US Bridges

Local over Stream

Fair

Lyon County, Iowa · 099463202 · Structure no. 000000000230301

Built
1981
44 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
46
2022 count
Owner
County
County Highway Agency

About this bridge

Local over Stream is a concrete continuous culvert carrying Local over Stream in Lyon County, Iowa. It was built in 1981, so it is 44 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 46 vehicles a day, projected to reach 46 by 2043. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesLocal
CrossesStream
Location099463202
RouteCounty Highway 0
CountyLyon County
StateIowa
Coordinates43.35195, -96.31352
Functional classRural Local

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 alignment8: Equal to present desirable criteria
Operating rating58.4 US tons
Inventory rating34.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 20
Structure length22 ft (6.7 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 traffic46 (2022)
Projected traffic46 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Local over Stream built?

It was built in 1981, making it 44 years old in 2025.

What condition is Local over Stream 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 Local over Stream carry?

About 46 vehicles per day (2022 count).

How long is Local over Stream?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns Local over Stream?

It is owned by the County Highway Agency.