US Bridges

FM over Small Stream

Good

Washington County, Iowa · 076092101 · Structure no. 000000000337301

Built
2009
16 years old
Condition
Good
inspected March 2022
Type
Culvert
Concrete Continuous
Length
34 ft
3 main spans
Daily traffic
640
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 Washington County, Iowa. It was built in 2009, so it is 16 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 640 vehicles a day, roughly 16% of them trucks, projected to reach 640 by 2043. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 18 mi (29 km).

CarriesFM
CrossesSmall Stream
Location076092101
RouteCounty Highway 0
StateIowa
Coordinates41.38111, -91.90718
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.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionMarch 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length34 ft (10.4 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 traffic640 (2022)
Projected traffic640 by 2043
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Small Stream built?

It was built in 2009, making it 16 years old in 2025.

What condition is FM over Small Stream 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 March 2022.

How much traffic does FM over Small Stream carry?

About 640 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is FM over Small Stream?

The structure is 34 ft (10.4 m) long with a longest span of 11 ft (3.4 m).

Who owns FM over Small Stream?

It is owned by the County Highway Agency.