US Bridges

FM over Caleb Creek

Fair

Decatur County, Iowa · 067241404 · Structure no. 000000000136071

Built
1977
48 years old, rebuilt 2021
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
142 ft
3 main spans
Daily traffic
379
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Caleb Creek is a prestressed concrete stringer/multi-beam or girder carrying FM over Caleb Creek in Decatur County, Iowa. It was built in 1977 and reconstructed in 2021, so it is 48 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 379 vehicles a day, roughly 17% of them trucks, projected to reach 379 by 2043. The structure is 142 ft (43.3 m) long and 32 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesFM
CrossesCaleb Creek
Location067241404
RouteCounty Highway 0
StateIowa
Coordinates40.60565, -93.57872
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.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating81.4 US tons
Inventory rating40.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length142 ft (43.3 m)
Longest span52 ft (15.9 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic379 (2022)
Projected traffic379 by 2043
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Caleb Creek built?

It was built in 1977, making it 48 years old in 2025. It was reconstructed in 2021.

What condition is FM over Caleb Creek 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 November 2023.

How much traffic does FM over Caleb Creek carry?

About 379 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is FM over Caleb Creek?

The structure is 142 ft (43.3 m) long with a longest span of 52 ft (15.9 m) and a deck 32 ft wide.

Who owns FM over Caleb Creek?

It is owned by the County Highway Agency.