US Bridges

Local RD over Small Natural Stream

Fair

Henry County, Iowa · 073052102 · Structure no. 000000000028620

Built
1931
94 years old, rebuilt 1952
Condition
Fair
inspected February 2023
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
600
2022 count
Owner
County
County Highway Agency

About this bridge

Local RD over Small Natural Stream is a concrete continuous culvert carrying Local RD over Small Natural Stream in Henry County, Iowa. It was built in 1931 and reconstructed in 1952, so it is 94 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 600 vehicles a day, projected to reach 600 by 2043. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLocal RD
CrossesSmall Natural Stream
Location073052102
RouteCity Street 0
CountyHenry County
StateIowa
Coordinates41.11883, -91.43789
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 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 spans2
Design loadH 20
Structure length21 ft (6.4 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 traffic600 (2022)
Projected traffic600 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Local RD over Small Natural Stream built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1952.

What condition is Local RD over Small Natural 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 February 2023.

How much traffic does Local RD over Small Natural Stream carry?

About 600 vehicles per day (2022 count).

How long is Local RD over Small Natural Stream?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns Local RD over Small Natural Stream?

It is owned by the County Highway Agency.