HistoricBridges.org Menu: HistoricBridges.org Menu:



BridgeSeek

Nearby Bridges in NBI 2021: 2


LA0315 over BAYOU DULARGE (Route: 315)
Num:25502459009801x
Open: no restriction [A]
Built: 1977, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.2 Miles (0.4 Kilometers)

Bridge Type
Main Span(s): Steel [3] Movable - Bascule [16]
Approach Span(s): Prestressed concrete [5] Mixed types [20]
Deck: Open Grating [3] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 704.4 m = 2311.1 ft
Main Spans: 1 at 45.7 m = 149.9 ft
Approach Spans: 34
Skew: 0
Width, Roadway: 11 m = 36.1 ft (2 Lanes) and Out-To-Out: 12 m = 39.4 ft for a 15.5 m = 50.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 15.2 m = 49.9 ft
Location
Houma [36255]: Terrebonne Parish [109], Louisiana [22]
Owned by State Highway Agency [01], DOT District: 2
.01 MI NORTH OF LA 661
Condition
Deck: Satisfactory [6]
Superstructure: Satisfactory [6]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 42.6 metric ton = 46.9 tons (Allowable Stress(AS) [2])
Inventory: 29 metric ton = 31.9 tons (Allowable Stress(AS) [2])
Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Better than present minimum criteria [7]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: April 1999 [499] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 5700 (2016) and Trucks: 11%
Future ADT: 7068 (In 2036 )
LA0661 over NAVIGATION CANAL (Route: 661)
Num:25508550800001x
Open: no restriction [A]
Built: 1962, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.3 Miles (0.5 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: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 110.9 m = 363.9 ft
Main Spans: 1 at 73.2 m = 240.2 ft
Approach Spans: 6
Skew: 0
Width, Roadway: 7.3 m = 24.0 ft (2 Lanes) and Out-To-Out: 10.2 m = 33.5 ft for a 10.7 m = 35.1 ft approaching roadway.
Vertical Clearance: 6.1 m = 20.0 ft and Navigational Clearance: 0.6 m = 2.0 ft
Location
Houma [36255]: Terrebonne Parish [109], Louisiana [22]
Owned by State Highway Agency [01], DOT District: 2
.01 MI NORTH OF LA 315
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: M 13.5 / H 15 [2]
Operating: 23 metric ton = 25.3 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 17.8 metric ton = 19.6 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: Better than present minimum criteria [7]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: July 1999 [799] 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: 0.3 km = 0.2 mi
Traffic
ADT: 15600 (2016) and Trucks: 11%
Future ADT: 18972 (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.

Divider

Back

Top

Divider

About - Contact

Divider