US Bridges

275th over Willow Creek

Poor

Cerro Gordo County, Iowa · 096210603 · Structure no. 000000000106310

Built
1941
84 years old
Condition
Poor
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
65 ft
3 main spans
Daily traffic
91
2022 count
Owner
County
County Highway Agency

About this bridge

275th over Willow Creek is a steel stringer/multi-beam or girder carrying 275th over Willow Creek in Cerro Gordo County, Iowa. It was built in 1941, so it is 84 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 91 vehicles a day, projected to reach 91 by 2044. The structure is 65 ft (19.8 m) long and 22 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
Carries275th
CrossesWillow Creek
Location096210603
RouteCounty Highway 0
CountyCerro Gordo County
StateIowa
Coordinates43.16272, -93.37406
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.3 US tons
Inventory rating28 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length65 ft (19.8 m)
Longest span21 ft (6.4 m)
Deck width22 ft (6.6 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic91 (2022)
Projected traffic91 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 275th over Willow Creek built?

It was built in 1941, making it 84 years old in 2025.

What condition is 275th over Willow Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2024.

How much traffic does 275th over Willow Creek carry?

About 91 vehicles per day (2022 count).

How long is 275th over Willow Creek?

The structure is 65 ft (19.8 m) long with a longest span of 21 ft (6.4 m) and a deck 22 ft wide.

Who owns 275th over Willow Creek?

It is owned by the County Highway Agency.