US Bridges

185th ST over Creek

Good

Winneshiek County, Iowa · 0.5 MI E of Centennial RD · Structure no. 000000000346661

Built
2021
4 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete Continuous
Length
24 ft
3 main spans
Daily traffic
50
2021 count
Owner
County
County Highway Agency

About this bridge

185th ST over Creek is a concrete continuous culvert carrying 185th ST over Creek in Winneshiek County, Iowa. It was built in 2021, so it is 4 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 50 vehicles a day, projected to reach 50 by 2043. The structure is 24 ft (7.3 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries185th ST
CrossesCreek
Location0.5 MI E of Centennial RD
RouteCounty Highway 0
StateIowa
Coordinates43.20878, -91.70195
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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.3 US tons
Inventory rating38.3 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHL 93
Structure length24 ft (7.3 m)
Longest span8 ft (2.4 m)
Deck width42 ft (12.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2021)
Projected traffic50 by 2043
Trucks0%
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was 185th ST over Creek built?

It was built in 2021, making it 4 years old in 2025.

What condition is 185th ST over Creek 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 2023.

How much traffic does 185th ST over Creek carry?

About 50 vehicles per day (2021 count).

How long is 185th ST over Creek?

The structure is 24 ft (7.3 m) long with a longest span of 8 ft (2.4 m) and a deck 42 ft wide.

Who owns 185th ST over Creek?

It is owned by the County Highway Agency.