US Bridges

N54 Delta Ave over Branch of Nodaway Rvr

Good

Adair County, Iowa · 2.5 MI N of G27 on N54 · Structure no. 000000000366100

Built
2013
12 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
349
2022 count
Owner
County
County Highway Agency

About this bridge

N54 Delta Ave over Branch of Nodaway Rvr is a concrete continuous culvert carrying N54 Delta Ave over Branch of Nodaway Rvr in Adair County, Iowa. It was built in 2013, so it is 12 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 349 vehicles a day, roughly 24% of them trucks, projected to reach 349 by 2043. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesN54 Delta Ave
CrossesBranch of Nodaway Rvr
Location2.5 MI N of G27 on N54
RouteCounty Highway 0
CountyAdair County
StateIowa
Coordinates41.45367, -94.64335
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 rating66.1 US tons
Inventory rating39.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic349 (2022)
Projected traffic349 by 2043
Trucks24%
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 N54 Delta Ave over Branch of Nodaway Rvr built?

It was built in 2013, making it 12 years old in 2025.

What condition is N54 Delta Ave over Branch of Nodaway Rvr 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 N54 Delta Ave over Branch of Nodaway Rvr carry?

About 349 vehicles per day (2022 count), of which roughly 24% are trucks.

How long is N54 Delta Ave over Branch of Nodaway Rvr?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m).

Who owns N54 Delta Ave over Branch of Nodaway Rvr?

It is owned by the County Highway Agency.