I 90 over MONTANA RAIL LINK

Map 

Facts 

Name:	I 90 over MONTANA RAIL LINK
Structure number:	I00090110+00331
Location:	1 KM W BONNER
Purpose:	Carries highway over railroad
Route classification:	Principal Arterial - Interstate (Rural) [01]
Length of largest span:	68.9 ft. [21.0 m]
Total length:	329.1 ft. [100.3 m]
Roadway width between curbs:	37.4 ft. [11.4 m]
Deck width edge-to-edge:	41.0 ft. [12.5 m]
Vertical clearance below bridge:	25.6 ft. [7.8 m]
Owner:	State Highway Agency [01]
Year built:	1963
Year reconstructed:	1994
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:	Steel continuous [4]
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:	10,050 [as of 2008]
Truck traffic:	3% of total traffic
Deck condition:	Satisfactory [6 out of 9]
Superstructure condition:	Satisfactory [6 out of 9]
Substructure condition:	Good [7 out of 9]
Pier/abutment protection:	Navigation protection not required [1]
Scour condition:	Bridge not over waterway. [N]
Operating rating:	50.8 tons [46.2 metric tons]
Inventory rating:	35.9 tons [32.6 metric tons]
Sufficiency rating:	96.5

2000 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	8,960 [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:	Very Good [8 out of 9]
Scour condition:	Bridge not over waterway. [N]
Operating rating:	50.8 tons [46.2 metric tons]
Inventory rating:	35.9 tons [32.6 metric tons]
Sufficiency rating:	96.6

1992 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	6,950 [as of 1991]
Truck traffic:	20% of total traffic
Deck condition:	Satisfactory [6 out of 9]
Superstructure condition:	Fair [5 out of 9]
Substructure condition:	Very Good [8 out of 9]
Scour condition:	Bridge not over waterway. [N]
Operating rating:	56.4 tons [51.3 metric tons]
Inventory rating:	35.6 tons [32.4 metric tons]
Evaluation:	Functionally obsolete [2]
Sufficiency rating:	67.2

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