US Bridges

FM over Middle Nodaway River

Good

Adair County, Iowa · 076320401 · Structure no. 000000000056901

Built
2002
23 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete Continuous
Length
40 ft
3 main spans
Daily traffic
89
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Middle Nodaway River is a concrete continuous culvert carrying FM over Middle Nodaway River in Adair County, Iowa. It was built in 2002, so it is 23 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 89 vehicles a day, projected to reach 89 by 2043. The structure is 40 ft (12.2 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFM
CrossesMiddle Nodaway River
Location076320401
RouteCounty Highway 0
StateIowa
Coordinates41.41729, -94.53504
Functional classRural Major 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 protection8 Very GoodNo problems noted.
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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.2 US tons
Inventory rating37.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length40 ft (12.2 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 traffic89 (2022)
Projected traffic89 by 2043
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Middle Nodaway River built?

It was built in 2002, making it 23 years old in 2025.

What condition is FM over Middle Nodaway 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 May 2023.

How much traffic does FM over Middle Nodaway River carry?

About 89 vehicles per day (2022 count).

How long is FM over Middle Nodaway River?

The structure is 40 ft (12.2 m) long with a longest span of 12 ft (3.7 m).

Who owns FM over Middle Nodaway River?

It is owned by the County Highway Agency.