US Bridges

Oakes Avenue over Burlington Northern RR

Fair

Snohomish County, Washington · 0.1MI N. of Hewitt · Structure no. 085736000000000

Built
1989
36 years old
Condition
Fair
inspected April 2023
Type
Tee Beam
Prestressed Concrete
Length
94 ft
1 main span
Daily traffic
1,312
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Oakes Avenue over Burlington Northern RR is a prestressed concrete tee beam carrying Oakes Avenue over Burlington Northern RR in Snohomish County, Washington. It was built in 1989, so it is 36 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,312 vehicles a day, roughly 5% of them trucks, projected to reach 1,575 by 2045. The structure is 94 ft (28.8 m) long and 75 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesOakes Avenue
CrossesBurlington Northern RR
Location0.1MI N. of Hewitt
RouteCity Street 42020
CountySnohomish County
StateWashington
Coordinates47.97972, -122.20444
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37 US tons
Inventory rating22 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1 (+2 approach)
Design loadHS 20
Structure length94 ft (28.8 m)
Longest span76 ft (23.3 m)
Deck width75 ft (22.9 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,312 (2022)
Projected traffic1,575 by 2045
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.8 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Oakes Avenue over Burlington Northern RR built?

It was built in 1989, making it 36 years old in 2025.

What condition is Oakes Avenue over Burlington Northern RR in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does Oakes Avenue over Burlington Northern RR carry?

About 1,312 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Oakes Avenue over Burlington Northern RR?

The structure is 94 ft (28.8 m) long with a longest span of 76 ft (23.3 m) and a deck 75 ft wide.

Who owns Oakes Avenue over Burlington Northern RR?

It is owned by the City or Municipal Highway Agency.