US Bridges

N89 over Flag Creek

Good

Harlan County, Nebraska · 1S Orleans · Structure no. S089 06328

Built
2022
3 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
88 ft
1 main span
Daily traffic
135
2018 count
Owner
State
State Highway Agency

About this bridge

N89 over Flag Creek is a prestressed concrete stringer/multi-beam or girder carrying N89 over Flag Creek in Harlan County, Nebraska. It was built in 2022, so it is 3 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 135 vehicles a day, roughly 11% of them trucks, projected to reach 176 by 2038. The structure is 88 ft (26.8 m) long and 35 ft wide. If it were closed, the detour would be 87 mi (140 km).

Location

Open in Google Maps
CarriesN89
CrossesFlag Creek
Location1S Orleans
RouteState Highway 89
CountyHarlan County
StateNebraska
Coordinates40.11664, -99.45294
Functional classRural Major Collector

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.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.1 US tons
Inventory rating50.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length88 ft (26.8 m)
Longest span85 ft (25.9 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic135 (2018)
Projected traffic176 by 2038
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed87 mi (140 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 N89 over Flag Creek built?

It was built in 2022, making it 3 years old in 2025.

What condition is N89 over Flag Creek 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 April 2023.

How much traffic does N89 over Flag Creek carry?

About 135 vehicles per day (2018 count), of which roughly 11% are trucks.

How long is N89 over Flag Creek?

The structure is 88 ft (26.8 m) long with a longest span of 85 ft (25.9 m) and a deck 35 ft wide.

Who owns N89 over Flag Creek?

It is owned by the State Highway Agency.