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Nearby Bridges in NBI 2021: 3


LOCAL ROAD over DU LARGE BAYOU (Route: 0)
Num:25529246904711x
Posted for load [P]
Built: 1960, Reconstructed: N/A [0000]
Historic: Bridge is eligible for the NRHP. [2]

Google Streetview (If Available)

Rough Distance: 0.1 Miles (0.1 Kilometers)

Bridge Type
Main Span(s): Steel [3] Movable - Swing [17]
Approach Span(s): Wood or timber [7] Stringer/Multi-beam or girder [02]
Deck: Wood or Timber [8] with Wearing Surface: Wood or Timber [7]
Bridge Dimensions
Length: 38.4 m = 126.0 ft
Main Spans: 1 at 19.5 m = 64.0 ft
Approach Spans: 1
Skew: 0
Width, Roadway: 4.1 m = 13.5 ft (1 Lanes) and Out-To-Out: 4.3 m = 14.1 ft for a 6.7 m = 22.0 ft approaching roadway.
Vertical Clearance: 4.39 m = 14.4 ft and Navigational Clearance: 0.9 m = 3.0 ft
Location
Unknown [00000]: Terrebonne Parish [109], Louisiana [22]
Owned by County Highway Agency [02], DOT District: 2
0001 LOG MI FROM IN
Condition
Deck: Satisfactory [6]
Superstructure: Fair [5]
Substructure: Satisfactory [6]
Loading
Design: MS 18 / HS 20 [5]
Operating: 16.2 metric ton = 17.8 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 12.6 metric ton = 13.9 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Appraisal
Structural: Meets minimum tolerable limits to be left in place as is [4]
Deck Geometry: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Better than present minimum criteria [7] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: May 1999 [599] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 15.9 km = 9.9 mi
Traffic
ADT: 50 (1978) and Trucks: 0%
Future ADT: 62 (In 2036 )
LA0315 over FALGOUT CANAL (Route: 315)
Num:25502450207341x
Open: no restriction [A]
Built: 1964, Reconstructed: N/A [0000]
Historic: Bridge is eligible for the NRHP. [2]

Google Streetview (If Available)

Rough Distance: 0.2 Miles (0.4 Kilometers)

Bridge Type
Main Span(s): Steel [3] Movable - Swing [17]
Approach Span(s): Concrete [1] Slab [01]
Deck: Open Grating [3] with Wearing Surface:
Bridge Dimensions
Length: 61.6 m = 202.1 ft
Main Spans: 1 at 41.1 m = 134.8 ft
Approach Spans: 3
Skew: 0
Width, Roadway: 7.3 m = 24.0 ft (2 Lanes) and Out-To-Out: 10.4 m = 34.1 ft for a 12.2 m = 40.0 ft approaching roadway.
Vertical Clearance: 4.83 m = 15.8 ft and Navigational Clearance: 1.2 m = 3.9 ft
Location
Unknown [00000]: Terrebonne Parish [109], Louisiana [22]
Owned by State Highway Agency [01], DOT District: 2
11.0 MI SOUTH OF LA 661
Condition
Deck: Good [7]
Superstructure: Poor [4]
Substructure: Poor [4]
Loading
Design: M 13.5 / H 15 [2]
Operating: 26.6 metric ton = 29.3 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 20.4 metric ton = 22.4 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Appraisal
Structural: Meets minimum tolerable limits to be left in place as is [4]
Deck Geometry: Basically intolerable requiring high priority of replacement [2]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: November 1999 [1199] and Frequency: 24
Future Work
Work Needed: Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Bridge Detour: 15.9 km = 9.9 mi
Traffic
ADT: 2200 (2016) and Trucks: 12%
Future ADT: 2604 (In 2036 )
LOCAL ROAD over DU LARGE BAYOU (Route: 0)
Num:25529248904681x
Posted for load [P]
Built: 2011, Reconstructed: N/A [0000]
Historic: Historical significance is not determinable at this time. [4]

Google Streetview (If Available)

Rough Distance: 0.5 Miles (0.7 Kilometers)

Bridge Type
Main Span(s): Steel [3] Movable - Bascule [16]
Approach Span(s): Other [00]
Deck: Wood or Timber [8] with Wearing Surface: Wood or Timber [7]
Bridge Dimensions
Length: 21 m = 68.9 ft
Main Spans: 4 at 5.8 m = 19.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 6.5 m = 21.3 ft (2 Lanes) and Out-To-Out: 6.8 m = 22.3 ft for a 6.1 m = 20.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Terrebonne Parish [109], Louisiana [22]
Owned by County Highway Agency [02], DOT District: 2
0001 LOG MI FROM IN
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Satisfactory [6]
Loading
Design: M 9 / H 10 [1]
Operating: 36.6 metric ton = 40.3 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 28.2 metric ton = 31.0 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Equal to present minimum criteria [6] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: May 1999 [599] and Frequency: 24
Future Work
Work Needed: Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Bridge Detour: 1.6 km = 1.0 mi
Traffic
ADT: 0 (2015) and Trucks: 0%
Future ADT: 0 (In 2035 )

Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S  - Dismantled and/or in storage. L -  Severe loss of historic integrity due to alteration.

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