US Bridges

Local over Winnebago River

PoorPosted for load

Floyd County, Iowa · 095180801 · Structure no. 000000000154810

Built
1900
125 years old, rebuilt 1957
Condition
Poor
inspected March 2024
Type
Truss - Thru
Steel
Length
152 ft
1 main span
Daily traffic
59
2022 count
Owner
County
County Highway Agency

About this bridge

Local over Winnebago River is a steel truss - thru carrying Local over Winnebago River in Floyd County, Iowa. It was built in 1900 and reconstructed in 1957, so it is 125 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. Its operating status is: posted for load restriction.

It carries about 59 vehicles a day, projected to reach 59 by 2044. The structure is 152 ft (46.3 m) long and 21 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesLocal
CrossesWinnebago River
Location095180801
RouteCounty Highway 0
CountyFloyd County
StateIowa
Coordinates43.06703, -92.99818
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.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating29 US tons
Inventory rating19 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+1 approach)
Design loadUnknown
Structure length152 ft (46.3 m)
Longest span120 ft (36.6 m)
Deck width21 ft (6.5 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deck14 ft (4.3 m)

Traffic and service

Average daily traffic59 (2022)
Projected traffic59 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.5 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Local over Winnebago River built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1957.

What condition is Local over Winnebago River 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 March 2024.

How much traffic does Local over Winnebago River carry?

About 59 vehicles per day (2022 count).

How long is Local over Winnebago River?

The structure is 152 ft (46.3 m) long with a longest span of 120 ft (36.6 m) and a deck 21 ft wide.

Who owns Local over Winnebago River?

It is owned by the County Highway Agency.