US Bridges

Foster Creek RD over Cub River;foster Crk Br.

Fair

Franklin County, Idaho · 7.3 E. Preston · Structure no. 000000000023331

Built
1998
27 years old
Condition
Fair
inspected October 2023
Type
Frame
Concrete
Length
27 ft
1 main span
Daily traffic
20
2023 count
Owner
County
County Highway Agency

About this bridge

Foster Creek RD over Cub River;foster Crk Br. is a concrete frame carrying Foster Creek RD over Cub River;foster Crk Br. in Franklin County, Idaho. It was built in 1998, so it is 27 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 6 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 20 vehicles a day, roughly 5% of them trucks, projected to reach 30 by 2039. The structure is 27 ft (8.2 m) long and 29 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesFoster Creek RD
CrossesCub River;foster Crk Br.
Location7.3 E. Preston
RouteCounty Highway 0
CountyFranklin County
StateIdaho
Coordinates42.09756, -111.73606
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span27 ft (8.2 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2023)
Projected traffic30 by 2039
Trucks5%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Foster Creek RD over Cub River;foster Crk Br. built?

It was built in 1998, making it 27 years old in 2025.

What condition is Foster Creek RD over Cub River;foster Crk 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 October 2023.

How much traffic does Foster Creek RD over Cub River;foster Crk Br. carry?

About 20 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Foster Creek RD over Cub River;foster Crk Br.?

The structure is 27 ft (8.2 m) long with a longest span of 27 ft (8.2 m) and a deck 29 ft wide.

Who owns Foster Creek RD over Cub River;foster Crk Br.?

It is owned by the County Highway Agency.