US Bridges

N71 over White River

Fair

Dawes County, Nebraska · 1N Crawford · Structure no. S071 13773

Built
1959
66 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete Continuous
Length
152 ft
3 main spans
Daily traffic
345
2018 count
Owner
State
State Highway Agency

About this bridge

N71 over White River is a concrete continuous slab carrying N71 over White River in Dawes County, Nebraska. It was built in 1959, so it is 66 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 345 vehicles a day, roughly 13% of them trucks, projected to reach 466 by 2038. The structure is 152 ft (46.3 m) long and 33 ft wide. If it were closed, the detour would be 37.3 mi (60 km).

CarriesN71
CrossesWhite River
Location1N Crawford
RouteState Highway 71
Coordinates42.7045, -103.4037
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
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 geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.8 US tons
Inventory rating30.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length152 ft (46.3 m)
Longest span65 ft (19.8 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic345 (2018)
Projected traffic466 by 2038
Trucks13%
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 N71 over White River built?

It was built in 1959, making it 66 years old in 2025.

What condition is N71 over White 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 May 2024.

How much traffic does N71 over White River carry?

About 345 vehicles per day (2018 count), of which roughly 13% are trucks.

How long is N71 over White River?

The structure is 152 ft (46.3 m) long with a longest span of 65 ft (19.8 m) and a deck 33 ft wide.

Who owns N71 over White River?

It is owned by the State Highway Agency.