US Bridges

Ia 175 over Stream

Fair

Sac County, Iowa · 0.1 Mi. W of Jct. SR M64 · Structure no. 000000000046650

Built
1937
88 years old, rebuilt 1997
Condition
Fair
inspected October 2024
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
1,820
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 175 over Stream is a concrete continuous culvert carrying Ia 175 over Stream in Sac County, Iowa. It was built in 1937 and reconstructed in 1997, so it is 88 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 1,820 vehicles a day, roughly 31% of them trucks, projected to reach 1,820 by 2044. The structure is 22 ft (6.7 m) long.

Location

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CarriesIa 175
CrossesStream
Location0.1 Mi. W of Jct. SR M64
RouteState Highway 175
CountySac County
StateIowa
Coordinates42.3115, -95.09177
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.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating35.6 US tons
Inventory rating13.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 20
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,820 (2022)
Projected traffic1,820 by 2044
Trucks31%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 175 over Stream built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1997.

What condition is Ia 175 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 October 2024.

How much traffic does Ia 175 over Stream carry?

About 1,820 vehicles per day (2022 count), of which roughly 31% are trucks.

How long is Ia 175 over Stream?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns Ia 175 over Stream?

It is owned by the State Highway Agency.