US Bridges

FM over Dry Run Creek

Fair

Lyon County, Iowa · 099440702 · Structure no. 000000000229830

Built
1958
67 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete Continuous
Length
24 ft
3 main spans
Daily traffic
270
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Dry Run Creek is a concrete continuous culvert carrying FM over Dry Run Creek in Lyon County, Iowa. It was built in 1958, so it is 67 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 270 vehicles a day, roughly 29% of them trucks, projected to reach 270 by 2043. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFM
CrossesDry Run Creek
Location099440702
RouteCounty Highway 0
StateIowa
Coordinates43.41383, -96.09629
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadUnknown
Structure length24 ft (7.3 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 traffic270 (2022)
Projected traffic270 by 2043
Trucks29%
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Dry Run Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is FM over Dry Run 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 July 2023.

How much traffic does FM over Dry Run Creek carry?

About 270 vehicles per day (2022 count), of which roughly 29% are trucks.

How long is FM over Dry Run Creek?

The structure is 24 ft (7.3 m) long with a longest span of 8 ft (2.4 m).

Who owns FM over Dry Run Creek?

It is owned by the County Highway Agency.