US Bridges

N23 over North Plum Creek

Fair

Frontier County, Nebraska · 7W Eustis · Structure no. S023 11464

Built
1934
91 years old, rebuilt 1961
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
105 ft
3 main spans
Daily traffic
795
2018 count
Owner
State
State Highway Agency

About this bridge

N23 over North Plum Creek is a steel continuous stringer/multi-beam or girder carrying N23 over North Plum Creek in Frontier County, Nebraska. It was built in 1934 and reconstructed in 1961, so it is 91 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 795 vehicles a day, roughly 16% of them trucks, projected to reach 1,034 by 2038. The structure is 105 ft (32 m) long and 33 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

CarriesN23
CrossesNorth Plum Creek
Location7W Eustis
RouteState Highway 23
Coordinates40.6911, -100.1435
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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.9 US tons
Inventory rating30.9 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length105 ft (32 m)
Longest span41 ft (12.5 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic795 (2018)
Projected traffic1,034 by 2038
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed12.4 mi (20 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 N23 over North Plum Creek built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1961.

What condition is N23 over North Plum 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 April 2024.

How much traffic does N23 over North Plum Creek carry?

About 795 vehicles per day (2018 count), of which roughly 16% are trucks.

How long is N23 over North Plum Creek?

The structure is 105 ft (32 m) long with a longest span of 41 ft (12.5 m) and a deck 33 ft wide.

Who owns N23 over North Plum Creek?

It is owned by the State Highway Agency.