US Bridges

Neibaur Road over Sunbeam Creek

Fair

Power County, Idaho · 1.4N 4.8E American Falls · Structure no. 000000000023525

Built
1967
58 years old
Condition
Fair
inspected April 2024
Type
Tee Beam
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
80
2023 count
Owner
County
County Highway Agency

About this bridge

Neibaur Road over Sunbeam Creek is a prestressed concrete tee beam carrying Neibaur Road over Sunbeam Creek in Power County, Idaho. It was built in 1967, so it is 58 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.

It carries about 80 vehicles a day, roughly 10% of them trucks, projected to reach 120 by 2039. The structure is 50 ft (15.2 m) long and 28 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesNeibaur Road
CrossesSunbeam Creek
Location1.4N 4.8E American Falls
RouteCounty Highway 0
CountyPower County
StateIdaho
Coordinates42.80506, -112.76117
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57 US tons
Inventory rating18 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length50 ft (15.2 m)
Longest span48 ft (14.6 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2023)
Projected traffic120 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$520,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Neibaur Road over Sunbeam Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is Neibaur Road over Sunbeam 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 April 2024.

How much traffic does Neibaur Road over Sunbeam Creek carry?

About 80 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Neibaur Road over Sunbeam Creek?

The structure is 50 ft (15.2 m) long with a longest span of 48 ft (14.6 m) and a deck 28 ft wide.

Who owns Neibaur Road over Sunbeam Creek?

It is owned by the County Highway Agency.