US Bridges

I-90 EB over Talapus Creek

Good

King County, Washington · 15.6 E JCT SR 202 · Structure no. 002001040000000

Built
1972
53 years old
Condition
Good
inspected July 2024
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
18,981
2023 count
Owner
State
State Highway Agency

About this bridge

I-90 EB over Talapus Creek is a concrete continuous culvert carrying I-90 EB over Talapus Creek in King County, Washington. It was built in 1972, so it is 53 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 18,981 vehicles a day, roughly 18% of them trucks, projected to reach 25,795 by 2039. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 9.9 mi (16 km).

CarriesI-90 EB
CrossesTalapus Creek
Location15.6 E JCT SR 202
RouteInterstate 90
Coordinates47.39578, -121.51286
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.4 US tons
Inventory rating59 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,981 (2023)
Projected traffic25,795 by 2039
Trucks18%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$700,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I-90 EB over Talapus Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is I-90 EB over Talapus Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.

How much traffic does I-90 EB over Talapus Creek carry?

About 18,981 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is I-90 EB over Talapus Creek?

The structure is 22 ft (6.7 m) long with a longest span of 11 ft (3.4 m).

Who owns I-90 EB over Talapus Creek?

It is owned by the State Highway Agency.