US Bridges

N84 over Dead Creek

Good

Cedar County, Nebraska · 3E Hartington · Structure no. S084 04644

Built
1997
28 years old
Condition
Good
inspected September 2024
Type
Slab
Concrete Continuous
Length
83 ft
3 main spans
Daily traffic
1,035
2018 count
Owner
State
State Highway Agency

About this bridge

N84 over Dead Creek is a concrete continuous slab carrying N84 over Dead Creek in Cedar County, Nebraska. It was built in 1997, so it is 28 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 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 1,035 vehicles a day, roughly 9% of them trucks, projected to reach 1,397 by 2038. The structure is 83 ft (25.3 m) long and 38 ft wide. If it were closed, the detour would be 37.3 mi (60 km).

CarriesN84
CrossesDead Creek
Location3E Hartington
RouteState Highway 84
Coordinates42.6123, -97.1982
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating80.5 US tons
Inventory rating48.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length83 ft (25.3 m)
Longest span32 ft (9.8 m)
Deck width38 ft (11.7 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,035 (2018)
Projected traffic1,397 by 2038
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed37.3 mi (60 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 N84 over Dead Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is N84 over Dead 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 September 2024.

How much traffic does N84 over Dead Creek carry?

About 1,035 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is N84 over Dead Creek?

The structure is 83 ft (25.3 m) long with a longest span of 32 ft (9.8 m) and a deck 38 ft wide.

Who owns N84 over Dead Creek?

It is owned by the State Highway Agency.