US Bridges

County Road 789th over Oak Creek

FairPosted for load

Sherman County, Nebraska · Ashton · Structure no. M011022220

Built
2012
13 years old
Condition
Fair
inspected November 2024
Type
Tee Beam
Prestressed Concrete
Length
67 ft
1 main span
Daily traffic
85
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

County Road 789th over Oak Creek is a prestressed concrete tee beam carrying County Road 789th over Oak Creek in Sherman County, Nebraska. It was built in 2012, so it is 13 years old, younger 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. Its operating status is: posted for load restriction.

It carries about 85 vehicles a day, projected to reach 93 by 2042. The structure is 67 ft (20.4 m) long and 31 ft wide. If it were closed, the detour would be 99.4 mi (160 km).

Location

Open in Google Maps
CarriesCounty Road 789th
CrossesOak Creek
LocationAshton
RouteCity Street 2065
CountySherman County
StateNebraska
Coordinates41.25, -98.7917
Functional classRural Major Collector

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.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.9 US tons
Inventory rating32 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length67 ft (20.4 m)
Longest span65 ft (19.8 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic85 (2022)
Projected traffic93 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed99.4 mi (160 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 789th over Oak Creek built?

It was built in 2012, making it 13 years old in 2025.

What condition is County Road 789th over Oak 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 November 2024.

How much traffic does County Road 789th over Oak Creek carry?

About 85 vehicles per day (2022 count).

How long is County Road 789th over Oak Creek?

The structure is 67 ft (20.4 m) long with a longest span of 65 ft (19.8 m) and a deck 31 ft wide.

Who owns County Road 789th over Oak Creek?

It is owned by the City or Municipal Highway Agency.