US Bridges

Ramp over E Issaquah Creek

Good

King County, Washington · 2.1 E JCT SR 900 · Structure no. 0016010B0000000

Built
2003
22 years old
Condition
Good
inspected June 2023
Type
Box Beam or Girders - Single or Spread
Steel Continuous
Length
492 ft
2 main spans
Daily traffic
2,855
2023 count
Owner
State
State Highway Agency

About this bridge

Ramp over E Issaquah Creek is a steel continuous box beam or girders - single or spread carrying Ramp over E Issaquah Creek in King County, Washington. It was built in 2003, so it is 22 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 2,855 vehicles a day, roughly 6% of them trucks, projected to reach 3,729 by 2036. The structure is 492 ft (150 m) long and 38 ft wide.

Location

Open in Google Maps
CarriesRamp
CrossesE Issaquah Creek
Location2.1 E JCT SR 900
RouteInterstate 90
CountyKing County
StateWashington
Coordinates47.53136, -122.02561
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating83 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length492 ft (150 m)
Longest span242 ft (73.9 m)
Deck width38 ft (11.7 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,855 (2023)
Projected traffic3,729 by 2036
Trucks6%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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$8.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Ramp over E Issaquah Creek built?

It was built in 2003, making it 22 years old in 2025.

What condition is Ramp over E 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 June 2023.

How much traffic does Ramp over E Issaquah Creek carry?

About 2,855 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Ramp over E Issaquah Creek?

The structure is 492 ft (150 m) long with a longest span of 242 ft (73.9 m) and a deck 38 ft wide.

Who owns Ramp over E Issaquah Creek?

It is owned by the State Highway Agency.