US Bridges

Old Hornet Road over Hornet Creek

Fair

Adams County, Idaho · 1.2 N. 2.2 W. Council · Structure no. 000000000026425

Built
1971
54 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
51 ft
1 main span
Daily traffic
100
2023 count
Owner
County
County Highway Agency

About this bridge

Old Hornet Road over Hornet Creek is a steel stringer/multi-beam or girder carrying Old Hornet Road over Hornet Creek in Adams County, Idaho. It was built in 1971, so it is 54 years old, older 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 100 vehicles a day, roughly 11% of them trucks, projected to reach 150 by 2042. The structure is 51 ft (15.5 m) long and 15 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesOld Hornet Road
CrossesHornet Creek
Location1.2 N. 2.2 W. Council
RouteCounty Highway 0
CountyAdams County
StateIdaho
Coordinates44.74633, -116.48306
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20
Structure length51 ft (15.5 m)
Longest span49 ft (14.8 m)
Deck width15 ft (4.6 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic150 by 2042
Trucks11%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$513,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Hornet Road over Hornet Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is Old Hornet Road over Hornet Creek 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 August 2024.

How much traffic does Old Hornet Road over Hornet Creek carry?

About 100 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is Old Hornet Road over Hornet Creek?

The structure is 51 ft (15.5 m) long with a longest span of 49 ft (14.8 m) and a deck 15 ft wide.

Who owns Old Hornet Road over Hornet Creek?

It is owned by the County Highway Agency.