US Bridges

FM over Field Stream

Fair

Carroll County, Iowa · 082341304 · Structure no. 000000000093320

Built
1951
74 years old, rebuilt 1986
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
35 ft
2 main spans
Daily traffic
45
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Field Stream is a wood or timber stringer/multi-beam or girder carrying FM over Field Stream in Carroll County, Iowa. It was built in 1951 and reconstructed in 1986, so it is 74 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 45 vehicles a day, projected to reach 45 by 2044. The structure is 35 ft (10.7 m) long and 21 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesFM
CrossesField Stream
Location082341304
RouteCounty Highway 0
StateIowa
Coordinates41.91062, -94.76451
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.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.4 US tons
Inventory rating26.6 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadUnknown
Structure length35 ft (10.7 m)
Longest span17 ft (5.2 m)
Deck width21 ft (6.4 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2022)
Projected traffic45 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Field Stream built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 1986.

What condition is FM over Field 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 March 2024.

How much traffic does FM over Field Stream carry?

About 45 vehicles per day (2022 count).

How long is FM over Field Stream?

The structure is 35 ft (10.7 m) long with a longest span of 17 ft (5.2 m) and a deck 21 ft wide.

Who owns FM over Field Stream?

It is owned by the County Highway Agency.