Ia 22 over Stream

Fair

Muscatine County, Iowa · 2.9 Mi. E of Jct. Ia #38 · Structure no. 000000000038030

Built: 1967; 58 years old
Condition: Fair; inspected March 2023
Type: Slab; Concrete
Length: 28 ft; 1 main span
Daily traffic: 1,730; 2022 count
Owner: State; State Highway Agency

About this bridge

Ia 22 over Stream is a concrete slab carrying Ia 22 over Stream in Muscatine County, Iowa. It was built in 1967, so it is 58 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 1,730 vehicles a day, roughly 16% of them trucks, projected to reach 1,730 by 2042. The structure is 28 ft (8.5 m) long and 46 ft wide. If it were closed, the detour would be 36 mi (58 km).

Location

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CarriesIa 22

CrossesStream

Location2.9 Mi. E of Jct. Ia #38

RouteState Highway 22

CountyMuscatine County

StateIowa

Coordinates41.44481, -90.9782

Functional classRural Minor Arterial

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

Last inspectionMarch 2023

Inspection intervalevery 24 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 adequacy6: Equal to present minimum criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating71.5 US tons

Inventory rating43 US tons

Structure

Structure typeSlab

MaterialConcrete

DeckConcrete, cast-in-place

Main spans1

Design loadHS 20

Structure length28 ft (8.5 m)

Longest span28 ft (8.5 m)

Deck width46 ft (14 m)

Roadway width43 ft (13.2 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,730 (2022)

Projected traffic1,730 by 2042

Trucks16%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed36 mi (58 km)

TollOn a free road

National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency

Maintained byState 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 Ia 22 over Stream built?

It was built in 1967, making it 58 years old in 2025.

What condition is Ia 22 over Stream 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 Ia 22 over Stream carry?

About 1,730 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is Ia 22 over Stream?

The structure is 28 ft (8.5 m) long with a longest span of 28 ft (8.5 m) and a deck 46 ft wide.

Who owns Ia 22 over Stream?

It is owned by the State Highway Agency.