US Bridges

N8 over Rattlesnake Creek

Fair

Richardson County, Nebraska · 11NE Dubois · Structure no. S008 13352

Built
1967
58 years old
Condition
Fair
inspected August 2024
Type
Slab
Concrete Continuous
Length
121 ft
3 main spans
Daily traffic
685
2018 count
Owner
State
State Highway Agency

About this bridge

N8 over Rattlesnake Creek is a concrete continuous slab carrying N8 over Rattlesnake Creek in Richardson County, Nebraska. It was built in 1967, so it is 58 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 5 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 685 vehicles a day, roughly 11% of them trucks, projected to reach 891 by 2038. The structure is 121 ft (36.9 m) long and 33 ft wide. If it were closed, the detour would be 37.3 mi (60 km).

Location

Open in Google Maps
CarriesN8
CrossesRattlesnake Creek
Location11NE Dubois
RouteState Highway 8
CountyRichardson County
StateNebraska
Coordinates40.0587, -95.8605
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: 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 rating45.2 US tons
Inventory rating26.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length121 ft (36.9 m)
Longest span49 ft (14.9 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic685 (2018)
Projected traffic891 by 2038
Trucks11%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N8 over Rattlesnake Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is N8 over Rattlesnake 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 August 2024.

How much traffic does N8 over Rattlesnake Creek carry?

About 685 vehicles per day (2018 count), of which roughly 11% are trucks.

How long is N8 over Rattlesnake Creek?

The structure is 121 ft (36.9 m) long with a longest span of 49 ft (14.9 m) and a deck 33 ft wide.

Who owns N8 over Rattlesnake Creek?

It is owned by the State Highway Agency.