US Bridges

FM over Toole Creek

Fair

Lyon County, Iowa · 100461902 · Structure no. 000000000231230

Built
1970
55 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete Continuous
Length
38 ft
3 main spans
Daily traffic
290
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Toole Creek is a concrete continuous culvert carrying FM over Toole Creek in Lyon County, Iowa. It was built in 1970, so it is 55 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 290 vehicles a day, roughly 20% of them trucks, projected to reach 290 by 2043. The structure is 38 ft (11.6 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFM
CrossesToole Creek
Location100461902
RouteCounty Highway 0
CountyLyon County
StateIowa
Coordinates43.47158, -96.32967
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 inspectionJuly 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
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating50.8 US tons
Inventory rating30.4 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 20
Structure length38 ft (11.6 m)
Longest span12 ft (3.7 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic290 (2022)
Projected traffic290 by 2043
Trucks20%
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Toole Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is FM over Toole 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 July 2023.

How much traffic does FM over Toole Creek carry?

About 290 vehicles per day (2022 count), of which roughly 20% are trucks.

How long is FM over Toole Creek?

The structure is 38 ft (11.6 m) long with a longest span of 12 ft (3.7 m) and a deck 34 ft wide.

Who owns FM over Toole Creek?

It is owned by the County Highway Agency.