FM over Worrell Creek

Fair

Boone County, Iowa · 083251302 · Structure no. 000000000077281

Built: 1985; 40 years old
Condition: Fair; inspected May 2022
Type: Culvert; Concrete Continuous
Length: 25 ft; 2 main spans
Daily traffic: 518; 2022 count
Owner: County; County Highway Agency

About this bridge

FM over Worrell Creek is a concrete continuous culvert carrying FM over Worrell Creek in Boone County, Iowa. It was built in 1985, so it is 40 years old, younger 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 6 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 518 vehicles a day, roughly 5% of them trucks, projected to reach 518 by 2043. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesFM

CrossesWorrell Creek

Location083251302

RouteCounty Highway 0

CountyBoone County

StateIowa

Coordinates42.00293, -93.71805

Functional classRural Minor Collector

Condition and inspection

Fair

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

Component	Rating	Meaning
Channel and channel protection	6 Satisfactory	Structural elements show some minor deterioration.
Culvert	6 Satisfactory	Structural elements show some minor deterioration.

Last inspectionMay 2022

Inspection intervalevery 48 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation6: Equal to present minimum criteria

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating70 US tons

Inventory rating41.9 US tons

Structure

Structure typeCulvert

MaterialConcrete Continuous

DeckNot applicable

Main spans2

Design loadH 20

Structure length25 ft (7.6 m)

Longest span12 ft (3.7 m)

Deck width0 ft (0 m)

Roadway width0 ft (0 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic518 (2022)

Projected traffic518 by 2043

Trucks5%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed3.7 mi (6 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 proposedOther structural work, including hydraulic replacements

Estimated improvement cost—

NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Worrell Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is FM over Worrell 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 May 2022.

How much traffic does FM over Worrell Creek carry?

About 518 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is FM over Worrell Creek?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m).

Who owns FM over Worrell Creek?

It is owned by the County Highway Agency.