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Nearby Bridges in NBI 2021: 2


I-5 over STILLAGUAMISH R (Route: 5)
Num:0008791A0000000x
Open: no restriction [A]
Built: 1971, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0 Miles (0.1 Kilometers)

Bridge Type
Main Span(s): Steel continuous [4] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 201.5 m = 661.1 ft
Main Spans: 4 at 61.9 m = 203.1 ft
Approach Spans: 0
Skew: 16
Width, Roadway: 15.8 m = 51.8 ft (3 Lanes) and Out-To-Out: 16.8 m = 55.1 ft for a 18.3 m = 60.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Snohomish County [061], Washington [53]
Owned by State Highway Agency [01], DOT District: 1
0.7 N JCT SR 530
Condition
Deck: Satisfactory [6]
Superstructure: Fair [5]
Substructure: Satisfactory [6]
Loading
Design: MS 18+Mod / HS 20+Mod [6]
Operating: 58 metric ton = 63.8 tons (Load Factor(LF) [1])
Inventory: 35.4 metric ton = 38.9 tons (Load Factor(LF) [1])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: September 1999 [999] and Frequency: 24
Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 45439 (2019) and Trucks: 9%
Future ADT: 65795 (In 2039 )
I-5 over STILLAGUAMISH RIVER (Route: 5)
Num:0001652A0000000x
Posted for load [P]
Built: 1933, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.1 Miles (0.1 Kilometers)

Bridge Type
Main Span(s): Steel [3] Truss - Thru [10]
Approach Span(s): Concrete [1] Tee beam [04]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 261.8 m = 859.0 ft
Main Spans: 3 at 61 m = 200.1 ft
Approach Spans: 5
Skew: 0
Width, Roadway: 14.6 m = 47.9 ft (3 Lanes) and Out-To-Out: 15 m = 49.2 ft for a 17.7 m = 58.1 ft approaching roadway.
Vertical Clearance: 5.03 m = 16.5 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Snohomish County [061], Washington [53]
Owned by State Highway Agency [01], DOT District: 1
0.7 N JCT SR 530
Condition
Deck: Good [7]
Superstructure: Satisfactory [6]
Substructure: Satisfactory [6]
Loading
Design: M 13.5 / H 15 [2]
Operating: 37.2 metric ton = 40.9 tons (Load Factor(LF) [1])
Inventory: 22.7 metric ton = 25.0 tons (Load Factor(LF) [1])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: March 2020 [0320] and Frequency: 24
Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 45439 (2019) and Trucks: 9%
Future ADT: 65795 (In 2039 )

Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S  - Dismantled and/or in storage. L -  Severe loss of historic integrity due to alteration.

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