INTERSTATE 580 over ST RTE 24-I 980

Map 

Facts 

Name:	INTERSTATE 580 over ST RTE 24-I 980
Structure number:	33 0298
Location:	04-ALA-580-45.15-OAK
Purpose:	Carries highway overpass over highway and railroad
Route classification:	Principal Arterial - Interstate (Urban) [11]
Length of largest span:	99.1 ft. [30.2 m]
Total length:	288.1 ft. [87.8 m]
Roadway width between curbs:	122.1 ft. [37.2 m]
Deck width edge-to-edge:	127.0 ft. [38.7 m]
Vertical clearance above deck:	16.4 ft. [5.0 m]
Vertical clearance below bridge:	15.1 ft. [4.6 m]
Skew angle:	4°
Owner:	State Highway Agency [01]
Year built:	1961
Year reconstructed:	1969
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:	3
Main spans material:	Concrete continuous [2]
Main spans design:	Box beam or girders - Multiple [05]
Deck type:	Concrete Cast-in-Place [1]
Wearing surface:	Monolithic Concrete (concurrently placed with structural deck) [1]

2010 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	205,000 [as of 1998]
Truck traffic:	2% of total traffic
Deck condition:	Good [7 out of 9]
Superstructure condition:	Good [7 out of 9]
Substructure condition:	Good [7 out of 9]
Scour condition:	Bridge not over waterway. [N]
Operating rating:	78.8 tons [71.6 metric tons]
Inventory rating:	45.9 tons [41.7 metric tons]
Evaluation:	Functionally obsolete [2]
Sufficiency rating:	75.0
Recommended work:	Bridge deck replacement with only incidental widening. [37]
Estimated cost of work:	$6,961,000

2000 Inspection 

Average daily traffic:	125,300 [as of 1997]
Truck traffic:	2% of total traffic
Evaluation:	Not applicable [N]

1992 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	250,000 [as of 1990]
Deck condition:	Good [7 out of 9]
Superstructure condition:	Good [7 out of 9]
Substructure condition:	Good [7 out of 9]
Scour condition:	Bridge not over waterway. [N]
Operating rating:	78.2 tons [71.1 metric tons]
Inventory rating:	45.5 tons [41.4 metric tons]
Evaluation:	Functionally obsolete [2]
Sufficiency rating:	76.0
Recommended work:	Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:	$2,470,000

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