US Bridges

Edna Ck.-L.Owl Rd. over Crooked River

Good

Boise County, Idaho · 8 MI East of Pilot Peak · Structure no. 040203000001111

Built
1976
49 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
62 ft
1 main span
Daily traffic
150
2018 count
Owner
Federal
U.S. Forest Service

About this bridge

Edna Ck.-L.Owl Rd. over Crooked River is a prestressed concrete stringer/multi-beam or girder carrying Edna Ck.-L.Owl Rd. over Crooked River in Boise County, Idaho. It was built in 1976, so it is 49 years old, older than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 150 vehicles a day, roughly 10% of them trucks, projected to reach 225 by 2045. The structure is 62 ft (18.9 m) long and 28 ft wide. If it were closed, the detour would be 18.6 mi (30 km).

CarriesEdna Ck.-L.Owl Rd.
CrossesCrooked River
Location8 MI East of Pilot Peak
RouteFederal Lands Road 384
StateIdaho
Coordinates43.95934, -115.5324
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.4 US tons
Inventory rating13.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length62 ft (18.9 m)
Longest span60 ft (18.3 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2018)
Projected traffic225 by 2045
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18.6 mi (30 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Edna Ck.-L.Owl Rd. over Crooked River built?

It was built in 1976, making it 49 years old in 2025.

What condition is Edna Ck.-L.Owl Rd. over Crooked River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does Edna Ck.-L.Owl Rd. over Crooked River carry?

About 150 vehicles per day (2018 count), of which roughly 10% are trucks.

How long is Edna Ck.-L.Owl Rd. over Crooked River?

The structure is 62 ft (18.9 m) long with a longest span of 60 ft (18.3 m) and a deck 28 ft wide.

Who owns Edna Ck.-L.Owl Rd. over Crooked River?

It is owned by the U.S. Forest Service.