US Bridges

No Data Entered over Hamma Hamma River

Fair

Mason County, Washington · No Data Entered · Structure no. 060901000001046

Built
1950
75 years old
Condition
Fair
inspected September 2023
Type
Frame
Concrete Continuous
Length
80 ft
3 main spans
Daily traffic
30
2006 count
Owner
Federal
U.S. Forest Service

About this bridge

No Data Entered over Hamma Hamma River is a concrete continuous frame carrying No Data Entered over Hamma Hamma River in Mason County, Washington. It was built in 1950, so it is 75 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 30 vehicles a day, projected to reach 45 by 2045. The structure is 80 ft (24.4 m) long and 17 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

Location

Open in Google Maps
CarriesNo Data Entered
CrossesHamma Hamma River
LocationNo Data Entered
RouteFederal Lands Road 24800
CountyMason County
StateWashington
Coordinates47.59494, -123.128
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
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 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
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating25 US tons

Structure

Structure typeFrame
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span50 ft (15.2 m)
Deck width17 ft (5.1 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2006)
Projected traffic45 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 No Data Entered over Hamma Hamma River built?

It was built in 1950, making it 75 years old in 2025.

What condition is No Data Entered over Hamma Hamma 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 September 2023.

How much traffic does No Data Entered over Hamma Hamma River carry?

About 30 vehicles per day (2006 count).

How long is No Data Entered over Hamma Hamma River?

The structure is 80 ft (24.4 m) long with a longest span of 50 ft (15.2 m) and a deck 17 ft wide.

Who owns No Data Entered over Hamma Hamma River?

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