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Details NBI 2012

Place Name:Mount Vernon
NBI Structure Number:0004794A0000000
Route Sign Prefix:Interstate
Route Number:5
Facility Carried:I-5
Feature Intersected:SKAGIT RIVER
Location:0.7 N JCT SR 538
Year Built:1955
Status:Functionally Obsolete
RecordType:Roadway is carried ON the structure
Level of Service:Mainline roadway
Owner:State Highway Agency
Highway Agency District:01
Maintenance Responsibility:State Highway Agency
Functional Class:Principal Arterial - Interstate, Urban
Service On Bridge:Highway
Service Under Bridge:Highway-waterway
Latitude:48 26 35.80 N
Longitude:122 20 27.90 W
Material Design:Steel
Design Construction:Truss - Thru
Approach Material Design:Concrete continuous
Approach Design Construction:Tee Beam
Structure Length (m):338.9
Navigation Vertical Clearance (m):2.4
Approach Roadway Width (m):21.9
Lanes on Structure:4
Lanes under Structure:4
Average Daily Traffic:70925
Year of Average Daily Traffic:2010
Design Load:MS 18
Scour:Bridge foundations determined to be stable for assessed or calculated scour condition.
Bridge Railings:Meet currently acceptable standards.
Historical Significance:Bridge is not eligible for the National Register of Historic Places.
# of Spans in Main Structure:4
# of Spans in Approach Structures:8
StructureFlared:No flare
Transitions:Does not meet currently acceptable standards.
Approach Guardrail:Meets currently acceptable standards.
Approach Guardrail Ends:Not Applicable
Navigation Control:Navigation control on waterawy (bridge permit required).
Navigation Horizontal Clearance (m):33.5
Structure Open?:Open, no restrictions
Deck:Satisfactory Condition
Superstructure:Fair Condition
Substructure:Satisfactory Condition
Structural Evaluation:Somewhat better than minimum adequacy to tolerate being left in place as is
Sufficiency Rating (%):57.4