Local over Cylinder Creek

Fair

Palo Alto County, Iowa · 096313101 · Structure no. 000000000269661

Built: 1991; 34 years old
Condition: Fair; inspected April 2023
Type: Slab; Concrete Continuous
Length: 80 ft; 3 main spans
Daily traffic: 81; 2021 count
Owner: County; County Highway Agency

About this bridge

Local over Cylinder Creek is a concrete continuous slab carrying Local over Cylinder Creek in Palo Alto County, Iowa. It was built in 1991, so it is 34 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 81 vehicles a day, roughly 26% of them trucks, projected to reach 81 by 2043. The structure is 80 ft (24.4 m) long and 30 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesLocal

CrossesCylinder Creek

Location096313101

RouteCounty Highway 0

CountyPalo Alto County

StateIowa

Coordinates43.09758, -94.5582

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.

Component	Rating	Meaning
Deck	7 Good	Some minor problems.
Superstructure	7 Good	Some minor problems.
Substructure	6 Satisfactory	Structural elements show some minor deterioration.
Channel and channel protection	6 Satisfactory	Structural elements show some minor deterioration.

Last inspectionApril 2023

Inspection intervalevery 48 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation6: Equal to present minimum criteria

Deck geometry7: Better than present minimum criteria

Waterway adequacy9: Superior to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating68.5 US tons

Inventory rating40.9 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans3

Design loadHS 20

Structure length80 ft (24.4 m)

Longest span29 ft (8.8 m)

Deck width30 ft (9.1 m)

Roadway width28 ft (8.5 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic81 (2021)

Projected traffic81 by 2043

Trucks26%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed8.1 mi (13 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 Local over Cylinder Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is Local over Cylinder 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 April 2023.

How much traffic does Local over Cylinder Creek carry?

About 81 vehicles per day (2021 count), of which roughly 26% are trucks.

How long is Local over Cylinder Creek?

The structure is 80 ft (24.4 m) long with a longest span of 29 ft (8.8 m) and a deck 30 ft wide.

Who owns Local over Cylinder Creek?

It is owned by the County Highway Agency.