US Bridges

I-90 WB over Tucker Creek

Good

Kittitas County, Washington · 18.2 E JCT SR 906 · Structure no. 002005650000000

Built
1966
59 years old
Condition
Good
inspected September 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
16,884
2023 count
Owner
State
State Highway Agency

About this bridge

I-90 WB over Tucker Creek is a concrete culvert carrying I-90 WB over Tucker Creek in Kittitas County, Washington. It was built in 1966, so it is 59 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 16,884 vehicles a day, roughly 19% of them trucks, projected to reach 25,088 by 2043. The structure is 21 ft (6.4 m) long and 58 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesI-90 WB
CrossesTucker Creek
Location18.2 E JCT SR 906
RouteInterstate 90
Coordinates47.22247, -121.15194
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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47 US tons
Inventory rating36.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length21 ft (6.4 m)
Longest span11 ft (3.4 m)
Deck width58 ft (17.7 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,884 (2023)
Projected traffic25,088 by 2043
Trucks19%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

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$390,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I-90 WB over Tucker Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is I-90 WB over Tucker 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 September 2024.

How much traffic does I-90 WB over Tucker Creek carry?

About 16,884 vehicles per day (2023 count), of which roughly 19% are trucks.

How long is I-90 WB over Tucker Creek?

The structure is 21 ft (6.4 m) long with a longest span of 11 ft (3.4 m) and a deck 58 ft wide.

Who owns I-90 WB over Tucker Creek?

It is owned by the State Highway Agency.