112th ST over Creek

Fair

Scott County, Iowa · 077E21703 · Structure no. 000000000302140

Built: 1964; 61 years old, rebuilt 1989
Condition: Fair; inspected May 2023
Type: Culvert; Concrete Continuous
Length: 24 ft; 2 main spans
Daily traffic: 1,070; 2022 count
Owner: County; County Highway Agency

About this bridge

112th ST over Creek is a concrete continuous culvert carrying 112th ST over Creek in Scott County, Iowa. It was built in 1964 and reconstructed in 1989, so it is 61 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 1,070 vehicles a day, roughly 10% of them trucks, projected to reach 1,070 by 2043. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

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Carries112th ST

CrossesCreek

Location077E21703

RouteCounty Highway 0

CountyScott County

StateIowa

Coordinates41.46889, -90.75846

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.

Component	Rating	Meaning
Channel and channel protection	7 Good	Some minor problems.
Culvert	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.

Last inspectionMay 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

Waterway adequacy7: Better than present minimum criteria

Approach roadway alignment6: Equal to present minimum criteria

Operating rating48.6 US tons

Inventory rating36 US tons

Structure

Structure typeCulvert

MaterialConcrete Continuous

DeckNot applicable

Main spans2

Design loadHS 20

Structure length24 ft (7.3 m)

Longest span11 ft (3.4 m)

Deck width0 ft (0 m)

Roadway width0 ft (0 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,070 (2022)

Projected traffic1,070 by 2043

Trucks10%

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 112th ST over Creek built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1989.

What condition is 112th ST over 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 2023.

How much traffic does 112th ST over Creek carry?

About 1,070 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is 112th ST over Creek?

The structure is 24 ft (7.3 m) long with a longest span of 11 ft (3.4 m).

Who owns 112th ST over Creek?

It is owned by the County Highway Agency.