I-5 over STILLAGUAMISH R

Map 

Facts 

Name:	I-5 over STILLAGUAMISH R
Structure number:	0001652A0000000
Location:	0.7 N JCT SR 530
Purpose:	Carries highway over highway and waterway
Route classification:	Principal Arterial - Interstate (Rural) [01]
Length of largest span:	200.1 ft. [61.0 m]
Total length:	859.0 ft. [261.8 m]
Roadway width between curbs:	47.9 ft. [14.6 m]
Deck width edge-to-edge:	49.2 ft. [15.0 m]
Vertical clearance above deck:	16.4 ft. [5.0 m]
Vertical clearance below bridge:	11.5 ft. [3.5 m]
Owner:	State Highway Agency [01]
Year built:	1933
Historic significance:	Bridge is not eligible for the National Register of Historic Places [5]
Design load:	M 13.5 / H 15 [2]
Number of main spans:	3
Main spans material:	Steel [3]
Main spans design:	Truss - Thru [10]
Deck type:	Concrete Cast-in-Place [1]
Wearing surface:	Latex Concrete or similar additive [3]

2010 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	39,247 [as of 2007]
Truck traffic:	11% of total traffic
Deck condition:	Poor [4 out of 9]
Superstructure condition:	Fair [5 out of 9]
Substructure condition:	Satisfactory [6 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 is scour critical; bridge foundations determined to be unstable. [3]
Operating rating:	34.7 tons [31.5 metric tons]
Inventory rating:	20.8 tons [18.9 metric tons]
Evaluation:	Structurally deficient [1]
Sufficiency rating:	48.6
Recommended work:	Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:	$663,000

2000 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	27,261 [as of 1994]
Truck traffic:	13% of total traffic
Deck condition:	Fair [5 out of 9]
Superstructure condition:	Fair [5 out of 9]
Substructure condition:	Fair [5 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 is scour critical; bridge foundations determined to be unstable. [3]
Operating rating:	34.7 tons [31.5 metric tons]
Inventory rating:	20.8 tons [18.9 metric tons]
Evaluation:	Functionally obsolete [2]
Sufficiency rating:	47.0
Recommended work:	Replacement of bridge or other structure because of relocation of road. [32]
Estimated cost of work:	$770,000

1992 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	16,675 [as of 1984]
Truck traffic:	15% of total traffic
Deck condition:	Poor [4 out of 9]
Superstructure condition:	Fair [5 out of 9]
Substructure condition:	Satisfactory [6 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:	Scour calculation/evaluation has not been made. [6]
Operating rating:	35.6 tons [32.4 metric tons]
Inventory rating:	18.8 tons [17.1 metric tons]
Evaluation:	Structurally deficient [1]
Sufficiency rating:	49.8
Recommended work:	Replacement of bridge or other structure because of relocation of road. [32]
Estimated cost of work:	$5,223,000

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