US Bridges

N92 over Oak Creek

Good

Sherman County, Nebraska · In Ashton · Structure no. S092 33147

Built
1938
87 years old, rebuilt 1978
Condition
Good
inspected November 2024
Type
Slab
Concrete Continuous
Length
100 ft
3 main spans
Daily traffic
880
2018 count
Owner
State
State Highway Agency

About this bridge

N92 over Oak Creek is a concrete continuous slab carrying N92 over Oak Creek in Sherman County, Nebraska. It was built in 1938 and reconstructed in 1978, so it is 87 years old, older than the Nebraska average of 47.1 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 880 vehicles a day, roughly 11% of them trucks, projected to reach 1,232 by 2038. The structure is 100 ft (30.5 m) long and 34 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

CarriesN92
CrossesOak Creek
LocationIn Ashton
RouteState Highway 92
Coordinates41.2471, -98.7904
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43 US tons
Inventory rating25.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length100 ft (30.5 m)
Longest span38 ft (11.6 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic880 (2018)
Projected traffic1,232 by 2038
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed12.4 mi (20 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N92 over Oak Creek built?

It was built in 1938, making it 87 years old in 2025. It was reconstructed in 1978.

What condition is N92 over Oak 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 November 2024.

How much traffic does N92 over Oak Creek carry?

About 880 vehicles per day (2018 count), of which roughly 11% are trucks.

How long is N92 over Oak Creek?

The structure is 100 ft (30.5 m) long with a longest span of 38 ft (11.6 m) and a deck 34 ft wide.

Who owns N92 over Oak Creek?

It is owned by the State Highway Agency.