US Bridges

FM over Aldrich Creek

Fair

Ida County, Iowa · 087412804 · Structure no. 000000000186510

Built
1969
56 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
429
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Aldrich Creek is a concrete continuous culvert carrying FM over Aldrich Creek in Ida County, Iowa. It was built in 1969, so it is 56 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 429 vehicles a day, roughly 19% of them trucks, projected to reach 429 by 2043. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFM
CrossesAldrich Creek
Location087412804
RouteCounty Highway 0
StateIowa
Coordinates42.32458, -95.62849
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: 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 rating99.8 US tons
Inventory rating84 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic429 (2022)
Projected traffic429 by 2043
Trucks19%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$17,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Aldrich Creek built?

It was built in 1969, making it 56 years old in 2025.

What condition is FM over Aldrich Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does FM over Aldrich Creek carry?

About 429 vehicles per day (2022 count), of which roughly 19% are trucks.

How long is FM over Aldrich Creek?

The structure is 25 ft (7.6 m) long with a longest span of 13 ft (4 m).

Who owns FM over Aldrich Creek?

It is owned by the County Highway Agency.