Curb):

1 - Concrete cast-in-place

6 - Bituminous

Prestressed concrete double tee girders on concrete cap on steel piles at bents & abutments.

0026.5

Width (Out-Out):

No. of Main Spans:

Max Span Length:

Total Length:

0030.0

000044

0000136

Bridge Use

In-Use (Y/N): Y

Public Use (Y/N):

Type Use:

Average Daily Traffic (ADT):

Y

The bridge carries the entrance road providing the primary access for FWS and public to the central portion of the refuge.

000120

Summary of Findings

The summary condition of the bridge is 'GOOD'.

Moderate sand at parapets on bridge deck restricts drainage slightly. Vegetation is growing over front of approach rails and over the road at the southwest corner. Boat launch adjacent to bridge closed due to emergency flood conditions.

Lead Inspector:

Inspector Organization:

John B. Butt, P.E.

Short Elliott Hendrickson, Inc.

Date of Inspection:

Date of Report:

07/15/2017

08/23/2017

Asset Number: 10011914

Ft.

Ft.

Ft.

Ft.

Year of ADT: 17

Bridge Identification, Use, Summary of Findings

32578-00043 08/23/20173

Estimated Remaining Life (Years):

(At current load limits without major repairs or rehabilitation.)

........................................................................... > 10

# of Recommendation Items: 2

Recommended Work and Estimated Costs

1 Periodically cut the vegetation along the shoulders especially at the corners of the bridge to maintain visibilty. Mower and Operator: 2 Hours at /hour =

, Adjustment for Location: None.

Construction Estimate:

a.

b. Construction Contingency:

f. Subtotal:

c. Planning/Design/ Const. Mgmt.:

Const. Mgmt.:

d.

(See footnote 2)

(See footnote 3)

Planning/Design:

(See footnote 3) e.

G.A.S.:

Project Total for Year of Estimate

2015 :

g.

h.

Urgent Item

Escalation for Current Year

2017 :

i.

Escalation for Future Year

2019 :

j.

2 Remove sand debris from bridge deck to improve drainage. Labor: 4 Hours at /hour = , Adjustment for Location: None

Construction Estimate:

a.

b. Construction Contingency:

f. Subtotal:

c. Planning/Design/ Const. Mgmt.:

Const. Mgmt.:

d.

(See footnote 2)

(See footnote 3)

Planning/Design:

(See footnote 3) e.

G.A.S.:

Project Total for Year of Estimate

2011 :

g.

h.

Urgent Item

Escalation for Current Year

2017 :

i.

Escalation for Future Year

2019 :

j.

Totals

1/Recommended work are items noted by the inspection team on the date of inspection. Urgent items are those which pose a current threat to the strength or stability of he bridge, or involve a significant safety concern. Items are listed in their order of importance. Item 1 considered most important. Adjustments for location include geographical region and remoteness of the bridge adjustment. For multi-use structures such as water control structures or dam spillways, repair or reconstruction estimates, if applicable, are for the bridge component only.

4/Priority assessment value is a representation of the relative priority of a recommendation, wi h a value of 1 representing the highest priority and 7 representing the lowest priority.

3/Items d. and e., when needed, are used for replacements, and work items over in construction value, and use a sliding scale based on the construction estimate. If the item is accomplished by MMS, the mark-up should be adjusted accordingly.

2/Item c., when needed, is used for items up to in construction value, except replacements, and includes a mark-up of approximately 18% assuming MMS program accomplishment. If the item is accomplished by other than MMS, the mark-up should be adjusted accordingly.

Footnotes:

Item Recommendation (See Footnote 1) Priority Assessment

Maint/Repair/ Rehab

Replacement

32578-00043 08/23/20174

Item Recommendation (See Footnote 1) Priority Assessment

Maint/Repair/ Rehab

Replacement

Item 2 is intended to preserve the current overall condition of the bridge and extend its useful life to the maximum extent possible. Lack of corrective action now will likely result in the general deterioration of the bridge which will accelerate the need for replacement.

Work Recommendation Remarks

32578-00043 08/23/20175

Project leaders (and others) should be aware that the posting recommendations are for the absolute maximum load

PRE-STRESSED

DOUBLE TEE

TYPE 3-3 (40T)

TYPE 3S2 (36T)

TYPE 3 (25T)

TYPE HS 20-44

AASHTO TRUCK

TYPE

INV

Sign Recommendations

No load posting required. Install object markers at all corners of the bridge.

Sign Recommendations

Load Ratings (Tons)

Bridge Element

INV = Inventory Rating

Load Rating Remarks

PRESTRESSED DOUBLE TEE: Precast prestressed concrete double tee girders with 2" asphalt, spanning (3) simple spans at 43'-7" each, Flange = 7" thick x 6'-0" wide, Stems are 1'-10" deep x 6" wide at the bottom and 8" wide at the top, Spacing = 4'-0". Stresses Used: Concrete compressive stress = 6,000 psi, Prestressed yield stress = 270,000 psi.

Todd Stueve, 7/3/97RATING PREPARED BY:

INV OPER INV OPER INV INVOPER OPER OPER

50.7 89.5

OPER = Operating Rating

Load posting sign recommendations are based on operating ratings. See note regarding posting recommendations below.

RATING VERIFIED BY: John Butt, 7/25/17

Object markers are in place.

Sign Status

The load rating from 1997 is still considered valid. No significant changes in the condition of the bridge which would affect the rating were observed during the 2017 inspection. The load capacity and weight limit posting recommendations remain as shown above.

Sign Recommendation Remarks

Important Note Regarding Posting Recommendations levels to which a structure may safely be subjected for limited passages of the loads. Should the need arise to subject the bridge to sustained loading at or near this level, the Project Leader should contact the Regional Engineer for guidance regarding an appropriate safe load capacity.

Sign Recommendations and Load Ratings

32578-00043 08/23/20176

Description of Bridge

The bridge was constructed in 1994 and consists of three spans of simply supported prestressed concrete double tee girders with an asphalt wearing surface. The spans are supported on concrete cap and steel pipe piles at the bents and abutments.

Comparison to Previous Inspection

Next Inspection

Additional Comments

There are no significant changes in the condition of the bridge since the previous inspection. Tree branches are encroaching into the roadway at the southwest corner. Southeast approach shoulder has heavy erosion approximately 100' from bridge. Rot in approach rail posts has progressed and is severe in some posts.

The next inspection for this bridge is recommended as a routine inspection with a full report in two years.

Additional Information and Comments

32578-00043 08/23/20177

CONDITION RATINGS

9 -

N/A.

Excellent Condition.

8 - Very Good Condition - no problems noted.

7 - Good Condition - some minor problems.

6 - Sa isfactory Condition - structural elements show some minor deterioration.

5 - Condition - all primary structural elements but may have minorFair section loss, cracking, spalling, or scour.

4 - Poor Condition - advanced section loss, deterioration, spalling, or scour.

3 - Serious Condition - loss of section, deterioration, spalling, or scour have seriously affected primary structural components. Local failures are possible.

Fatigue cracks in steel or shear cracks in concrete may be present.

2 - Critical Condition - advanced deterioration of primary structural elements.

Fatigue cracks in steel or shear cracks in concrete may be present or scour may have removed substructure support. Unless closely monitored it may be necessary to close the structure until corrective action can be taken.

1 - Imminent Failure Condition - major deterioration or section loss present in critical structural components or obvious vertical or horizontal movement affecting structure stability. Structure is closed to traffic but corrective action may return structure to light service.

0 - Failed Condition - out of service; beyond corrective action.

Note - Items left blank are not applicable for this bridge.

N -

Condition Rating Codes for Items 218, and 58 through 62:

RATING

218.1 Approach Slab

Overall Rating (218) Good.7

218.2 Relief Joints

218.3 Approach Guardrail

Galvanized "W" beam rail on treated timber posts, blocked out.

Light to moderate rot in most posts and backer blocks. Heavy rot in fourth post from bridge at northeast. Few blocks rotated.

218.4 Surfacing

Gravel at north, asphalt at south. Crack 7' behind south abutment has been sealed but sealant is no longer effective.

218.5 Embankment

1/2" low at south end of bridge.

218.6 Signs Brass plaque in rail at southeast corner; "U.S. Fish and Wildlife Service, Wisconsin, 1994"."No diving" signs on northwest and southeast object marker posts. "Speed Limit 25 MPH" 100 Yds in advance at both ends. Oversized object markers, black and yellow, at all four corners, are in accordance with MUTCD.

218.7 Vegetation Grass along shoulders. Bushes and trees overhang southwest corner. Vegetation is beginning to overgrow the approach rail.

ITEM REMARKS

Good

Good

Good

Good

Good

Approaches (218)

32578-00043 08/23/20178

RATING

58.1 Deck Structure 7 Flange of double tees - Hairline cracks, some with efflorescence in edges of deck above bents. Minor spalls and stains around deck drain pipes on underside. Minor spalls at south end of deck. Slight leakage at joints between double tees in a few scattered areas.

Overall Rating (58) Good condition (some minor problems).7

58.2 Expansion Joints

58.3 Wearing Surface Asphalt - Chip sealed between 1997 and 1999 inspections.

Narrow diagonal crack in asphalt over north pier at centerline road, narrow longitudinal cracks west and east of centerline, narrow transverse cracks about 4' to 5' spacing. About 1/2 the cracks have been sealed.

58.4 Rideability

58.5 Curbs

58.6 Parapets/railings

Concrete Jersey barrier with grey colored concrete coating, relief joints at bents and 1/3 points - Minor vertical hairline cracks, some with light efflorescence, in rail at approximately 5' spacing. Minor 1" deep x 4"x 6" spall in west rail 12' north of south pier. Repaired and repair is cracked.

58.7 Drains/drainage

Drains through deck at south side of each bent and in front of abutments each side.

58.8 Cleanliness Moderate sand and debris with some vegetation in front of both rails and about 2' at north end.

58.9 Utilities Electric conduit through east rail.

58.10 Lighting

ITEM REMARKS

Good

Good

Good

Good

Good

Good

Good

Deck (58)

32578-00043 08/23/20179

59.1 Bearing Devices 7 Double tee stems bear on 4" thick elastomeric bearing pads at abutments and bents. Bearings are covered in spray foam and not visible.

59.2A Diaphragms

59.2B Bracing

Overall Rating (59) Good condition (some minor problems).7

59.2 Girders Prestressed concrete double tees - Minor vertical cracks and light efflorescence at bents at exterior in diaphragm/closure pour. Efflorescence in underside of top flange where drains were punched through at exterior girders.

59.3 Floor Beams

Concrete diaphragms between alternating stems of tees at midspans, cast-in-place concrete between all stems at abutments and bents. Efflorescence between diaphragm and stem at a few random locations at ends and midspan, especially at midspan of second stem from east in north span.

59.4 Stringers

59.5 Trusses

59.6 Paint

59.7 Splices & Conn's

59.8 Rivets or Bolts

59.9 Welds

59.10 Corrosion (rust)

59.11 Timber Decay

59.12 Deflection Under Load

59.13 Vibration Under Load

ITEM REMARKS

59.5A Portals

59.5B Bracing

Noticeable camber due to prestress.

59.14 Collision Damage

Good

Good

Good

Good

Good

Superstructure (59)

32578-00043 08/23/201710

ABUTMENTS

Overall Rating (60) Good condition (some minor problems).7

60.1 Wings Cast-in-place concrete, extensions of abutments.

60.2 Backwalls/Bulkheads

Minor spalls in top of backwalls where exposed in roadway.

60.3 Bearing Seats

60.4 Breastwalls/Columns Cast-in-place concrete.

60.5 Weep Holes

60.6 Footings/Sills

60.7 Piles/Bracing

60.8 Erosion/Scour

60.9 Settlement

ITEM REMARKS

BENTS/PIERS

60.10 Bearing Seats

Cast-in-place concrete.

Steel pipe piles, exterior piles battered - Light surface rust, minor pitting at normal waterline.

60.11 Caps

60.12 Columns/Walls

60.13 Piles/Bracing

60.14 Footings/Sills

60.15 Erosion/Scour

60.16 Settlement

Good

Good

Good

Good

Good

Substructure (60)

32578-00043 08/23/201711

61.1 Scour/Erosion 7 Low, grassy banks, many trees. Small erosion cone around each pile 6" to 8" deep (not visible in 2017).

Overall Rating (61) Bank protection needs minor repairs.7

61.2 Channel Protection

Boulder and cobble sized riprap in front of abutments and upstream and downstream 20'.

61.3 Spur Dikes, Jetties

61.4 Waterway Obstructions

Moderate potential for debris; trees fallen in channel upstream and downstream (none at bridge). 200' downstream channel is blocked causing flood conditions in 2017.

61.5 Adequacy of Opening Evidence of flow to mid-height of girder stems caused by backwater of nearby Mississippi River.

61.6 Normal Velocity

61.7 Average Opening

Sand.61.8 Stream Bed Material

ITEM REMARKS

Medium

Sufficient

Good

Good

Good

Good

Good

Good

Channel (61)

32578-00043 08/23/201712

COVER

Overall Rating (62) Not applicable.N

62.1 Embankment

62.2 Surfacing

62.3 Shoulders

62.4 Headwalls

62.5 Wings

62.6 Barrel

62.7 Footings

62.8 Design Opening

ITEM REMARKS

STRUCTURES

62.9 Opening Remaining

62.10 Debris/Silt

62.11 Erosion/Scour

62.12 Grade %

HYDRAULICS

Culverts (62)

32578-00043 08/23/201713

36.A Bridge Railing

Concrete Jersey barrier.

36.B Guard/Bridge Rail Transitions Not gradually stiffened.

36.C Approach Railing

Galvanized "W" beam treated timber post blocked out.

36.D Approach Rail Ends Wrap around end sections, not fully closed, not breakaway or anchored.

8113. Scour No signs of scour. Scour calculation/evaluation has not been made.

ITEM REMARKS

41. Load Posting Status A Not posted. Load posting is not required.

No record available.Accident History

Stable

Open not required.

N Not applicable or a safety feature is

1 Meets current FWS guidelines.

guidelines

0 Does not meet current FWS new rail

Railing Legend

Railing (36), Scour (113), Load Posting System (41), Accident History

32578-00043 08/23/201714

Typical Signs

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32578-00043 08/23/201725