US Bridges

N57 over Butterfly Creek

Fair

Stanton County, Nebraska · 5S Stanton · Structure no. S057 01185

Built
1966
59 years old, rebuilt 1985
Condition
Fair
inspected June 2023
Type
Slab
Concrete Continuous
Length
121 ft
3 main spans
Daily traffic
1,140
2018 count
Owner
State
State Highway Agency

About this bridge

N57 over Butterfly Creek is a concrete continuous slab carrying N57 over Butterfly Creek in Stanton County, Nebraska. It was built in 1966 and reconstructed in 1985, so it is 59 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 1,140 vehicles a day, roughly 10% of them trucks, projected to reach 1,767 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
CarriesN57
CrossesButterfly Creek
Location5S Stanton
RouteState Highway 57
CountyStanton County
StateNebraska
Coordinates41.8859, -97.2139
Functional classRural Major Collector

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43 US tons
Inventory rating26.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadH 15
Structure length121 ft (36.9 m)
Longest span33 ft (10.1 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,140 (2018)
Projected traffic1,767 by 2038
Trucks10%
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 N57 over Butterfly Creek built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 1985.

What condition is N57 over Butterfly 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 June 2023.

How much traffic does N57 over Butterfly Creek carry?

About 1,140 vehicles per day (2018 count), of which roughly 10% are trucks.

How long is N57 over Butterfly Creek?

The structure is 121 ft (36.9 m) long with a longest span of 33 ft (10.1 m) and a deck 33 ft wide.

Who owns N57 over Butterfly Creek?

It is owned by the State Highway Agency.