US Bridges

Route 109 over Quinault River

Fair

Grays Harbor County, Washington · .9 KM N Cuitan Street · Structure no. 0000P06117B0109

Built
1963
62 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
634 ft
4 main spans
Daily traffic
50
2021 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

Route 109 over Quinault River is a concrete continuous box beam or girders - single or spread carrying Route 109 over Quinault River in Grays Harbor County, Washington. It was built in 1963, so it is 62 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 50 vehicles a day, roughly 40% of them trucks, projected to reach 120 by 2039. The structure is 634 ft (193.2 m) long and 33 ft wide. If it were closed, the detour would be 61.5 mi (99 km).

CarriesRoute 109
CrossesQuinault River
Location.9 KM N Cuitan Street
RouteFederal Lands Road 109
Coordinates47.348, -124.2847
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.7 US tons
Inventory rating35.7 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length634 ft (193.2 m)
Longest span159 ft (48.6 m)
Deck width33 ft (10.1 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2021)
Projected traffic120 by 2039
Trucks40%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed61.5 mi (99 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Indian Affairs
Maintained byBureau of Indian Affairs
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Route 109 over Quinault River built?

It was built in 1963, making it 62 years old in 2025.

What condition is Route 109 over Quinault 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 2024.

How much traffic does Route 109 over Quinault River carry?

About 50 vehicles per day (2021 count), of which roughly 40% are trucks.

How long is Route 109 over Quinault River?

The structure is 634 ft (193.2 m) long with a longest span of 159 ft (48.6 m) and a deck 33 ft wide.

Who owns Route 109 over Quinault River?

It is owned by the Bureau of Indian Affairs.