US Bridges

FM 250th ST over Br Buffalo Ck

Fair

Johnson County, Iowa · 080070903 · Structure no. 000000000205000

Built
1978
47 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
920
2021 count
Owner
County
County Highway Agency

About this bridge

FM 250th ST over Br Buffalo Ck is a concrete continuous culvert carrying FM 250th ST over Br Buffalo Ck in Johnson County, Iowa. It was built in 1978, so it is 47 years old, older 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 920 vehicles a day, roughly 10% of them trucks, projected to reach 920 by 2043. The structure is 23 ft (7 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesFM 250th ST
CrossesBr Buffalo Ck
Location080070903
RouteCounty Highway 0
CountyJohnson County
StateIowa
Coordinates41.75274, -91.66573
Functional classRural Major Collector

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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 length23 ft (7 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic920 (2021)
Projected traffic920 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 250th ST over Br Buffalo Ck built?

It was built in 1978, making it 47 years old in 2025.

What condition is FM 250th ST over Br Buffalo Ck 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 FM 250th ST over Br Buffalo Ck carry?

About 920 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is FM 250th ST over Br Buffalo Ck?

The structure is 23 ft (7 m) long with a longest span of 11 ft (3.4 m).

Who owns FM 250th ST over Br Buffalo Ck?

It is owned by the County Highway Agency.