I0310 over I-310 OVER LA 3127

Map 

Facts 

Name:	I0310 over I-310 OVER LA 3127
Structure number:	024504503802411
Location:	1.57 MI. N. OF US 90
Purpose:	Carries highway over highway and waterway
Route classification:	Principal Arterial - Interstate (Urban) [11]
Length of largest span:	124.0 ft. [37.8 m]
Total length:	2523.1 ft. [769.0 m]
Roadway width between curbs:	40.0 ft. [12.2 m]
Deck width edge-to-edge:	42.7 ft. [13.0 m]
Vertical clearance below bridge:	17.7 ft. [5.4 m]
Skew angle:	59°
Owner:	State Highway Agency [01]
Year built:	1986
Historic significance:	Bridge is not eligible for the National Register of Historic Places [5]
Design load:	MS 18 / HS 20 [5]
Number of main spans:	28
Main spans material:	Prestressed concrete [5]
Main spans design:	Stringer/Multi-beam or girder [02]
Deck type:	Concrete Cast-in-Place [1]

2010 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	31,200 [as of 2009]
Truck traffic:	7% of total traffic
Deck condition:	Very Good [8 out of 9]
Superstructure condition:	Satisfactory [6 out of 9]
Substructure condition:	Very Good [8 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 foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:	55.4 tons [50.4 metric tons]
Inventory rating:	33.7 tons [30.6 metric tons]
Sufficiency rating:	91.2

2000 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	29,928 [as of 1998]
Truck traffic:	7% of total traffic
Deck condition:	Very Good [8 out of 9]
Superstructure condition:	Very Good [8 out of 9]
Substructure condition:	Very Good [8 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]
Operating rating:	64.4 tons [58.5 metric tons]
Inventory rating:	38.6 tons [35.1 metric tons]
Sufficiency rating:	92.0

1992 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	9,712 [as of 1991]
Truck traffic:	7% of total traffic
Deck condition:	Very Good [8 out of 9]
Superstructure condition:	Very Good [8 out of 9]
Substructure condition:	Very Good [8 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]
Operating rating:	43.6 tons [39.6 metric tons]
Inventory rating:	35.6 tons [32.4 metric tons]
Sufficiency rating:	92.0

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