US Bridges

FM over Creek

Poor

Audubon County, Iowa · 078343004 · Structure no. 000000000066560

Built
1920
105 years old, rebuilt 1993
Condition
Poor
inspected March 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
82 ft
4 main spans
Daily traffic
60
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Creek is a wood or timber stringer/multi-beam or girder carrying FM over Creek in Audubon County, Iowa. It was built in 1920 and reconstructed in 1993, so it is 105 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 60 vehicles a day, projected to reach 60 by 2044. The structure is 82 ft (25 m) long and 20 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFM
CrossesCreek
Location078343004
RouteCounty Highway 0
StateIowa
Coordinates41.5302, -94.80124
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44.8 US tons
Inventory rating32.3 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans4
Design loadUnknown
Structure length82 ft (25 m)
Longest span23 ft (7 m)
Deck width20 ft (6.2 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2022)
Projected traffic60 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$675,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Creek built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1993.

What condition is FM over 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 March 2024.

How much traffic does FM over Creek carry?

About 60 vehicles per day (2022 count).

How long is FM over Creek?

The structure is 82 ft (25 m) long with a longest span of 23 ft (7 m) and a deck 20 ft wide.

Who owns FM over Creek?

It is owned by the County Highway Agency.