US Bridges

N11 over Prairie Creek

Fair

Hall County, Nebraska · 5S Cairo · Structure no. S011 01753

Built
1955
70 years old, rebuilt 1986
Condition
Fair
inspected July 2023
Type
Slab
Concrete Continuous
Length
85 ft
3 main spans
Daily traffic
1,715
2018 count
Owner
State
State Highway Agency

About this bridge

N11 over Prairie Creek is a concrete continuous slab carrying N11 over Prairie Creek in Hall County, Nebraska. It was built in 1955 and reconstructed in 1986, so it is 70 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 1,715 vehicles a day, roughly 9% of them trucks, projected to reach 2,230 by 2038. The structure is 85 ft (25.9 m) long and 35 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

Location

Open in Google Maps
CarriesN11
CrossesPrairie Creek
Location5S Cairo
RouteState Highway 11
CountyHall County
StateNebraska
Coordinates40.9272, -98.6081
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.9 US tons
Inventory rating25.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length85 ft (25.9 m)
Longest span34 ft (10.4 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,715 (2018)
Projected traffic2,230 by 2038
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.1 mi (50 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 N11 over Prairie Creek built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1986.

What condition is N11 over Prairie 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 July 2023.

How much traffic does N11 over Prairie Creek carry?

About 1,715 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is N11 over Prairie Creek?

The structure is 85 ft (25.9 m) long with a longest span of 34 ft (10.4 m) and a deck 35 ft wide.

Who owns N11 over Prairie Creek?

It is owned by the State Highway Agency.