US Bridges

280th ST NE over Nicholson Creek

Fair

Johnson County, Iowa · 080052401 · Structure no. 000000000204781

Built
1982
43 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete Continuous
Length
27 ft
2 main spans
Daily traffic
122
2021 count
Owner
County
County Highway Agency

About this bridge

280th ST NE over Nicholson Creek is a concrete continuous culvert carrying 280th ST NE over Nicholson Creek in Johnson County, Iowa. It was built in 1982, so it is 43 years old, younger than the Iowa average of 45.5 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 122 vehicles a day, projected to reach 122 by 2043. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

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Carries280th ST NE
CrossesNicholson Creek
Location080052401
RouteCounty Highway 0
CountyJohnson County
StateIowa
Coordinates41.72923, -91.37114
Functional classRural Local

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.5 US tons
Inventory rating39.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHL 93
Structure length27 ft (8.2 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic122 (2021)
Projected traffic122 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 280th ST NE over Nicholson Creek built?

It was built in 1982, making it 43 years old in 2025.

What condition is 280th ST NE over Nicholson 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 2023.

How much traffic does 280th ST NE over Nicholson Creek carry?

About 122 vehicles per day (2021 count).

How long is 280th ST NE over Nicholson Creek?

The structure is 27 ft (8.2 m) long with a longest span of 12 ft (3.7 m).

Who owns 280th ST NE over Nicholson Creek?

It is owned by the County Highway Agency.