FM over Brush Creek

Fair

Marion County, Iowa · 077201401 · Structure no. 000000000241340

Built: 1968; 57 years old
Condition: Fair; inspected December 2023
Type: Culvert; Concrete Continuous
Length: 21 ft; 2 main spans
Daily traffic: 120; 2022 count
Owner: County; County Highway Agency

About this bridge

FM over Brush Creek is a concrete continuous culvert carrying FM over Brush Creek in Marion County, Iowa. It was built in 1968, so it is 57 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 5 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 120 vehicles a day, projected to reach 120 by 2043. The structure is 21 ft (6.4 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesFM

CrossesBrush Creek

Location077201401

RouteCounty Highway 0

CountyMarion County

StateIowa

Coordinates41.47993, -93.13331

Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

Component	Rating	Meaning
Channel and channel protection	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.

Last inspectionDecember 2023

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

Deck geometry7: Better than present minimum criteria

Waterway adequacy7: Better than present minimum criteria

Approach roadway alignment7: Better than present minimum criteria

Operating rating59 US tons

Inventory rating35.3 US tons

Structure

Structure typeCulvert

MaterialConcrete Continuous

DeckNot applicable

Main spans2

Design loadH 20

Structure length21 ft (6.4 m)

Longest span10 ft (3 m)

Deck width34 ft (10.4 m)

Roadway width34 ft (10.4 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic120 (2022)

Projected traffic120 by 2043

Trucks0%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed3.7 mi (6 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$200,000 (2023 estimate)

NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Brush Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is FM over Brush 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 December 2023.

How much traffic does FM over Brush Creek carry?

About 120 vehicles per day (2022 count).

How long is FM over Brush Creek?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 34 ft wide.

Who owns FM over Brush Creek?

It is owned by the County Highway Agency.