US Bridges

Road over Taylor River

Fair

King County, Washington · 12.6 MI W of I-90/56 JCT · Structure no. 060505000001531

Built
1988
37 years old
Condition
Fair
inspected August 2023
Type
Tee Beam
Prestressed Concrete
Length
144 ft
1 main span
Daily traffic
128
1992 count
Owner
Federal
U.S. Forest Service

About this bridge

Road over Taylor River is a prestressed concrete tee beam carrying Road over Taylor River in King County, Washington. It was built in 1988, so it is 37 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 128 vehicles a day, roughly 5% of them trucks, projected to reach 192 by 2045. The structure is 144 ft (44 m) long and 16 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesRoad
CrossesTaylor River
Location12.6 MI W of I-90/56 JCT
RouteFederal Lands Road 56
Coordinates47.55458, -121.53472
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating100.1 US tons
Inventory rating78 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length144 ft (44 m)
Longest span142 ft (43.4 m)
Deck width16 ft (5 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic128 (1992)
Projected traffic192 by 2045
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Road over Taylor River built?

It was built in 1988, making it 37 years old in 2025.

What condition is Road over Taylor River 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 August 2023.

How much traffic does Road over Taylor River carry?

About 128 vehicles per day (1992 count), of which roughly 5% are trucks.

How long is Road over Taylor River?

The structure is 144 ft (44 m) long with a longest span of 142 ft (43.4 m) and a deck 16 ft wide.

Who owns Road over Taylor River?

It is owned by the U.S. Forest Service.