US Bridges

N9 over South Creek

Good

Dixon County, Nebraska · 1NE Martinsburg · Structure no. S009 05482

Built
2022
3 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
172 ft
1 main span
Daily traffic
660
2018 count
Owner
State
State Highway Agency

About this bridge

N9 over South Creek is a prestressed concrete stringer/multi-beam or girder carrying N9 over South Creek in Dixon 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 660 vehicles a day, roughly 11% of them trucks, projected to reach 858 by 2038. The structure is 172 ft (52.4 m) long and 39 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

CarriesN9
CrossesSouth Creek
Location1NE Martinsburg
RouteState Highway 9
Coordinates42.52258, -96.81435
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
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 rating52.9 US tons
Inventory rating36.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length172 ft (52.4 m)
Longest span170 ft (51.8 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic660 (2018)
Projected traffic858 by 2038
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.1 mi (50 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 N9 over South Creek built?

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

What condition is N9 over South 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 September 2024.

How much traffic does N9 over South Creek carry?

About 660 vehicles per day (2018 count), of which roughly 11% are trucks.

How long is N9 over South Creek?

The structure is 172 ft (52.4 m) long with a longest span of 170 ft (51.8 m) and a deck 39 ft wide.

Who owns N9 over South Creek?

It is owned by the State Highway Agency.