US Bridges

FM over Perry Creek

Fair

Plymouth County, Iowa · 090470901 · Structure no. 000000000271840

Built
1940
85 years old, rebuilt 1960
Condition
Fair
inspected June 2024
Type
Culvert
Concrete
Length
32 ft
3 main spans
Daily traffic
159
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Perry Creek is a concrete culvert carrying FM over Perry Creek in Plymouth County, Iowa. It was built in 1940 and reconstructed in 1960, so it is 85 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 159 vehicles a day, roughly 45% of them trucks, projected to reach 159 by 2044. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 6.2 mi (10 km).

CarriesFM
CrossesPerry Creek
Location090470901
RouteCounty Highway 0
StateIowa
Coordinates42.63435, -96.39134
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.9 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length32 ft (9.8 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic159 (2022)
Projected traffic159 by 2044
Trucks45%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
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 Perry Creek built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1960.

What condition is FM over Perry 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 June 2024.

How much traffic does FM over Perry Creek carry?

About 159 vehicles per day (2022 count), of which roughly 45% are trucks.

How long is FM over Perry Creek?

The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m).

Who owns FM over Perry Creek?

It is owned by the County Highway Agency.