US Bridges

FM over Dry Run

Good

Osceola County, Iowa · 100422902 · Structure no. 000000000263935

Built
1942
83 years old, rebuilt 1971
Condition
Good
inspected November 2024
Type
Culvert
Concrete Continuous
Length
27 ft
3 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Dry Run is a concrete continuous culvert carrying FM over Dry Run in Osceola County, Iowa. It was built in 1942 and reconstructed in 1971, so it is 83 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, projected to reach 100 by 2044. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFM
CrossesDry Run
Location100422902
RouteCounty Highway 0
StateIowa
Coordinates43.45738, -95.84118
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.6 US tons
Inventory rating22.2 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 20
Structure length27 ft (8.2 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic100 by 2044
Trucks0%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Dry Run built?

It was built in 1942, making it 83 years old in 2025. It was reconstructed in 1971.

What condition is FM over Dry Run in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2024.

How much traffic does FM over Dry Run carry?

About 100 vehicles per day (2022 count).

How long is FM over Dry Run?

The structure is 27 ft (8.2 m) long with a longest span of 8 ft (2.4 m).

Who owns FM over Dry Run?

It is owned by the County Highway Agency.