US Bridges

FM over Small Creek

Poor

Guthrie County, Iowa · 080322303 · Structure no. 000000000169300

Built
1965
60 years old
Condition
Poor
inspected November 2023
Type
Culvert
Concrete Continuous
Length
34 ft
3 main spans
Daily traffic
417
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Small Creek is a concrete continuous culvert carrying FM over Small Creek in Guthrie County, Iowa. It was built in 1965, so it is 60 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 417 vehicles a day, roughly 24% of them trucks, projected to reach 417 by 2043. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 6.2 mi (10 km).

CarriesFM
CrossesSmall Creek
Location080322303
RouteCounty Highway 0
StateIowa
Coordinates41.73164, -94.53591
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionNovember 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
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating41.7 US tons
Inventory rating25 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 20
Structure length34 ft (10.4 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic417 (2022)
Projected traffic417 by 2043
Trucks24%
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$705,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Small Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is FM over Small Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2023.

How much traffic does FM over Small Creek carry?

About 417 vehicles per day (2022 count), of which roughly 24% are trucks.

How long is FM over Small Creek?

The structure is 34 ft (10.4 m) long with a longest span of 11 ft (3.4 m).

Who owns FM over Small Creek?

It is owned by the County Highway Agency.