FM over Brush Creek

Good

Marshall County, Iowa · 082173401 · Structure no. 000000000241791

Built: 2002; 23 years old
Condition: Good; inspected October 2022
Type: Slab; Concrete Continuous
Length: 103 ft; 3 main spans
Daily traffic: 442; 2022 count
Owner: County; County Highway Agency

About this bridge

FM over Brush Creek is a concrete continuous slab carrying FM over Brush Creek in Marshall County, Iowa. It was built in 2002, so it is 23 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 442 vehicles a day, roughly 12% of them trucks, projected to reach 442 by 2042. The structure is 103 ft (31.4 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesFM

CrossesBrush Creek

Location082173401

RouteCounty Highway 0

CountyMarshall County

StateIowa

Coordinates41.87705, -92.81478

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.

Component	Rating	Meaning
Deck	7 Good	Some minor problems.
Superstructure	7 Good	Some minor problems.
Substructure	7 Good	Some minor problems.
Channel and channel protection	7 Good	Some minor problems.

Last inspectionOctober 2022

Inspection intervalevery 48 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation7: Better than present minimum criteria

Deck geometry6: Equal to present minimum criteria

Waterway adequacy9: Superior to present desirable criteria

Approach roadway alignment7: Better than present minimum criteria

Operating rating88.6 US tons

Inventory rating53.1 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans3 (+2 approach)

Design loadHS 20

Structure length103 ft (31.4 m)

Longest span39 ft (11.9 m)

Deck width33 ft (10.1 m)

Roadway width31 ft (9.3 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic442 (2022)

Projected traffic442 by 2042

Trucks12%

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 statusPossibly eligible for the National Register; requires further investigation

Work proposedOther structural work, including hydraulic replacements

Estimated improvement cost—

NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Brush Creek built?

It was built in 2002, making it 23 years old in 2025.

What condition is FM over Brush 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 October 2022.

How much traffic does FM over Brush Creek carry?

About 442 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is FM over Brush Creek?

The structure is 103 ft (31.4 m) long with a longest span of 39 ft (11.9 m) and a deck 33 ft wide.

Who owns FM over Brush Creek?

It is owned by the County Highway Agency.