US Bridges

Ia 21 over Honey Creek

Fair

Iowa County, Iowa · 2.8 Mi. N of N Jct. US 6 · Structure no. 000000000029380

Built
1958
67 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
1,230
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 21 over Honey Creek is a concrete continuous culvert carrying Ia 21 over Honey Creek in Iowa 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 1,230 vehicles a day, roughly 11% of them trucks, projected to reach 1,230 by 2043. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesIa 21
CrossesHoney Creek
Location2.8 Mi. N of N Jct. US 6
RouteState Highway 21
CountyIowa County
StateIowa
Coordinates41.78309, -92.27925
Functional classRural Minor Arterial

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 inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.7 US tons
Inventory rating24.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 20
Structure length29 ft (8.8 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,230 (2022)
Projected traffic1,230 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Ia 21 over Honey Creek built?

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

What condition is Ia 21 over Honey 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 December 2023.

How much traffic does Ia 21 over Honey Creek carry?

About 1,230 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Ia 21 over Honey Creek?

The structure is 29 ft (8.8 m) long with a longest span of 12 ft (3.7 m).

Who owns Ia 21 over Honey Creek?

It is owned by the State Highway Agency.