US Bridges

FM over South Chariton River

Good

Wayne County, Iowa · 069201006 · Structure no. 000000000339660

Built
1969
56 years old, rebuilt 2020
Condition
Good
inspected October 2022
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
282 ft
4 main spans
Daily traffic
310
2022 count
Owner
County
County Highway Agency

About this bridge

FM over South Chariton River is a steel continuous stringer/multi-beam or girder carrying FM over South Chariton River in Wayne County, Iowa. It was built in 1969 and reconstructed in 2020, so it is 56 years old, older 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 310 vehicles a day, roughly 27% of them trucks, projected to reach 310 by 2043. The structure is 282 ft (86 m) long and 33 ft wide. If it were closed, the detour would be 18 mi (29 km).

CarriesFM
CrossesSouth Chariton River
Location069201006
RouteCounty Highway 0
StateIowa
Coordinates40.78518, -93.1417
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2022
Inspection intervalevery 24 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 adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating56.4 US tons
Inventory rating33.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length282 ft (86 m)
Longest span78 ft (23.8 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic310 (2022)
Projected traffic310 by 2043
Trucks27%
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 South Chariton River built?

It was built in 1969, making it 56 years old in 2025. It was reconstructed in 2020.

What condition is FM over South Chariton River 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 South Chariton River carry?

About 310 vehicles per day (2022 count), of which roughly 27% are trucks.

How long is FM over South Chariton River?

The structure is 282 ft (86 m) long with a longest span of 78 ft (23.8 m) and a deck 33 ft wide.

Who owns FM over South Chariton River?

It is owned by the County Highway Agency.