US Bridges

NE117th ST over I-5

Good

King County, Washington · 2.4 N JCT SR 522 · Structure no. 0007270A0000000

Built
1964
61 years old
Condition
Good
inspected June 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
312 ft
4 main spans
Daily traffic
20,000
2009 count
Owner
State
State Highway Agency

About this bridge

NE117th ST over I-5 is a concrete continuous box beam or girders - multiple carrying NE117th ST over I-5 in King County, Washington. It was built in 1964, so it is 61 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 20,000 vehicles a day, roughly 5% of them trucks, projected to reach 31,880 by 2036. The structure is 312 ft (95.1 m) long and 41 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesNE117th ST
CrossesI-5
Location2.4 N JCT SR 522
RouteCity Street 0
Coordinates47.71394, -122.32758
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73 US tons
Inventory rating43 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length312 ft (95.1 m)
Longest span105 ft (32 m)
Deck width41 ft (12.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,000 (2009)
Projected traffic31,880 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$6.2 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was NE117th ST over I-5 built?

It was built in 1964, making it 61 years old in 2025.

What condition is NE117th ST over I-5 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 NE117th ST over I-5 carry?

About 20,000 vehicles per day (2009 count), of which roughly 5% are trucks.

How long is NE117th ST over I-5?

The structure is 312 ft (95.1 m) long with a longest span of 105 ft (32 m) and a deck 41 ft wide.

Who owns NE117th ST over I-5?

It is owned by the State Highway Agency.