US Bridges

N8 over S Fk Big Nemaha River

Fair

Richardson County, Nebraska · Scl Salem · Structure no. S008 14151

Built
1963
62 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
291 ft
3 main spans
Daily traffic
765
2018 count
Owner
State
State Highway Agency

About this bridge

N8 over S Fk Big Nemaha River is a steel continuous stringer/multi-beam or girder carrying N8 over S Fk Big Nemaha River in Richardson County, Nebraska. It was built in 1963, so it is 62 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 765 vehicles a day, roughly 10% of them trucks, projected to reach 1,033 by 2038. The structure is 291 ft (88.7 m) long and 33 ft wide. If it were closed, the detour would be 18.6 mi (30 km).

Location

Open in Google Maps
CarriesN8
CrossesS Fk Big Nemaha River
LocationScl Salem
RouteState Highway 8
CountyRichardson County
StateNebraska
Coordinates40.0626, -95.7182
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating36.4 US tons
Inventory rating22 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length291 ft (88.7 m)
Longest span130 ft (39.6 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic765 (2018)
Projected traffic1,033 by 2038
Trucks10%
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

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 S Fk Big Nemaha River built?

It was built in 1963, making it 62 years old in 2025.

What condition is N8 over S Fk Big Nemaha River 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 S Fk Big Nemaha River carry?

About 765 vehicles per day (2018 count), of which roughly 10% are trucks.

How long is N8 over S Fk Big Nemaha River?

The structure is 291 ft (88.7 m) long with a longest span of 130 ft (39.6 m) and a deck 33 ft wide.

Who owns N8 over S Fk Big Nemaha River?

It is owned by the State Highway Agency.