US Bridges

IRR/N9 over Middle Creek Trib

Fair

Thurston County, Nebraska · JCT N9/S-87A 2N · Structure no. S009 02448

Built
1935
90 years old, rebuilt 2024
Condition
Fair
inspected September 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
1,465
2018 count
Owner
State
State Highway Agency

About this bridge

IRR/N9 over Middle Creek Trib is a concrete culvert carrying IRR/N9 over Middle Creek Trib in Thurston County, Nebraska. It was built in 1935 and reconstructed in 2024, so it is 90 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 1,465 vehicles a day, roughly 14% of them trucks, projected to reach 2,124 by 2038. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 18.6 mi (30 km).

Location

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CarriesIRR/N9
CrossesMiddle Creek Trib
LocationJCT N9/S-87A 2N
RouteState Highway 9
CountyThurston County
StateNebraska
Coordinates42.207, -96.726
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.4 US tons
Inventory rating24.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,465 (2018)
Projected traffic2,124 by 2038
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18.6 mi (30 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 IRR/N9 over Middle Creek Trib built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 2024.

What condition is IRR/N9 over Middle Creek Trib 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 September 2024.

How much traffic does IRR/N9 over Middle Creek Trib carry?

About 1,465 vehicles per day (2018 count), of which roughly 14% are trucks.

How long is IRR/N9 over Middle Creek Trib?

The structure is 22 ft (6.7 m) long with a longest span of 8 ft (2.4 m).

Who owns IRR/N9 over Middle Creek Trib?

It is owned by the State Highway Agency.