US Bridges

Ia 25 over Stream

Good

Adair County, Iowa · 6.2 Mi. N of Jct. Ia 92 · Structure no. 000000000012950

Built
1952
73 years old
Condition
Good
inspected December 2022
Type
Culvert
Concrete
Length
40 ft
1 main span
Daily traffic
2,080
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 25 over Stream is a concrete culvert carrying Ia 25 over Stream in Adair County, Iowa. It was built in 1952, so it is 73 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,080 vehicles a day, roughly 21% of them trucks, projected to reach 2,080 by 2042. The structure is 40 ft (12.2 m) long. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesIa 25
CrossesStream
Location6.2 Mi. N of Jct. Ia 92
RouteState Highway 25
CountyAdair County
StateIowa
Coordinates41.39295, -94.45272
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34 US tons
Inventory rating25 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length40 ft (12.2 m)
Longest span40 ft (12.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,080 (2022)
Projected traffic2,080 by 2042
Trucks21%
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 25 over Stream built?

It was built in 1952, making it 73 years old in 2025.

What condition is Ia 25 over Stream in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2022.

How much traffic does Ia 25 over Stream carry?

About 2,080 vehicles per day (2022 count), of which roughly 21% are trucks.

How long is Ia 25 over Stream?

The structure is 40 ft (12.2 m) long with a longest span of 40 ft (12.2 m).

Who owns Ia 25 over Stream?

It is owned by the State Highway Agency.