US Bridges

FM over Small Creek

Fair

Marshall County, Iowa · 084192101 · Structure no. 000000000243641

Built
1985
40 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete Continuous
Length
38 ft
2 main spans
Daily traffic
746
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 Marshall County, Iowa. It was built in 1985, so it is 40 years old, younger 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 746 vehicles a day, projected to reach 746 by 2043. The structure is 38 ft (11.5 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesFM
CrossesSmall Creek
Location084192101
RouteCounty Highway 0
StateIowa
Coordinates42.07881, -93.06406
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 48 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length38 ft (11.5 m)
Longest span18 ft (5.5 m)
Deck width34 ft (10.4 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic746 (2022)
Projected traffic746 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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$30,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Small Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is FM over Small 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 Small Creek carry?

About 746 vehicles per day (2022 count).

How long is FM over Small Creek?

The structure is 38 ft (11.5 m) long with a longest span of 18 ft (5.5 m) and a deck 34 ft wide.

Who owns FM over Small Creek?

It is owned by the County Highway Agency.