Ia 22 over Stream

Fair

Muscatine County, Iowa · 0.6 Mi. W of SR Y36 · Structure no. 000000000038141

Built: 1984; 41 years old
Condition: Fair; inspected September 2023
Type: Slab; Concrete Continuous
Length: 120 ft; 3 main spans
Daily traffic: 1,560; 2022 count
Owner: State; State Highway Agency

About this bridge

Ia 22 over Stream is a concrete continuous slab carrying Ia 22 over Stream in Muscatine County, Iowa. It was built in 1984, so it is 41 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 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 1,560 vehicles a day, roughly 18% of them trucks, projected to reach 1,560 by 2043. The structure is 120 ft (36.6 m) long and 43 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

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CarriesIa 22

CrossesStream

Location0.6 Mi. W of SR Y36

RouteState Highway 22

CountyMuscatine County

StateIowa

Coordinates41.45894, -90.79617

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

Last inspectionSeptember 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 geometry7: Better than present minimum criteria

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating74.8 US tons

Inventory rating44.9 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans3

Design loadHS 20

Structure length120 ft (36.6 m)

Longest span47 ft (14.3 m)

Deck width43 ft (13.2 m)

Roadway width40 ft (12.2 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,560 (2022)

Projected traffic1,560 by 2043

Trucks18%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed14.3 mi (23 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 1984, making it 41 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 September 2023.

How much traffic does Ia 22 over Stream carry?

About 1,560 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is Ia 22 over Stream?

The structure is 120 ft (36.6 m) long with a longest span of 47 ft (14.3 m) and a deck 43 ft wide.

Who owns Ia 22 over Stream?

It is owned by the State Highway Agency.