US Bridges

Shybear Wy NW over Wetland 1 Tributary

Fair

King County, Washington · 0.15 M S of NW Talus DR · Structure no. 087137000000000

Built
2000
25 years old
Condition
Fair
inspected September 2023
Type
Culvert
Steel
Length
57 ft
3 main spans
Daily traffic
280
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Shybear Wy NW over Wetland 1 Tributary is a steel culvert carrying Shybear Wy NW over Wetland 1 Tributary in King County, Washington. It was built in 2000, so it is 25 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 280 vehicles a day, roughly 5% of them trucks, projected to reach 700 by 2041. The structure is 57 ft (17.4 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesShybear Wy NW
CrossesWetland 1 Tributary
Location0.15 M S of NW Talus DR
RouteCity Street 590
CountyKing County
StateWashington
Coordinates47.53061, -122.06872
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating66 US tons
Inventory rating51 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span16 ft (4.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic280 (2021)
Projected traffic700 by 2041
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$2 million (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Shybear Wy NW over Wetland 1 Tributary built?

It was built in 2000, making it 25 years old in 2025.

What condition is Shybear Wy NW over Wetland 1 Tributary 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 September 2023.

How much traffic does Shybear Wy NW over Wetland 1 Tributary carry?

About 280 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Shybear Wy NW over Wetland 1 Tributary?

The structure is 57 ft (17.4 m) long with a longest span of 16 ft (4.9 m).

Who owns Shybear Wy NW over Wetland 1 Tributary?

It is owned by the City or Municipal Highway Agency.