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Nearby Bridges in NBI 2021: 1


LA0316 over ICWW / BAYOU BLUE (Route: 316)
Num:22904120200381x
Posted for load [P]
Built: 1972, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

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Rough Distance: 0.1 Miles (0.2 Kilometers)

Bridge Type
Main Span(s): Steel [3] Movable - Swing [17]
Approach Span(s): Concrete [1] Mixed types [20]
Deck: Steel plate (includes orthotropic) [5] with Wearing Surface:
Bridge Dimensions
Length: 97.5 m = 319.9 ft
Main Spans: 1 at 49.1 m = 161.1 ft
Approach Spans: 10
Skew: 0
Width, Roadway: 7.3 m = 24.0 ft (2 Lanes) and Out-To-Out: 7.3 m = 24.0 ft for a 9.1 m = 29.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 304.5 m = 999.1 ft
Location
Unknown [00000]: Lafourche Parish [057], Louisiana [22]
Owned by State Highway Agency [01], DOT District: 2
2.3 MI NORTH OF LA 24
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Satisfactory [6]
Loading
Design: M 13.5 / H 15 [2]
Operating: 22.7 metric ton = 25.0 tons (Load Factor(LF) [1])
Inventory: 17 metric ton = 18.7 tons (Load Factor(LF) [1])
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 minimum criteria [6]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: June 2020 [0620] 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: 2600 (2016) and Trucks: 13%
Future ADT: 3900 (In 2036 )

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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