US Bridges

FM over Polly Creek

Fair

Osceola County, Iowa · 099410604 · Structure no. 000000000263240

Built
1955
70 years old, rebuilt 1972
Condition
Fair
inspected November 2024
Type
Culvert
Concrete Continuous
Length
40 ft
3 main spans
Daily traffic
718
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Polly Creek is a concrete continuous culvert carrying FM over Polly Creek in Osceola County, Iowa. It was built in 1955 and reconstructed in 1972, so it is 70 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 718 vehicles a day, roughly 8% of them trucks, projected to reach 718 by 2044. The structure is 40 ft (12.2 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFM
CrossesPolly Creek
Location099410604
RouteCounty Highway 0
StateIowa
Coordinates43.42419, -95.74169
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.6 US tons
Inventory rating35.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 20
Structure length40 ft (12.2 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic718 (2022)
Projected traffic718 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Polly Creek built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1972.

What condition is FM over Polly 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 2024.

How much traffic does FM over Polly Creek carry?

About 718 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is FM over Polly Creek?

The structure is 40 ft (12.2 m) long with a longest span of 12 ft (3.7 m).

Who owns FM over Polly Creek?

It is owned by the County Highway Agency.