US Bridges

Fir Grove Road over Camas Creek

Fair

Camas County, Idaho · 3.4 S. 2.4 E. Fairfield · Structure no. 000000000023805

Built
1986
39 years old
Condition
Fair
inspected November 2021
Type
Culvert
Steel
Length
50 ft
5 main spans
Daily traffic
30
2023 count
Owner
County
County Highway Agency

About this bridge

Fir Grove Road over Camas Creek is a steel culvert carrying Fir Grove Road over Camas Creek in Camas County, Idaho. It was built in 1986, so it is 39 years old, younger than the Idaho average of 45.3 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, roughly 50% of them trucks, projected to reach 45 by 2042. The structure is 50 ft (15.2 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesFir Grove Road
CrossesCamas Creek
Location3.4 S. 2.4 E. Fairfield
RouteCounty Highway 0
CountyCamas County
StateIdaho
Coordinates43.29333, -114.74611
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2021
Inspection intervalevery 48 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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans5
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span7 ft (2.1 m)
Deck width31 ft (9.4 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2023)
Projected traffic45 by 2042
Trucks50%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Fir Grove Road over Camas Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is Fir Grove Road over Camas 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 November 2021.

How much traffic does Fir Grove Road over Camas Creek carry?

About 30 vehicles per day (2023 count), of which roughly 50% are trucks.

How long is Fir Grove Road over Camas Creek?

The structure is 50 ft (15.2 m) long with a longest span of 7 ft (2.1 m) and a deck 31 ft wide.

Who owns Fir Grove Road over Camas Creek?

It is owned by the County Highway Agency.