US Bridges

Sant Road over Bear River;sw Niter Br

Good

Caribou County, Idaho · 2.9 S. 2.0 W. Niter · Structure no. 000000000023191

Built
1991
34 years old
Condition
Good
inspected October 2022
Type
Stringer/Multi-beam or Girder
Concrete Continuous
Length
180 ft
2 main spans
Daily traffic
140
2023 count
Owner
County
County Highway Agency

About this bridge

Sant Road over Bear River;sw Niter Br is a concrete continuous stringer/multi-beam or girder carrying Sant Road over Bear River;sw Niter Br in Caribou County, Idaho. It was built in 1991, so it is 34 years old, younger 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 140 vehicles a day, roughly 5% of them trucks, projected to reach 210 by 2039. The structure is 180 ft (54.9 m) long and 30 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesSant Road
CrossesBear River;sw Niter Br
Location2.9 S. 2.0 W. Niter
RouteCounty Highway 0
CountyCaribou County
StateIdaho
Coordinates42.46061, -111.77142
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating77.1 US tons
Inventory rating43 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length180 ft (54.9 m)
Longest span89 ft (27.1 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic140 (2023)
Projected traffic210 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Sant Road over Bear River;sw Niter Br built?

It was built in 1991, making it 34 years old in 2025.

What condition is Sant Road over Bear River;sw Niter Br 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 2022.

How much traffic does Sant Road over Bear River;sw Niter Br carry?

About 140 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Sant Road over Bear River;sw Niter Br?

The structure is 180 ft (54.9 m) long with a longest span of 89 ft (27.1 m) and a deck 30 ft wide.

Who owns Sant Road over Bear River;sw Niter Br?

It is owned by the County Highway Agency.