US Bridges

Rainier Blvd. N. over East Fork Issaquah Creek

Good

King County, Washington · 0.3 MI S of I-90 · Structure no. 087199000000000

Built
2004
21 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
57 ft
1 main span
Daily traffic
7,500
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Rainier Blvd. N. over East Fork Issaquah Creek is a prestressed concrete stringer/multi-beam or girder carrying Rainier Blvd. N. over East Fork Issaquah Creek in King County, Washington. It was built in 2004, so it is 21 years old, younger 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 7,500 vehicles a day, roughly 5% of them trucks, projected to reach 9,100 by 2042. The structure is 57 ft (17.4 m) long and 48 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRainier Blvd. N.
CrossesEast Fork Issaquah Creek
Location0.3 MI S of I-90
RouteCity Street 590
Coordinates47.53575, -122.03753
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating38.6 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length57 ft (17.4 m)
Longest span55 ft (16.8 m)
Deck width48 ft (14.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,500 (2022)
Projected traffic9,100 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$866,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Rainier Blvd. N. over East Fork Issaquah Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is Rainier Blvd. N. over East Fork Issaquah 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 October 2024.

How much traffic does Rainier Blvd. N. over East Fork Issaquah Creek carry?

About 7,500 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Rainier Blvd. N. over East Fork Issaquah Creek?

The structure is 57 ft (17.4 m) long with a longest span of 55 ft (16.8 m) and a deck 48 ft wide.

Who owns Rainier Blvd. N. over East Fork Issaquah Creek?

It is owned by the City or Municipal Highway Agency.