NW COUCH ST CO over HWY 61

Map 

Facts 

Name:	NW COUCH ST CO over HWY 61
Structure number:	09278 061 00225
Location:	0.5 MI W PORTLAND CC
Purpose:	Carries highway and pedestrian walkway over highway
Route classification:	Local (Urban) [19]
Length of largest span:	64.0 ft. [19.5 m]
Total length:	126.0 ft. [38.4 m]
Roadway width between curbs:	44.0 ft. [13.4 m]
Deck width edge-to-edge:	55.1 ft. [16.8 m]
Vertical clearance below bridge:	19.4 ft. [5.9 m]
Skew angle:	18°
Owner:	State Highway Agency [01]
Year built:	1968
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:	2
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:	15,602 [as of 2008]
Truck traffic:	10% 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:	59.8 tons [54.4 metric tons]
Inventory rating:	36.0 tons [32.7 metric tons]
Sufficiency rating:	96.5

2000 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	11,201 [as of 1998]
Truck traffic:	10% 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:	60.4 tons [54.9 metric tons]
Inventory rating:	35.6 tons [32.4 metric tons]
Sufficiency rating:	94.9

1992 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	11,200 [as of 1990]
Truck traffic:	10% 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:	60.4 tons [54.9 metric tons]
Inventory rating:	35.6 tons [32.4 metric tons]
Sufficiency rating:	97.1

Comments