US Bridges

Oneida Narrows RD over Bear River (redpoint Br)

FairPosted for load

Franklin County, Idaho · 9.2 N. 5.5 E. Preston · Structure no. 000000000023365

Built
1980
45 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
104 ft
2 main spans
Daily traffic
50
2023 count
Owner
Private
Private (other than railroad)

About this bridge

Oneida Narrows RD over Bear River (redpoint Br) is a steel stringer/multi-beam or girder carrying Oneida Narrows RD over Bear River (redpoint Br) in Franklin County, Idaho. It was built in 1980, so it is 45 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 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 75 by 2039. The structure is 104 ft (31.7 m) long and 20 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

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CarriesOneida Narrows RD
CrossesBear River (redpoint Br)
Location9.2 N. 5.5 E. Preston
CountyFranklin County
StateIdaho
Coordinates42.23108, -111.76803
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be 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 alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating17 US tons
Inventory rating13 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans2
Design loadHS 20
Structure length104 ft (31.7 m)
Longest span51 ft (15.5 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic75 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerPrivate (other than railroad)
Maintained byPrivate (other than railroad)
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$832,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Oneida Narrows RD over Bear River (redpoint Br) built?

It was built in 1980, making it 45 years old in 2025.

What condition is Oneida Narrows RD over Bear River (redpoint Br) 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 April 2024.

How much traffic does Oneida Narrows RD over Bear River (redpoint Br) carry?

About 50 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Oneida Narrows RD over Bear River (redpoint Br)?

The structure is 104 ft (31.7 m) long with a longest span of 51 ft (15.5 m) and a deck 20 ft wide.

Who owns Oneida Narrows RD over Bear River (redpoint Br)?

It is owned by the Private (other than railroad).