FM over Small Stream

Fair

Lee County, Iowa · 066061401 · Structure no. 000000000218160

Built: 1950; 75 years old, rebuilt 1979
Condition: Fair; inspected February 2023
Type: Culvert; Concrete Continuous
Length: 23 ft; 2 main spans
Daily traffic: 650; 2022 count
Owner: County; County Highway Agency

About this bridge

FM over Small Stream is a concrete continuous culvert carrying FM over Small Stream in Lee County, Iowa. It was built in 1950 and reconstructed in 1979, so it is 75 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 650 vehicles a day, roughly 14% of them trucks, projected to reach 650 by 2043. The structure is 23 ft (7 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesFM

CrossesSmall Stream

Location066061401

RouteCounty Highway 0

CountyLee County

StateIowa

Coordinates40.52427, -91.52235

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.

Component	Rating	Meaning
Channel and channel protection	7 Good	Some minor problems.
Culvert	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.

Last inspectionFebruary 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

Waterway adequacy4: Meets minimum tolerable limits to be left in place as is

Approach roadway alignment8: Equal to present desirable criteria

Operating rating36 US tons

Inventory rating27 US tons

Structure

Structure typeCulvert

MaterialConcrete Continuous

DeckNot applicable

Main spans2

Design loadUnknown

Structure length23 ft (7 m)

Longest span10 ft (3 m)

Deck width0 ft (0 m)

Roadway width0 ft (0 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic650 (2022)

Projected traffic650 by 2043

Trucks14%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed1.2 mi (2 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 over Small Stream built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1979.

What condition is FM over Small Stream 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 February 2023.

How much traffic does FM over Small Stream carry?

About 650 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is FM over Small Stream?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m).

Who owns FM over Small Stream?

It is owned by the County Highway Agency.