2023-HRWAT 4 Inspection Report.pdf

Trail #-MP:

1 1

Material:

4 x 14'' x 8'' x 39.5'

Material:

x x x

Material:

Material:

3'' x 8'' x x

Plan Number:

39.5' 144'' Service Under Bridge:

29.25' 144'' Vertical Under Bridge Opening (ft):

28.5' 66'' Top of Deck Height (ft):

0 N Vertical Clear Height (ft):

Rail Ht:

(in)

TIMBER, SAWN UNTREATED

TIMBER RUNNING PLANKS - UNTREATED

None

Wearing Surface:

DECK GIRDER

Overall Length (ft):

STEEL

TIMBER, SAWN UNTREATED

TIMBER, TREATED

INSPECTION

Forest/Special Use Unit:

Main Span Type:

CategoryBRIDGE IDENTIFICATION AND LOCATION

Trail Bridge Name: HRWAT #4 Trail Number-Bridge MP:

COMPLEX

31393-0.80

SNOW CAT

Androscoggin RD

STRUCTURE TYPE AND MATERIAL

Number of Main Spans:

SPREAD FOOTING

Location: 31393 Huntington Ravine Feature Crossed:

Quantity and Dimensions (Q x D” x W” x L'):

Deck Type: PLANK

Trail Class: 3 Designed Use:

White Mountain NF District:

Superstructure Number of Approach Spans:

Quantity and Dimensions (Q x D” x W” x L'):

Latitude: 44.270369 Longitude: -71.280097

TRACS

TRAIL BRIDGE

Curb Material:

Geometry / Design / Rating

Curb (Ht" x W"):

Rail Material:

Bridge Skew (°):

Dimensions (D”xW”xL”):

Approach Span Type: DECK GIRDER

Substructure Type:

User Barrier Rail Type:

Max Rail Opening:

(in)

WATERWAY

Maximum Span (ft):

Clear Span (ft):

Overall Deck Width (in):

Horizontal Clear Width (in):

Tread Width (in):

Structure Remarks

Superstructure: Beams H=14", Wf=8", Tf=1/2", Tw=1/4" (Likely W14x43). Girder spacing 36". Diaphragm spacing 7.5'. Steel stringers and diaphragms are in good condition with minor rust.

Deck: A number of heavily rotted and broken boards. Deck boards not safe to walk on. Approach span is partially overgrown also with broken and rotted boards. The issues with the deck resulted in a NBI Condition Rating of 2-Serious, and is a critical finding. It is recommended that this bridge be closed until the deck can be replaced.

Bridge Flare (Y/N):

Tr. Bridge Name: Feature Crossed: 0 31393-0.80HRWAT #4

TRACS

Tr. Bridge Name: Feature Crossed: 0 31393-0.80HRWAT #4

Inspection Date: 12

Inspected by:

N

Railing -

Steel bears directly on wood sill with lags and clips.

All

9/28/2023

Steve Wright, P.E.

Description:

36. User Barriers:

Post -

Curb -

Fair

Good

Good

2x diaphragms

Downstream girder is bowed slightly, perhaps from impact. Rest are straight. Only "attached" to sill with lag screws as "clips".

Overgrown with rot and broken boards.

CONDITION CODES and REMARKS

Stringers/Girders

Diaphrams/Bracing

Stringers/Girders

REMARKS

Heavily worn and weathered.

Numerous rotted and broken planks. Needs to be replaced.

Lichen growth.

Fair

Failed

Good

CODE

Bearings

Paint

Bracing

Floor Beams

Stringers/Girders

Inspection Frequency (Months):

(4) Steel beams with light surface rust.

ITEM

Wearing Surface:

58. DECK:

Cleanliness

Deck Slab/Panels

Drains and Drainage

Utilities

Deck Joints

Flooring

Girder

59. SUPERSTRUCTURE (Main Span):

Bearings

Paint

Bracing

Floor Beams

All

Flooring

Girder

Diaphrams/Bracing

Stringers/Girders

59. SUPERSTRUCT (Approach Span):

Tr. Bridge Name: Feature Crossed: 0 31393-0.80HRWAT #4

MEET

User Barrier

Bridge Grade

Trail Alignment

Trail Grade

Tread Width

Other

TRAIL APPROACHES:

Approach Settlement

Shoulder Embankment

Surfacing

71.WATERWAY ADEQUACY:

Sill/Grade Beam

P ie rs

61. Channel

None present

Good

Good

Fair

Wood sills directly on grade.

Sill/Grade Beam

Good

Good

NOB

Good

All

60. SUBSTRUCTURE:

Alignment/Settlment/Skew

Scour/Erosion

Backing Plank/Backwall

Gabion/Reinforced Earth

Opening/Stream Constraint

Vertical Underbridge Opening

COMPONENT

Deck Width

VALUE

Poor

Good

Poor

Channel Protection

Channel Scour/Erosion

Vegetation

Waterway Obstruction/Drift

Bridge is too low.

Appraisal – Bridge Elements Meet TMO? (Print TMO direct from INFRA Tr. Bridge Module)

No backwall and no approach span or fill at abutment 1.

REMARKS

Rock & large boulder rapids with full armoring.

Hiking path/winter access trail. Overgrown and rocky.

A bu tm en ts

Tr. Bridge Name: Feature Crossed: 0 31393-0.80HRWAT #4

TB-CPX-APR-SGN-02A

HIGH PRIORITY-Install object markers

Steel $1725 / EACH - Difficult 1

Inspection-deck girder, side girder, single unit slab/beam

Task ID

Comments

Task ID

Comments

Task ID

Comments

Task ID

Comments

Superstructure Steel $8.26 / LB 100

Task ID

Comments

Repair/replace superstructure members

Attach girders to sills

User_Barrier Timber $59.34 / LN FT 39.5

Task ID

Comments

Repair/replace/install Curb

TB-CPX-CRB-TBR-02A

Install timber curb, both sides.

Task ID

Comments

Wearing Surface-Repair/replace/install

Approaches Any material $678.88 / LS 1

Task ID

Comments

Repair/replace approach fills per bridge

Deck Timber $6.42 / SQ FT 360

Task ID

Comments

Replace plank deck

Task ID

Comments

Whole_Bridge Any material $1.99 / SQ FT 250

Task ID

Comments

Basic Maintenance

Comments

Approaches Task ID Any material $228.33 / EACH

TB-CPX-INS-LDR-02B

Basic Maintenance

Item Category Task Material Cost/Unit Severity

Quantity

Whole_Bridge Any material $1.99 / SQ FT 1500

Task ID

Comments

TB-CPX-WHL-01A

Load rate

Tasks

Repair/replace/install safety signage

Inspection

Wearing_Surface Timber $13.80 / SQ FT - Replace in-kind

TB-CPX-WHL-01A

Brush approaches

TB-CPX-DCK-TBR-02A

HIGH PRIORITY-Replace deck

TB-CPX-WSF-TBR-02A

TB-CPX-APR-EMB-02B

Rebuild approach to Abutment 1

TB-CPX-SUP-STL-02A

Tr. Bridge Name: Feature Crossed: 0 31393-0.80HRWAT #4

Task ID

Comments

Task ID

Comments

Task ID

Comments

Task ID

Comments

Task ID

Comments

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Comments

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Tasks

Item Category Task

Task ID

Comments

Task ID

Comments

Material Cost/Unit Severity

Quantity

X

** As needed, insert additional pages for photos of structure and/or site.

28.5'

29.25'

0'' 0''

14'' 8''

66''

144''

HRWAT #4Structure Name: Feature Crossed: 0 Trail #-MP: 31393-0.80

0''

0''

39.5'

36" 9'

9/28/2023

Abutment 1

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Overgrown approach span

Trail #-MP: 31393-0.80 Feature Crossed: 0.0000

BRIDGE PHOTOS

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Date:Structure Name: HRWAT #4

BRIDGE PHOTOS - cont.

Looking Upstream from the Bridge Deck

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Looking Downstream from the Bridge Deck

Structure Name:

Feature Crossed: 0.0000

HRWAT #4 Date: 9/28/2023

Trail #-MP: 31393-0.80

Looking Upstream - Partial Elevation Profile

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Looking Upstream - Partial Elevation Profile

Structure Name:

Feature Crossed: 0.0000

HRWAT #4 Date: 9/28/2023

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River Right Abutment

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River Left Abutment

Structure Name:

Feature Crossed: 0.0000

HRWAT #4 Date: 9/28/2023

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View of bridge deck

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View of broken deck boards

Structure Name:

Feature Crossed: 0.0000

HRWAT #4 Date: 9/28/2023