US Bridges

IRR/N12 over Hoboe Creek

Fair

Knox County, Nebraska · 12W Crofton · Structure no. S012 17716

Built
1962
63 years old, rebuilt 2013
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
110 ft
3 main spans
Daily traffic
1,235
2018 count
Owner
State
State Highway Agency

About this bridge

IRR/N12 over Hoboe Creek is a concrete continuous slab carrying IRR/N12 over Hoboe Creek in Knox County, Nebraska. It was built in 1962 and reconstructed in 2013, so it is 63 years old, older than the Nebraska average of 47.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 1,235 vehicles a day, roughly 9% of them trucks, projected to reach 1,729 by 2038. The structure is 110 ft (33.5 m) long and 33 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

Location

Open in Google Maps
CarriesIRR/N12
CrossesHoboe Creek
Location12W Crofton
RouteState Highway 12
CountyKnox County
StateNebraska
Coordinates42.7278, -97.7408
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.8 US tons
Inventory rating24.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length110 ft (33.5 m)
Longest span44 ft (13.4 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,235 (2018)
Projected traffic1,729 by 2038
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.1 mi (50 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR/N12 over Hoboe Creek built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2013.

What condition is IRR/N12 over Hoboe 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 October 2024.

How much traffic does IRR/N12 over Hoboe Creek carry?

About 1,235 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is IRR/N12 over Hoboe Creek?

The structure is 110 ft (33.5 m) long with a longest span of 44 ft (13.4 m) and a deck 33 ft wide.

Who owns IRR/N12 over Hoboe Creek?

It is owned by the State Highway Agency.