US Bridges

N8 over Republican River Trib

Fair

Nuckolls County, Nebraska · 3E Superior · Structure no. S008 00326

Built
1941
84 years old, rebuilt 2000
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
1,035
2018 count
Owner
State
State Highway Agency

About this bridge

N8 over Republican River Trib is a concrete culvert carrying N8 over Republican River Trib in Nuckolls County, Nebraska. It was built in 1941 and reconstructed in 2000, so it is 84 years old, older 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,035 vehicles a day, roughly 12% of them trucks, projected to reach 1,346 by 2038. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 37.3 mi (60 km).

Location

Open in Google Maps
CarriesN8
CrossesRepublican River Trib
Location3E Superior
RouteState Highway 8
CountyNuckolls County
StateNebraska
Coordinates40.0173, -98.0044
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.4 US tons
Inventory rating24.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,035 (2018)
Projected traffic1,346 by 2038
Trucks12%
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 N8 over Republican River Trib built?

It was built in 1941, making it 84 years old in 2025. It was reconstructed in 2000.

What condition is N8 over Republican River Trib 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 July 2023.

How much traffic does N8 over Republican River Trib carry?

About 1,035 vehicles per day (2018 count), of which roughly 12% are trucks.

How long is N8 over Republican River Trib?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns N8 over Republican River Trib?

It is owned by the State Highway Agency.