US Bridges

Local over Bonnell Creek

Fair

Lee County, Iowa · 068061406 · Structure no. 000000000219001

Built
1978
47 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
34
2022 count
Owner
County
County Highway Agency

About this bridge

Local over Bonnell Creek is a concrete continuous culvert carrying Local over Bonnell Creek in Lee County, Iowa. It was built in 1978, so it is 47 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 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 34 vehicles a day, projected to reach 34 by 2043. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 6.2 mi (10 km).

CarriesLocal
CrossesBonnell Creek
Location068061406
RouteCounty Highway 0
StateIowa
Coordinates40.68571, -91.5261
Functional classRural Local

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
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 rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34 (2022)
Projected traffic34 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Local over Bonnell Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is Local over Bonnell 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 Local over Bonnell Creek carry?

About 34 vehicles per day (2022 count).

How long is Local over Bonnell Creek?

The structure is 29 ft (8.8 m) long with a longest span of 10 ft (3 m).

Who owns Local over Bonnell Creek?

It is owned by the County Highway Agency.