US Bridges

138th Pl NE over Trib Quilceda Creek

Good

Snohomish County, Washington · 1.4 MI E Int I-5 · Structure no. 086112000000000

Built
1994
31 years old
Condition
Good
inspected August 2023
Type
Slab
Prestressed Concrete
Length
44 ft
1 main span
Daily traffic
446
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

138th Pl NE over Trib Quilceda Creek is a prestressed concrete slab carrying 138th Pl NE over Trib Quilceda Creek in Snohomish County, Washington. It was built in 1994, so it is 31 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 446 vehicles a day, roughly 5% of them trucks, projected to reach 1,000 by 2045. The structure is 44 ft (13.4 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Carries138th Pl NE
CrossesTrib Quilceda Creek
Location1.4 MI E Int I-5
RouteCity Street 475
Coordinates48.12155, -122.15705
Functional classUrban Local

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 inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating72 US tons
Inventory rating34 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length44 ft (13.4 m)
Longest span42 ft (12.8 m)
Deck width40 ft (12.2 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic446 (2019)
Projected traffic1,000 by 2045
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 138th Pl NE over Trib Quilceda Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is 138th Pl NE over Trib Quilceda 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 August 2023.

How much traffic does 138th Pl NE over Trib Quilceda Creek carry?

About 446 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is 138th Pl NE over Trib Quilceda Creek?

The structure is 44 ft (13.4 m) long with a longest span of 42 ft (12.8 m) and a deck 40 ft wide.

Who owns 138th Pl NE over Trib Quilceda Creek?

It is owned by the City or Municipal Highway Agency.