US Bridges

Lower Deadman 307 over S. Deadman Creek

Fair

Garfield County, Washington · 11.3 N JCT SR 12 · Structure no. 084071000000000

Built
1957
68 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
31 ft
1 main span
Daily traffic
230
2019 count
Owner
County
County Highway Agency

About this bridge

Lower Deadman 307 over S. Deadman Creek is a concrete stringer/multi-beam or girder carrying Lower Deadman 307 over S. Deadman Creek in Garfield County, Washington. It was built in 1957, so it is 68 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: open, posting recommended but not legally implemented.

It carries about 230 vehicles a day, roughly 5% of them trucks, projected to reach 255 by 2039. The structure is 31 ft (9.4 m) long and 32 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

CarriesLower Deadman 307
CrossesS. Deadman Creek
Location11.3 N JCT SR 12
RouteCounty Highway 3070
Coordinates46.58982, -117.58195
Functional classRural Major Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, posting recommended but not legally implemented
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating33.2 US tons
Inventory rating20 US tons

Structure

MaterialConcrete
DeckOther
Main spans1
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span29 ft (8.7 m)
Deck width32 ft (9.9 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic230 (2019)
Projected traffic255 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$471,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Lower Deadman 307 over S. Deadman Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is Lower Deadman 307 over S. Deadman Creek 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 Lower Deadman 307 over S. Deadman Creek carry?

About 230 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Lower Deadman 307 over S. Deadman Creek?

The structure is 31 ft (9.4 m) long with a longest span of 29 ft (8.7 m) and a deck 32 ft wide.

Who owns Lower Deadman 307 over S. Deadman Creek?

It is owned by the County Highway Agency.