Bridge Type
Main Span(s): Steel [3] Movable - Lift [15]
Approach Span(s): Concrete [1] Slab [01]
Deck: Open Grating [3] with Wearing Surface:
Bridge Dimensions
Length: 78 m = 255.9 ft
Main Spans: 1 at 23.2 m = 76.1 ft
Approach Spans: 9
Skew: 0
Width, Roadway: 8.6 m = 28.2 ft (2 Lanes) and Out-To-Out: 10.4 m = 34.1 ft for a 14.6 m = 47.9 ft approaching roadway.
Vertical Clearance: 5.11 m = 16.8 ft and Navigational Clearance: 25.3 m = 83.0 ft
Location
Unknown [00000]: Terrebonne Parish [109], Louisiana [22]
Owned by County Highway Agency [02], DOT District: 2
0.08 MI WEST OF LA 57
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 43.1 metric ton = 47.4 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 33.4 metric ton = 36.7 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Appraisal
Structural: Better than present minimum criteria [7]
Deck Geometry: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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: June 1999 [699] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 15.9 km = 9.9 mi
Traffic
ADT: 1500 (2016) and Trucks: 0%
Future ADT: 1860 (In 2036
)
