US Bridges

Round Valley RD over Round Valley Creek

Good

Valley County, Idaho · 2.3 N. 2.7 E.Smiths Ferry · Structure no. 000000000028566

Built
1992
33 years old
Condition
Good
inspected August 2021
Type
Slab
Prestressed Concrete
Length
42 ft
1 main span
Daily traffic
100
2023 count
Owner
County
County Highway Agency

About this bridge

Round Valley RD over Round Valley Creek is a prestressed concrete slab carrying Round Valley RD over Round Valley Creek in Valley County, Idaho. It was built in 1992, so it is 33 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 100 vehicles a day, roughly 5% of them trucks, projected to reach 150 by 2039. The structure is 42 ft (12.8 m) long and 16 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesRound Valley RD
CrossesRound Valley Creek
Location2.3 N. 2.7 E.Smiths Ferry
RouteCounty Highway 0
StateIdaho
Coordinates44.33511, -116.03583
Functional classRural Minor Collector

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 inspectionAugust 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating68 US tons
Inventory rating51 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length42 ft (12.8 m)
Longest span41 ft (12.5 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic150 by 2039
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Round Valley RD over Round Valley Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is Round Valley RD over Round Valley Creek 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 August 2021.

How much traffic does Round Valley RD over Round Valley Creek carry?

About 100 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Round Valley RD over Round Valley Creek?

The structure is 42 ft (12.8 m) long with a longest span of 41 ft (12.5 m) and a deck 16 ft wide.

Who owns Round Valley RD over Round Valley Creek?

It is owned by the County Highway Agency.