220th Ave over Creek

Fair

Scott County, Iowa · 079E42901 · Structure no. 000000000302810

Built: 1921; 104 years old, rebuilt 1994
Condition: Fair; inspected April 2023
Type: Tee Beam; Prestressed Concrete
Length: 27 ft; 1 main span
Daily traffic: 150; 2022 count
Owner: County; County Highway Agency

About this bridge

220th Ave over Creek is a prestressed concrete tee beam carrying 220th Ave over Creek in Scott County, Iowa. It was built in 1921 and reconstructed in 1994, so it is 104 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 150 vehicles a day, projected to reach 150 by 2043. The structure is 27 ft (8.2 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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Carries220th Ave

CrossesCreek

Location079E42901

RouteCounty Highway 0

CountyScott County

StateIowa

Coordinates41.62592, -90.52013

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
Deck	7 Good	Some minor problems.
Superstructure	7 Good	Some minor problems.
Substructure	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection	6 Satisfactory	Structural elements show some minor deterioration.

Last inspectionApril 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 geometry6: Equal to present minimum criteria

Waterway adequacy6: Equal to present minimum criteria

Approach roadway alignment7: Better than present minimum criteria

Operating rating68.5 US tons

Inventory rating41.1 US tons

Structure

Structure typeTee Beam

MaterialPrestressed Concrete

DeckConcrete, precast panels

Main spans1

Design loadHS 20

Structure length27 ft (8.2 m)

Longest span26 ft (7.9 m)

Deck width28 ft (8.5 m)

Roadway width28 ft (8.5 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2022)

Projected traffic150 by 2043

Trucks0%

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 220th Ave over Creek built?

It was built in 1921, making it 104 years old in 2025. It was reconstructed in 1994.

What condition is 220th Ave 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 April 2023.

How much traffic does 220th Ave over Creek carry?

About 150 vehicles per day (2022 count).

How long is 220th Ave over Creek?

The structure is 27 ft (8.2 m) long with a longest span of 26 ft (7.9 m) and a deck 28 ft wide.

Who owns 220th Ave over Creek?

It is owned by the County Highway Agency.