US Bridges

N91 over Elkhorn River

Fair

Dodge County, Nebraska · 1E Nickerson · Structure no. S091 21367

Built
1996
29 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
604 ft
6 main spans
Daily traffic
1,720
2018 count
Owner
State
State Highway Agency

About this bridge

N91 over Elkhorn River is a prestressed concrete stringer/multi-beam or girder carrying N91 over Elkhorn River in Dodge County, Nebraska. It was built in 1996, so it is 29 years old, younger 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 1,720 vehicles a day, roughly 13% of them trucks, projected to reach 2,322 by 2038. The structure is 604 ft (184.1 m) long and 42 ft wide. If it were closed, the detour would be 149.1 mi (240 km).

CarriesN91
CrossesElkhorn River
Location1E Nickerson
RouteState Highway 91
Coordinates41.5389, -96.4546
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.3 US tons
Inventory rating46.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadUnknown
Structure length604 ft (184.1 m)
Longest span100 ft (30.5 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,720 (2018)
Projected traffic2,322 by 2038
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed149.1 mi (240 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 N91 over Elkhorn River built?

It was built in 1996, making it 29 years old in 2025.

What condition is N91 over Elkhorn 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 January 2024.

How much traffic does N91 over Elkhorn River carry?

About 1,720 vehicles per day (2018 count), of which roughly 13% are trucks.

How long is N91 over Elkhorn River?

The structure is 604 ft (184.1 m) long with a longest span of 100 ft (30.5 m) and a deck 42 ft wide.

Who owns N91 over Elkhorn River?

It is owned by the State Highway Agency.