US Bridges

FM over Unnamed Creek

Poor

Ida County, Iowa · 088391302 · Structure no. 000000000186600

Built
1900
125 years old, rebuilt 1959
Condition
Poor
inspected January 2024
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
369
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Unnamed Creek is a concrete continuous culvert carrying FM over Unnamed Creek in Ida County, Iowa. It was built in 1900 and reconstructed in 1959, 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.

It carries about 369 vehicles a day, projected to reach 369 by 2044. The structure is 23 ft (7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFM
CrossesUnnamed Creek
Location088391302
RouteCounty Highway 0
CountyIda County
StateIowa
Coordinates42.44129, -95.34215
Functional classRural Major Collector

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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJanuary 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
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 20
Structure length23 ft (7 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic369 (2022)
Projected traffic369 by 2044
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$396,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Unnamed Creek built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1959.

What condition is FM over Unnamed 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 January 2024.

How much traffic does FM over Unnamed Creek carry?

About 369 vehicles per day (2022 count).

How long is FM over Unnamed Creek?

The structure is 23 ft (7 m) long with a longest span of 11 ft (3.4 m).

Who owns FM over Unnamed Creek?

It is owned by the County Highway Agency.