LA0073 over BAYOU MANCHAC

Map 

Facts 

Name:	LA0073 over BAYOU MANCHAC
Structure number:	611700770400001
Location:	LA0073
Purpose:	Carries highway over waterway
Route classification:	Minor Arterial (Urban) [16]
Length of largest span:	82.0 ft. [25.0 m]
Total length:	325.1 ft. [99.1 m]
Roadway width between curbs:	24.0 ft. [7.3 m]
Deck width edge-to-edge:	26.9 ft. [8.2 m]
Owner:	State Highway Agency [01]
Year built:	1931
Historic significance:	Bridge is not eligible for the National Register of Historic Places [5]
Design load:	M 13.5 / H 15 [2]
Number of main spans:	5
Main spans material:	Steel [3]
Main spans design:	Truss - Thru [10]
Deck type:	Concrete Cast-in-Place [1]
Wearing surface:	Bituminous [6]

2010 Inspection 

Status:	Posted for load [P]
Average daily traffic:	11,300 [as of 2009]
Truck traffic:	18% of total traffic
Deck condition:	Fair [5 out of 9]
Superstructure condition:	Poor [4 out of 9]
Substructure condition:	Satisfactory [6 out of 9]
Channel protection:	Banks are protected or well vegetated. River control devices such as spur dikes and embankment protection are not required or are in a stable condition. [8]
Scour condition:	Bridge is scour critical; bridge foundations determined to be unstable. [3]
Operating rating:	36.6 tons [33.3 metric tons]
Inventory rating:	21.8 tons [19.8 metric tons]
Evaluation:	Structurally deficient [1]
Sufficiency rating:	34.6
Recommended work:	Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:	$1,384,000

2000 Inspection 

Status:	Posted for load [P]
Average daily traffic:	6,560 [as of 1998]
Truck traffic:	18% of total traffic
Deck condition:	Satisfactory [6 out of 9]
Superstructure condition:	Good [7 out of 9]
Substructure condition:	Good [7 out of 9]
Channel protection:	Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. [7]
Scour condition:	Bridge is scour critical; bridge foundations determined to be unstable. [3]
Operating rating:	36.6 tons [33.3 metric tons]
Inventory rating:	21.8 tons [19.8 metric tons]
Evaluation:	Functionally obsolete [2]
Sufficiency rating:	58.4
Recommended work:	Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:	$1,384,000

1992 Inspection 

Status:	Posted for load [P]
Average daily traffic:	4,331 [as of 1991]
Truck traffic:	18% of total traffic
Deck condition:	Satisfactory [6 out of 9]
Superstructure condition:	Good [7 out of 9]
Substructure condition:	Good [7 out of 9]
Channel protection:	Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. [7]
Scour condition:	Scour calculation/evaluation has not been made. [6]
Operating rating:	31.7 tons [28.8 metric tons]
Inventory rating:	16.8 tons [15.3 metric tons]
Evaluation:	Functionally obsolete [2]
Sufficiency rating:	50.3
Recommended work:	Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:	$1,384,000

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