US Bridges

Fir Grove Road over Camas Creek

Poor

Camas County, Idaho · 3.4 S. 2.4 E. Fairfield · Structure no. 000000000023815

Built
1965
60 years old, rebuilt 1982
Condition
Poor
inspected October 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
25 ft
2 main spans
Daily traffic
30
2023 count
Owner
County
County Highway Agency

About this bridge

Fir Grove Road over Camas Creek is a wood or timber stringer/multi-beam or girder carrying Fir Grove Road over Camas Creek in Camas County, Idaho. It was built in 1965 and reconstructed in 1982, so it is 60 years old, older than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 30 vehicles a day, roughly 50% of them trucks, projected to reach 45 by 2042. The structure is 25 ft (7.6 m) long and 20 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesFir Grove Road
CrossesCamas Creek
Location3.4 S. 2.4 E. Fairfield
RouteCounty Highway 0
StateIdaho
Coordinates43.29158, -114.74644
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.6 US tons
Inventory rating33.7 US tons

Structure

MaterialWood or Timber
DeckCorrugated steel
Main spans2
Design loadH 20
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$312,000 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Fir Grove Road over Camas Creek built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1982.

What condition is Fir Grove Road over Camas Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

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 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m) and a deck 20 ft wide.

Who owns Fir Grove Road over Camas Creek?

It is owned by the County Highway Agency.