US Bridges

Ceres Hill Road over Bunker Creek

Fair

Lewis County, Washington · 3.0 NW Adna · Structure no. 079754000000000

Built
1963
62 years old
Condition
Fair
inspected December 2022
Type
Slab
Concrete Continuous
Length
113 ft
5 main spans
Daily traffic
159
2018 count
Owner
County
County Highway Agency

About this bridge

Ceres Hill Road over Bunker Creek is a concrete continuous slab carrying Ceres Hill Road over Bunker Creek in Lewis 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 159 vehicles a day, roughly 20% of them trucks, projected to reach 288 by 2038. The structure is 113 ft (34.4 m) long and 26 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesCeres Hill Road
CrossesBunker Creek
Location3.0 NW Adna
RouteCounty Highway 28001
CountyLewis County
StateWashington
Coordinates46.6445, -123.11877
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 inspectionDecember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43 US tons
Inventory rating25 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 15
Structure length113 ft (34.4 m)
Longest span22 ft (6.7 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic159 (2018)
Projected traffic288 by 2038
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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$1.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Ceres Hill Road over Bunker Creek built?

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

What condition is Ceres Hill Road over Bunker 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 December 2022.

How much traffic does Ceres Hill Road over Bunker Creek carry?

About 159 vehicles per day (2018 count), of which roughly 20% are trucks.

How long is Ceres Hill Road over Bunker Creek?

The structure is 113 ft (34.4 m) long with a longest span of 22 ft (6.7 m) and a deck 26 ft wide.

Who owns Ceres Hill Road over Bunker Creek?

It is owned by the County Highway Agency.