US Bridges

Local over Ioway Creek

PoorPosted for load

Hamilton County, Iowa · 086253201 · Structure no. 000000000171030

Built
1917
108 years old
Condition
Poor
inspected September 2023
Type
Tee Beam
Concrete
Length
65 ft
2 main spans
Daily traffic
45
2022 count
Owner
County
County Highway Agency

About this bridge

Local over Ioway Creek is a concrete tee beam carrying Local over Ioway Creek in Hamilton County, Iowa. It was built in 1917, so it is 108 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 3 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 45 vehicles a day, roughly 11% of them trucks, projected to reach 45 by 2043. The structure is 65 ft (19.8 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLocal
CrossesIoway Creek
Location086253201
RouteCounty Highway 0
StateIowa
Coordinates42.22401, -93.7948
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
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating19.4 US tons
Inventory rating11.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length65 ft (19.8 m)
Longest span30 ft (9.1 m)
Deck width20 ft (6.2 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2022)
Projected traffic45 by 2043
Trucks11%
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$809,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Local over Ioway Creek built?

It was built in 1917, making it 108 years old in 2025.

What condition is Local over Ioway 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 September 2023.

How much traffic does Local over Ioway Creek carry?

About 45 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Local over Ioway Creek?

The structure is 65 ft (19.8 m) long with a longest span of 30 ft (9.1 m) and a deck 20 ft wide.

Who owns Local over Ioway Creek?

It is owned by the County Highway Agency.