US Bridges

Road 321 over School Creek Trib

Good

Clay County, Nebraska · _ · Structure no. C001801014

Built
2019
6 years old
Condition
Good
inspected November 2023
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
25
2003 count
Owner
County
County Highway Agency

About this bridge

Road 321 over School Creek Trib is a concrete culvert carrying Road 321 over School Creek Trib in Clay County, Nebraska. It was built in 2019, so it is 6 years old, younger 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 25 vehicles a day, projected to reach 42 by 2041. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 31.1 mi (50 km).

Location

Open in Google Maps
CarriesRoad 321
CrossesSchool Creek Trib
Location_
RouteCounty Highway 10
CountyClay County
StateNebraska
Coordinates40.6405, -97.8935
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 protection8 Very GoodNo problems noted.
Culvert9 ExcellentNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating67.2 US tons
Inventory rating49.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deck0 ft (0 m)

Traffic and service

Average daily traffic25 (2003)
Projected traffic42 by 2041
Trucks0%
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

OwnerCounty Highway Agency
Maintained byCounty 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 Road 321 over School Creek Trib built?

It was built in 2019, making it 6 years old in 2025.

What condition is Road 321 over School Creek Trib 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 2023.

How much traffic does Road 321 over School Creek Trib carry?

About 25 vehicles per day (2003 count).

How long is Road 321 over School Creek Trib?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m).

Who owns Road 321 over School Creek Trib?

It is owned by the County Highway Agency.