US Bridges

N77 Kent Ave over Stream

Good

Adair County, Iowa · Adair County · Structure no. 000000000056981

Built
2018
7 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
15
2022 count
Owner
County
County Highway Agency

About this bridge

N77 Kent Ave over Stream is a concrete continuous culvert carrying N77 Kent Ave over Stream in Adair 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 15 vehicles a day, projected to reach 15 by 2043. The structure is 22 ft (6.6 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesN77 Kent Ave
CrossesStream
LocationAdair County
RouteCounty Highway 0
CountyAdair County
StateIowa
Coordinates41.36789, -94.50934
Functional classRural Minor Collector

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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.2 US tons
Inventory rating44.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHL 93
Structure length22 ft (6.6 m)
Longest span10 ft (3 m)
Deck width22 ft (6.6 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2022)
Projected traffic15 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N77 Kent Ave over Stream built?

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

What condition is N77 Kent Ave 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 May 2023.

How much traffic does N77 Kent Ave over Stream carry?

About 15 vehicles per day (2022 count).

How long is N77 Kent Ave over Stream?

The structure is 22 ft (6.6 m) long with a longest span of 10 ft (3 m) and a deck 22 ft wide.

Who owns N77 Kent Ave over Stream?

It is owned by the County Highway Agency.