US Bridges

FM Easton Trail over Allen Creek

Poor

Harrison County, Iowa · 081433403 · Structure no. 000000000179660

Built
1969
56 years old
Condition
Poor
inspected November 2024
Type
Culvert
Steel
Length
40 ft
2 main spans
Daily traffic
335
2022 count
Owner
County
County Highway Agency

About this bridge

FM Easton Trail over Allen Creek is a steel culvert carrying FM Easton Trail over Allen Creek in Harrison 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 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 335 vehicles a day, roughly 9% of them trucks, projected to reach 335 by 2043. The structure is 40 ft (12.2 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesFM Easton Trail
CrossesAllen Creek
Location081433403
RouteCounty Highway 0
CountyHarrison County
StateIowa
Coordinates41.79059, -95.84255
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionNovember 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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating23 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length40 ft (12.2 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 traffic335 (2022)
Projected traffic335 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM Easton Trail over Allen Creek built?

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

What condition is FM Easton Trail over Allen 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 November 2024.

How much traffic does FM Easton Trail over Allen Creek carry?

About 335 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is FM Easton Trail over Allen Creek?

The structure is 40 ft (12.2 m) long with a longest span of 13 ft (4 m).

Who owns FM Easton Trail over Allen Creek?

It is owned by the County Highway Agency.