US Bridges

Armada RD over Stream

Good

Clayton County, Iowa · 1.9 Miles N of HWY 56 · Structure no. 000000000120931

Built
2020
5 years old
Condition
Good
inspected June 2024
Type
Culvert
Steel
Length
24 ft
2 main spans
Daily traffic
21
2022 count
Owner
County
County Highway Agency

About this bridge

Armada RD over Stream is a steel culvert carrying Armada RD over Stream in Clayton County, Iowa. It was built in 2020, so it is 5 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 21 vehicles a day, projected to reach 21 by 2044. The structure is 24 ft (7.3 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesArmada RD
CrossesStream
Location1.9 Miles N of HWY 56
RouteCounty Highway 0
CountyClayton County
StateIowa
Coordinates42.91674, -91.59296
Functional classRural Local

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.
Culvert8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadOther
Structure length24 ft (7.3 m)
Longest span9 ft (2.7 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21 (2022)
Projected traffic21 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Armada RD over Stream built?

It was built in 2020, making it 5 years old in 2025.

What condition is Armada RD 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 June 2024.

How much traffic does Armada RD over Stream carry?

About 21 vehicles per day (2022 count).

How long is Armada RD over Stream?

The structure is 24 ft (7.3 m) long with a longest span of 9 ft (2.7 m) and a deck 30 ft wide.

Who owns Armada RD over Stream?

It is owned by the County Highway Agency.