180th ST over Stream

Good

Bremer County, Iowa · 092141109 · Structure no. 000000000080011

Built: 2002; 23 years old
Condition: Good; inspected April 2024
Type: Culvert; Concrete Continuous
Length: 26 ft; 2 main spans
Daily traffic: 766; 2022 count
Owner: County; County Highway Agency

About this bridge

180th ST over Stream is a concrete continuous culvert carrying 180th ST over Stream in Bremer 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 766 vehicles a day, roughly 8% of them trucks, projected to reach 766 by 2044. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

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Carries180th ST

CrossesStream

Location092141109

RouteCounty Highway 0

CountyBremer County

StateIowa

Coordinates42.78909, -92.46748

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.

Component	Rating	Meaning
Channel and channel protection	7 Good	Some minor problems.
Culvert	7 Good	Some minor problems.

Last inspectionApril 2024

Inspection intervalevery 48 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 alignment7: Better than present minimum criteria

Operating rating48.6 US tons

Inventory rating36 US tons

Structure

Structure typeCulvert

MaterialConcrete Continuous

DeckNot applicable

Main spans2

Design loadHS 20

Structure length26 ft (7.9 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 traffic766 (2022)

Projected traffic766 by 2044

Trucks8%

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 proposedOther structural work, including hydraulic replacements

Estimated improvement cost—

NavigationNo navigation control on waterway

Frequently asked questions

When was 180th ST over Stream built?

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

What condition is 180th ST 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 April 2024.

How much traffic does 180th ST over Stream carry?

About 766 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is 180th ST over Stream?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m).

Who owns 180th ST over Stream?

It is owned by the County Highway Agency.