US Bridges

NE 4th ST over Stormwater Facility

Good

King County, Washington · 0.5 E of HWY 405 · Structure no. 089523000000000

Built
2013
12 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete
Length
50 ft
1 main span
Daily traffic
14,500
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

NE 4th ST over Stormwater Facility is a concrete culvert carrying NE 4th ST over Stormwater Facility in King County, Washington. It was built in 2013, so it is 12 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 14,500 vehicles a day, roughly 5% of them trucks, projected to reach 23,760 by 2038. The structure is 50 ft (15.2 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesNE 4th ST
CrossesStormwater Facility
Location0.5 E of HWY 405
RouteCity Street 75
Coordinates47.61303, -122.18428
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Culvert8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.2 US tons
Inventory rating32.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length50 ft (15.2 m)
Longest span48 ft (14.6 m)
Deck width0 ft (0 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,500 (2018)
Projected traffic23,760 by 2038
Trucks5%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
Detour if closed1.9 mi (3 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.6 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was NE 4th ST over Stormwater Facility built?

It was built in 2013, making it 12 years old in 2025.

What condition is NE 4th ST over Stormwater Facility 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 2024.

How much traffic does NE 4th ST over Stormwater Facility carry?

About 14,500 vehicles per day (2018 count), of which roughly 5% are trucks.

How long is NE 4th ST over Stormwater Facility?

The structure is 50 ft (15.2 m) long with a longest span of 48 ft (14.6 m).

Who owns NE 4th ST over Stormwater Facility?

It is owned by the City or Municipal Highway Agency.