US Bridges

Ia 78 over Honey Creek

Good

Louisa County, Iowa · 1.8 Mi. W of Jct. US 61 · Structure no. 000000000034081

Built
2022
3 years old
Condition
Good
inspected November 2024
Type
Culvert
Concrete Continuous
Length
42 ft
3 main spans
Daily traffic
2,030
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 78 over Honey Creek is a concrete continuous culvert carrying Ia 78 over Honey Creek in Louisa County, Iowa. It was built in 2022, so it is 3 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,030 vehicles a day, roughly 7% of them trucks, projected to reach 2,030 by 2044. The structure is 42 ft (12.9 m) long. If it were closed, the detour would be 16.2 mi (26 km).

CarriesIa 78
CrossesHoney Creek
Location1.8 Mi. W of Jct. US 61
RouteState Highway 78
StateIowa
Coordinates41.08831, -91.21834
Functional classRural Minor Arterial

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 protection9 ExcellentNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.8 US tons
Inventory rating67.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHL 93
Structure length42 ft (12.9 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 traffic2,030 (2022)
Projected traffic2,030 by 2044
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 78 over Honey Creek built?

It was built in 2022, making it 3 years old in 2025.

What condition is Ia 78 over Honey Creek 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 Ia 78 over Honey Creek carry?

About 2,030 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Ia 78 over Honey Creek?

The structure is 42 ft (12.9 m) long with a longest span of 12 ft (3.7 m).

Who owns Ia 78 over Honey Creek?

It is owned by the State Highway Agency.