County Road 446 over Buffalo Creek

Good

Dawson County, Nebraska · 1.5SE Overton · Structure no. C002407705

Built: 2024; 1 years old
Condition: Good; inspected October 2023
Type: Culvert; Concrete
Length: 50 ft; 2 main spans
Daily traffic: 30; 2003 count
Owner: County; County Highway Agency

About this bridge

County Road 446 over Buffalo Creek is a concrete culvert carrying County Road 446 over Buffalo Creek in Dawson County, Nebraska. It was built in 2024, so it is 1 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 30 vehicles a day, projected to reach 51 by 2033. The structure is 50 ft (15.2 m) long. If it were closed, the detour would be 18.6 mi (30 km).

Location

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CarriesCounty Road 446

CrossesBuffalo Creek

Location1.5SE Overton

RouteCounty Highway 77

CountyDawson County

StateNebraska

Coordinates40.7324, -99.5028

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.

Component	Rating	Meaning
Channel and channel protection	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert	9 Excellent	No problems noted.

Last inspectionOctober 2023

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation9: Superior to present desirable criteria

Waterway adequacy9: Superior to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating50.7 US tons

Inventory rating38.6 US tons

Structure

Structure typeCulvert

MaterialConcrete

DeckNot applicable

Main spans2

Design loadHL 93

Structure length50 ft (15.2 m)

Longest span24 ft (7.4 m)

Deck width0 ft (0 m)

Roadway width0 ft (0 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2003)

Projected traffic51 by 2033

Trucks0%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed18.6 mi (30 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 County Road 446 over Buffalo Creek built?

It was built in 2024, making it 1 years old in 2025.

What condition is County Road 446 over Buffalo 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 October 2023.

How much traffic does County Road 446 over Buffalo Creek carry?

About 30 vehicles per day (2003 count).

How long is County Road 446 over Buffalo Creek?

The structure is 50 ft (15.2 m) long with a longest span of 24 ft (7.4 m).

Who owns County Road 446 over Buffalo Creek?

It is owned by the County Highway Agency.