US Bridges

Road over E Fk Miller River

Fair

King County, Washington · 3.7 MI S of 6410/HWY JCT · Structure no. 060506000001321

Built
1964
61 years old, rebuilt 2010
Condition
Fair
inspected October 2022
Type
Frame
Concrete Continuous
Length
130 ft
3 main spans
Daily traffic
44
1982 count
Owner
Federal
U.S. Forest Service

About this bridge

Road over E Fk Miller River is a concrete continuous frame carrying Road over E Fk Miller River in King County, Washington. It was built in 1964 and reconstructed in 2010, so it is 61 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 44 vehicles a day, projected to reach 66 by 2045. The structure is 130 ft (39.6 m) long and 19 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

Location

Open in Google Maps
CarriesRoad
CrossesE Fk Miller River
Location3.7 MI S of 6410/HWY JCT
RouteFederal Lands Road 64120
CountyKing County
StateWashington
Coordinates47.65098, -121.37295
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2022
Inspection intervalevery 48 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61.1 US tons
Inventory rating41 US tons

Structure

Structure typeFrame
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length130 ft (39.6 m)
Longest span85 ft (25.9 m)
Deck width19 ft (5.8 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44 (1982)
Projected traffic66 by 2045
Trucks—
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 E Fk Miller River built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 2010.

What condition is Road over E Fk Miller 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 October 2022.

How much traffic does Road over E Fk Miller River carry?

About 44 vehicles per day (1982 count).

How long is Road over E Fk Miller River?

The structure is 130 ft (39.6 m) long with a longest span of 85 ft (25.9 m) and a deck 19 ft wide.

Who owns Road over E Fk Miller River?

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