US Bridges

Ia 78 over Stream

Good

Henry County, Iowa · 0.8 Mi. E of Sec. Rd. W66 · Structure no. 000000000028601

Built
2018
7 years old
Condition
Good
inspected November 2024
Type
Culvert
Concrete
Length
27 ft
2 main spans
Daily traffic
900
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 78 over Stream is a concrete culvert carrying Ia 78 over Stream in Henry County, Iowa. It was built in 2018, so it is 7 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 900 vehicles a day, roughly 16% of them trucks, projected to reach 900 by 2042. The structure is 27 ft (8.1 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesIa 78
CrossesStream
Location0.8 Mi. E of Sec. Rd. W66
RouteState Highway 78
CountyHenry County
StateIowa
Coordinates41.08936, -91.42342
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating44.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length27 ft (8.1 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 traffic900 (2022)
Projected traffic900 by 2042
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Stream built?

It was built in 2018, making it 7 years old in 2025.

What condition is Ia 78 over Stream 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 Stream carry?

About 900 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is Ia 78 over Stream?

The structure is 27 ft (8.1 m) long with a longest span of 12 ft (3.7 m).

Who owns Ia 78 over Stream?

It is owned by the State Highway Agency.