WB SR520 OFF RAMP over ARBORETUM & N-MONT

Map 

Facts 

Name:	WB SR520 OFF RAMP over ARBORETUM & N-MONT
Structure number:	0006872D0000000
Location:	0.4 E JCT SR 513
Purpose:	Carries highway over highway
Route classification:	Principal Arterial - Other Freeways or Expressways (Urban) [12]
Length of largest span:	100.1 ft. [30.5 m]
Total length:	366.2 ft. [111.6 m]
Roadway width between curbs:	58.1 ft. [17.7 m]
Deck width edge-to-edge:	63.0 ft. [19.2 m]
Vertical clearance below bridge:	15.4 ft. [4.7 m]
Skew angle:	47°
Owner:	State Highway Agency [01]
Year built:	1963
Historic significance:	Bridge is not eligible for the National Register of Historic Places [5]
Design load:	MS 18+Mod / HS 20+Mod [6]
Number of main spans:	4
Main spans material:	Prestressed concrete [5]
Main spans design:	Stringer/Multi-beam or girder [02]
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:	4,805 [as of 2007]
Truck traffic:	5% of total traffic
Deck condition:	Good [7 out of 9]
Superstructure condition:	Satisfactory [6 out of 9]
Substructure condition:	Good [7 out of 9]
Scour condition:	Bridge not over waterway. [N]
Operating rating:	59.4 tons [54.0 metric tons]
Inventory rating:	35.6 tons [32.4 metric tons]
Sufficiency rating:	95.5
Estimated cost of work:	$119,000

2000 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	4,963 [as of 1994]
Truck traffic:	5% of total traffic
Deck condition:	Satisfactory [6 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:	47.5 tons [43.2 metric tons]
Inventory rating:	27.7 tons [25.2 metric tons]
Sufficiency rating:	89.2
Estimated cost of work:	$152,000

1992 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	2,190 [as of 1976]
Truck traffic:	5% of total traffic
Deck condition:	Satisfactory [6 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:	54.5 tons [49.5 metric tons]
Inventory rating:	35.6 tons [32.4 metric tons]
Sufficiency rating:	81.8
Estimated cost of work:	$924,000

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