US Bridges

Bed Rock Flat Road over Hog Creek

Good

Washington County, Idaho · 0.5S 9.3E Midvale · Structure no. 000000000028891

Built
2002
23 years old
Condition
Good
inspected June 2022
Type
Culvert
Steel
Length
31 ft
4 main spans
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

Bed Rock Flat Road over Hog Creek is a steel culvert carrying Bed Rock Flat Road over Hog Creek in Washington County, Idaho. It was built in 2002, so it is 23 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 50 vehicles a day, roughly 5% of them trucks, projected to reach 75 by 2039. The structure is 31 ft (9.4 m) long and 40 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesBed Rock Flat Road
CrossesHog Creek
Location0.5S 9.3E Midvale
RouteCounty Highway 0
StateIdaho
Coordinates44.46269, -116.54722
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJune 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans4
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span6 ft (1.8 m)
Deck width40 ft (12.2 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic75 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Bed Rock Flat Road over Hog Creek built?

It was built in 2002, making it 23 years old in 2025.

What condition is Bed Rock Flat Road over Hog 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 June 2022.

How much traffic does Bed Rock Flat Road over Hog Creek carry?

About 50 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Bed Rock Flat Road over Hog Creek?

The structure is 31 ft (9.4 m) long with a longest span of 6 ft (1.8 m) and a deck 40 ft wide.

Who owns Bed Rock Flat Road over Hog Creek?

It is owned by the County Highway Agency.