US Bridges

Hewitt Avenue over Burlington Northern RR

Fair

Snohomish County, Washington · 0.1 MI E of Broadway · Structure no. 085737000000000

Built
1989
36 years old
Condition
Fair
inspected October 2024
Type
Tee Beam
Prestressed Concrete
Length
168 ft
2 main spans
Daily traffic
7,565
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Hewitt Avenue over Burlington Northern RR is a prestressed concrete tee beam carrying Hewitt 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 7,565 vehicles a day, roughly 2% of them trucks, projected to reach 9,078 by 2046. The structure is 168 ft (51.1 m) long and 72 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesHewitt Avenue
CrossesBurlington Northern RR
Location0.1 MI E of Broadway
RouteCity Street 420
Coordinates47.97918, -122.19958
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47 US tons
Inventory rating28 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans2 (+2 approach)
Design loadHS 20
Structure length168 ft (51.1 m)
Longest span70 ft (21.2 m)
Deck width72 ft (21.9 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,565 (2022)
Projected traffic9,078 by 2046
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$5.7 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Hewitt Avenue over Burlington Northern RR built?

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

What condition is Hewitt 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 October 2024.

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

About 7,565 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Hewitt Avenue over Burlington Northern RR?

The structure is 168 ft (51.1 m) long with a longest span of 70 ft (21.2 m) and a deck 72 ft wide.

Who owns Hewitt Avenue over Burlington Northern RR?

It is owned by the City or Municipal Highway Agency.