US Bridges

58th Ave S.E. over Bear Creek

Fair

Snohomish County, Washington · 0.2 N King CO Line · Structure no. 084600000000000

Built
1969
56 years old
Condition
Fair
inspected October 2024
Type
Channel Beam
Concrete
Length
30 ft
1 main span
Daily traffic
1,146
2021 count
Owner
County
County Highway Agency

About this bridge

58th Ave S.E. over Bear Creek is a concrete channel beam carrying 58th Ave S.E. over Bear Creek in Snohomish County, Washington. It was built in 1969, so it is 56 years old, older 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 1,146 vehicles a day, roughly 18% of them trucks, projected to reach 2,000 by 2046. The structure is 30 ft (9.2 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries58th Ave S.E.
CrossesBear Creek
Location0.2 N King CO Line
RouteCounty Highway 16100
Coordinates47.77842, -122.15492
Functional classUrban Local

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating32 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckOther
Main spans1
Design loadHS 20
Structure length30 ft (9.2 m)
Longest span29 ft (8.7 m)
Deck width24 ft (7.4 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,146 (2021)
Projected traffic2,000 by 2046
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.5 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 58th Ave S.E. over Bear Creek built?

It was built in 1969, making it 56 years old in 2025.

What condition is 58th Ave S.E. over Bear Creek 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 58th Ave S.E. over Bear Creek carry?

About 1,146 vehicles per day (2021 count), of which roughly 18% are trucks.

How long is 58th Ave S.E. over Bear Creek?

The structure is 30 ft (9.2 m) long with a longest span of 29 ft (8.7 m) and a deck 24 ft wide.

Who owns 58th Ave S.E. over Bear Creek?

It is owned by the County Highway Agency.