US Bridges

SH 3 over Renfro Creek

Good

Benewah County, Idaho · @ Santa Scl · Structure no. 000000000010111

Built
1994
31 years old
Condition
Good
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
33 ft
1 main span
Daily traffic
1,700
2023 count
Owner
State
State Highway Agency

About this bridge

SH 3 over Renfro Creek is a prestressed concrete box beam or girders - multiple carrying SH 3 over Renfro Creek in Benewah County, Idaho. It was built in 1994, so it is 31 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 1,700 vehicles a day, roughly 16% of them trucks, projected to reach 2,550 by 2042. The structure is 33 ft (10.1 m) long and 36 ft wide. If it were closed, the detour would be 18 mi (29 km).

CarriesSH 3
CrossesRenfro Creek
Location@ Santa Scl
RouteState Highway 3
StateIdaho
Coordinates47.14897, -116.44708
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96 US tons
Inventory rating47 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length33 ft (10.1 m)
Longest span33 ft (10.1 m)
Deck width36 ft (11 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,700 (2023)
Projected traffic2,550 by 2042
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SH 3 over Renfro Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is SH 3 over Renfro 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 July 2024.

How much traffic does SH 3 over Renfro Creek carry?

About 1,700 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is SH 3 over Renfro Creek?

The structure is 33 ft (10.1 m) long with a longest span of 33 ft (10.1 m) and a deck 36 ft wide.

Who owns SH 3 over Renfro Creek?

It is owned by the State Highway Agency.