US Bridges

US183 over Niobrara River

Good

Keya Paha County, Nebraska · 6S Springview · Structure no. S183 20723

Built
2001
24 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
458 ft
3 main spans
Daily traffic
545
2018 count
Owner
State
State Highway Agency

About this bridge

US183 over Niobrara River is a steel continuous stringer/multi-beam or girder carrying US183 over Niobrara River in Keya Paha County, Nebraska. It was built in 2001, so it is 24 years old, younger 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 545 vehicles a day, roughly 19% of them trucks, projected to reach 818 by 2038. The structure is 458 ft (139.6 m) long and 38 ft wide. If it were closed, the detour would be 211.3 mi (340 km).

CarriesUS183
CrossesNiobrara River
Location6S Springview
RouteU.S. Route 183
Coordinates42.7354, -99.7439
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.9 US tons
Inventory rating33.1 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length458 ft (139.6 m)
Longest span153 ft (46.6 m)
Deck width38 ft (11.5 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic545 (2018)
Projected traffic818 by 2038
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed211.3 mi (340 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 US183 over Niobrara River built?

It was built in 2001, making it 24 years old in 2025.

What condition is US183 over Niobrara River 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 March 2023.

How much traffic does US183 over Niobrara River carry?

About 545 vehicles per day (2018 count), of which roughly 19% are trucks.

How long is US183 over Niobrara River?

The structure is 458 ft (139.6 m) long with a longest span of 153 ft (46.6 m) and a deck 38 ft wide.

Who owns US183 over Niobrara River?

It is owned by the State Highway Agency.