US Bridges

Kingbird Ave over Br Nishnabotna River

Good

Audubon County, Iowa · 1.5 Mile N. of CO HWY F32 · Structure no. 000000000068381

Built
2016
9 years old
Condition
Good
inspected July 2024
Type
Slab
Concrete Continuous
Length
83 ft
3 main spans
Daily traffic
34
2022 count
Owner
County
County Highway Agency

About this bridge

Kingbird Ave over Br Nishnabotna River is a concrete continuous slab carrying Kingbird Ave over Br Nishnabotna River in Audubon County, Iowa. It was built in 2016, so it is 9 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 34 vehicles a day, projected to reach 34 by 2044. The structure is 83 ft (25.3 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesKingbird Ave
CrossesBr Nishnabotna River
Location1.5 Mile N. of CO HWY F32
RouteCounty Highway 0
StateIowa
Coordinates41.7533, -94.89896
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.6 US tons
Inventory rating41.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length83 ft (25.3 m)
Longest span31 ft (9.4 m)
Deck width28 ft (8.4 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34 (2022)
Projected traffic34 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Kingbird Ave over Br Nishnabotna River built?

It was built in 2016, making it 9 years old in 2025.

What condition is Kingbird Ave over Br Nishnabotna River 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 July 2024.

How much traffic does Kingbird Ave over Br Nishnabotna River carry?

About 34 vehicles per day (2022 count).

How long is Kingbird Ave over Br Nishnabotna River?

The structure is 83 ft (25.3 m) long with a longest span of 31 ft (9.4 m) and a deck 28 ft wide.

Who owns Kingbird Ave over Br Nishnabotna River?

It is owned by the County Highway Agency.