US Bridges

Forest Street over Orofino Creek

FairPosted for load

Clearwater County, Idaho · In Orofino; Forest ST · Structure no. 000000000028980

Built
1925
100 years old, rebuilt 1959
Condition
Fair
inspected June 2023
Type
Truss - Thru
Steel
Length
62 ft
1 main span
Daily traffic
70
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Forest Street over Orofino Creek is a steel truss - thru carrying Forest Street over Orofino Creek in Clearwater County, Idaho. It was built in 1925 and reconstructed in 1959, so it is 100 years old, older 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 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: posted for load restriction.

It carries about 70 vehicles a day, roughly 5% of them trucks, projected to reach 105 by 2039. The structure is 62 ft (18.9 m) long and 20 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesForest Street
CrossesOrofino Creek
LocationIn Orofino; Forest ST
RouteCity Street 0
StateIdaho
Coordinates46.48364, -116.23291
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48 US tons
Inventory rating28 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadH 15
Structure length62 ft (18.9 m)
Longest span60 ft (18.3 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70 (2023)
Projected traffic105 by 2039
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$603,000 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Forest Street over Orofino Creek built?

It was built in 1925, making it 100 years old in 2025. It was reconstructed in 1959.

What condition is Forest Street over Orofino 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 June 2023.

How much traffic does Forest Street over Orofino Creek carry?

About 70 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Forest Street over Orofino Creek?

The structure is 62 ft (18.9 m) long with a longest span of 60 ft (18.3 m) and a deck 20 ft wide.

Who owns Forest Street over Orofino Creek?

It is owned by the City or Municipal Highway Agency.