US Bridges

FM over Field Stream

Fair

Carroll County, Iowa · 084361302 · Structure no. 000000000095770

Built
1900
125 years old, rebuilt 1988
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
38 ft
1 main span
Daily traffic
71
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Field Stream is a steel stringer/multi-beam or girder carrying FM over Field Stream in Carroll County, Iowa. It was built in 1900 and reconstructed in 1988, so it is 125 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 71 vehicles a day, projected to reach 71 by 2043. The structure is 38 ft (11.6 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesFM
CrossesField Stream
Location084361302
RouteCounty Highway 0
CountyCarroll County
StateIowa
Coordinates42.09059, -94.99497
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
Deck7 GoodSome minor problems.
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 inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating23.7 US tons
Inventory rating17.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length38 ft (11.6 m)
Longest span37 ft (11.3 m)
Deck width25 ft (7.7 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic71 (2022)
Projected traffic71 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Field Stream built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1988.

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 August 2023.

How much traffic does FM over Field Stream carry?

About 71 vehicles per day (2022 count).

How long is FM over Field Stream?

The structure is 38 ft (11.6 m) long with a longest span of 37 ft (11.3 m) and a deck 25 ft wide.

Who owns FM over Field Stream?

It is owned by the County Highway Agency.