I-90 over EAST CHANNEL-LK WASH (Route: 90)
Num:0011490A0000000x
Open: no restriction [A]
Built: 1981, Reconstructed: N/A [0000]
Historic: Bridge is eligible for the NRHP. [2]

Google Streetview (If Available)

Rough Distance: 0.3 Miles (0.4 Kilometers)

Bridge Type
Main Span(s): Steel continuous [4] Box Beam or girders - Single or Spread [06]
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: 677.9 m = 2224.2 ft
Main Spans: 9 at 91.4 m = 299.9 ft
Approach Spans: 0
Skew: 99
Width, Roadway: 24.4 m = 80.1 ft (6 Lanes) and Out-To-Out: 28 m = 91.9 ft for a 24.4 m = 80.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 16.5 m = 54.1 ft

Location
Unknown [00000]: King County [033], Washington [53]
Owned by State Highway Agency [01], DOT District: 1
5.9 E JCT I-5

Condition
Deck: Good [7]
Superstructure: Satisfactory [6]
Substructure: Good [7]
Loading
Design: MS 18+Mod / HS 20+Mod [6]
Operating: 74.4 metric ton = 81.8 tons (Load Factor(LF) [1])
Inventory: 44.4 metric ton = 48.8 tons (Load Factor(LF) [1])

Appraisal
Structural: Equal to present minimum criteria [6]
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 foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: September 2018 [0918] 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: 74752 (2019) and Trucks: 4%
Future ADT: 105549 (In 2039 )

I-90 over EAST CHANNEL-LK WASH (Route: 90)
Num:0012912A0000000x
Open: no restriction [A]
Built: 1988, Reconstructed: N/A [0000]
Historic: Bridge is eligible for the NRHP. [2]

Google Streetview (If Available)

Rough Distance: 0.3 Miles (0.4 Kilometers)

Bridge Type
Main Span(s): Steel continuous [4] Box beam or girders - Multiple [05]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Latex Concrete or similar additive [3]

Bridge Dimensions
Length: 677.9 m = 2224.2 ft
Main Spans: 9 at 91.4 m = 299.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 33.7 m = 110.6 ft (5 Lanes) and Out-To-Out: 34.6 m = 113.5 ft for a 46.3 m = 151.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 19.8 m = 65.0 ft

Location
Unknown [00000]: King County [033], Washington [53]
Owned by State Highway Agency [01], DOT District: 1
5.9 E JCT I-5

Condition
Deck: Satisfactory [6]
Superstructure: Satisfactory [6]
Substructure: Satisfactory [6]
Loading
Design: MS 18+Mod / HS 20+Mod [6]
Operating: 65.3 metric ton = 71.8 tons (Load Factor(LF) [1])
Inventory: 39 metric ton = 42.9 tons (Load Factor(LF) [1])

Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Superior to present desirable criteria [9]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: September 2018 [0918] and Frequency: 24

Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 3.1 km = 1.9 mi
Traffic
ADT: 74752 (2019) and Trucks: 4%
Future ADT: 105549 (In 2039 )

EAST MERCER WAY over I-90 (Route: 0)
Num:0013221A0000000x
Open: no restriction [A]
Built: 1988, Reconstructed: N/A [0000]
Historic: Bridge is eligible for the NRHP. [2]

Google Streetview (If Available)

Rough Distance: 0.4 Miles (0.7 Kilometers)

Bridge Type
Main Span(s): Prestressed concrete [5] Box Beam or girders - Single or Spread [06]
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: 72.5 m = 237.9 ft
Main Spans: 3 at 29 m = 95.1 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 12.8 m = 42.0 ft (3 Lanes) and Out-To-Out: 37 m = 121.4 ft for a 14 m = 45.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
Unknown [00000]: King County [033], Washington [53]
Owned by State Highway Agency [01], DOT District: 1
5.7 E JCT I-5

Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 18+Mod / HS 20+Mod [6]
Operating: 35.6 metric ton = 39.2 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 27.2 metric ton = 29.9 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])

Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Equal to present desirable criteria [8]
Waterway: N/A [N] and Bridge not over waterway. [N]
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 km = 0.0 mi
Traffic
ADT: 8510 (2007) and Trucks: 2%
Future ADT: 0 (In 2036 )