US Bridges

N8 over Crosby Creek

Good

Nuckolls County, Nebraska · 4E Superior · Structure no. S008 00442

Built
1941
84 years old, rebuilt 2000
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
85 ft
1 main span
Daily traffic
1,035
2018 count
Owner
State
State Highway Agency

About this bridge

N8 over Crosby Creek is a prestressed concrete stringer/multi-beam or girder carrying N8 over Crosby Creek 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 good condition with a lowest component rating of 8 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 12% of them trucks, projected to reach 1,346 by 2038. The structure is 85 ft (25.9 m) long and 42 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

CarriesN8
CrossesCrosby Creek
Location4E Superior
RouteState Highway 8
Coordinates40.0173, -97.9828
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length85 ft (25.9 m)
Longest span82 ft (25 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 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 closed12.4 mi (20 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 Crosby Creek built?

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

What condition is N8 over Crosby 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 July 2023.

How much traffic does N8 over Crosby Creek carry?

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

How long is N8 over Crosby Creek?

The structure is 85 ft (25.9 m) long with a longest span of 82 ft (25 m) and a deck 42 ft wide.

Who owns N8 over Crosby Creek?

It is owned by the State Highway Agency.